Low-power dual operational amplifier - st.com

1 MiniSO8 DFN8 2x2 TSSOP8SO8 Features Frequency compensation implemented internally Large DC voltage gain: 100 dB Wide bandwidth (unity gain): 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 Differential input voltage range equal to the power supply voltage Large output voltage swing 0 V to [(VCC +) V]DescriptionThis circuit consists of two independent, high gain operational amplifiers (op amps)that have frequency compensation implemented internally. They are designedspecifically for automotive and industrial control systems. The circuit operates froma single power supply over a wide range of voltages.

2 The low power supply drain isindependent of the magnitude of the power supply areas include transducer amplifiers, DC gain blocks and all theconventional op amp circuits which can now be more easily implemented in singlepower supply systems. For example, these circuits can be directly supplied fromthe standard 5 V which is used in logic systems and easily provides the requiredelectronic interfaces without requiring any additional power linear mode, the input common-mode voltage range includes ground and theoutput voltage can also swing to ground, even though operated from a single status linkEnhancedVIOE nhancedESDLM2904LM2904A LM2904W LM2904AW Related productsTSB572 Dual op-amps for Low-power consumption(380 A with MHz GBP)LM2902LM2902 WQuad op-amps versionLM2904 WHLM2904 AHHigh temperatureversion (150 C)

3 Low-power dual operational amplifierLM2904, lm2904a LM2904W, LM2904 AWDatasheetDS0508 - Rev 19 - April 2021 For further information contact your local STMicroelectronics sales diagramFigure 1. Schematic diagram (LM2904, lm2904a )6A4AQ2Q3Q4Q1 InvertinginputNon-invertinginputQ8Q9Q10Q 11Q1250AQ13 OutputQ7Q6Q5 RSCVCCCCGND A 100 Figure 2. Schematic diagram (LM2904W, LM2904AW) A A A ALM2904, lm2904a , LM2904W, LM2904 AWSchematic diagramDS0508 - Rev 19page 2/262 Package pin connectionsFigure 3. DFN8 2x2 package pin connections (top view)123 Out1In1-In1+4 Vcc-876 Vcc+Out2In2-5In2+NC (1)1. The exposed pad of the DFN8 2x2 can be connected to (VCC-) or left 4. MiniSO8, TSSOP8, and SO8 package pin connections (top view)123 Out1In1-In1+4 Vcc-876 Vcc+Out2In2-5In2+++--LM2904, lm2904a , LM2904W, LM2904 AWPackage pin connectionsDS0508 - Rev 19page 3/263 Absolute maximum ratings and operating conditionsTable 1.

4 Absolute maximum ratingsSymbolParameterValueUnitVCCS upply voltage (1) 16 or 32 VVidDifferential input voltage (LM2904, lm2904a ) (2) 32 Differential input voltage (LM2904W, LM2904AW) (2) to VCC + voltage (LM2904, lm2904a ) to 32 Input voltage (LM2904W, LM2904AW) to VCC + short-circuit duration (3)InfinitesIinInput current : Vin driven negative5 mA in DC or 50 mA in AC,(duty cycle = 10 %, T = 1 s)mAInput current : Vin driven positive above VCC + V (LM2904W, LM2904AW)5 mA in DC or 50 mA in AC,(duty cycle = 10 %, T = 1 s)Input current : Vin driven positive above 32 V (5) free-air temperature range-40 to 125 CTstgStorage temperature range-65 to 150 TjMaximum junction temperature150 RthjaThermal resistance junction to ambient (6)DFN8 2x257 C/WMiniSO8190 TSSOP8120SO8125 RthjcThermal resistance junction to case (6)MiniSO839 TSSOP837SO840 ESDHBM: human body model (LM2904, lm2904a ) (7)300 VHBM: human body model (LM2904W, LM2904AW) (7)2000MM: machine model (8)200 CDM: charged device model (9) 1.

5 All voltage values, except differential voltage are with respect to network ground Differential voltages are the non-inverting input terminal with respect to the inverting input from the output to VCC can cause excessive heating if (Vcc +) > 15 V. The maximum outputcurrent is approximately 40 mA, independent of the magnitude of VCC. Destructive dissipation can resultfrom simultaneous short-circuits on all This input current only exists when the voltage at any of the input leads is driven negative. It is due to thecollector-base junction of the input PNP transistor becoming forward-biased and thereby acting as an inputdiode clamp. In addition to this diode action, there is NPN parasitic action on the IC chip. This transistoraction can cause the output voltages of the op amps to go to the VCC voltage level (or to ground for a largeoverdrive) for the time during which an input is driven negative.

6 This is not destructive and normal output isrestored for input voltages above The junction base/substrate of the input PNP transistor polarized in reverse must be protected by a resistorin series with the inputs to limit the input current to 400 A max (R = (Vin - 32 V)/400 A).6. Short-circuits can cause excessive heating and destructive dissipation. Values are , lm2904a , LM2904W, LM2904 AWAbsolute maximum ratings and operating conditionsDS0508 - Rev 19page 4/267. Human body model: a 100 pF capacitor is charged to the specified voltage, then discharged through a resistor between two pins of the device. This is done for all couples of connected pin combinations whilethe other pins are Machine model: a 200 pF capacitor is charged to the specified voltage, then discharged directly betweentwo pins of the device with no external series resistor (internal resistor < 5 ).

7 This is done for all couples ofconnected pin combinations while the other pins are Charged device model: all pins and the package are charged together to the specified voltage and thendischarged directly to the ground through only one pin. This is done for all pins. Table 2. Operating conditionsSymbolParameterValueUnitVCCS upply voltage3 to 30 VVicmCommon mode input voltage range Tamb = 25 CVCC- to VCC+ - mode input voltage range Tmin Tamb TmaxVCC- to VCC+ - 2 ToperOperating free-air temperature range-40 to 125 CLM2904, lm2904a , LM2904W, LM2904 AWAbsolute maximum ratings and operating conditionsDS0508 - Rev 19page 5/264 Electrical characteristicsTable 3. VCC + = 5 V, VCC- = ground, VO = V, RL connected to GND, Tamb = 25 C (unless otherwise specified) offset voltage, Tamb = 25 C, LM2904, LM2904W (1)27mVInput offset voltage, Tamb = 25 C, lm2904a , LM2904AW (1)12 Input offset voltage, Tmin Tamb Tmax, LM2904, LM2904W (1)9 Input offset voltage, Tmin Tamb Tmax, lm2904a , LM2904AW (1)4 Vio/ TInput offset voltage drift730 V/ CIioInput offset current, Tamb = 25 C230nAInput offset current, Tmin Tamb Tmax40 Iio/ TInput offset current drift10300pA/ CIibInput bias current, Tamb = 25 C (2)20150nAInput bias current, Tmin Tamb Tmax (2)

8 200 AvdLarge signal voltage gain, VCC + = 15 V, RL = 2 k ,V = V to V, Tamb = 25 C50100V/mVLarge signal voltage gain, VCC + = 15 V, RL = 2 k ,V = V to V, Tmin Tamb Tmax25 SVRS upply voltage rejection ratio, VCC + = 5 V to 30 V, Vicm = 0 V,Tamb = 25 C65100dBSupply voltage rejection ratio, VCC + = 5 V to 30 V, Vicm = 0 V,Tmin Tamb Tmax65 ICCS upply current, all amp, no load, Tamb = 25 C, VCC + = 5 current, all amp, no load, Tmin Tamb Tmax, VCC + = 30 V2 CMRC ommon-mode rejection ratio, VCC + = 30 V, Vicm = 0 V to V,Tamb = 25 C7085dBCommon-mode rejection ratio, VCC + = 30 V, Vicm = 0 V to 28 V,Tmin Tamb Tmax60 IsourceOutput short-circuit current, VCC + = 15 V, Vo = 2 V, Vid = 1 V204060mAIsinkOutput sink current, VO = 2 V, VCC + = 15 V1020 Output sink current, VO = V, VCC + = 15 V1250 AVOHHigh-level output voltage (VCC + = 30 V), Tamb = 25 C, RL = 2 k 26 VHigh-level output voltage (VCC + = 30 V), Tmin Tamb Tmax2627 High-level output voltage (VCC + = 30 V), Tamb = 25 C, RL = 10 k 27 High-level output voltage (VCC + = 30 V), Tmin Tamb Tmax2728 VOLLow-level output voltage (RL = 10 k ), Tamb = 25 C520mVLow-level output voltage (RL = 10 k )

9 , Tmin Tamb Tmax20LM2904, lm2904a , LM2904W, LM2904 AWElectrical characteristicsDS0508 - Rev 19page 6 rate, VCC + = 15 V, Vin = to 3 V, RL = 2 k , CL =100 pF,unity gain, Tamb = 25 sSlew rate, VCC + = 15 V, Vin = to 3 V, RL = 2 k , CL =100 pF,unity gain, Tmin Tamb bandwidth product, f = 100 kHz, VCC + = 30 V, Vin = 10 mV,RL = 2 k , CL = 100 harmonic distortion, f = 1 kHz, AV = 20 dB, RL = 2 k ,Vo = 2 Vpp, CL = 100 pF, VCC + = 30 input noise voltage, f = 1 kHz, RS = 100 , VCC + = 30 V55nV/ HzVO1/VO2 Channel separation, 1 kHz f 20 kHz (3)120dB = V, 5 V < VCC + < 30 V, 0 V < Vic < (VCC +) - V2. The direction of the input current is out of the IC. This current is essentially constant as long as the output isnot saturated, so there is no change in the loading charge on the input Due to the proximity of external components, ensure that the stray capacitance does not cause couplingbetween these external parts.

10 This can typically be detected at higher frequencies because this type ofcapacitance increases. LM2904, lm2904a , LM2904W, LM2904 AWElectrical characteristicsDS0508 - Rev 19page 7/265 Electrical characteristic curvesFigure 5. Open-loop frequency response)Bd( 10 100 1k 10k 100k 1M 10 MVCC= +10 to + 15 V &FREQUENCY (Hz)10 M VIVCC/2 VCC= 30 V & FVCCVO-+-40 CTamb+125 C140120100806040200-40 CTamb+125 CFigure 6. Large signal frequency responseFREQ UENCY (Hz)1k10k100 k1 MOUTPUTSWING (Vpp)+7V2k 1k 100k +15 VVO-+VI20151050 Figure 7. Voltage follower large signal responseINPUTVOLTAGE (V)OUTPUTVOLTAGE (V)TIME( s)VCC =+15V43210321RL 2 k 010203040 Figure 8. Current sinking output characteristicsFigure 9. Voltage follower small signal response sFigure 10.