PGA280 Programmable Gain Amplifiers Texas Instruments PGA280 Programmable Gain Amplifiers are high-precision devices featuring digitally controllable gain and signal integrity test capability. The TI PGA280 instrumentation amplifier offers low offset voltage, near-zero offset and gain drift, excellent linearity, and nearly no 1/f noise with superior common-mode and supply rejection to support high-resolution precision measurement. The TI PGA280 is optimized for use in high-precision signal instrumentation applications, multiplexed data acquisition devices, high-voltage analog input amplifiers, and universal industrial analog inputs.