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
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.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | PGA280 Zerø-Drift, High-Voltage, Programmable Gain Instrumentation Amplifier datasheet (Rev. B) | PDF | HTML | 2020. 4. 8 | |
| 아날로그 디자인 학술지 | Precision signal conditioning for safety-enabled AIMs in factory automation | 2019. 9. 30 | |||
| 애플리케이션 노트 | PGA280 Communication via SPI™ | 2009. 12. 6 |
설계 및 개발
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| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| TSSOP (PW) | 24 | Ultra Librarian |