The PGA281 is a high-precision instrumentation amplifier with a digitally-controllable
gain and signal-integrity test capability. This device uses proprietary autozeroing techniques to
offer low offset voltage, near-zero offset and gain drift, excellent linearity, and nearly no 1/f
The PGA281 is optimized to provide an excellent common-mode rejection of greater than 110
dB (G = 1) over a wide frequency range. Superior common-mode and supply rejection supports
high-resolution, precise measurement. The 36-V supply capability and wide, high-impedance input
range comply with requirements for universal signal measurement.
The PGA281 offers multiple internal gain options from ⅛ V/V (attenuation) to 176 V/V,
making this a universal, high-performance, analog front-end suitable for a wide variety of
applications. The fully differential, rail-to-rail output is designed to easily interface a wide
range of input signals to the low-voltage domain of high-resolution analog-to-digital converters
The PGA281 is available in a TSSOP-16 package and is specified over a temperature range
of –40°C to +105°C.