Precision, Low Noise FGA™ Voltage References with Disable ISL21060 Features The ISL21060 FGA™ voltage references are low power, high • Reference output voltage . . . . . . . . . . . . . . . .2.048V, 2.500V, precision voltage references fabricated on Intersil’s proprietary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.000V, 3.300V, 4.096V Floating Gate Analog technology. A new disable feature allows • Initial accuracy. . . . . . . . . . . . . . . . . . . . . . . .±1.0mV, ±2.5mV the device to shut down the output and reduce supply current drain from 15µA operating to <500nA. • Input voltage range - ISL21060-20 . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5V to 5.5V The ISL21060 family features guaranteed initial accuracy as - ISL21060-25 . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.7V to 5.5V low as ±1.0mV with drift down to 10ppm/°C. Noise is typically 10µV (10Hz BW). This combination of high initial accuracy, - ISL21060-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.2V to 5.5V P-P low power and low output noise performance of the ISL21060 - ISL21060-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5V to 5.5V enables versatile high performance control and data acquisition - ISL21060-41. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.3V to 5.5V applications with low power consumption. • Output voltage noise . . . . . . . . . . . . .10µVP-P (0.1Hz to 10Hz) Pin Configuration • Supply current . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40µA (max) ISL21060 •Tempco . . . . . . . . . . . . . . . . . . . . . . . . 10ppm/°C, 25ppm/°C (6 LD SOT-23) • Output current capability . . . . . . . . . . . . . . . .+10.0mA/-5mA TOP VIEW • Operating temperature range. . . . . . . . . . . .-40°C to +125°C NC 1 6 VOUTF • Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Ld SOT-23 GND 2 5 VOUTS • Pb-Free (RoHS compliant) Applications EN 3 4 VIN • High resolution A/Ds and D/As Pin Descriptions • Digital meters • Bar code scanners PIN # PIN NAME DESCRIPTION • Basestations 1 NC No Connect; Do Not Connect or Connect to Ground • Battery management/monitoring 2 GND Ground Connection • Industrial/instrumentation equipment 3 EN Enable Input. Active High. Do not Float. Related Literature 4 VIN Input Voltage Connection •AN1835 “ISL21060EVAL1Z User’s Guide” 5 VOUTS Voltage Reference Output Connection (Sense) 6 VOUTF Voltage Reference Output Connection (Force) December 19, 2013 1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. FN6706.6 1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2008, 2009, 2013. All Rights Reserved Intersil (and design) and FGA are trademarks owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners.

ISL21060 Ordering Information PART NUMBER PART V OPTION GRADE TEMP. RANGE PACKAGE OUT (Notes 1, 2, 3) MARKING (V) (mV) (ppm/°C) (Pb-Free) PKG. DWG.# ISL21060BFH620Z-TK GACB (Note 4) 2.048 1.0 10 6 Ld SOT-23 P6.064A ISL21060CFH620Z-TK GACD (Note 4) 2.048 2.5 25 6 Ld SOT-23 P6.064A ISL21060BFH625Z-TK GAEA (Note 4) 2.500 1.0 10 6 Ld SOT-23 P6.064A ISL21060CFH625Z-TK GAGA (Note 4) 2.500 2.5 25 6 Ld SOT-23 P6.064A ISL21060BFH630Z-TK GAHA (Note 4) 3.000 1.0 10 6 Ld SOT-23 P6.064A ISL21060CFH630Z-TK GAJA (Note 4) 3.000 2.5 25 6 Ld SOT-23 P6.064A ISL21060CFH633Z-TK GAPA (Note 4) 3.300 2.5 25 6 Ld SOT-23 P6.064A ISL21060BFH641Z-TK GACC (Note 4) 4.096 1.0 10 6 Ld SOT-23 P6.064A ISL21060CFH641Z-TK GACE (Note 4) 4.096 2.5 25 6 Ld SOT-23 P6.064A NOTES: 1. Please refer to TB347 for details on reel specifications. 2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 3. For Moisture Sensitivity Level (MSL), please see device information page for ISL21060BFH620, ISL21060BFH625, ISL21060BFH630, ISL21060BFH641, ISL21060CFH620, ISL21060CFH625, ISL21060CFH630, ISL21060CFH633, ISL21060CFH641. For more information on MSL, please see tech brief TB363. 4. The part marking is located on the bottom of the part. 2 FN6706.6 December 19, 2013

ISL21060 Absolute Voltage Ratings Thermal Information Max Voltage Thermal Resistance (Typical) θ (°C/W) JA VIN to GND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to +6.5V 6 Ld SOT-23 (Note 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230 VOUT to GND (10s). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to VOUT + 1V Continuous Power Dissipation (TA = +70°C, Note 7) Voltage on “DNC” pins . . . . . . . . . .No connections permitted to these pins Storage Temperature Range. . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C ESD Rating 6 Ld SOT-23, derate 5.88mW/°C above +70°C . . . . . . . . . . . . . . .471mW Human Body Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5500V Pb-free Reflow Profile (Note 6). . . . . . . . . . . . . . . . . . . . . . . . see link below Machine Model. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .550V http://www.intersil.com/pbfree/Pb-FreeReflow.asp Charged Device Model. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2kV Recommended Operating Conditions Temperature Range (Industrial) . . . . . . . . . . . . . . . . . . . . .-40°C to +125°C CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and result in failures not covered by warranty. IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typ values are for information purposes only. Unless otherwise noted, all tests are at the specified temperature and are pulsed tests, therefore: T = T = T J C A NOTE: 5. θ is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details. JA 6. Post-reflow drift for the ISL21060 devices will range from 100∝V to 1.0mV based on experimental results with devices tested in sockets and also on FR4 multi-layer PC boards. The design engineer must take this into account when considering the reference voltage after assembly. Electrical Specifications (ISL21060-20, V = 2.048V) V = 3.0V, T = -40°C to +125°C, I = 0, unless otherwise specified. OUT IN A OUT Boldface limits apply across the operating temperature range, -40°C to +125°C. MIN MAX PARAMETER DESCRIPTION CONDITIONS (Note 10) TYP (Note 10) UNIT V Output Voltage 2.048 V OUT V V Accuracy @ T = +25°C ISL21060B20 -1.0 +1.0 mV OA OUT A ISL21060C20 -2.5 +2.5 mV TC V Output Voltage Temperature Coefficient ISL21060B 10 ppm/°C OUT (Note 7) ISL21060C 25 ppm/°C V Input Voltage Range 2.5 5.5 V IN I Supply Current V = V 16 40 µA IN EN IN ΔV /ΔV Line Regulation 2.5V < V < 5.5V 50 150 µV/V OUT IN IN ΔV /ΔI Load Regulation Sourcing: 0mA ≤ I ≤ 10mA 3 50 µV/mA OUT OUT OUT Sinking: -5mA ≤ I ≤ 0mA 150 400 µV/mA OUT I Short Circuit Current T = +25°C, V tied to GND 50 mA SC A OUT t Turn-on Settling Time V = ±0.1% 300 µs R OUT Ripple Rejection f = 10kHz 75 dB e Output Voltage Noise 0.1Hz ≤ f ≤ 10Hz 10 µV N P-P V Broadband Voltage Noise 10Hz ≤ f ≤ 1kHz 2.5 µV N RMS Noise Density f = 1kHz 60 nV/√Hz ΔV /ΔT Thermal Hysteresis (Note 8) ΔT = +165°C 100 ppm OUT A A ΔV /Δt Long Term Stability (Note 9) T = +25°C 100 ppm OUT A OUTPUT DISABLE V Enable Logic High (ON) 1.6 V ENH V Enable Logic Low (OFF) 0.8 V ENL I Shutdown Supply Current V ≤ 0.35V 0.4 1.5 µA INSD EN 3 FN6706.6 December 19, 2013

ISL21060 Electrical Specifications (ISL21060-25, V = 2.500V) V = 3.0V, T = -40°C to +125°C, I = 0, unless otherwise specified. OUT IN A OUT Boldface limits apply across the operating temperature range, -40°C to +125°C. MIN MAX PARAMETER DESCRIPTION CONDITIONS (Note 10) TYP (Note 10) UNIT V Output Voltage 2.500 V OUT V V Accuracy @ T = +25°C ISL21060B25 -1.0 +1.0 mV OA OUT A ISL21060C25 -2.5 +2.5 mV TC V Output Voltage Temperature Coefficient ISL21060B 10 ppm/°C OUT (Note 7) ISL21060C 25 ppm/°C V Input Voltage Range 2.7 5.5 V IN I Supply Current V = V 16 40 µA IN EN IN ΔV /ΔV Line Regulation 2.7V < V < 5.5V 50 150 µV/V OUT IN IN ΔV /ΔI Load Regulation Sourcing: 0mA ≤ I ≤ 10mA 3 150 µV/mA OUT OUT OUT Sinking: -5mA ≤ I ≤ 0mA 130 400 µV/mA OUT I Short Circuit Current T = +25°C, V tied to GND 50 mA SC A OUT t Turn-on Settling Time V = ±0.1% 300 µs R OUT Ripple Rejection f = 10kHz 75 dB e Output Voltage Noise 0.1Hz ≤ f ≤ 10Hz 10 µV N P-P V Broadband Voltage Noise 10Hz ≤ f ≤ 1kHz 2.5 µV N RMS Noise Density f = 1kHz 60 nV/√Hz ΔV /ΔT Thermal Hysteresis (Note 8) ΔT = +165°C 100 ppm OUT A A ΔV /Δt Long Term Stability (Note 9) T = +25°C 100 ppm OUT A OUTPUT DISABLE V Enable Logic High (ON) 1.6 V ENH V Enable Logic Low (OFF) 0.8 V ENL I Shutdown Supply Current V ≤ 0.35V 0.4 1.5 µA INSD EN Electrical Specifications (ISL21060-30, V = 3.000V) V = 3.5V, T = -40°C to +125°C, I = 0, unless otherwise specified. OUT IN A OUT Boldfacelimits apply across the operating temperature range, -40°C to +125°C. MIN MAX PARAMETER DESCRIPTION CONDITIONS (Note 10) TYP (Note 10) UNIT V Output Voltage 3.000 V OUT V V Accuracy @ T = +25°C ISL21060B30 -1.0 +1.0 mV OA OUT A ISL21060C30 -2.5 +2.5 mV TC V Output Voltage Temperature Coefficient ISL21060B 10 ppm/°C OUT (Note 7) ISL21060C 25 ppm/°C V Input Voltage Range 3.2 5.5 V IN I Supply Current V = V 16 40 µA IN EN IN ΔV /ΔV Line Regulation 3.2V < V < 5.5V 50 150 µV/V OUT IN IN ΔV /ΔI Load Regulation Sourcing: 0mA ≤ I ≤ 10mA 3 50 µV/mA OUT OUT OUT Sinking: -5mA ≤ I ≤ 0mA 130 400 µV/mA OUT I Short Circuit Current T = +25°C, V tied to GND 50 mA SC A OUT t Turn-on Settling Time V = ±0.1% 300 µs R OUT 4 FN6706.6 December 19, 2013

ISL21060 Electrical Specifications (ISL21060-30, V = 3.000V) V = 3.5V, T = -40°C to +125°C, I = 0, unless otherwise specified. OUT IN A OUT Boldfacelimits apply across the operating temperature range, -40°C to +125°C. (Continued) MIN MAX PARAMETER DESCRIPTION CONDITIONS (Note 10) TYP (Note 10) UNIT Ripple Rejection f = 10kHz 75 dB e Output Voltage Noise 0.1Hz ≤ f ≤ 10Hz 10 µV N P-P V Broadband Voltage Noise 10Hz ≤ f ≤ 1kHz 2.5 µV N RMS Noise Density f = 1kHz 60 nV/√Hz ΔV /ΔT Thermal Hysteresis (Note 8) ΔT = +165°C 100 ppm OUT A A ΔV /Δt Long Term Stability (Note 9) T = +25°C 100 ppm OUT A OUTPUT DISABLE V Enable Logic High (ON) 1.6 V ENH V Enable Logic Low (OFF) 0.8 V ENL I Shutdown Supply Current V ≤ 0.35V 0.4 1.5 µA INSD EN Electrical Specifications (ISL21060-33, V = 3.300V) V = 5.0V, T = -40°C to +125°C, I = 0, unless otherwise specified. OUT IN A OUT Boldfacelimits apply across the operating temperature range, -40°C to +125°C. MIN MAX PARAMETER DESCRIPTION CONDITIONS (Note 10) TYP (Note 10) UNIT V Output Voltage 3.300 V OUT V V Accuracy @ T = +25°C ISL21060C33 -2.5 +2.5 mV OA OUT A TC V Output Voltage Temperature Coefficient ISL21060C 25 ppm/°C OUT (Note 7) V Input Voltage Range 3.5 5.5 V IN I Supply Current EN = V 18 40 µA IN IN ΔV /ΔV Line Regulation 3.5V < V < 5.5V 20 150 µV/V OUT IN IN ΔV /ΔI Load Regulation Sourcing: 0mA ≤ I ≤ 10mA 10 50 µV/mA OUT OUT OUT Sinking: -5mA ≤ I ≤ 0mA 120 400 µV/mA OUT I Short Circuit Current T = +25°C, V tied to GND 50 mA SC A OUT t Turn-on Settling Time V = ±0.1% 300 µs R OUT Ripple Rejection f = 10kHz 75 dB e Output Voltage Noise 0.1Hz ≤ f ≤ 10Hz 10 µV N P-P V Broadband Voltage Noise 10Hz ≤ f ≤ 1kHz 2.5 µV N RMS Noise Density f = 1kHz 60 nV/√Hz ΔV /ΔT Thermal Hysteresis (Note 8) ΔT = +165°C 100 ppm OUT A A ΔV /Δt Long Term Stability (Note 9) T = +25°C 100 ppm OUT A OUTPUT DISABLE V Enable Logic High (ON) 1.6 V ENH V Enable Logic Low (OFF) 0.8 V ENL I Shutdown Supply Current V ≤ 0.35V 0.4 1.5 µA INSD EN 5 FN6706.6 December 19, 2013

ISL21060 Electrical Specifications (ISL21060-41, V = 4.096V) V = 5.0V, T = -40°C to +125°C, I = 0, unless otherwise specified. OUT IN A OUT Boldfacelimits apply across the operating temperature range, -40°C to +125°C. MIN MAX PARAMETER DESCRIPTION CONDITIONS (Note 10) TYP (Note 10) UNIT V Output Voltage 4.096 V OUT V V Accuracy @ T = +25°C ISL21060B41 -1.0 +1.0 mV OA OUT A ISL21060C41 -2.5 +2.5 mV TC V Output Voltage Temperature Coefficient ISL21060B 10 ppm/°C OUT (Note 7) ISL21060C 25 ppm/°C V Input Voltage Range 4.3 5.5 V IN I Supply Current EN = V 20 40 µA IN IN ΔV /ΔV Line Regulation 4.3V < V < 5.5V 50 150 µV/V OUT IN IN ΔV /ΔI Load Regulation Sourcing: 0mA ≤ I ≤ 10mA 10 50 µV/mA OUT OUT OUT Sinking: -5mA ≤ I ≤ 0mA 130 400 µV/mA OUT I Short Circuit Current T = +25°C, V tied to GND 50 mA SC A OUT t Turn-on Settling Time V = ±0.1% 300 µs R OUT Ripple Rejection f = 10kHz 75 dB e Output Voltage Noise 0.1Hz ≤ f ≤ 10Hz 10 µV N P-P V Broadband Voltage Noise 10Hz ≤ f ≤ 1kHz 2.5 µV N RMS Noise Density f = 1kHz 60 nV/√Hz ΔV /ΔT Thermal Hysteresis (Note 8) ΔT = +165°C 100 ppm OUT A A ΔV /Δt Long Term Stability (Note 9) T = +25°C 100 ppm OUT A OUTPUT DISABLE V Enable Logic High (ON) 1.6 V ENH V Enable Logic Low (OFF) 0.8 V ENL I Shutdown Supply Current V ≤ 0.35V 0.4 1.5 µA INSD EN NOTES: 7. Over the specified temperature range. Temperature coefficient is measured by the box method whereby the change in V is divided by the OUT temperature range; in this case, -40°C to +125°C = +165°C. 8. Thermal Hysteresis is the change of V measured @ T = +25°C after temperature cycling over a specified range, ΔT . V is read initially at T =+25°C OUT A A OUT A for the device under test. The device is temperature cycled and a second V measurement is taken at +25°C. The difference between the initial OUT V reading and the second V reading is then expressed in ppm. For Δ T = +165°C, the device under test is cycled from +25°C to +125°C to OUT OUT A -40°C to +25°C. 9. Long term drift is logarithmic in nature and diminishes over time. Drift after the first 1000 hours will be approximately 10ppm/√1khrs. 10. Compliance to datasheet limits is assured by one or more methods: production test, characterization and/or design. 6 FN6706.6 December 19, 2013

ISL21060 Typical Performance Curves (ISL21060-30) (R = 100kΩ) EXT 3.0020 17 3.0015 16 +125°C 3.0010 UNIT 3 15 3.0005 UNIT 2 V) A) 14 V (OUT 23..90909050 UNIT 1 I (µIN 13 +25°C 2.9990 12 -40°C 2.9985 11 2.9980 -40 -20 0 20 40 60 80 100 120 103.0 3.5 4.0 4.5 5.0 5.5 TEMPERATURE (°C) VIN (V) FIGURE 1. V vs TEMPERATURE, 3 UNITS FIGURE 2. I vs V , 3 TEMPERATURES OUT IN IN 2.0 100 1.8 90 1.6 80 -40°C +25°C +125°C 1.4 70 1.2 60 µA) 1.0 µA) 50 I (IN 0.8 I (IN 40 +125°C 0.6 30 +25°C 0.4 20 0.2 10 -40°C 0.0 0 0 1 2 3 4 5 0 1 2 3 4 5 6 VIN (V) VENABLE (V) FIGURE 3. I vs V [SLEEP MODE], 3 TEMPERATURES FIGURE 4. I vs V , 3 TEMPERATURES IN IN IN ENABLE 1.2 20 1.0 +125°C -10 0.8 V) 5 +25°C V (mV)OUT 00..46 +25°C (µV)OUTD TO V = IN --7400 +125°C Δ VE 0.2 ΔLIZ-100 -40°C A M 0.0 -40°C OR-130 N ( -0.2 -160 -10 -5 0 5 3.0 3.5 4.0 4.5 5.0 5.5 OUTPUT CURRENT (mA) VIN (V) FIGURE 5. LOAD REGULATION FIGURE 6. LINE REGULATION OVER-TEMPERATURE 7 FN6706.6 December 19, 2013

ISL21060 Typical Performance Curves (ISL21060-30) (R = 100kΩ) (Continued) EXT 3.30 0 +125°C -10 3.25 -20 V) 3.20 E ( +25°C -30 AG 3.15 B) OLT R (d -40 V 3.10 R POUT 3.05 PS --6500 NO LOAD O -40°C 10nF R D 3.00 -70 1nF 2.95 -80 -10 -8 -6 -4 -2 0 10 100 1k 10k 100k 1M LOAD CURRENT (mA) FREQUENCY (Hz) FIGURE 7. LOAD CURRENT vs DROPOUT FIGURE 8. PSRR AT DIFFERENT CAPACITIVE LOADS 100 90 NO LOAD 80 CH2 HIGH 4.80V 70 1nF 60 Ω) (T 50 U O 40 10nF Z 30 CH2 LOW 20 -500mV 10 0 1 10 100 1k 10k 100k 1M FREQUENCY (Hz) FIGURE 9. Z vs FREQUENCY FIGURE 10. TURN-ON TIME, NO LOAD OUT CH2 HIGH 4.80V CH2 LOW -500mV FIGURE 11. TURN-ON TIME, 1kΩ FIGURE 12. LOAD TRANSIENT RESPONSE, 1nF LOAD CAPACITANCE 8 FN6706.6 December 19, 2013

ISL21060 Typical Performance Curves (ISL21060-30) (R = 100kΩ) (Continued) EXT FIGURE 13. LOAD TRANSIENT RESPONSE, 100nF LOAD FIGURE 14. LINE TRANSIENT RESPONSE, 1nF LOAD CAPACITANCE 3.5 3.0 +125°C 2.5 2.0 V) (T 1.5 U O V 1.0 +25°C 0.5 -40°C 0.0 -0.5 0 1 2 3 4 5 6 VEN (V) FIGURE 15. LINE TRANSIENT RESPONSE, 100nF FIGURE 16. V vs V OUT ENABLE 9 FN6706.6 December 19, 2013

ISL21060 Typical Performance Curves (ISL21060-41) (R = 100kΩ) EXT 4.100 25 24 4.099 23 UNIT 3 4.098 22 V (V)OUT 444...000999567 UNIT 2 UNIT 1 I (µA)IN 122901 UUNNIITT 21 18 4.094 UNIT 3 17 4.093 16 4.092 15 -40 10 60 110 4.3 4.5 4.7 4.9 5.1 5.3 5.5 TEMPERATURE (°C) VIN (V) FIGURE 17. V vs TEMPERATURE, 3 UNITS FIGURE 18. I vs V , 3 TEMPERATURES OUT IN IN 0.6 100 90 0.5 +125°C 80 +25°C -40°C 70 0.4 +25°C 60 µA) 0.3 µA) 50 (N (N +125°C II II 40 0.2 -40°C 30 20 0.1 10 0.0 0 0 2 4 6 0 2 4 6 VIN (V) VENABLE (V) FIGURE 19. I vs V [SLEEP MODE], 3 TEMPERATURES FIGURE 20. I vs V , 3 TEMPERATURES IN IN IN ENABLE 0.8 75 0.6 +125°C 25 V) 0.4 = 5 +25°C N V (mV)OUT 0.02 +25°C +125°C V (µV)OUTZED TO VI --7255 -40°C Δ LI A -0.2 M R -40°C O -125 -0.4 (N -0.6 -175 -12 -10 -8 -6 -4 -2 0 2 4 6 4.0 4.2 4.4 4.6 4.8 5.0 5.2 5.4 5.6 LOAD CURRENT (mA) VIN (V) FIGURE 21. LOAD REGULATION FIGURE 22. LINE REGULATION OVER-TEMPERATURE 10 FN6706.6 December 19, 2013

ISL21060 Typical Performance Curves (ISL21060-41) (R = 100kΩ) (Continued) EXT 4.40 0 1nF -10 4.35 +125°C V) -20 E ( 4.30 G A -30 VOLT 4.25 +25°C R (dB) -40 T 4.20 R OU PS -50 OP 4.15 NO LOAD 10nF R -60 D -40°C 4.10 -70 4.05 -80 -8 -7 -6 -5 -4 -3 -2 -1 0 10 100 1k 10k 100k 1M LOAD CURRENT (mA) FREQUENCY (Hz) FIGURE 23. LOAD CURRENT vs DROPOUT FIGURE 24. PSRR AT DIFFERENT CAPACITIVE LOADS 160 NO LOAD 140 1nF CH2 PK-PK 120 100nF -5.17V 100 Ω) (T 80 U 10nF O Z 60 40 20 0 1 10 100 1k 10k 100k 1M FREQUENCY (Hz) FIGURE 25. Z vs FREQUENCY FIGURE 26. TURN-ON TIME, NO LOAD OUT Δ: 8.20V @: 6.84V CH2 PK-PK CH2 PK-PK 5.90V 2.12V FIGURE 27. TURN-ON TIME, 1kΩ FIGURE 28. LOAD TRANSIENT RESPONSE, 100nF LOAD CAPACITANCE 11 FN6706.6 December 19, 2013

ISL21060 Typical Performance Curves (ISL21060-41) (R = 100kΩ) (Continued) EXT Δ: 2.05V @: 1.66V CH2 PK-PK 1.48V CH2 PK-PK 2.12V FIGURE 29. LOAD TRANSIENT RESPONSE, 1nF LOAD FIGURE 30. LINE TRANSIENT RESPONSE, 1nF LOAD CAPACITANCE Δ: 2.05V @: 1.66V 4.5 CH2 PK-PK 1.52V 4.0 3.5 3.0 V) 2.5 (T U 2.0 O V 1.5 -40°C 1.0 +125°C 0.5 0.0 0 1 2 3 4 5 6 VENABLE (V) FIGURE 31. LINE TRANSIENT RESPONSE, 100nF LOAD FIGURE 32. V vs V OUT ENABLE CAPACITANCE 12 FN6706.6 December 19, 2013

ISL21060 Typical Performance Curves (ISL21060-25) (R = 100kΩ) EXT 2.5030 16 2.5025 +125°C 15 2.5020 UNIT 1 14 2.5015 UNIT 2 +25°C V) 2.5010 13 (UT2.5005 µA) 12 VO2.5000 UNIT 3 I (IN 11 -40°C 2.4995 10 2.4990 9 2.4985 2.4980 8 -50 0 50 100 150 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 TEMPERATURE (°C) VIN (V) FIGURE 33. V vs TEMPERATURE, 3 UNITS FIGURE 34. I vs V , 3 TEMPERATURES OUT IN IN 0.6 90 80 -40°C 0.5 +125°C +25°C 70 0.4 60 +125°C µA) 0.3 +25°C µA) 50 (N (N 40 II II 0.2 -40°C 30 20 0.1 10 0.0 0 0 1 2 3 4 5 6 0 1 2 3 4 5 6 VIN (V) VENABLE (V) FIGURE 35. I vs V [SLEEP MODE], 3 TEMPERATURES FIGURE 36. I vs V , 3 TEMPERATURES IN IN IN ENABLE 0.6 50 0.5 -40°C LINE REGULATION NORMALIZED AT VIN = 5 0.4 0 +25°C +125°C 0.3 mV) 0.2 V) -50 V (ΔOUT 0.10 +25°C V (µΔOUT-100 -0.1 -40°C +125°C -0.2 LOAD REGULATION -150 -0.3 NORMALIZED TO VOUT WITH NO LOAD -0.4 -200 -12 -10 -8 -6 -4 -2 0 2 4 6 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 LOAD CURRENT (mA) VVIINN ((VV)) FIGURE 37. LOAD REGULATION FIGURE 38. LINE REGULATION OVER-TEMPERATURE 13 FN6706.6 December 19, 2013

ISL21060 Typical Performance Curves (ISL21060-25) (R = 100kΩ) (Continued) EXT Δ: 3.80V 3.00 @: 8.72V 2.95 CH2 PK-PK 5.83V 2.90 E (V) 2.85 +125°C G A 2.80 T OL 2.75 V T 2.70 +25°C U O 2.65 P O 2.60 R D 2.55 -40°C 2.50 2.45 -11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 LOAD CURRENT (mA) FIGURE 39. LOAD CURRENT vs DROPOUT FIGURE 40. TURN-ON TIME, NO LOAD Δ: 3.80V Δ: 1.90V @: 8.72V @: 3.40V CH2 PK-PK CH2 PK-PK 5.80V 1.54V FIGURE 41. TURN-ON TIME, 1kΩ FIGURE 42. LOAD TRANSIENT RESPONSE, 1nF LOAD CAPACITANCE Δ: 1.90V Δ: 1.90V @: 3.40V @: 4.44V CH2 PK-PK CH2 PK-PK 2.84V 1.30V FIGURE 43. LOAD TRANSIENT RESPONSE, 100nF LOAD FIGURE 44. LINE TRANSIENT RESPONSE, 1nF LOAD CAPACITANCE 14 FN6706.6 December 19, 2013

ISL21060 Typical Performance Curves (ISL21060-25) (R = 100kΩ) (Continued) EXT 3.0 2.5 2.0 -40°C 1.5 V) (T U 1.0 O V 0.5 +125°C 0 +25°C -0.5 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 VENABLE (V) FIGURE 45. LINE TRANSIENT RESPONSE, 100nF FIGURE 46. V vs V OUT ENABLE Typical Performance Curves (ISL21060-20) (R = 100kΩ) EXT 2.052 14 13 2.051 +125°C UNIT 2 12 2.050 11 V) V (OUT22..004489 UNIT 1 UNIT 3 I (µA)IN 109 -40°C +25°C 8 2.047 7 2.046 6 -50 0 50 100 150 2 3 4 5 6 TEMPERATURE (°C) VIN (V) FIGURE 47. VOUT vs TEMPERATURE, 3 UNITS FIGURE 48. IIN vs VIN, 3 TEMPERATURES 0.7 90 +125°C 80 0.6 -40°C 70 +25°C 0.5 60 I (µA)IN 00..34 +25°C -40°C I (µA)IN 4500 +125°C 30 0.2 20 0.1 10 0 0 0 1 2 3 4 5 6 0 1 2 3 4 5 6 VIN (V) VENABLE (V) FIGURE 49. I vs V [SLEEP MODE], 3 TEMPERATURES FIGURE 50. I vs V , 3 TEMPERATURES IN IN IN ENABLE 15 FN6706.6 December 19, 2013

ISL21060 Typical Performance Curves (ISL21060-20) (R = 100kΩ) (Continued) EXT 0.6 100 -40°C 50 0.4 +25°C V) 0 mV) 0.2 +25°C T (µ -50 F ( PU DIF UT -100 GE 0 N O -150 -40°C OLTA -0.2 +125°C NGE I -200 +125°C V A H C -250 -0.4 -300 -0.6 -350 -12 -10 -8 -6 -4 -2 0 2 4 6 2 3 4 5 6 LOAD (mA) VIN (V) FIGURE 51. LOAD REGULATION FIGURE 52. LINE REGULATION OVER-TEMPERATURE 2.8 0 NO LOAD 2.7 -10 GE 2.6 +125°C -20 1nF A LT 2.5 B) -30 O d T V 2.4 R ( -40 OU +25°C SR P 2.3 P -50 O 10nF R D 2.2 -60 -40°C 2.1 -70 2.0 -80 -12 -10 -8 -6 -4 -2 0 10 100 1k 10k 100k 1M LOAD CURRENT (mA) FREQUENCY (Hz) FIGURE 53. LOAD CURRENT vs DROPOUT FIGURE 54. PSRR AT DIFFERENT CAPACITIVE LOADS 90 80 NO LOAD 70 60 10nF Ω) 50 (T ZOU 40 1nF 30 20 10 0 1 10 100 1k 10k 100k 1M FREQUENCY (Hz) FIGURE 55. Z vs FREQUENCY FIGURE 56. TURN-ON TIME, NO LOAD OUT 16 FN6706.6 December 19, 2013

ISL21060 Typical Performance Curves (ISL21060-20) (R = 100kΩ) (Continued) EXT FIGURE 57. TURN-ON TIME, 1kΩ FIGURE 58. LOAD TRANSIENT RESPONSE, 1nF LOAD CAPACITANCE FIGURE 59. LOAD TRANSIENT RESPONSE, 100nF LOAD FIGURE 60. LINE TRANSIENT RESPONSE, 1nF LOAD CAPACITANCE 2.5 2.0 -40°C 1.5 V) (UT1.0 O V 0.5 +125°C 0.0 +25°C -0.5 0 1 2 3 4 5 6 VENABLE (V) FIGURE 61. LINE TRANSIENT RESPONSE, 100nF FIGURE 62. VOUT vs VENABLE 17 FN6706.6 December 19, 2013

ISL21060 FGA Technology Board Assembly Considerations The ISL21060 voltage reference floating gate references possess FGA™ references provide high accuracy and low temperature very low drift and supply current. The charge stored on a floating drift but some PC board assembly precautions are necessary. gate cell is set precisely in manufacturing. The reference voltage Normal Output voltage shifts of 100µV to 1mV can be expected output itself is a buffered version of the floating gate voltage. The with Pb-free reflow profiles or wave solder on multi-layer FR4 PC resulting reference device has excellent characteristics which are boards. Precautions should be taken to avoid excessive heat or unique in the industry and include very low temperature drift, high extended exposure to high reflow or wave solder temperatures, initial accuracy, and almost zero supply current. Also, the reference this may reduce device initial accuracy. voltage itself is not limited by voltage bandgaps or zener settings, Post-assembly x-ray inspection may also lead to permanent so a wide range of reference voltages can be programmed changes in device output voltage and should be minimized or (standard voltage settings are provided, but customer-specific avoided. If x-ray inspection is required, it is advisable to monitor voltages are available). the reference output voltage to verify excessive shift has not The process used for these reference devices is a floating gate occurred. If large amounts of shift are observed, it is best to add an CMOS process, and the amplifier circuitry uses CMOS transistors X-ray shield consisting of thin zinc (300µm) sheeting to allow clear for amplifier and output drive. This circuitry provides excellent imaging, yet block x-ray energy that affects the FGA™ reference. accuracy with a trade-off in output noise level and load Special Applications Considerations regulation due to the MOS device characteristics. These limitations are addressed with circuit techniques discussed in In addition to post-assembly examination, there are also other other sections. X-ray sources that may affect the FGA™ reference long term accuracy. Airport screening machines contain X-rays and will Micropower Supply Current and Output have a cumulative effect on the voltage reference output Enable accuracy. Carry-on luggage screening uses low level X-rays and is not a major source of output voltage shift, although if a product The ISL21060 consumes extremely low supply current due to the is expected to pass through that type of screening over 100 times proprietary FGA technology. Low noise performance is achieved it may need to consider shielding with copper or aluminum. using optimized biasing techniques. Supply current is typically Checked luggage X-rays are higher intensity and can cause 16µA and noise is 10µV , benefitting precision, low noise P-P output voltage shift in much fewer passes, so devices expected to portable applications, such as handheld meters and instruments. go through those machines should definitely consider shielding. The ISL21060 devices have the EN pin, which is used to Note that just two layers of 1/2 ounce copper planes will reduce Enable/Disable the output of the device. When disabled, the the received dose by over 90%. The leadframe for the device reference circuitry itself remains biased at a highly accurate and which is on the bottom also provides similar shielding. reliable state. When enabled, the output is driven to the reference If a device is expected to pass through luggage X-ray machines voltage in a relatively short time (about 300∝s). This feature numerous times, it is advised to mount a 2-layer (minimum) PC allows multiple references to be connected and one of them board on the top, and along with a ground plane underneath will selected. Another application is to disable any loads that draw effectively shield it from 50 to 100 passes through the machine. significant current, saving power in standby or shutdown modes. Since these machines vary in X-ray dose delivered, it is difficult to Board Mounting Considerations produce an accurate maximum pass recommendation. For applications requiring the highest accuracy, board mounting Noise Performance and Reduction location should be reviewed. The device uses a plastic SOIC The output noise voltage in a 0.1Hz to 10Hz bandwidth is typically package, which will subject the die to mild stresses when the PC 10µV . The noise measurement is made with a bandpass filter P-P board is heated and cooled and slightly changes shape. Placing made of a 1-pole high-pass filter with a corner frequency at 0.1Hz the device in areas subject to slight twisting can cause and a 2-pole low-pass filter with a corner frequency at 12.6Hz to degradation of the accuracy of the reference voltage due to these create a filter with a 9.9Hz bandwidth. Noise in the 10kHz to 1MHz die stresses. It is normally best to place the device near the edge bandwidth is approximately 100µV with no capacitance on the P-P of a board, or the shortest side, as the axis of bending is most output. This noise measurement is made with a 2 decade limited at that location. Mounting the device in a cutout also bandpass filter made of a 1-pole high-pass filter with a corner minimizes flex. Obviously, mounting the device on flexprint or frequency at 1/10 of the center frequency and 1-pole low-pass filter extremely thin PC material will likewise cause loss of reference with a corner frequency at 10x the center frequency. Load accuracy. capacitance up to 1µF can be added to improve transient response. 18 FN6706.6 December 19, 2013

ISL21060 Turn-On Time The ISL21060 devices have low supply current and thus the time to bias-up internal circuitry to final values will be longer than with higher power references. Normal turn-on time is typically 300µs. Circuit design must take this into account when looking at power-up delays or sequencing. Temperature Coefficient The limits stated for temperature coefficient (tempco) are governed by the method of measurement. The overwhelming standard for specifying the temperature drift of a reference is to measure the reference voltage at two temperatures take the total variation, (V – V ), and divide by the temperature HIGH LOW extremes of measurement (T –T ). The result is divided by HIGH LOW the nominal reference voltage (at T = +25°C) and multiplied by 106 to yield ppm/°C. This is the “Box” method for specifying temperature coefficient. VOUT Kelvin Sensing The voltage output for the ISL21060 has both a force and a sense output. This enables remote kelvin sensing for highly accurate voltage setting with long traces and higher current loads. The VOUTF (force) can be routed to the load with the shortest, widest trace possible. The VOUTS (sense) is routed with a narrower trace to the point of the actual load where it is connected to the VOUTF trace. The VOUTF and VOUTS traces must always be connected. If there is only a short trace to the load or even a very light load, then they can be connected at or near the ISL21060 device. 19 FN6706.6 December 19, 2013

ISL21060 Typical Application Circuits +2.7 TO 5.5V 0.1µF 10µF LOGIC VIN ENABLE EN VOUTF VOUTS ISL21060-25 VOUT = 2.50V GND 0.001µF VCC RH VOUT X9119 (UNBUFFERED) SDA + 2-WIRE BUS SCL EL8178 VOUT - (BUFFERED) VSS RL FIGURE 63. 2.5V FULL SCALE LOW-DRIFT, 10-BIT ADJUSTABLE VOLTAGE SOURCE WITH LOW POWER DISABLE +2.75V TO 5.5V 0.1µF 10µF LOGIC VIN ENABLE EN VOUTF VOUT SENSE VOUTS ISL21060-25 SEPARATE COPPER TRACE FOR LOAD VOUT = 2.50V SENSE INPUT GND FIGURE 64. KELVIN SENSED LOAD For additional products, see www.intersil.com/en/products.html Intersil products are manufactured, assembled and tested utilizing ISO9001 quality systems as noted in the quality certifications found at www.intersil.com/en/support/qualandreliability.html Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 20 FN6706.6 December 19, 2013

ISL21060 Package Outline Drawing P6.064A 6 LEAD SMALL OUTLINE TRANSISTOR PLASTIC PACKAGE Rev 0, 2/10 1.90 0-3° 0.95 D 0.08-0.20 A 6 5 4 PIN 1 INDEX AREA 2.80 3 1.60 3 5 0.15 C D 2x (0.60) 1 2 3 0.20 C 2x SEE DETAIL X B 0.40 ±0.05 3 0.20 M C A-B D TOP VIEW END VIEW 10° TYP 5 0.15 C A-B (2 PLCS) 2.90 2x H 1.14 ±0.15 1.45 MAX C (0.25) GAUGE 0.10 C SEATING PLANE PLANE 0.05-0.15 SIDE VIEW DETAIL "X" 0.45±0.1 4 (0.60) (1.20) NOTES: (2.40) 1. Dimensions are in millimeters. Dimensions in ( ) for Reference Only. 2. Dimensioning and tolerancing conform to ASME Y14.5M-1994. 3. Dimension is exclusive of mold flash, protrusions or gate burrs. 4. Foot length is measured at reference to guage plane. 5. This dimension is measured at Datum “H”. 6. Package conforms to JEDEC MO-178AA. (0.95) (1.90) TYPICAL RECOMMENDED LAND PATTERN 21 FN6706.6 December 19, 2013