LM2904, LM2904A LM2904W, LM2904AW Datasheet Low-power dual operational amplifier Features • Frequency compensation implemented internally DFN8 2x2 MiniSO8 • Large DC voltage gain: 100 dB • Wide bandwidth (unity gain): 1.1 MHz (temperature compensated) • Very low supply current/amplifier, essentially independent of supply voltage • Low input bias current: 20 nA (temperature compensated) • Low input offset current: 2 nA • Input common-mode voltage range includes negative rail TSSOP8 SO8 • Differential input voltage range equal to the power supply voltage • Large output voltage swing 0 V to [(V +) -1.5 V] CC Description This circuit consists of two independent, high gain operational amplifiers (op amps) that have frequency compensation implemented internally. They are designed specifically for automotive and industrial control systems. The circuit operates from a single power supply over a wide range of voltages. The low power supply drain is independent of the magnitude of the power supply voltage. Application areas include transducer amplifiers, DC gain blocks and all the conventional op amp circuits which can now be more easily implemented in single power supply systems. For example, these circuits can be directly supplied from the standard 5 V which is used in logic systems and easily provides the required electronic interfaces without requiring any additional power supply. Maturity status link In linear mode, the input common-mode voltage range includes ground and the Enhanced Enhanced output voltage can also swing to ground, even though operated from a single power VIO ESD supply. LM2904 LM2904A ✓ LM2904W ✓ LM2904AW ✓ ✓ Related products Dual op-amps for low- TSB572 power consumption (380 µA with 2.5 MHz GBP) LM2902 Quad op-amps version LM2902W LM2904WH High temperature LM2904AH version (150 °C) DS0508 - Rev 18 - February 2019 www.st.com For further information contact your local STMicroelectronics sales office.

LM2904, LM2904A, LM2904W, LM2904AW Schematic diagram 1 Schematic diagram Figure 1. Schematic diagram (LM2904, LM2904A) V CC 6µA 4µA 100µA Q5 Q6 CC Q2 Q3 Inverting Q7 input Q1 Q4 R SC Q11 Non-inverting Output input Q13 Q10 Q12 Q8 Q9 50µA GND Figure 2. Schematic diagram (LM2904W, LM2904AW) µA µA µA µA DS0508 - Rev 18 page 2/26

LM2904, LM2904A, LM2904W, LM2904AW Package pin connections 2 Package pin connections Figure 3. DFN8 2x2 package pin connections (top view) Out1 1 8 Vcc+ In1- 2 7 Out2 (1) NC In1+ 3 6 In2- Vcc- 4 5 In2+ 1. The exposed pad of the DFN8 2x2 can be connected to (VCC-) or left floating. Figure 4. MiniSO8, TSSOP8, and SO8 package pin connections (top view) Out1 1 8 Vcc+ In1- 2 - 7 Out2 In1+ 3 + - 6 In2- Vcc- 4 + 5 In2+ DS0508 - Rev 18 page 3/26

LM2904, LM2904A, LM2904W, LM2904AW Absolute maximum ratings and operating conditions 3 Absolute maximum ratings and operating conditions Table 1. Absolute maximum ratings Symbol Parameter Value Unit VCC Supply voltage (1) ±16 or 32 Differential input voltage (LM2904, LM2904A) (2) ±32 Vid Differential input voltage (LM2904W, LM2904AW) (2) -0.3 to VCC +0.3 V Input voltage (LM2904, LM2904A) -0.3 to 32 Vin Input voltage (LM2904W, LM2904AW) -0.3 to VCC +0.3 Output short-circuit duration (3) Infinite s Input current : Vin driven negative 5 mA in DC or 50 mA in AC, (duty cycle = 10 %, T = 1 s) Iin mA Input current : Vin driven positive above AMR value (5) 0.4 Toper Operating free-air temperature range -40 to 125 Tstg Storage temperature range -65 to 150 °C Tj Maximum junction temperature 150 DFN8 2x2 57 MiniSO8 190 Rthja Thermal resistance junction to ambient (6) TSSOP8 120 SO8 125 °C/W MiniSO8 39 Rthjc Thermal resistance junction to case (6) TSSOP8 37 SO8 40 HBM: human body model (LM2904, LM2904A) (7) 300 HBM: human body model (LM2904W, LM2904AW) (7) 2000 V ESD MM: machine model (8) 200 CDM: charged device model (9) 1.5 kV 1. All voltage values, except differential voltage are with respect to network ground terminal. 2. Differential voltages are the non-inverting input terminal with respect to the inverting input terminal. 3. Short-circuits from the output to VCC can cause excessive heating if (Vcc +) > 15 V. The maximum output current is approximately 40 mA, independent of the magnitude of VCC. Destructive dissipation can result from simultaneous short-circuits on all amplifiers. 4. This input current only exists when the voltage at any of the input leads is driven negative. It is due to the collector-base junction of the input PNP transistor becoming forward-biased and thereby acting as an input diode clamp. In addition to this diode action, there is NPN parasitic action on the IC chip. This transistor action can cause the output voltages of the op amps to go to the VCC voltage level (or to ground for a large overdrive) for the time during which an input is driven negative. This is not destructive and normal output is restored for input voltages above -0.3 V. 5. The junction base/substrate of the input PNP transistor polarized in reverse must be protected by a resistor in series with the inputs to limit the input current to 400 µA max (R = (Vin - 32 V)/400 µA). 6. Short-circuits can cause excessive heating and destructive dissipation. Values are typical. 7. Human body model: a 100 pF capacitor is charged to the specified voltage, then discharged through a 1.5 kΩ resistor between two pins of the device. This is done for all couples of connected pin combinations while the other pins are floating. 8. Machine model: a 200 pF capacitor is charged to the specified voltage, then discharged directly between two pins of the device with no external series resistor (internal resistor < 5 Ω). This is done for all couples of connected pin combinations while the other pins are floating. DS0508 - Rev 18 page 4/26

LM2904, LM2904A, LM2904W, LM2904AW Absolute maximum ratings and operating conditions 9. Charged device model: all pins and the package are charged together to the specified voltage and then discharged directly to the ground through only one pin. This is done for all pins. Table 2. Operating conditions Symbol Parameter Value Unit VCC Supply voltage 3 to 30 Common mode input voltage range Tamb = 25 °C VCC- to VCC+ - 1.5 V Vicm Common mode input voltage range Tmin ≤ Tamb ≤ Tmax VCC- to VCC+ - 2 Toper Operating free-air temperature range -40 to 125 °C DS0508 - Rev 18 page 5/26

LM2904, LM2904A, LM2904W, LM2904AW Electrical characteristics 4 Electrical characteristics Table 3. V + = 5 V, V = ground, V = 1.4 V, R connected to GND, T = 25 °C (unless otherwise specified) CC CC- O L amb Symbol Parameter Min. Typ. Max. Unit Input offset voltage, Tamb = 25 °C, LM2904, LM2904W (1) 2 7 Input offset voltage, Tamb = 25 °C, LM2904A, LM2904AW (1) 1 2 Vio mV Input offset voltage, Tmin ≤ Tamb ≤ Tmax, LM2904, LM2904W (1) 9 Input offset voltage, Tmin ≤ Tamb ≤ Tmax, LM2904A, LM2904AW (1) 4 ΔVio/ΔT Input offset voltage drift 7 30 µV/°C Input offset current, Tamb = 25 °C 2 30 Iio nA Input offset current, Tmin ≤ Tamb ≤ Tmax 40 ΔIio/ΔT Input offset current drift 10 300 pA/°C Input bias current, Tamb = 25 °C (2) 20 150 Iib nA Input bias current, Tmin ≤ Tamb ≤ Tmax (2) 200 Large signal voltage gain, VCC + = 15 V, RL = 2 kΩ, 50 100 Vο = 1.4 V to 11.4 V, Tamb = 25 °C Avd V/mV Large signal voltage gain, VCC + = 15 V, RL = 2 kΩ, 25 Vο = 1.4 V to 11.4 V, Tmin ≤ Tamb ≤ Tmax Supply voltage rejection ratio, VCC + = 5 V to 30 V, Vicm = 0 V, 65 100 Tamb = 25 °C SVR dB Supply voltage rejection ratio, VCC + = 5 V to 30 V, Vicm = 0 V, 65 Tmin ≤ Tamb ≤ Tmax Supply current, all amp, no load, Tamb = 25 °C, VCC + = 5 V 0.7 1.2 ICC mA Supply current, all amp, no load, Tmin ≤ Tamb ≤ Tmax, VCC + = 30 V 2 Common-mode rejection ratio, VCC + = 30 V, Vicm = 0 V to 28.5 V, 70 85 Tamb = 25 °C CMR dB Common-mode rejection ratio, VCC + = 30 V, Vicm = 0 V to 28 V, 60 Tmin ≤ Tamb ≤ Tmax Isource Output short-circuit current, VCC + = 15 V, Vo = 2 V, Vid = 1 V 20 40 60 mA Output sink current, VO = 2 V, VCC + = 15 V 10 20 Isink Output sink current, VO = 0.2 V, VCC + = 15 V 12 50 µA High-level output voltage (VCC + = 30 V), Tamb = 25 °C, RL = 2 kΩ 26 High-level output voltage (VCC + = 30 V), Tmin ≤ Tamb ≤ Tmax 26 27 VOH V High-level output voltage (VCC + = 30 V), Tamb = 25 °C, RL = 10 kΩ 27 High-level output voltage (VCC + = 30 V), Tmin ≤ Tamb ≤ Tmax 27 28 Low-level output voltage (RL = 10 kΩ), Tamb = 25 °C 5 20 VOL mV Low-level output voltage (RL = 10 kΩ), Tmin ≤ Tamb ≤ Tmax 20 DS0508 - Rev 18 page 6/26

LM2904, LM2904A, LM2904W, LM2904AW Electrical characteristics Symbol Parameter Min. Typ. Max. Unit Slew rate, VCC + = 15 V, Vin = 0.5 to 3 V, RL = 2 kΩ, CL =100 pF, 0.3 0.6 unity gain, Tamb = 25 °C SR V/µs Slew rate, VCC + = 15 V, Vin = 0.5 to 3 V, RL = 2 kΩ, CL =100 pF, 0.2 unity gain, Tmin ≤ Tamb ≤ Tmax Gain bandwidth product, f = 100 kHz, VCC + = 30 V, Vin = 10 mV, GBP 0.7 1.1 MHz RL = 2 kΩ, CL = 100 pF Total harmonic distortion, f = 1 kHz, AV = 20 dB, RL = 2 kΩ, THD 0.02 % Vo = 2 Vpp, CL = 100 pF, VCC + = 30 V en Equivalent input noise voltage, f = 1 kHz, RS = 100 Ω, VCC + = 30 V 55 nV/√Hz VO1/VO2 Channel separation, 1 kHz ≤ f ≤ 20 kHz (3) 120 dB 1. VO = 1.4 V, 5 V < VCC + < 30 V, 0 V < Vic < (VCC +) - 1.5 V 2. The direction of the input current is out of the IC. This current is essentially constant as long as the output is not saturated, so there is no change in the loading charge on the input lines. 3. Due to the proximity of external components, ensure that the stray capacitance does not cause coupling between these external parts. This can typically be detected at higher frequencies because this type of capacitance increases. DS0508 - Rev 18 page 7/26

LM2904, LM2904A, LM2904W, LM2904AW Electrical characteristic curves 5 Electrical characteristic curves Figure 5. Open-loop frequency response Figure 6. Large signal frequency response 140 20 10 MΩ 100kΩ 120 0.1µF 1kΩ +15V - )B 100 VI - VCC VO Vpp) 15 VI VO (NIGEdA 8600 -VV4C0C°CCC/2=T3+0am Vb& +125°C SWING ( 10 +7V + 2kΩ G T A 40 U LOT TPU 5 V 20 VCC =+10to+15 V& O -40°C Tamb +125°C 0 0 1.0 10 100 1k 10k 100k 1M 10M 1k 10k 100k 1M FREQUENCY(Hz) FREQUENCY(Hz) Figure 7. Voltage follower large signal response Figure 8. Current sinking output characteristics 4 T(V) 3 VRCL C≤ =2 +k1Ω5V UE TPAG 2 OUOLT 1 V 0 V) 3 ( T E 2 U G P A IN LT 1 O V 0 10 20 30 40 TIME(µs) Figure 9. Voltage follower small signal response Figure 10. Current sourcing output characteristics µs DS0508 - Rev 18 page 8/26

LM2904, LM2904A, LM2904W, LM2904AW Electrical characteristic curves Figure 11. Input current vs. temperature Figure 12. Current limiting A n Figure 13. Input voltage range Figure 14. Supply current Figure 15. Voltage gain Figure 16. Input current vs. supply voltage 160 R =20kΩ L B) 120 d N ( GAI 80 RL=2kΩ E G A T L 40 O V 0 10 20 30 POSITIVE SUPPLY VOLTAGE (V) DS0508 - Rev 18 page 9/26

LM2904, LM2904A, LM2904W, LM2904AW Electrical characteristic curves Figure 17. Gain bandwidth product Figure 18. Power supply rejection ratio Figure 19. Common-mode rejection ratio Figure 20. Phase margin vs. capacitive load Phase Margin at Vcc=15V and Vicm=7.5V Vs. Iout and Capacitive load v alue DS0508 - Rev 18 page 10/26

LM2904, LM2904A, LM2904W, LM2904AW Typical single-supply applications 6 Typical single-supply applications Figure 21. AC coupled inverting amplifier Figure 22. AC coupled non-inverting amplifier Rf 100 kΩ Rf R1 R2 R1 (aAsVs=ho-wRn1 A =-10) 100 kΩ 1 MΩ AV=1+RR21 CI 10 kΩ V C1 (as shown AV=11) LM12/2904 Co eo0 2VPP 0.1 µF CI LM12/2904 Co eo0 2 VPP eI ~ R2 R36.2R kBΩ 10R kLΩ 6.2R kBΩ 10R kLΩ VCC 100 kΩ 100 kΩ eI ~ 1 MR3Ω R4 100 kΩ VCC C1 10µF 10C µ2F 10R05 kΩ Figure 23. Non-inverting DC gain Figure 24. DC summing amplifier e1 100 kΩ R2 AV=1+ R1 10 kΩ (asshownAV=101) 1/2 eO +5 V 100 kΩ 1/2 eO LM2904 LM2904 e2 100 kΩ e3 100 kΩ R2 V) 1 MΩ ( 100 kΩ R1 O 10 kΩ e e4 100 kΩ 0 eo = e1 + e2 - e3 - e4 eI (mV) where (e1 + e2) ≥(e3 + e4) to keep eo ≥0 V Figure 26. Using symmetrical amplifiers to reduce input Figure 25. High input Z, DC differential amplifier current R2 R4 100 kΩ 100 kΩ II IB LM12/2904 eo R1 100 kΩ eI R3 IB 2N929 100 kΩ 1/2 +V1 LM2904 LM12/2904 Vo 0.001µF +V2 I B I B If R1 = R5 and R3 = R4 = R6 = R7 1/2 3 MΩ LM2904 2R1 eo = [ 1 + ] (e2 - e1) R2 Input current compensation As shown eo = 101 (e2 - e1) IB 1.5 MΩ DS0508 - Rev 18 page 11/26

LM2904, LM2904A, LM2904W, LM2904AW Typical single-supply applications Figure 27. Low drift peak detector Figure 28. Active bandpass filter R1 100 k Ω IB C1 330 pF 1/2 IB LM12/2904 eo 10R0 2k Ω LM12/2904 47R05 k Ω eI LM2904 1 µF C 2IB Zo +V1 10R M4 Ω 1/2 LM2904 ZI 2N929 0.001 µF C2 R6 R3 330 pF 470 k Ω 2IB IB 100 k Ω 1/2 R7 Vo LM2904 100 k Ω 1 MRΩ 3 3MRΩ LM12/2904 C3 VCC Inputcurrent R8 10 µF IB compensatio n Fo = 1 kHz 100 k Ω Q = 50 Av = 100 (40 dB) DS0508 - Rev 18 page 12/26

LM2904, LM2904A, LM2904W, LM2904AW Macromodel 7 Macromodel An accurate macromodel of the LM2904, LM2904A is available on STMicroelectronics’ web site at: www.st.com . This model is a trade-off between accuracy and complexity (that is, time simulation) of the LM2904, LM2904A operational amplifier. It emulates the nominal performances of a typical device within the specified operating conditions mentioned in the datasheet. It also helps to validate a design approach and to select the right operational amplifier, but it does not replace on-board measurements. DS0508 - Rev 18 page 13/26

LM2904, LM2904A, LM2904W, LM2904AW Package information 8 Package information In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK® is an ST trademark. DS0508 - Rev 18 page 14/26

LM2904, LM2904A, LM2904W, LM2904AW DFN8 2 x 2 package information 8.1 DFN8 2 x 2 package information Figure 29. DFN8 2 x 2 package outline Table 4. DFN8 2 x 2 mechanical data Dimensions Ref. Millimeters Inches Min. Typ. Max. Min. Typ. Max. A 0.51 0.55 0.60 0.020 0.022 0.024 A1 0.05 0.002 A3 0.15 0.006 b 0.18 0.25 0.30 0.007 0.010 0.012 D 1.85 2.00 2.15 0.073 0.079 0.085 D2 1.45 1.60 1.70 0.057 0.063 0.067 E 1.85 2.00 2.15 0.073 0.079 0.085 E2 0.75 0.90 1.00 0.030 0.035 0.039 e 0.50 0.020 L 0.225 0.325 0.425 0.009 0.013 0.017 ddd 0.08 0.003 DS0508 - Rev 18 page 15/26

LM2904, LM2904A, LM2904W, LM2904AW DFN8 2 x 2 package information Figure 30. DFN8 2 x 2 recommended footprint DS0508 - Rev 18 page 16/26

LM2904, LM2904A, LM2904W, LM2904AW MiniSO8 package information 8.2 MiniSO8 package information Figure 31. MiniSO8 package outline Table 5. MiniSO8 package mechanical data Dimensions Ref. Millimeters Inches Min. Typ. Max. Min. Typ. Max. A 1.1 0.043 A1 0 0.15 0 0.0006 A2 0.75 0.85 0.95 0.030 0.033 0.037 b 0.22 0.40 0.009 0.016 c 0.08 0.23 0.003 0.009 D 2.80 3.00 3.20 0.11 0.118 0.126 E 4.65 4.90 5.15 0.183 0.193 0.203 E1 2.80 3.00 3.10 0.11 0.118 0.122 e 0.65 0.026 L 0.40 0.60 0.80 0.016 0.024 0.031 L1 0.95 0.037 L2 0.25 0.010 k 0° 8° 0° 8° ccc 0.10 0.004 DS0508 - Rev 18 page 17/26

LM2904, LM2904A, LM2904W, LM2904AW TSSOP8 package information 8.3 TSSOP8 package information Figure 32. TSSOP8 package outline a a a Dimensions Ref. Millimeters Inches Min. Typ. Max. Min. Typ. Max. A 1.20 0.047 A1 0.05 0.15 0.002 0.006 A2 0.80 1.00 1.05 0.031 0.039 0.041 b 0.19 0.30 0.007 0.012 c 0.09 0.20 0.004 0.008 D 2.90 3.00 3.10 0.114 0.118 0.122 E 6.20 6.40 6.60 0.244 0.252 0.260 E1 4.30 4.40 4.50 0.169 0.173 0.177 e 0.65 0.0256 k 0° 8° 0° 8° L 0.45 0.60 0.75 0.018 0.024 0.030 L1 1 0.039 aaa 0.10 0.004 DS0508 - Rev 18 page 18/26

LM2904, LM2904A, LM2904W, LM2904AW SO8 package information 8.4 SO8 package information Figure 33. SO8 package outline Table 6. SO8 package mechanical data Dimensions Ref. Millimeters Inches Min. Typ. Max. Min. Typ. Max. A 1.75 0.069 A1 0.10 0.25 0.004 0.010 A2 1.25 0.049 b 0.28 0.48 0.011 0.019 c 0.17 0.23 0.007 0.010 D 4.80 4.90 5.00 0.189 0.193 0.197 E 5.80 6.00 6.20 0.228 0.236 0.244 E1 3.80 3.90 4.00 0.150 0.154 0.157 e 1.27 0.050 h 0.25 0.50 0.010 0.020 L 0.40 1.27 0.016 0.050 L1 1.04 0.040 k 0° 8° 0° 8° ccc 0.10 0.004 DS0508 - Rev 18 page 19/26

LM2904, LM2904A, LM2904W, LM2904AW Ordering information 9 Ordering information Table 7. Order codes Order code Temperature range Package Packing Marking LM2904D SO8 Tube LM2904DT SO8 2904 LM2904PT TSSOP8 LM2904ST MiniSO8 K403 LM2904Q2T DFN8 2x2 K1Y LM2904YDT (1) 2904Y SO8 (automotive grade level) LM2904AYDT(1) 2904AY -40 °C to 125 °C LM2904YPT(1) Tape and reel 2904Y TSSOP8 (automotive grade level) LM2904AYPT (1) 904AY LM2904YST (1) MiniSO8 (automotive grade level) K409 LM2904WDT SO8 2904W LM2904WYDT (1) SO8 (automotive grade level) 2904WY LM2904WYPT (1) K04WY TSSOP8 (automotive grade level) LM2904AWYPT (1) K05WY 1. Qualified and characterized according to AEC Q100 and Q003 or equivalent, advanced screening according to AEC Q001 & Q 002 or equivalent. DS0508 - Rev 18 page 20/26

LM2904, LM2904A, LM2904W, LM2904AW Revision history Table 8. Document revision history Date Revision Changes 02-Jan-2002 1 Initial release. PPAP references inserted in the datasheet, see Table 9 on page 21. 20-Jun-2005 2 ESD protection inserted in Table 1 on page 5. 10-Oct-2005 3 PPAP part numbers added in Table 9 on page 21. Pin connections identification added on cover page figure. 12-Dec-2005 4 Thermal resistance junction to case information added see Table 1 on page 5. 01-Feb-2006 5 Maximum junction temperature parameter added in Table 1 on page 5. 02-May-2006 6 Minimum slew rate parameter in temperature Table 3 on page 7. 13-Jul-2006 7 Modified ESD values and added explanation on VCC, Vid in Table 1 on page 5. Added macromodel information. Modified ESD/HBM values in Table 1 on page 5. 28-Feb-2007 8 Updated MiniSO8 package information. Added note relative to automotive grade level part numbers in Table 9 on page 21. Power dissipation value corrected in Table 1: Absolute maximum ratings. Table 2: Operating conditions added. 18-Jun-2007 9 Equivalent input noise voltage parameter added in Table 3. Electrical characteristics curves updated. Figure 19: Phase margin vs capacitive load added. Section 6: Package information updated. Removed power dissipation parameter from Table 1: Absolute maximum ratings. 18-Dec-2007 10 Removed Vopp from electrical characteristics in Table 3. Corrected MiniSO8 package mechanical data in Section 6.4: MiniSO8 package information. Added table of contents. 08-Apr-2008 11 Corrected the scale of Figure 7 (mA not µA). Corrected SO8 package information. Added input current information in Table 1: Absolute maximum ratings. Added L1 parameters in Table 6: SO8 package mechanical data. 02-Jun-2009 12 Added new order codes, LM2904AYD/DT, LM2904AYPT and LM2904AYST in Table 9: Order codes. Added LM2904A on cover page. 13-Apr-2010 13 Corrected footnote (5) in Table 1: Absolute maximum ratings. Removed order code LM2904AYST from Table 9: Order codes. Removed macromodel from Chapter 5 (now available on www.st.com). Added DFN8 2 x 2 mm package information in Chapter 6 and related order codes in Chapter 7. 24-Jan-2012 14 Removed LM2904YD and LM2904AYD order codes from Table 9. Changed note for LM2904YST order code in Table 9. Updated: marking info for LM2904AYPT, package silhouette drawings in the cover page, ΔVio/ΔT and ΔIio/ΔT symbols in Table 3 on page 7 24-Jan-2014 15 Added: ESD info in Features section and Section 2: Package pin connections Removed: LM2904N from Table 9: Order codes. 02-Oct-2015 16 Figure 1: Schematic diagram (1/2 LM2904, LM2904A): updated DS0508 - Rev 18 page 21/26

LM2904, LM2904A, LM2904W, LM2904AW Date Revision Changes Updated layout Removed “plastic micropackage” from SO8 and DFN8 2x2 package silhouettes; removed “thin shrink small outline package” from TSSOP8 package silhouette 16-Feb-2016 17 Table 3: unit of VOL parameter changed from “V” to ‘mV” DFN8 2x2 package information: updated “L” TSSOP8 package information: “aaa” is a typ. value not a max value Added new part numbers LM2904W, LM2904AW, Figure 2. Schematic diagram (LM2904W, LM2904AW) and Table 2. Operating conditions. 15-Feb-2019 18 Updated: Table 1. Absolute maximum ratings, Section 4 Electrical characteristics and Section 9 Ordering information DS0508 - Rev 18 page 22/26

LM2904, LM2904A, LM2904W, LM2904AW Contents Contents 1 Schematic diagram ................................................................2 2 Package pin connections ..........................................................3 3 Absolute maximum ratings and operating conditions ..............................4 4 Electrical characteristics...........................................................6 5 Electrical characteristic curves ....................................................8 6 Typical single-supply applications ................................................11 7 Macromodel ......................................................................13 8 Package information..............................................................14 8.1 DFN8 2 x 2 package information.................................................15 8.2 MiniSO8 package information ...................................................17 8.3 TSSOP8 package information...................................................17 8.4 SO8 package information.......................................................18 9 Ordering information .............................................................20 Revision history .......................................................................21 Contents ..............................................................................23 List of tables ..........................................................................24 List of figures..........................................................................25 DS0508 - Rev 18 page 23/26

LM2904, LM2904A, LM2904W, LM2904AW List of tables List of tables Table 1. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Table 2. Operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Table 3. V + = 5 V, V = ground, V = 1.4 V, R connected to GND, T = 25 °C (unless otherwise specified) . . . . . . 6 CC CC- O L amb Table 4. DFN8 2 x 2 mechanical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Table 5. MiniSO8 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Table 6. SO8 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Table 7. Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Table 8. Document revision history. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 DS0508 - Rev 18 page 24/26

LM2904, LM2904A, LM2904W, LM2904AW List of figures List of figures Figure 1. Schematic diagram (LM2904, LM2904A). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Figure 2. Schematic diagram (LM2904W, LM2904AW) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Figure 3. DFN8 2x2 package pin connections (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Figure 4. MiniSO8, TSSOP8, and SO8 package pin connections (top view). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Figure 5. Open-loop frequency response. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Figure 6. Large signal frequency response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Figure 7. Voltage follower large signal response. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Figure 8. Current sinking output characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Figure 9. Voltage follower small signal response. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Figure 10. Current sourcing output characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Figure 11. Input current vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 12. Current limiting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 13. Input voltage range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 14. Supply current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 15. Voltage gain. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 16. Input current vs. supply voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 17. Gain bandwidth product. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Figure 18. Power supply rejection ratio. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Figure 19. Common-mode rejection ratio. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Figure 20. Phase margin vs. capacitive load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Figure 21. AC coupled inverting amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Figure 22. AC coupled non-inverting amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Figure 23. Non-inverting DC gain. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Figure 24. DC summing amplifier. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Figure 25. High input Z, DC differential amplifier. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Figure 26. Using symmetrical amplifiers to reduce input current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Figure 27. Low drift peak detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Figure 28. Active bandpass filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Figure 29. DFN8 2 x 2 package outline. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Figure 30. DFN8 2 x 2 recommended footprint. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Figure 31. MiniSO8 package outline. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Figure 32. TSSOP8 package outline. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Figure 33. SO8 package outline. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 DS0508 - Rev 18 page 25/26

LM2904, LM2904A, LM2904W, LM2904AW IMPORTANT NOTICE – PLEASE READ CAREFULLY STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement. Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers’ products. No license, express or implied, to any intellectual property right is granted by ST herein. Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product. ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners. Information in this document supersedes and replaces information previously supplied in any prior versions of this document. © 2019 STMicroelectronics – All rights reserved DS0508 - Rev 18 page 26/26