Overview
The LM2904WD, produced by STMicroelectronics, is a low-power dual operational amplifier designed for automotive and industrial control systems. This component consists of two independent, high-gain operational amplifiers with internal frequency compensation. It operates from a single power supply over a wide range of voltages, making it versatile for various applications. The LM2904WD is known for its low power supply drain, which is independent of the magnitude of the power supply voltage, and its ability to operate in single power supply systems.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Vio (Input Offset Voltage) | 2 | 7 | 9 | mV |
| ΔVio/ΔT (Input Offset Voltage Drift) | 7 | 30 | - | μV/°C |
| Iio (Input Offset Current) | 2 | 30 | 40 | nA |
| Iib (Input Bias Current) | 20 | - | - | nA |
| SR (Slew Rate) | 0.3 | 0.6 | - | V/μs |
| GBP (Gain Bandwidth Product) | 0.7 | 1.1 | - | MHz |
| VOL (Low Level Output Voltage) | 5 | 20 | - | mV |
| ICC (Supply Current per Amplifier) | - | 0.7 | 1.2 | mA |
Key Features
- Internally frequency-compensated operational amplifiers
- Large DC voltage gain of 100 dB
- Wide bandwidth (unity gain) of 1.1 MHz (temperature compensated)
- Very low supply current per amplifier, essentially independent of supply voltage
- Low input bias current of 20 nA (temperature compensated)
- Low input offset current of 2 nA
- Input common-mode voltage range includes the negative rail
- Differential input voltage range equal to the power supply voltage
- Large output voltage swing from 0 V to (VCC+ - 1.5 V)
- Enhanced ESD performance for the LM2904W variant
Applications
- Transducer amplifiers
- DC gain blocks
- Conventional op-amp circuits in single power supply systems
- Automotive and industrial control systems
- Interface electronics in logic systems
Q & A
- What is the LM2904WD operational amplifier used for?
The LM2904WD is used in automotive and industrial control systems, transducer amplifiers, DC gain blocks, and conventional op-amp circuits in single power supply systems.
- What is the DC voltage gain of the LM2904WD?
The LM2904WD has a large DC voltage gain of 100 dB.
- What is the bandwidth of the LM2904WD?
The LM2904WD has a wide bandwidth (unity gain) of 1.1 MHz, which is temperature compensated.
- How does the LM2904WD handle input common-mode voltage?
The input common-mode voltage range of the LM2904WD includes the negative rail.
- What is the differential input voltage range of the LM2904WD?
The differential input voltage range is equal to the power supply voltage.
- What is the output voltage swing of the LM2904WD?
The output voltage swing is from 0 V to (VCC+ - 1.5 V).
- Does the LM2904WD have enhanced ESD protection?
Yes, the LM2904W variant has enhanced ESD performance.
- What is the typical supply current per amplifier for the LM2904WD?
The typical supply current per amplifier is 0.7 mA, which is essentially independent of the supply voltage.
- What are the operating temperature ranges for the LM2904WD?
The LM2904WD operates over a temperature range of -40°C to 125°C.
- Can the LM2904WD be used in single power supply systems?
Yes, the LM2904WD is designed for use in single power supply systems and can be directly supplied from standard logic system voltages like +5 V.
