TIINA331IDGKT
Overview
The INA331IDGKT is a low-power, wide-bandwidth instrumentation amplifier designed for precision signal conditioning in portable applications. It features a unique topology that provides a 2 MHz bandwidth and a 5 V/us slew rate while consuming only 415uA of quiescent current. With its rail-to-rail output and low input bias current of 0.5 pA, it is ideal for interfacing with high-impedance sensors in single-supply systems.
Why Choose This Part
This amplifier offers an excellent balance of speed and power, providing a 2 MHz -3dB bandwidth at a fraction of the current required by standard high-speed instrumentation amps. Its CMOS input stage ensures extremely low input bias current, while the shutdown mode reduces current draw to just 0.01 uA for power-critical designs.
Applications
Key Specifications
Getting Started
Designers should prioritize decoupling the 2.7V to 5.5V supply pins with low-ESR capacitors placed close to the 8-VSSOP package. Gain is set using two external resistors, allowing for flexibility across different signal ranges. Evaluation can be performed using generic MSOP-8 to DIP breakout boards or custom PCB prototypes following the recommended layout for high-impedance nodes.
