The INA111BPG4 is a precision, low-power instrumentation amplifier from Burr-Brown (now Texas Instruments). It's designed for accurate amplification of differential signals, making it suitable for applications requiring high common-mode rejection and low noise. This instrumentation amplifier uses a three-op-amp design to achieve high performance.

Applications

• Data Acquisition Systems
• Medical Instrumentation
• Industrial Process Control
• Strain Gauge Amplifiers
• Thermocouple Amplifiers

Features

• Low Input Offset Voltage: 50 µV (maximum)
• Low Input Bias Current: 1 nA (maximum)
• High Common-Mode Rejection Ratio (CMRR): 100 dB (minimum)
• Low Noise: 13 nV/√Hz
• Adjustable Gain: 1 to 10,000
• Wide Supply Voltage Range: ±4.5V to ±18V
• Low Quiescent Current: 2.5 mA (typical)
• 8-Pin DIP Package

Benefits

• Accurate Signal Amplification: Provides accurate amplification of differential signals with minimal error
• High Common-Mode Rejection: Rejects common-mode noise and interference, ensuring accurate measurements
• Low Noise: Minimizes noise in the amplified signal, improving signal-to-noise ratio
• Adjustable Gain: Allows for flexible gain adjustment to match different signal levels
• Low Power Consumption: Low quiescent current reduces power consumption in the system

Additional Details

The INA111BPG4's high CMRR ensures accurate measurements even in noisy environments. The low input offset voltage and bias current minimize errors in the amplified signal. The adjustable gain allows the amplifier to be used with a wide range of input signal levels. The wide supply voltage range provides flexibility in system design. It is commonly used in applications where accurate amplification of low-level signals is required. The device's three-op-amp architecture contributes to its high performance. The external gain resistor allows precise gain adjustment. It is available in a through-hole DIP package.