PGA280 - Zero Drift, HV Programmable Gain Amplifier

The PGA280 is a high-precision instrumentation amplifier with digitally-controllable gain and signal integrity test capability. This device 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 36V supply capability and wide, high-impedance input range comply with requirements for universal signal measurement.

Special circuitry prevents inrush currents from multiplexer (MUX) switching. In addition, the input switch matrix enables easy reconfiguration and system-level diagnostics—overload conditions are indicated.

The configurable general-purpose input/output (GPIO) offers several control and communication features. The SPI can be expanded to communicate with more devices, supporting isolation with only four ISO couplers. The PGA280 is available in a TSSOP-24 package and is specified from –40°C to +105°C.

Products containing the "PGA280" keyword are: PGA280AIPW , PGA280AIPW , PGA280AIPWR , PGA280AIPWR

• WIDE INPUT RANGE: ±15.5V at ±18V SUPPLY
• BINARY GAIN STEPS: 128V/V to 1/8V/V
• ADDITIONAL SCALING FACTOR: 1V/V and 1⅜V/V
• LOW OFFSET VOLTAGE: 3µV at G = 128
• NEAR-ZERO LONG-TERM DRIFT OF OFFSET VOLTAGE
• NEAR-ZERO GAIN DRIFT: 0.5ppm/°C
• EXCELLENT LINEARITY: 1.5ppm
• EXCELLENT CMRR: 140dB
• HIGH INPUT IMPEDANCE
• VERY LOW 1/f NOISE
• DIFFERENTIAL SIGNAL OUTPUT
• OVERLOAD DETECTION
• INPUT CONFIGURATION SWITCH MATRIX
• WIRE BREAK TEST CURRENT
• EXPANDABLE SPI WITH CHECKSUM
• GENERAL-PURPOSE I/O PORT
• TSSOP-24 PACKAGE
• APPLICATIONS
  • HIGH-PRECISION SIGNAL INSTRUMENTATION
  • MULTIPLEXED DATA ACQUISITION
  • HIGH-VOLTAGE ANALOG INPUT AMPLIFIER
  • UNIVERSAL INDUSTRIAL ANALOG INPUT

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