Overview
The LM258APT, produced by STMicroelectronics, is a low-power dual operational amplifier. This device consists of two independent, high-gain, internally frequency-compensated op amps designed to operate from a single power supply over a wide range of voltages. The low-power supply drain is independent of the magnitude of the power supply voltage, making it versatile for various applications.
The LM258APT is part of the LM258 family, which includes several package options such as SO8, TSSOP8, MiniSO8, and DFN8 2x2. This flexibility in packaging allows for easy integration into different system designs.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 3 | - | 30 | V |
| Input Offset Voltage (Vio) | 1 | 3 | 7 | mV |
| Input Offset Current (Iio) | 2 | 10 | 30 | nA |
| Input Bias Current (Iib) | 20 | 50 | 150 | nA |
| Large Signal Voltage Gain (Avd) | 50 | 100 | - | V/mV |
| Common Mode Rejection Ratio (CMRR) | 60 | 85 | - | dB |
| Supply Current (ICC) | 0.7 | 1.2 | - | mA |
| Operating Temperature Range | -40 | - | 105 | °C |
Key Features
- Internally frequency-compensated op amps
- Large DC voltage gain: 100 dB
- Wide bandwidth (unity gain): 1.1 MHz
- Very low supply current per channel, essentially independent of supply voltage
- 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
The LM258APT is suitable for a variety of applications, including:
- Transducer amplifiers
- DC gain blocks
- Conventional op amp circuits in single power supply systems
- AC-coupled inverting and non-inverting amplifiers
- DC summing amplifiers
- High input impedance DC differential amplifiers
- Adjustable gain DC instrumentation amplifiers
- Active band-pass filters
Q & A
- What is the typical supply voltage range for the LM258APT?
The typical supply voltage range for the LM258APT is from 3 V to 30 V.
- What is the input offset voltage of the LM258APT?
The input offset voltage of the LM258APT is typically 3 mV, with a maximum of 7 mV.
- What is the common mode rejection ratio (CMRR) of the LM258APT?
The CMRR of the LM258APT is typically 85 dB, with a minimum of 60 dB.
- What is the operating temperature range for the LM258APT?
The operating temperature range for the LM258APT is from -40°C to 105°C.
- What are the package options available for the LM258APT?
The LM258APT is available in SO8, TSSOP8, MiniSO8, and DFN8 2x2 packages.
- What is the bandwidth of the LM258APT at unity gain?
The bandwidth of the LM258APT at unity gain is 1.1 MHz.
- What is the input bias current of the LM258APT?
The input bias current of the LM258APT is typically 50 nA, with a maximum of 150 nA.
- Can the LM258APT operate from a single power supply?
Yes, the LM258APT is designed to operate from a single power supply over a wide range of voltages.
- What are some common applications of the LM258APT?
The LM258APT is commonly used in transducer amplifiers, DC gain blocks, and conventional op amp circuits in single power supply systems.
- How does the LM258APT handle differential input voltage?
The differential input voltage range of the LM258APT is equal to the power supply voltage.
