AFE78201
- Functional Safety-Capable
- Low quiescent current: 170µA (typical), 210µA (maximum)
- 16-bit or 14-bit monotonic high-performance DAC
- DAC output range: 0V to 2.5V
- Digital DAC slew-rate control
- 4LSB INL at 16 bits
- 0.07% FSR (max) TUE from –40°C to +125°C
- 12-bit 3.84kSPS ADC for advanced diagnostics
- Integrated 1.25V reference at 10ppm/°C (max)
- Internal 1.2288MHz oscillator with clock output
- Digital interfaces:
- Serial peripheral interface (SPI)
- Universal asynchronous receiver-transmitter (UART)
- Fault detection: CRC bit error checking, windowed watchdog timer, diagnostic ADC
- Wide operating temperature: –55°C to +125°C
The 16-bit AFE88201 and 14-bit AFE78201 (AFEx8201) are highly-integrated, high-accuracy, extremely low-power digital-to-analog converters (DACs) with voltage outputs designed for process-control and industrial-automation applications.
The AFEx8201 devices include most of the components required to design a 4mA to 20mA, 3‑wire or 4-wire sensor transmitter or analog output module. In addition to the highly accurate DAC, the AFEx8201 incorporate a 10ppm/°C voltage reference and diagnostic analog-to-digital converter (ADC). To accommodate intrinsic and functional-safety concerns, external voltage-to-current conversion and power-regulation are required.
The internal diagnostic ADC is multiplexed to several internal nodes that enable an automatic self-health check. This check is capable of detecting errors or malfunctions of the internal bias sources, power regulator, voltage reference, DAC output, die temperature, and optional external voltage source. If any fault is detected from the diagnostic ADC, CRC frame-error checking, or windowed watchdog timer, the devices can optionally issue an interrupt, enter a user-specified fail-safe state, or both.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | AFEx8201 16-Bit and 14-Bit Digital-to-Analog Converters (DACs) With Voltage Reference and Diagnostic ADC for Low-Power Applications datasheet (Rev. A) | PDF | HTML | 2024. 6. 28 | |
| 애플리케이션 노트 | A Simple, Java-Based CRC Calculator | PDF | HTML | 2026. 3. 4 | ||
| 기능 안전 정보 | AFE78201 and AFE88201 FS FIT Rate FMD and Pin FMA (Rev. A) | PDF | HTML | 2024. 8. 14 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
AFE882H1EVM — AFE882H1 16비트, 전압 출력, 정밀 DAC 및 16비트 ADC용 평가 모듈
AFE882H1EVM 평가 모듈(EVM)은 HART 지원 센서 트랜스미터 애플리케이션과 아날로그 출력 모듈용으로 설계된 전압 출력부를 갖춘 고집적, 고정확도, 저전력, 16비트 디지털-아날로그 컨버터(DAC)인 AFE882H1 평가용 플랫폼입니다. 또한 이 장치는고급 진단을 위한 CRC 오류 감지 기능 및 12비트 1kSPS ADC를 갖추고 있습니다.
ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| UQFN (RRU) | 24 | Ultra Librarian |