Zero-Drift, High Voltage Programmable Gain Amplifier - PGA281

PGA281 (ACTIVE)

Zero-Drift, High Voltage Programmable Gain Amplifier

Description

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 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 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 (ADCs).

The PGA281 is available in a TSSOP-16 package and is specified over a temperature range of –40°C to +105°C.

Features

  • Wide Input Range: ±15.5 V at ±18 V Supply
  • Binary Gain Steps: 128 V/V to 1/8 V/V
  • Additional Scaling Factor: 1 V/V and 1 3/8 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

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Parametrics Compare all products in Programmable Gain Amplifier

 
Number of Channels (#)
Gain (V/V)
Pin/Package
Operating Temperature Range (C)
Rating
Approx. Price (US$)
PGA281 PGA280
1     4    
1/8,1/4, 1/2, 1, 2, 4, 8, 16, 32, 64, 128     1/8, 1/4, 1/2, 1, 2, 4, 8, 16, 32, 64, 128    
16TSSOP     24TSSOP    
-40 to 125     -40 to 125    
Catalog     Catalog    
2.55 | 1ku     2.90 | 1ku    

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