PGA281

PGA281 www.ti.com SBOS664A – MARCH 2013 – REVISED JUNE 2013 Precision, Zero-Drift, High-Voltage, Programmable Gain Instrumentation Amplifier Check for Samples: PGA281 FEATURES 1 234 Wide Input Range: ±15.5 V at ±18 V Supply Binary Gain Steps: 128 V/V to ⅛ V/V Additional Scaling Factor: 1 V/V and 1⅜ V/V Low Offset Voltage: 5 μV at G = 128 Near-Zero Long-Term Drift of Offset Voltage Near-Zero Gain Drift: 0.5 ppm/°C Excellent Linearity: 1.5 ppm Excellent CMRR: 140 dB High Input Impedance Very Low 1/f Noise Differential Signal Output Overload Detection TSSOP-16 Package APPLICATIONS High-Precision Signal Instrumentation Multiplexed Data Acquisition Medical Instrumentation Test and Measurement Equipment Differential or Single-Ended ADC Drivers Strain Gauge Amplifiers Industrial Process Control +15 V VSP PGA281 IN-P A1 VSOP VO-P +5 V IN-N Gain A2 A3 VOCM VO-N VSON ADS1259 ADC DESCRIPTION The PGA281 is a high-precision instrumentation amplifier with a digitally-controllable gain and signalintegrity 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 noise. The PGA281 is optimized to provide an excellent common-mode rejection of greater than 110 dB (G = 1) over a wide frequency range. Superior commonmode and supply rejection supports high-resolution, precise measurement. The 36-V supply capability and wide, high-im...