Overview
The LM2904WDT is a low-power dual operational amplifier manufactured by STMicroelectronics. This device is designed specifically for automotive and industrial control systems, featuring 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 suitable for various applications including transducer amplifiers, DC gain blocks, and conventional op-amp circuits in single power supply systems.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Operating Temperature | -40 | 125 | °C | |
| Supply Voltage | 30 | V | ||
| DC Voltage Gain | 100 | dB | ||
| Bandwidth (Unity Gain) | 1.1 | MHz | ||
| Supply Current per Amplifier | 0.7 | mA | ||
| Input Bias Current | 20 | nA | ||
| Input Offset Current | 2 | nA | ||
| Input Common-Mode Voltage Range | -Vcc | Vcc | V | |
| Output Voltage Swing | 0 | (Vcc - 1.5) | V | |
| Slew Rate | 0.3 | 0.6 | V/μs |
Key Features
- Frequency compensation implemented internally
- Large DC voltage gain: 100 dB
- Wide bandwidth (unity gain): 1.1 MHz (temperature compensated)
- Very low supply current per 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 from 0 V to (Vcc - 1.5 V)
Applications
The LM2904WDT is suitable for a variety of applications, including:
- Transducer amplifiers
- DC gain blocks
- Conventional op-amp circuits in single power supply systems
- Automotive control systems
- Industrial control systems
Q & A
- What is the operating temperature range of the LM2904WDT?
The operating temperature range is from -40°C to 125°C. - What is the maximum supply voltage for the LM2904WDT?
The maximum supply voltage is 30 V. - What is the DC voltage gain of the LM2904WDT?
The DC voltage gain is 100 dB. - What is the bandwidth at unity gain for the LM2904WDT?
The bandwidth at unity gain is 1.1 MHz. - How much current does each amplifier in the LM2904WDT typically consume?
Each amplifier typically consumes 0.7 mA of current. - What is the input bias current of the LM2904WDT?
The input bias current is 20 nA. - What is the input offset current of the LM2904WDT?
The input offset current is 2 nA. - What is the range of the input common-mode voltage for the LM2904WDT?
The input common-mode voltage range includes the negative rail up to the positive supply voltage. - What is the output voltage swing of the LM2904WDT?
The output voltage swing is from 0 V to (Vcc - 1.5 V). - What are some common applications of the LM2904WDT?
Common applications include transducer amplifiers, DC gain blocks, and conventional op-amp circuits in single power supply systems, particularly in automotive and industrial control systems.
