LTC5532 Precision 300MHz to 7GHz RF Detector with Gain and Offset Adjustment FEATURES DESCRIPTIOU n Temperature Compensated Internal Schottky The LTC®5532 is an RF power detector for RF applications Diode RF Detector operating in the 300MHz to 7GHz range. A temperature n Wide Input Frequency Range: 300MHz to 7GHz* compensated Schottky diode peak detector and buffer n Wide Input Power Range: –32dBm to 10dBm amplifier are combined in a small ThinSOTTM or (2mm · n Buffered Detector Output with External Gain Control 2mm) DFN package. The supply voltage range is opti- n Precision V mized for operation from a single lithium-ion cell or 3· OUT Offset Control n Low Starting Voltage: 120mV – 35mV for Gain = 2x NiMH. n Wide V Range of 2.7V to 6V CC The RF input voltage is peak detected using an on-chip n Low Operating Current: 500m A Schottky diode. The detected voltage is buffered and n Available in a Low Profile (1mm) SOT-23 Package supplied to the V pin. and Tiny 6-Lead (2mm · 2mm) DFN Package OUT The LTC5532 output buffer gain is set via external resis- APPLICATIOU S tors. The initial starting voltage of 120mV – 35mV can be precisely adjusted using the V pin. OS n 802.11a, 802.11b, 802.11g, 802.15 n Multimode Mobile Phone Products The LTC5532 operates with RF input power levels from n Optical Data Links –32dBm to 10dBm. n Wireless Data Modems ThinSOT is a trademark of Linear Technology Corporation. n Wireless and Cable Infrastructure *Higher frequency operation is achievable with reduced performance. Consult factory for more n RF Power Alarm information. n Envelope Detector TYPICAL APPLICATIOU Output Voltage vs RF Input Power (SOT-23 Package) 300MHz to 7GHz RF Power Detector 3600 VCC = 3.6V (SOT-23 Package) 3200 TA = 25°C 1000MHz GAIN = 2 33pF mV)2800 VOS = 0V INPURTF 1 RFIN VCC 6 VCC TAGE (2400 300MHz LTC5532ES6 100pF 0.1µF OL2000 4000MHz V 2 GND VOUT 5 PUT 1600 T RA OU1200 REFERENVCOES 3 VOS VM 4 V OUT 800 3000M2H0z00MHz 5000MHz RB 400 6000MHz 7000MHz 0 5532 TA01 –32 –27 –22 –17 –12 –7 –2 3 8 RF INPUT POWER (dBm) 5532 TA02 5532f 1 , LTC and LT are registered trademarks of Linear Technology Corporation.

LTC5532 ABSOLUTE WAXIWUW RATIUGS (Note 1) V , V , V , V .................................. –0.3V to 6.5V Maximum Junction Temperature......................... 125(cid:176) C CC OUT M OS RF Voltage ......................................(V – 1.5V) to 7V Storage Temperature Range................ –65(cid:176) C to 125(cid:176) C IN CC RF Power (RMS)............................................. 12dBm Lead Temperature (Soldering, 10 sec) IN I ...................................................................... 5mA SOT-23 Only.........................................................300(cid:176) C VOUT Operating Temperature Range (Note 2)..–40(cid:176) C to 85(cid:176) C PACKAGE/ORDER IUFORWATIOU TOP VIEW ORDER PART ORDER PART NUMBER TOP VIEW NUMBER VCC 1 6 RFIN VOUT 2 7 5 GND LTC5532EDC RFIN 1 6 VCC LTC5532ES6 GND 2 5 VOUT VM 3 4 VOS VOS 3 4 VM DC6 PART MARKING S6 PART MARKING DC6 PACKAGE S6 PACKAGE 6-LEAD (2mm · 2mm) PLASTIC DFN 6-LEAD PLASTIC TSOT-23 TJMAX = 125(cid:176)C, q JA = 85(cid:176)C/W LAFR TJMAX = 125(cid:176)C, q JA = 250(cid:176)C/W LTAFS EXPOSED PAD (PIN 7) IS GND, MUST BE SOLDERED TO PCB Consult LTC Marketing for parts specified with wider operating temperature ranges. ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T = 25(cid:176) C. V = 3.6V, RF Input Signal is Off, R = R = 1k, V = 0V unless A CC A B OS otherwise noted (Note 2). PARAMETER CONDITIONS MIN TYP MAX UNITS V Operating Voltage l 2.7 6 V CC I Operating Current I = 0mA l 0.5 0.7 mA VCC VOUT V V (No RF Input) R = 2k, V = 0V l 85 100 to 140 155 mV OUT OL LOAD OS V Output Current V = 1.75V, V = 2.7V, D V < 10mV l 2 4 mA OUT OUT CC OUT V Bandwidth C = 33pF, R = 2k (Note 4) 2 MHz OUT LOAD LOAD V Load Capacitance (Note 6) l 33 pF OUT V Slew Rate V = 1V Step, C = 33pF, Total R = 2k (Note 3) 3 V/m s OUT RFIN LOAD LOAD V Noise V = 3V, Noise BW = 1.5MHz, 50W RF Input Termination, 1 mV OUT CC P-P 50W AC Output Termination V Voltage Range l 0 1 V OS V Input Current V = 1V l –0.5 0.5 m A OS OS V Voltage Range l 0 V -1. 8 V M CC V Input Current V = 3.6V l –0.5 0.5 m A M M RF Input Frequency Range (Note 7) 300 to 7000 MHz IN RF Input Power Range RF Frequency = 300MHz to 7GHz (Note 5, 6) V = 2.7V to 6V –32 to 10 dBm IN CC RF AC Input Resistance F = 1000MHz, Pin = –25dBm 220 W IN RF Input Shunt Capacitance F = 1000MHz, Pin = –25dBm 0.65 pF IN Note 1: Absolute Maximum Ratings are those values beyond which the life Note 4: Bandwidth is calculated based on the 10% to 90% rise time of a device may be impaired. equation: BW = 0.35/rise time. Note 2: Specifications over the –40(cid:176) C to 85(cid:176) C operating temperature Note 5: RF performance is tested at 1800MHz range are assured by design, characterization and correlation with Note 6: Guaranteed by design. statistical process controls. Note 7: Higher frequency operation is achievable with reduced Note 3: The rise time at VOUT is measured between 1.3V and 2.3V. performance. Consult factory for more information. 5532f 2

LTC5532 TYPICAL PERFORW AU CE CHARACTERISTICS (R = 20k) Characteristics are for both packages LOAD unless otherwise indicated. Output Voltage vs Supply Voltage Supply Current vs Supply Voltage (RF Input Signal Off) (RF Input Signal Off) Output Delay vs RF Input Power 130 500 1000 GVOASIN = = 0 2V VTAC C= =2 53°.6CV E (mV) 125 TA = 85°C µA) 480 TA = –40°C s)800 VGOASIN = = 0 2V LTAG TA = 25°C ENT ( AY (n600 O R L OUTPUT VUT112105 TA = –40°C SUPPLY CUR 446400 TTAA == 2855°°CC OUTPUT DE400 90% SWITCHING VO 200 50% SWITCHING 110 420 0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 –10 –5 0 5 10 SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V) RF INPUT POWER (dBm) 5532 G01 5532 G02 5532 G03 Typical Detector Characteristics, Typical Detector Characteristics, Typical Detector Characteristics, 300MHz, Gain = 2, VOS = 0V 1000MHz, Gain = 2, VOS = 0V 2000MHz, Gain = 2, VOS = 0V 3600 3600 3600 VCC = 3.6V VCC = 3.6V VCC = 3.6V 3200 3200 3200 GE (mV)22840000 TA = –40°C GE (mV)22840000 TA = –40°C GE (mV)22840000 TA = –40°C A A A T T T L2000 L2000 L2000 O O O UT V1600 TA = 25°C UT V1600 TA = 25°C UT V1600 TA = 25°C P P P T T T U1200 U1200 U1200 O O O OUT 800 OUT 800 OUT 800 V TA = 85°C V TA = 85°C V TA = 85°C 400 400 400 0 0 0 –32–28–24–20–16 –12 –8 –4 0 4 8 –32–28–24–20–16 –12 –8 –4 0 4 8 –32–28–24–20–16 –12 –8 –4 0 4 8 RF INPUT POWER (dBm) RF INPUT POWER (dBm) RF INPUT POWER (dBm) 5532 G04 5532 G05 5532 G06 Typical Detector Characteristics, Typical Detector Characteristics, Typical Detector Characteristics, 5000MHz, Gain = 2, V = 0V OS 3000MHz, Gain = 2, V = 0V 4000MHz, Gain = 2, V = 0V (SOT-23 Package) OS OS 3600 3600 3600 VCC = 3.6V VCC = 3.6V VCC = 3.6V 3200 3200 3200 V)2800 V)2800 V)2800 GE (m2400 TA = –40°C GE (m2400 TA = –40°C GE (m2400 TA = –40°C A A A T T T L2000 L2000 L2000 O O O UT V1600 TA = 25°C UT V1600 TA = 25°C UT V1600 TA = 25°C P P P T T T U1200 U1200 U1200 O O O V OUT 800 TA = 85°C V OUT 800 TA = 85°C V OUT 800 TA = 85°C 400 400 400 0 0 0 –32–28–24–20–16 –12 –8 –4 0 4 8 –32–28–24–20–16 –12 –8 –4 0 4 8 –32–28–24–20–16 –12 –8 –4 0 4 8 RF INPUT POWER (dBm) RF INPUT POWER (dBm) RF INPUT POWER (dBm) 5532 G07 5532 G08 5532 G09 5532f 3

LTC5532 TYPICAL PERFORW AU CE CHARACTERISTICS (R = 20k) Characteristics are for both packages LOAD unless otherwise indicated. Typical Detector Characteristics, Typical Detector Characteristics, 6000MHz, Gain = 2, V = 0V 7000MHz, Gain = 2, V = 0V Typical Detector Characteristics, OS OS (SOT-23 Package) (SOT-23 Package) 300MHz, Gain = 4, V = 0V OS 3600 3600 3600 VCC = 3.6V VCC = 3.6V VCC = 3.6V 3200 3200 3200 TA = –40°C V)2800 V)2800 V)2800 TAGE (m2400 TA = –40°C TAGE (m2400 TA = –40°C TAGE (m2400 L2000 L2000 L2000 O O O PUT V1600 TA = 25°C PUT V1600 TA = 25°C PUT V1600 TA = 25°C T T T U1200 U1200 U1200 OOUT 800 OOUT 800 OOUT 800 TA = 85°C V TA = 85°C V V 400 400 400 TA = 85°C 0 0 0 –32–28–24–20–16 –12 –8 –4 0 4 8 –32 –27 –22 –17 –12 –7 –2 3 8 –32–28–24–20–16 –12 –8 –4 0 4 8 RF INPUT POWER (dBm) RF INPUT POWER (dBm) RF INPUT POWER (dBm) 5532 G07 5532 G11 5532 G12 Typical Detector Characteristics, V vs RF Input Power and V , OUT OS 1000MHz, Gain = 4, VOS = 0V 300MHz, Gain = 2 3600 3600 VCC = 3.6V VCC = 3.6V 3200 3200 TA = 25°C V)2800 TA = –40°C V)2800 m m GE (2400 GE (2400 A A T T L2000 L2000 UT VO1600 TA = 25°C UT VO1600 P P T T OU1200 OU1200 VOS = 1V OUT 800 OUT 800 V TA = 85°C V VOS = 0.5V 400 400 VOS = 0.2V VOS = 0V 0 0 –32–28–24–20–16 –12 –8 –4 0 4 8 –32–28–24–20–16 –12 –8 –4 0 4 8 RF INPUT POWER (dBm) RF INPUT POWER (dBm) 5532 G13 5532 G14 V vs RF Input Power, 300MHz OUT V vs RF Input Power and V , and 1000MHz, Gain = 2 and 4, OUT OS 1000MHz, Gain = 2 VOS = 0V 3600 3600 VCC = 3.6V VCC = 3.6V 300MHz 3200 TA = 25°C 3200 TA = 25°C GAIN = 4 V)2800 V)2800 1000MHz m m GE (2400 GE (2400 GAIN = 4 A A T T L2000 L2000 O O V V UT 1600 UT 1600 P P T T OU1200 VOS = 1V OU1200 OUT 800 OUT 800 300MHz V VOS = 0.5V V GAIN = 2 400 VOS = 0.2V VOS = 0V 400 1G0A0I0NM =H 2z 0 0 –32–28–24–20–16 –12 –8 –4 0 4 8 –32–28–24–20–16 –12 –8 –4 0 4 8 RF INPUT POWER (dBm) RF INPUT POWER (dBm) 5532 G15 5532 G16 5532f 4

LTC5532 TYPICAL PERFORW AU CE CHARACTERISTICS (R = 20k) Characteristics are for both packages LOAD unless otherwise indicated. V Slope vs RF Input Power V Slope vs RF Input Power V Slope vs RF Input Power OUT OUT OUT at 300MHz at 1000MHz at 2000MHz 1000 1000 1000 VCC = 3.6V VCC = 3.6V VCC = 3.6V GAIN = 2 GAIN = 2 GAIN = 2 VOS = 0V VOS = 0V VOS = 0V V/dB)100 V/dB)100 V/dB)100 m m m PE ( PE ( PE ( SLO TA = –40°C SLO TA = –40°C SLO TA = –40°C OUT 10 TA = 85°C OUT 10 TA = 85°C OUT 10 TA = 85°C V V V TA = 25°C TA = 25°C TA = 25°C 1 1 1 –30 –25 –20 –15 –10 –5 0 5 –30 –25 –20 –15 –10 –5 0 5 –30 –25 –20 –15 –10 –5 0 5 RF INPUT POWER (dBm) RF INPUT POWER (dBm) RF INPUT POWER (dBm) 5532 G17 5532 G18 5532 G19 V Slope vs RF Input Power V Slope vs RF Input Power V Slope vs RF Input Power OUT OUT OUT at 3000MHz at 4000MHz at 5000MHz (SOT-23 Package) 1000 1000 1000 VCC = 3.6V VCC = 3.6V VCC = 3.6V GAIN = 2 GAIN = 2 GAIN = 2 VOS = 0V VOS = 0V VOS = 0V dB)100 dB)100 dB)100 V/ V/ V/ m m m E ( E ( E ( P P P SLO TA = –40°C SLO TA = –40°C SLO TA = –40°C OUT 10 TA = 85°C OUT 10 TA = 85°C OUT 10 TA = 85°C V V V TA = 25°C TA = 25°C TA = 25°C 1 1 1 –30 –25 –20 –15 –10 –5 0 5 –30 –25 –20 –15 –10 –5 0 5 –30 –25 –20 –15 –10 –5 0 5 RF INPUT POWER (dBm) RF INPUT POWER (dBm) RF INPUT POWER (dBm) 5532 G20 5532 G21 5532 G22 V Slope vs RF Input Power V Slope vs RF Input Power OUT OUT at 6000MHz (SOT-23 Package) at 7000MHz (SOT-23 Package) 1000 1000 VCC = 3.6V VCC = 3.6V GAIN = 2 GAIN = 2 VOS = 0V VOS = 0V dB)100 dB)100 V/ V/ m m E ( E ( P P SLO TA = –40°C SLO TA = –40°C OUT 10 TA = 85°C OUT 10 TA = 85°C V V TA = 25°C TA = 25°C 1 1 –30 –25 –20 –15 –10 –5 0 5 –30 –25 –20 –15 –10 –5 0 5 RF INPUT POWER (dBm) RF INPUT POWER (dBm) 5532 G23 5532 G22 5532f 5

LTC5532 TYPICAL PERFORW AU CE CHARACTERISTICS (DFN package, R = 20k) LOAD Typical Detector Characteristics Typical Detector Characteristics Typical Detector Characteristics 5000MHz, Gain = 2, V = 0V 6000MHz, Gain = 2, V = 0V 7000MHz, Gain = 2, V = 0V OS OS OS (DFN Package) (DFN Package) (DFN Package) 3600 3600 3600 VCC = 3.6V VCC = 3.6V VCC = 3.6V 3200 3200 3200 V)2800 V)2800 V)2800 m m m E (2400 E (2400 E (2400 TAG TA = –40°C TAG TA = –40°C TAG L2000 L2000 L2000 UT VO1600 UT VO1600 TA = 25°C UT VO1600 TA = –40°C TP TA = 25°C TP TP TA = 25°C U1200 U1200 U1200 O O O OUT 800 OUT 800 OUT 800 V TA = 85°C V TA = 85°C V TA = 85°C 400 400 400 0 0 0 –32–28–24–20–16–12 –8 –4 0 4 8 –32–28–24–20–16–12 –8 –4 0 4 8 –32–28–24–20–16–12 –8 –4 0 4 8 RF INPUT POWER (dBm) RF INPUT POWER (dBm) RF INPUT POWER (dBm) 5532 G25 5532 G26 5532 G27 Output Voltage vs RF Input Power V Slope vs RF Input Power OUT (DFN Package) at 5000MHz (DFN Package) 3600 1000 300MHz VCC = 3.6V 3200 1GHz GAIN = 2 mV)2800 24GGHHzz VOS = 0V VOLTAGE (22400000 VCC = 5673GGG.6HHHVzzz E (mV/dB)100 OUTPUT UT11620000 TGVAOA SI=N =2 = 50 °2VC V SLOPOUT 10 TA = –40°C TA = 85°C VO800 TA = 25°C 400 0 1 –32 –27 –22 –17 –12 –7 –2 3 8 –30 –25 –20 –15 –10 –5 0 5 RF INPUT POWER (dBm) RF INPUT POWER (dBm) 5532 G28 5532 G29 V Slope vs RF Input Power V Slope vs RF Input Power OUT OUT at 6000MHz (DFN Package) at 7000MHz (DFN Package) 1000 1000 VCC = 3.6V VCC = 3.6V GAIN = 2 GAIN = 2 VOS = 0V VOS = 0V dB)100 dB)100 V/ V/ m m E ( E ( P P O O L L ST TA = –40°C TA = 85°C ST TA = –40°C TA = 85°C U 10 U 10 VO TA = 25°C VO TA = 25°C 1 1 –30 –25 –20 –15 –10 –5 0 5 –30 –25 –20 –15 –10 –5 0 5 RF INPUT POWER (dBm) RF INPUT POWER (dBm) 5532 G30 5532 G31 5532f 6

LTC5532 TYPICAL PERFORW AU CE CHARACTERISTICS (SOT-23 Package) RFIN Input Impedance (Pin = 0dBm, VCC = 3.6V, TA = 25(cid:176) C) S11 Forward Reflection FREQUENCY RESISTANCE REACTANCE Impedance (GHz) (W ) (W ) 0.30 290.45 –136.22 0.50 234.41 –162.54 0.70 178.25 –170.53 0.90 137.31 –159.89 1.10 109.17 –147.57 1.30 86.30 –136.18 1.50 68.65 –121.74 1.70 57.48 –107.60 1.90 49.79 –96.72 2.10 43.56 –86.70 2.30 38.67 –77.91 2.50 34.82 –70.13 2.70 31.68 –62.86 2.90 29.13 –56.01 3.10 27.17 –49.83 3.30 25.73 –44.24 3.50 24.56 –39.74 0.3000GHz-7.000GHz 5508 TA03 3.70 23.18 –35.35 3.90 22.31 –30.62 4.10 20.73 –26.88 4.30 19.88 –22.31 4.50 19.40 –18.23 4.70 19.05 –14.25 4.90 19.08 –10.21 5.10 19.55 –6.30 5.30 20.85 –2.84 5.50 21.94 –1.49 5.70 20.60 –0.07 5.90 19.29 2.99 6.10 18.69 6.61 6.30 18.53 10.39 6.50 18.74 14.35 6.70 19.79 17.91 6.90 19.75 20.77 7.00 19.99 22.47 5532f 7

LTC5532 TYPICAL PERFORW AU CE CHARACTERISTICS (SOT-23 Package) RF Input Impedance (Pin = –25dBm, V = 3.6V, T = 25(cid:176) C) S11 Forward Reflection IN CC A Impedance FREQUENCY RESISTANCE REACTANCE (GHz) (W ) (W ) 0.30 216.45 –76.47 0.50 190.63 –98.28 0.70 161.98 –112.03 0.90 133.17 –111.53 1.10 113.08 –109.05 1.30 94.55 –107.08 1.50 75.33 –98.50 1.70 63.52 –88.19 1.90 55.19 –80.05 2.10 48.64 –72.23 2.30 43.73 –64.81 2.50 39.71 –58.31 2.70 36.47 –52.27 2.90 33.69 –46.77 3.10 31.61 –41.25 3.30 29.78 –36.61 3.50 28.27 –32.39 0.3000GHz-7.000GHz 5508 TA04 3.70 26.63 –28.12 3.90 26.12 –23.97 4.10 24.20 –20.75 4.30 23.28 –16.69 4.50 22.60 –12.77 4.70 22.21 –9.08 4.90 22.15 –5.24 5.10 22.61 –1.58 5.30 23.90 1.53 5.50 24.97 2.62 5.70 23.51 4.00 5.90 22.25 6.94 6.10 21.57 10.62 6.30 21.43 14.02 6.50 21.69 17.77 6.70 22.68 21.24 6.90 22.81 24.21 7.00 23.07 25.56 5532f 8

LTC5532 TYPICAL PERFORW AU CE CHARACTERISTICS (DFN Package) RF Input Impedance (Pin = 0dBm, V = 3.6V, T = 25(cid:176) C) S11 Forward Reflection IN CC A Impedance FREQUENCY RESISTANCE REACTANCE (GHz) (W ) (W ) 0.30 305.23 –144.87 0.50 238.58 –173.62 0.70 185.32 –177.82 0.90 142.06 –167.59 1.10 111.93 –152.80 1.30 90.59 –139.47 1.50 75.22 –126.45 1.70 63.37 –114.14 1.90 53.84 –103.83 2.10 47.11 –94.33 2.30 41.34 –85.18 2.50 37.00 –76.93 2.70 33.60 –69.47 2.90 30.96 –62.66 3.10 28.55 –56.74 3.30 26.36 –51.02 3.50 24.52 –45.95 0.3000GHz-7.000GHz 5508 TA05 3.70 23.12 –40.97 3.90 22.01 –36.25 4.10 21.13 –31.82 4.30 20.44 –27.51 4.50 19.85 –23.69 4.70 19.42 –20.18 4.90 19.03 –16.54 5.10 18.78 –12.88 5.30 18.69 –9.21 5.50 18.80 –5.72 5.70 19.09 –2.32 5.90 19.68 0.85 6.10 20.05 3.49 6.30 20.18 6.37 6.50 20.35 9.23 6.70 19.84 12.37 6.90 19.81 15.97 7.00 19.95 17.83 5532f 9

LTC5532 TYPICAL PERFORW AU CE CHARACTERISTICS (DFN Package) RF Input Impedance (Pin = –25dBm, V = 3.6V, T = 25(cid:176) C) S11 Forward Reflection IN CC A Impedance FREQUENCY RESISTANCE REACTANCE (GHz) (W ) (W ) 0.30 225.19 –79.32 0.50 196.59 –105.44 0.70 166.23 –114.07 0.90 137.24 –115.88 1.10 114.69 –111.94 1.31 96.83 –106.10 1.50 83.12 –99.28 1.70 72.11 –92.73 1.90 61.69 –85.98 2.10 53.76 –78.71 2.31 47.46 –71.16 2.51 42.60 –64.52 2.70 39.04 –58.61 2.90 36.25 –53.23 3.10 33.41 –48.13 3.30 30.78 –43.37 3.50 28.85 –38.83 0.3000GHz-7.000GHz 5508 TA06 3.70 27.28 –34.09 3.90 26.08 –29.73 4.10 24.97 –25.80 4.30 24.18 –21.94 4.50 23.43 –18.27 4.70 22.88 –15.04 4.90 22.41 –11.56 5.10 22.09 –8.08 5.30 21.82 –4.34 5.50 21.91 –1.29 5.70 22.08 2.15 5.90 22.84 5.32 6.10 23.75 7.51 6.30 23.32 9.47 6.50 22.57 12.41 6.70 22.17 15.79 6.90 22.20 19.34 7.00 22.27 21.21 5532f 10

LTC5532 PIU FUU CTIOU S (SOT-23/DFN) RF (Pin 1/Pin 6): RF Input Voltage. Referenced to V . V (Pin 4/Pin 3): Inverting Input to Buffer Amplifier. IN CC M A coupling capacitor must be used to connect to the RF V (Pin 5/Pin 2): Detector Output. OUT signal source. The frequency range is 300MHz to 7GHz. This pin has an internal 500W termination, an internal VCC (Pin 6/Pin 1): Power Supply Voltage, 2.7V to 6V. VCC Schottky diode detector and a peak detector capacitor. should be bypassed appropriately with ceramic capaci- Operation at higher frequencies is achievable, consult tors. factory for more information. Exposed Pad (NA/Pin 7): Exposed Pad is GND. Must be GND (Pin 2/Pin 5): Ground. soldered to PCB. V (Pin 3/Pin 4): V Offset Voltage Adjustment. From OS OUT 0V to 120mV, V does not change. Above 120mV, V OUT OUT will track V . OS BLOCK DIAGRAW RFSOURCE VCC + VOUT BUFFER – RFIN 500Ω VM 500Ω BIAS 31k 25pF + RF DET + VOS 24k 80k – – 50µA 50µA 80k GND 120mV + 5532 BD 5532f 11

LTC5532 APPLICATIOUS IUFORWATIOU Operation voltage (which is connected to the positive input of the buffer amplifier) exceeds the external voltage on V , V The LTC5532 RF detector integrates several functions to M OUT will switch high. provide RF power detection over frequencies ranging from 300MHz to 7GHz. These functions include an internal fre- The V input controls the DC input voltage to the buffer OS quency compensated buffer amplifier, an RF Schottky di- amplifier. V must be connected to ground if the DC OS ode peak detector and a level shift amplifier to convert the starting voltage is not to be changed. The buffer is initially RF input signal to DC. The LTC5532 has both gain setting trimmed nominally to 120mV (Gain = 2x) with V con- OS and voltage offset adjustment capabilities. nected to ground. The V pin is used to change the initial V starting Buffer Amplifier OS OUT voltage. This function, in combination with gain adjust- The output buffer amplifier is capable of supplying typi- ment enables the LTC5532 output to span the input range cally 4mA into a load. The negative terminal VM is brought of a variety of analog-to-digital converters. VOUT will not out to a pin for gain selection. External resistors connected change until V exceeds 120mV. The starting voltage at OS between VOUT and VM (RA) and VM to ground (RB) will set VOUT for VOS >120mV is: the gain of this amplifier. V = 0.5 • V • Gain OUT OS Gain = 1 + R /R A B where gain is the output buffer gain. For a buffer gain of 2x, The amplifier is unity gain stable; however a minimum V will exactly track V above 120mV. OUT OS gain of two is recommended to improve low output voltage accuracy. The amplifier has a bandwidth of 2MHz RF Detector with a gain of 2. For increased gain applications, the The internal RF Schottky diode peak detector and level bandwidth is reduced according to the formula: shift amplifier convert the RF input signal to a low fre- Bandwidth = 4MHz/(Gain) = 4MHz • R /(R + R ) quency signal. The detector demonstrates excellent effi- B A B ciency and linearity over a wide range of input power. The A capacitor can be placed across the feedback resistor R A Schottky diode is biased at about 55m A and drives a 25pF to shape the frequency response. In addition, the ampli- internal peak detector capacitor. fier can be used as a comparator. V can be connected to M a reference voltage. When the internal detector output Demo Board Schematic VCC 2.7V TO 6V C1 C4 LTC5532ES6 0.1µF RFIN 39pF C2 1 6 RFIN VCC 100pF R1 2 5 (OPT) GND VOUT VOUT C3 R2 3 4 VOS VM (OPT) 10k 1% OFFSET R3 ADJUSTMENT 10k 1% GND 5532 DB 5532f 12

LTC5532 APPLICATIOU S IU FORW ATIOU Applications The LTC5532 can be used as a demodulator for AM and ASK modulated signals with data rates up to 2MHz. The LTC5532 can be used as a self-standing signal strength Depending on specific application needs, the RSSI output measuring receiver for a wide range of input signals from can be split between two branches, providing AC-coupled –32dBm to 10dBm for frequencies from 300MHz to 7GHz. data (or audio) output and DC-coupled RSSI output for Operation at higher frequencies, to 12GHz or above, is signal strength measurements and AGC. achievable with reduced performance. The smaller DFN package version is recommended for these applications The LTC5532 can be used for RF power detection and because of its lower parasitics. Figure 1 plots the output control. Figure 2 is an example of a transmitter power voltage as a function of RF power of a 12GHz CW input controller, using the LTC5532 with a capacitive tap to the signal. power amplifier. A 0.5pF capacitor (C1) followed by a 200W resistor (R1) form a coupling circuit with about 3600 20dB loss at 900MHz referenced to the LTC5532 RF input TA = 25°C 3200 pin. In the actual product implementation, component V)2800 values for the capacitive tap may be different depending on m E (2400 parts placement, PCB parasitics and parameters of the G A LT2000 antenna. O V PUT 1600 The LTC5532 can be configured as a comparator for RF T U1200 O power detection and RF power alarms. The characteriza- V OUT 800 tion data includes a plot of the LTC5532 output delay in 400 response to a positive input step of varying RF level. 0 –32–28–24–20–16–12 –8 –4 0 4 8 RF INPUT POWER (dBm) 5532 F01 Figure 1. Typical Detector Characteristics, 12GHz, Gain = 2, V = 0V (DFN Package) OS R1 TX PA 200Ω C1 LTC5532ES6 MODULE 1% 0.5pF – 0.05pF 1 6 0.1µF Li-Ion CELL BAND RFIN VCC DIPLEXER 2 5 GND VOUT OFFSET 3 4 R2 PCS BAND ADJUSTMENT VOS VM R3 MOBILE PHONE VPC DSP 5532 F02 BSE Figure 2. Mobile Phone Tx Power Control Application Diagram with a Capacitive Tap 5532f 13

LTC5532 PACKAGE DESCRIPTIOU DC Package 6-Lead Plastic DFN (2mm · 2mm) (Reference LTC DWG # 05-08-1703) 0.675 – 0.05 2.50 – 0.05 1.15 – 0.050.61 – 0.05 (2 SIDES) PACKAGE OUTLINE 0.25 – 0.05 0.50 BSC 1.42 – 0.05 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS R = 0.115 0.38 – 0.05 TYP 0.56 – 0.05 4 6 (2 SIDES) 2.00 – 0.10 (4 SIDES) PIN 1 BAR PIN 1 TOP MARK CHAMFER OF (SEE NOTE 6) EXPOSED PAD 3 1 (DC6) DFN 1103 0.25 – 0.05 0.200 REF 0.75 – 0.05 0.50 BSC 1.37 – 0.05 (2 SIDES) 0.00 – 0.05 BOTTOM VIEW—EXPOSED PAD NOTE: 1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WCCD-2) 2. DRAWING NOT TO SCALE 3. ALL DIMENSIONS ARE IN MILLIMETERS 4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE 5. EXPOSED PAD SHALL BE SOLDER PLATED 6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE TOP AND BOTTOM OF PACKAGE 5532f 14

LTC5532 PACKAGE DESCRIPTIOU S6 Package 6-Lead Plastic TSOT-23 (Reference LTC DWG # 05-08-1636) 2.90 BSC 0.62 0.95 (NOTE 4) MAX REF 1.22 REF 1.50 – 1.75 3.85 MAX 2.62 REF 1.4 MIN 2.80 BSC (NOTE 4) PIN ONE ID RECOMMENDED SOLDER PAD LAYOUT 0.30 – 0.45 0.95 BSC PER IPC CALCULATOR 6 PLCS (NOTE 3) 0.80 – 0.90 0.20 BSC 0.01 – 0.10 1.00 MAX DATUM ‘A’ 0.30 – 0.50 REF 1.90 BSC 0.09 – 0.20 (NOTE 3) S6 TSOT-23 0302 NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DRAWING NOT TO SCALE 3. DIMENSIONS ARE INCLUSIVE OF PLATING 4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR 5. MOLD FLASH SHALL NOT EXCEED 0.254mm 6. JEDEC PACKAGE REFERENCE IS MO-193 5532f Information furnished by Linear Technology Corporation is believed to be accurate and reliable. 15 However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.

LTC5532 RELATED PARTS PART NUMBER DESCRIPTION COMMENTS Infrastructure LT5511 High Linearity Upconverting Mixer RF Output to 3GHz, 17dBm IIP3, Integrated LO Buffer LT5512 DC-3GHz High Signal Level Downconverting Mixer DC to 3GHz, 21dBm IIP3, Integrated LO Buffer LT5515 1.5GHz to 2.5GHz Direct Conversion Quadrature Demodulator 20dBm IIP3, Integrated LO Quadrature Generator LT5516 0.8GHz to 1.5GHz Direct Conversion Quadrature Demodulator 21.5dBm IIP3, Integrated LO Quadrature Generator LT5517 40MHz to 900MHz Direct Conversion Quadrature Demodulator 21dBm IIP3, Integrated LO Quadrature Generator LT5519 0.7GHz to 1.4GHz High Linearity Upconverting Mixer 17.1dBm IIP3, 50W Single Ended RF and LO Ports LT5520 1.3GHz to 2.3GHz High Linearity Upconverting Mixer 15.9dBm IIP3, 50W Single Ended RF and LO Ports LT5522 600MHz to 2.7GHz High Linearity Downconverting Mixer 4.5V to 5.25V Supply, 25dBm IIP3 at 900MHz, NF = 12.5dB, 50W Single-Ended RF and LO Ports RF Power Detectors LT5504 800MHz to 2.7GHz RF Measuring Receiver 80dB Dynamic Range, Temperature Compensated, 2.7V to 5.25V Supply LTC®5505 300MHz to 3GHz RF Power Detectors LTC5505-1: –28dBm to 18dBm Range, LTC5505-2: –32dBm to 12dBm Range, Temperature Compensated, 2.7V to 6V Supply LTC5507 100kHz to 1000MHz RF Power Detector –34dBm to 14dBm Range, Temperature Compensated, 2.7V to 6V Supply LTC5508 300MHz to 7GHz RF Power Detector –32dBm to 12dBm Range, Temperature Compensated, SC70 Package LTC5509 300MHz to 3GHz RF Power Detector 36dB Dynamic Range, Temperature Compensated, SC70 Package LTC5530 Precision RF Detector with Shutdown and Gain Adjustment 300MHz to 7GHz, –32dBm to 10dBm Range LTC5531 Precision RF Detector with Shutdown and Offset Adjustment 300MHz to 7GHz, –32dBm to 10dBm Range RF Building Blocks LT5500 1.8GHz to 2.7GHz Receiver Front End 1.8V to 5.25V Supply, Dual-Gain LNA, Mixer, LO Buffer LT5502 400MHz Quadrature IF Demodulator with RSSI 1.8V to 5.25V Supply, 70MHz to 400MHz IF, 84dB Limiting Gain, 90dB RSSI Range LT5503 1.2GHz to 2.7GHz Direct IQ Modulator and 1.8V to 5.25V Supply, Four-Step RF Power Control, Upconverting Mixer 120MHz Modulation Bandwidth LT5506 500MHz Quadrature IF Demodulator with VGA 1.8V to 5.25V Supply, 40MHz to 500MHz IF, –4dB to 57dB Linear Power Gain, 8.8MHz Baseband Bandwidth LT5546 500MHz Ouadrature IF Demodulator with 17MHz Baseband Bandwidth, 40MHz to 500MHz IF, 1.8V to 5.25V VGA and 17MHz Baseband Bandwidth Supply, –7dB to 56dB Linear Power Gain RF Power Controllers LTC1757A RF Power Controller Multiband GSM/DCS/GPRS Mobile Phones LTC1758 RF Power Controller Multiband GSM/DCS/GPRS Mobile Phones LTC1957 RF Power Controller Multiband GSM/DCS/GPRS Mobile Phones LTC4400 SOT-23 RF PA Controller Multiband GSM/DCS/GPRS Phones, 45dB Dynamic Range, 450kHz Loop BW LTC4401 SOT-23 RF PA Controller Multiband GSM/DCS/GPRS Phones, 45dB Dynamic Range, 250kHz Loop BW LTC4402 RF Power Controller for EDGE/TDMA Multiband GSM/GPRS/EDGE Mobile Phones, 450kHz Loop BW LTC4403 RF Power Controller for EDGE/TDMA Multiband GSM/GPRS/EDGE Mobile Phones, 250kHz Loop BW 5532f 16 Linear Technology Corporation LT/TP 0304 1K • PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 l FAX: (408) 434-0507 l www.linear.com ª LINEAR TECHNOLOGY CORPORATION 2003