Overview
The INA111AU/1K is a high-speed, FET-input instrumentation amplifier produced by Texas Instruments. It offers excellent performance and is designed for applications requiring high accuracy and fast response times. The amplifier uses a current-feedback topology, which provides extended bandwidth and fast settling times. It is available in 16-pin SOIC packages and is specified for an operating temperature range of -40°C to 85°C.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 16-SOIC (0.295", 7.50mm Width) |
| Operating Temperature Range | -40°C to 85°C |
| Input Bias Current | 20pA max |
| Input Offset Voltage | 500µV max |
| Input Offset Voltage Drift | 5µV/°C max |
| Common-Mode Rejection Ratio | 106dB min |
| Slew Rate | 17 V/µs |
| -3dB Bandwidth | 2MHz |
| Supply Voltage | ±6 V to ±18 V |
| Quiescent Current | 3.3mA |
| Output Current per Channel | 30mA |
Key Features
- FET inputs with low input bias current (20pA max)
- High speed with fast settling time (4µs to 0.01% at G = 100)
- Low offset voltage and drift (500µV max, 5µV/°C max)
- High common-mode rejection ratio (106dB min)
- Current-feedback topology providing extended bandwidth (2MHz at G = 10)
- Single external resistor sets gain from 1 to over 1000
- Available in 8-pin plastic DIP and 16-pin SOIC packages
Applications
- Medical Instrumentation
- Data Acquisition
Q & A
- What is the input bias current of the INA111AU/1K?
The input bias current is 20pA max. - What is the settling time of the INA111AU/1K at a gain of 100?
The settling time is 4µs to 0.01% at G = 100. - What is the common-mode rejection ratio of the INA111AU/1K?
The common-mode rejection ratio is 106dB min. - What are the available package types for the INA111AU/1K?
The INA111AU/1K is available in 8-pin plastic DIP and 16-pin SOIC packages. - What is the operating temperature range of the INA111AU/1K?
The operating temperature range is -40°C to 85°C. - How is the gain of the INA111AU/1K set?
The gain is set by a single external resistor and can range from 1 to over 1000. - What is the slew rate of the INA111AU/1K?
The slew rate is 17 V/µs. - What is the -3dB bandwidth of the INA111AU/1K?
The -3dB bandwidth is 2MHz. - What are the typical applications of the INA111AU/1K?
The typical applications include medical instrumentation and data acquisition. - What is the quiescent current of the INA111AU/1K?
The quiescent current is 3.3mA.
