Overview
The LM2904N is a low-power dual operational amplifier produced by Intersil (now part of Texas Instruments). It consists of two independent, high-gain operational amplifiers (op-amps) with internal frequency compensation. This device is designed specifically for automotive and industrial control systems and can operate from a single power supply over a wide range of voltages, as well as from split power supplies. The LM2904N is 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 Supply Voltage (Single) | 3 | - | 26 | V |
| Operating Supply Voltage (Dual) | ±1.5 | - | ±13 | V |
| Number of Channels | 2 | - | - | - |
| Operating Supply Current | 0.5 | 1.2 | - | mA |
| Output Current | - | - | 40 | mA |
| Input Offset Voltage | 2 | - | 7 | mV |
| Input Bias Current | - | - | 250 | nA |
| Bandwidth (Unity Gain) | - | 1 | - | MHz |
| Slew Rate | 0.3 | - | 0.6 | V/μs |
| Operating Temperature Range | -40 | - | 85 | °C |
Key Features
- Internally frequency compensated for unity gain
- Large DC voltage gain: 100 dB
- Wide bandwidth (unity gain): 1 MHz (temperature compensated)
- Wide power supply range: Single supply (3 V to 26 V) and dual supplies (±1.5 V to ±13 V)
- Very low supply current drain (500 µA) essentially independent of supply voltage
- Low input offset voltage: 2 mV to 7 mV
- Input common-mode voltage range includes ground
- Differential input voltage range equal to the power supply voltage
- Large output voltage swing
- Short circuit protected outputs
- Compatible with all forms of logic
- Power drain suitable for battery operation
Applications
The LM2904N is versatile and can be used in various applications, including:
- Transducer amplifiers
- DC gain blocks
- Conventional op-amp circuits in single power supply systems
- Automotive and industrial control systems
- Interface electronics in digital systems, such as those using 3.3-V power supply voltage
Q & A
- What is the LM2904N operational amplifier?
The LM2904N is a low-power dual operational amplifier with two independent, high-gain op-amps, designed for automotive and industrial control systems.
- What is the operating supply voltage range for the LM2904N?
The LM2904N can operate from a single supply of 3 V to 26 V or from dual supplies of ±1.5 V to ±13 V.
- What is the typical supply current of the LM2904N?
The typical supply current is 1.2 mA, with a maximum of 2 mA.
- What is the input offset voltage of the LM2904N?
The input offset voltage ranges from 2 mV to 7 mV.
- What is the bandwidth of the LM2904N at unity gain?
The bandwidth at unity gain is 1 MHz, temperature compensated.
- Is the LM2904N suitable for battery operation?
- What are the key advantages of the LM2904N?
The key advantages include internal frequency compensation, wide power supply range, low supply current, and compatibility with all forms of logic.
- Can the LM2904N operate with a single power supply?
- What is the operating temperature range of the LM2904N?
The operating temperature range is -40°C to 85°C.
- What are some common applications of the LM2904N?
- Is the LM2904N short circuit protected?
