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.
技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | 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年 6月 28日 |
Functional safety information | AFE78201 and AFE88201 FS FIT Rate FMD and Pin FMA (Rev. A) | PDF | HTML | 2024年 8月 14日 |
設計與開發
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ANALOG-ENGINEER-CALC — 類比工程師計算機
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
TINA-TI — 基於 SPICE 的類比模擬程式
封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
---|---|---|
UQFN (RRU) | 24 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點