DAC8741H
- HART-compliant physical layer modem
- 1200-Hz, 2200-Hz HART FSK sinusoids
- Register programmable amplitude of TX signals (DAC8741H only)
- Integrated RX demodulator and band-pass filter with minimal external components
- FOUNDATION Fieldbus compatible H1 controller and medium attachment unit (MAU)
- 31.25 kbit/s communication based on Manchester-coded bus powered (MBP)
- Integrated Manchester encoder and decoder
- Compatible with PROFIBUS PA
- Low quiescent current: 180 µA max at typical industrial operating temperature range (–40°C to +85°C)
- Integrated 1.5-V reference
- Flexible clocking options
- Internal oscillator
- External crystal oscillator
- External CMOS clock
- Digital interface
- DAC8740H: UART
- DAC8741H: SPI
- Reliability: CRC bit error checking, watchdog timer (DAC8741H only)
- Wide operating temperature: –55°C to +125°C
- 4-mm × 4-mm QFN package
The DAC8740H and DAC8741H (DAC874xH) are HART®, FOUNDATION Fieldbus™, and PROFIBUS PA compatible low-power modems designed for industrial process control and industrial-automation applications.
In HART mode, the DAC874xH integrates all of the required circuitry to operate as half-duplex HART physical layer modems, in either slave or master configurations with minimal external components for filtering. In FOUNDATION Fieldbus mode, the DAC874xH integrates all of the required circuitry to operate as half-duplex FOUNDATION Fieldbus compatible H1 controllers and MAUs.
The HART, FOUNDATION Fieldbus, or PROFIBUS PA, data stream can be transferred from the microcontroller through either a UART interface or an integrated FIFO accessed by a SPI interface. The SPI interface includes an SDO pin for daisy-chain support, various interrupts, and other extended features.
기술 자료
| 유형 | 직함 | 날짜 | ||
|---|---|---|---|---|
| * | Data sheet | DAC874xH HART® and FOUNDATION Fieldbus™ and PROFIBUS PA Modems datasheet (Rev. D) | PDF | HTML | 2019/05/02 |
| Application note | Design and Test of a HART-Enabled Field Transmitter for 4-20mA Loops | PDF | HTML | 2024/10/17 | |
| Application note | A Basic Guide to the HART Protocol | PDF | HTML | 2023/11/09 | |
| Application brief | Designing Foundation Fieldbus and Profibus PA Devices with the DAC874xh Modem Fa | 2019/03/04 | ||
| Application brief | Implementing HART in PLC Analog Input Modules for Real-Time Communication | 2018/11/05 | ||
| Application brief | Implementing HART in 2-Wire Field Sensor-Transmitters | 2018/10/03 | ||
| EVM User's guide | DAC8742H Evaluation Module User's Guide (Rev. A) | 2017/11/14 |
설계 및 개발
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DAC8742HEVM — DAC8742H 평가 모듈
The DAC8742H evaluation module (EVM) is an easy-to-use platform for evaluating the functionality and performance of the DAC8742H device. The DAC8740H, DAC8741H, and DAC8742H are HART®, FOUNDATION Fieldbus™, and PROFIBUS PA-compliant low-power modems designed for industrial (...)
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TI 설계 및 시뮬레이션 환경용 PSpice는 기본 제공 라이브러리를 이용해 복잡한 혼합 신호 설계를 시뮬레이션할 수 있습니다. 레이아웃 및 제작에 (...)
TINA-TI — SPICE 기반 아날로그 시뮬레이션 프로그램
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| VQFN (RGE) | 24 | Ultra Librarian |
주문 및 품질
- RoHS
- REACH
- 디바이스 마킹
- 납 마감/볼 재질
- MSL 등급/피크 리플로우
- MTBF/FIT 예측
- 물질 성분
- 인증 요약
- 지속적인 신뢰성 모니터링
- 팹 위치
- 조립 위치
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.