Overview
The LM158DT, produced by STMicroelectronics, is a low-power dual operational amplifier designed to operate from a single power supply over a wide range of voltages. These circuits consist of two independent, high-gain, internally frequency-compensated op amps. They are suitable for various applications, including transducer amplifiers, DC gain blocks, and conventional op amp circuits, particularly in single power supply systems. The LM158DT can be directly supplied with standard voltages such as 5 V, making it compatible with logic systems and requiring no additional power supply for interface electronics.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Supply Voltage | 3 | 30 | V | |
| Input Offset Voltage | 2 | 5 | mV | |
| Input Offset Current | 2 | 30 | nA | |
| Input Bias Current | 20 | 150 | nA | |
| Large Signal Voltage Gain | 50 | 100 | V/mV | |
| Bandwidth (Unity Gain) | 1.1 | MHz | ||
| Supply Current per Channel | 0.7 | 1.2 | mA | |
| Operating Temperature Range | -55 | 125 | °C | |
| Package | SO-8 |
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 LM158DT is versatile and can be used in various 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 LM158DT?
The typical supply voltage range for the LM158DT is from 3 V to 30 V. - What is the input offset voltage of the LM158DT?
The input offset voltage of the LM158DT is typically 2 mV, with a maximum of 5 mV. - What is the bandwidth of the LM158DT at unity gain?
The bandwidth of the LM158DT at unity gain is 1.1 MHz. - How much current does the LM158DT typically draw from the supply?
The LM158DT typically draws 0.7 mA to 1.2 mA per channel from the supply. - What is the operating temperature range of the LM158DT?
The operating temperature range of the LM158DT is from -55°C to 125°C. - What package options are available for the LM158DT?
The LM158DT is available in an SO-8 package. - Can the LM158DT operate with a single power supply?
Yes, the LM158DT is designed to operate from a single power supply. - What is the common-mode input voltage range for the LM158DT?
The common-mode input voltage range includes negative rails and extends up to (VCC+ - 1.5 V). - How does the LM158DT handle differential input voltage?
The differential input voltage range is equal to the power supply voltage. - What are some typical applications of the LM158DT?
Typical applications include transducer amplifiers, DC gain blocks, AC-coupled amplifiers, DC summing amplifiers, and active band-pass filters.
