Overview
The LM258AST is a low-power dual operational amplifier produced by STMicroelectronics. This component is designed to operate from a single power supply over a wide range of voltages, making it versatile for various applications. The LM258AST features two independent, high-gain, internally frequency-compensated op amps, which are suitable for use in single power supply systems. It is particularly useful in scenarios where the input common-mode voltage range includes ground, and the output voltage can swing to ground, even with a single power supply voltage.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Part Number | LM258AST | |
| Package | MiniSO-8 | |
| Grade | Industrial | |
| RoHS Compliance Grade | Ecopack3 | |
| Supply Voltage | 3 to 30 | V |
| Operating Temperature Range | -40 to 105 | °C |
| Bandwidth (Unity Gain) | 1.1 MHz | |
| Input Offset Voltage | 2 mV | |
| Input Bias Current | 20 nA | |
| Supply Current per Channel | 0.7 to 1.2 mA (at VCC+ = 5 V) | |
| Common Mode Rejection Ratio | 70 to 85 dB |
Key Features
- Internally frequency-compensated op amps
- Low power consumption with supply current essentially independent of supply voltage
- Large DC voltage gain: 100 dB
- Wide bandwidth (unity gain): 1.1 MHz
- Low input bias current: 20 nA
- Low input offset voltage: 2 mV
- Input common-mode voltage range includes negative rails
- Differential input voltage range equal to the power supply voltage
- Large output voltage swing: 0 V to (VCC+ - 1.5 V)
Applications
- Transducer amplifiers
- DC gain blocks
- Conventional op amp circuits in single power supply systems
- Interface electronics in logic systems
- Active band-pass filters
- Low drift peak detectors
Q & A
- What is the package type of the LM258AST?
The LM258AST comes in a MiniSO-8 package.
- What is the operating temperature range of the LM258AST?
The operating temperature range is -40°C to 105°C.
- What is the bandwidth (unity gain) of the LM258AST?
The bandwidth (unity gain) is 1.1 MHz.
- What is the input offset voltage of the LM258AST?
The input offset voltage is 2 mV.
- What is the input bias current of the LM258AST?
The input bias current is 20 nA.
- What is the supply voltage range for the LM258AST?
The supply voltage range is 3 to 30 V.
- Is the LM258AST RoHS compliant?
Yes, the LM258AST is RoHS compliant with an Ecopack3 grade.
- What are some typical applications of the LM258AST?
Typical applications include transducer amplifiers, DC gain blocks, and conventional op amp circuits in single power supply systems.
- What is the common mode rejection ratio (CMRR) of the LM258AST?
The CMRR is 70 to 85 dB.
- How does the LM258AST handle input common-mode voltage range?
The input common-mode voltage range includes negative rails and can swing to ground even with a single power supply voltage.
