TIINA121UA/2K5
Overview
The INA121UA/2K5 is a low-power FET-input instrumentation amplifier designed for high-impedance applications. It features extremely low input bias current of 4 pA and operates over a wide supply range from +/-2.25V to +/-18V. This device is optimized for accuracy in portable and battery-operated instrumentation where power consumption is a critical constraint.
Why Choose This Part
The FET-input stage provides a nearly negligible 4 pA input bias current, preventing voltage errors in high-impedance circuits. It also includes robust internal input protection up to +/-40V beyond the supply rails, ensuring reliability in harsh industrial or experimental setups.
Applications
Key Specifications
Getting Started
To set the gain, connect a single external resistor between pins 1 and 8 following the formula provided in the datasheet. Ensure the 8-SOIC package is decoupled with 0.1uF capacitors placed close to the supply pins to maintain stability and noise performance. For prototyping, use an SOIC-8 to DIP adapter board to interface with standard breadboards.
