Overview
The LM258QT is a low-power dual operational amplifier produced by STMicroelectronics. It is designed to operate from a single power supply over a wide range of voltages, making it versatile for various applications. The LM258QT features internally frequency-compensated op amps, which are suitable for transducer amplifiers, DC gain blocks, and other conventional op amp circuits. This component is particularly useful in single power supply systems, such as those using the standard 5 V logic systems, and it can provide the necessary interface electronics without requiring additional power supplies.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 3 to 30 | V |
| Operating Temperature Range | -40 to 105 | °C |
| DC Voltage Gain | 100 | dB |
| Bandwidth (Unity Gain) | 1.1 | MHz |
| Input Bias Current | 20 | nA |
| Input Offset Voltage | 2 | mV |
| Input Offset Current | 2 | nA |
| Input Common-Mode Voltage Range | (VCC-) to (VCC+ - 1.5) | V |
| Output Voltage Swing | 0 V to (VCC+ - 1.5 V) | V |
| Supply Current per Channel | 0.7 to 1.2 (at VCC+ = 5 V) | mA |
| Package | QFN-8L P 0.5 mm | |
| Grade | Industrial | |
| RoHS Compliance Grade | Ecopack3 |
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 channel essentially independent of supply voltage
- Low input bias current: 20 nA (temperature compensated)
- Low input offset voltage: 2 mV
- Low input offset current: 2 nA
- 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
The LM258QT is suitable for a variety of applications, including:
- Transducer amplifiers
- DC gain blocks
- Conventional op amp circuits in single power supply systems
- Interface electronics in logic systems using standard 5 V power supplies
Q & A
- What is the operating temperature range of the LM258QT?
The operating temperature range of the LM258QT is -40 to 105 °C. - What is the typical supply current per channel for the LM258QT at 5 V supply voltage?
The typical supply current per channel is 0.7 to 1.2 mA at VCC+ = 5 V. - What is the input bias current of the LM258QT?
The input bias current is 20 nA (temperature compensated). - What is the input offset voltage of the LM258QT?
The input offset voltage is 2 mV. - Can the LM258QT operate from a single power supply?
Yes, the LM258QT is designed to operate from a single power supply over a wide range of voltages. - What is the bandwidth (unity gain) of the LM258QT?
The bandwidth (unity gain) is 1.1 MHz (temperature compensated). - What are the common package types available for the LM258QT?
The LM258QT is available in a QFN-8L P 0.5 mm package. - Is the LM258QT RoHS compliant?
Yes, the LM258QT is RoHS compliant with an Ecopack3 grade. - What are some typical applications of the LM258QT?
Typical applications include transducer amplifiers, DC gain blocks, and conventional op amp circuits in single power supply systems. - What is the output voltage swing of the LM258QT?
The output voltage swing is 0 V to (VCC+ - 1.5 V).
