INA181A3QDBVRQ1 – TEXAS INSTRUMENTS

The INA181A3QDBVRQ1 is a Texas Instruments precision, single-channel, rail-to-rail input/output instrumentation amplifier optimized for automotive applications. It features a low input bias current of 25 pA (max) and a low input offset voltage of 25 µV (max) at 25°C, crucial for accurate signal acquisition in noisy environments. Operating from a ±5V to ±18V supply, it maintains its performance across a wide temperature range (-40°C to +125°C), making it suitable for harsh automotive conditions. The device boasts a high common-mode rejection ratio (CMRR) exceeding 100dB, effectively minimizing interference from common-mode noise. Packaged in a space-saving 8-pin SOIC (small outline integrated circuit) with a wettable flank, it simplifies PCB assembly. Its high gain accuracy (typically ±0.1%) and low offset drift (typically 0.1 µV/°C) ensure stable, precise amplification, ideal for applications such as sensor signal conditioning (e.g., pressure, temperature, current sensors in automotive powertrains or safety systems) where high accuracy and stability are paramount. The device’s high input impedance (100 MΩ) minimizes loading effects on the source. The “A3” designation specifically denotes the automotive-qualified version, guaranteeing robust performance and reliability under demanding conditions.