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 V ESD IO supply. LM2904 LM2904A LM2904W LM2904AW Related products Dual op-amps for low- power consumption TSB572 (380 A with 2.5 MHz GBP) LM2902 Quad op-amps version LM2902W High temperature LM2904WH LM2904AH version (150 C) DS0508 - Rev 19 - April 2021 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 6A 4A 100A Q5 Q6 C C Q2 Q3 Inverting Q7 Q1 Q4 input R SC Q11 Non-inverting Output input Q13 Q10 Q12 Q8 Q9 50A GND Figure 2. Schematic diagram (LM2904W, LM2904AW) A A A A DS0508 - Rev 19 page 2/26
