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數據轉換器
數位轉類比轉換器 (DAC)
精密 DAC (≤10 MSPS)

AFE882H1

現行

適用於 PLC 和感測器發射器應用且具備 HART®、16 位元 DAC、12 位元 ADC 的低功耗 AFE

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產品規格表

AFE882H1

現行
產品規格表 立即訂購

產品詳細資料

Resolution (Bits) 16 Number of DAC channels 1 Interface type SPI Output type Voltage Output voltage range (V) 0 to 2.5 INL (max) (±LSB) 4 Reference type INT/EXT Architecture STRING Rating Catalog Features 4-20mA loop transmitter, HART, HART Modem Power consumption (typ) (mW) 0.561 Operating temperature range (°C) -55 to 125 Product type Special-function DAC ADC resolution (bps) 12 DAC resolution (bps) 16 Number of GPIOs 7
Resolution (Bits) 16 Number of DAC channels 1 Interface type SPI Output type Voltage Output voltage range (V) 0 to 2.5 INL (max) (±LSB) 4 Reference type INT/EXT Architecture STRING Rating Catalog Features 4-20mA loop transmitter, HART, HART Modem Power consumption (typ) (mW) 0.561 Operating temperature range (°C) -55 to 125 Product type Special-function DAC ADC resolution (bps) 12 DAC resolution (bps) 16 Number of GPIOs 7
UQFN (RRU) 24 16 mm² (4 mm × 4 mm)
  • Functional Safety-Capable
  • Low quiescent current: 180 µA (typical)
  • HART-compliant physical layer modem
    • Programmable amplitude of TX signals
    • RX demodulator and band-pass filter
  • 16-bit or 14-bit monotonic high-performance DAC
    • DAC output range: 0 V to 2.5 V
    • Digital DAC slew-rate control
    • 4-LSB INL at 16 bits
    • 0.07% FSR (max) TUE from –40°C to +125°C
  • 12-bit 3.84-kSPS ADC for advanced diagnostics
  • Integrated 1.25-V reference at 10 ppm/°C (max)
  • Internal 1.2288-MHz oscillator with clock output
  • Digital interface
    • Serial peripheral interface (SPI): Shared bus for both DAC and HART
    • Universal asynchronous receiver-transmitter (UART): Shared bus for both DAC and HART
    • Both: SPI for DAC and UART for HART
  • Fault detection: CRC bit error checking, windowed watchdog timer, diagnostic ADC
  • Wide operating temperature: –55°C to +125°C
  • Functional Safety-Capable
  • Low quiescent current: 180 µA (typical)
  • HART-compliant physical layer modem
    • Programmable amplitude of TX signals
    • RX demodulator and band-pass filter
  • 16-bit or 14-bit monotonic high-performance DAC
    • DAC output range: 0 V to 2.5 V
    • Digital DAC slew-rate control
    • 4-LSB INL at 16 bits
    • 0.07% FSR (max) TUE from –40°C to +125°C
  • 12-bit 3.84-kSPS ADC for advanced diagnostics
  • Integrated 1.25-V reference at 10 ppm/°C (max)
  • Internal 1.2288-MHz oscillator with clock output
  • Digital interface
    • Serial peripheral interface (SPI): Shared bus for both DAC and HART
    • Universal asynchronous receiver-transmitter (UART): Shared bus for both DAC and HART
    • Both: SPI for DAC and UART for HART
  • Fault detection: CRC bit error checking, windowed watchdog timer, diagnostic ADC
  • Wide operating temperature: –55°C to +125°C

The 16-bit AFE882H1 and 14-bit AFE782H1 (AFEx82H1) are highly-integrated, high-accuracy, extremely low-power DACs with voltage-outputs designed for HART-enabled process control and industrial automation applications.

The AFEx82H1 devices include most of the components required to design a 4‑mA to 20‑mA, 3‑wire or 4-wire sensor transmitter or analog output module. In addition to the highly accurate DAC, these devices include a HART®-compliant FSK modem, 10-ppm/°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.

The 16-bit AFE882H1 and 14-bit AFE782H1 (AFEx82H1) are highly-integrated, high-accuracy, extremely low-power DACs with voltage-outputs designed for HART-enabled process control and industrial automation applications.

The AFEx82H1 devices include most of the components required to design a 4‑mA to 20‑mA, 3‑wire or 4-wire sensor transmitter or analog output module. In addition to the highly accurate DAC, these devices include a HART®-compliant FSK modem, 10-ppm/°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.
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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 AFEx82H1 16-Bit and 14-Bit, Low-Power Digital-to-Analog Converters (DACs) With Internal HART® Modem, Voltage Reference, and Diagnostic ADC for Process Control datasheet PDF | HTML 2023/12/13
應用說明 A Simple, Java-Based CRC Calculator PDF | HTML 2026/3/4
應用說明 HART-Enabled Transmitter Based on an Evaluation Module Design PDF | HTML 2025/3/26
應用說明 Design and Test of a HART-Enabled Field Transmitter for 4-20mA Loops PDF | HTML 2024/10/17
應用說明 A Basic Guide to the HART Protocol PDF | HTML 2023/11/9
證書 AFE882H1EVM EU RoHS Declaration of Conformity (DoC) 2023/2/2

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

AFE882H1EVM — 適用於 16 位元、電壓輸出、精密 DAC 和 16 位元 ADC 的 AFE882H1 評估模組

AFE882H1EVM 評估模組 (EVM) 是評估 AFE882H1 產品的平台，此裝置為高度整合、高準確度、低功耗的 16 位元數位轉類比轉換器 (DAC) 器，且具專為啟用 HART 的感測器發射器應用及類比輸出模組所設計的電壓輸出。此裝置也配備 CRC 故障偵測和 12 位元 1-kSPS ADC，適用於進階診斷。

使用指南: PDF | HTML
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開發板

AFE88XH1-FELC-EVM — AFE88xH1 前端迴路電流 (FELC) 評估模組

AFE88XH1-FELC 評估模組 (EVM) 實作 4-20mA 介面，適用於 2 線迴路供電感測器。此 EVM 可在具有 1.8V 訊號鏈的低功耗、應用類環境中評估 AFE881H1 和 AFE882H1。AFE881H1 和 AFE882H1 整合了高精密度 16 位元 DAC 和 HART® 數據機。

使用指南: PDF | HTML
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設計工具

ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.

The ADC-TO-VREF-SELECT tool enables the pairing of TI analog-to-digital converters (ADCs) and series voltage references. Users can select an ADC device and the desired reference voltage, and the tool will list up to two voltage reference recommendations.
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參考設計

TIDA-010982 — 現場傳送器平台，4mA 至 20mA 迴路供電介面參考設計

此參考設計提供 2 線迴路供電感測器的 4-20mA 介面實作範例。此設計可在具有 1.8V 訊號鏈的低功耗應用類環境中評估 AFE881H1 和 AFE882H1。AFE881H1 和 AFE882H1 整合了高精密度 16 位元數位轉類比轉換器 (DAC) 和 HART® 數據機。此參考設計在針腳接頭上提供序列週邊介面 (SPI) 和通用非同步接收器發射器 (UART) 介面，以連接至微控制器 (MCU)。此針腳接頭提供 3.3V 與 1.8V 電源供 MCU 使用，並具備 1.25V 參考電壓供類比轉數位轉換器 (ADC) 使用。
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UQFN (RRU) 24 Ultra Librarian
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