Packaging information
| Package | Pins TSSOP (PW) | 24 |
| Operating temperature range (°C) -40 to 125 |
| Package qty | Carrier 2,000 | LARGE T&R |
Features for the PGA280
- Wide input range: ±15.5 V at ±18-V supply
- Binary gain steps: 128V/V to 1/8 V/V
- Additional scaling factor: 1 V/V and 1⅜ V/V
- Low offset voltage: 3 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
- Input configuration switch matrix
- Wire break test current
- Expandable SPI™ with checksum
- General-purpose I/O port
- TSSOP-24 package
Description for the PGA280
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 36-V 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. For all available packages, see the package option addendum at the end of the data sheet.