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

AFE88101

現行

適用於感測器和現場發射器應用的單通道低功耗 16 位元 DAC

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產品規格表

AFE88101

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) 0.15 to 1.25, 0.2 to 1.0, 0.3 to 2.5, 0.4 to 2.0 INL (max) (±LSB) 4 Reference type INT/EXT Architecture STRING Rating Catalog Features Integrated Temp Sensor Power consumption (typ) (mW) 0.342 Operating temperature range (°C) -55 to 125 Product type Special-function DAC ADC resolution (bps) 12 DAC resolution (bps) 16
Resolution (Bits) 16 Number of DAC channels 1 Interface type SPI Output type Voltage Output voltage range (V) 0.15 to 1.25, 0.2 to 1.0, 0.3 to 2.5, 0.4 to 2.0 INL (max) (±LSB) 4 Reference type INT/EXT Architecture STRING Rating Catalog Features Integrated Temp Sensor Power consumption (typ) (mW) 0.342 Operating temperature range (°C) -55 to 125 Product type Special-function DAC ADC resolution (bps) 12 DAC resolution (bps) 16
UQFN (RRU) 24 16 mm² (4 mm × 4 mm)
  • Functional Safety-Capable
    • Documentation available to aid functional safety system design: AFE88101, AFE78101
  • Low quiescent current: 170 µA (typ)
  • 16-bit or 14-bit monotonic high-performance DAC
    • 1.8-V supply: 0.15 V to 1.25 V, 0.2 V to 1.0 V
    • 5-V supply: 0.3 V to 2.5 V, 0.4 V to 2.0 V
    • 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
  • Internal 1.2288-MHz 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
  • Functional Safety-Capable
    • Documentation available to aid functional safety system design: AFE88101, AFE78101
  • Low quiescent current: 170 µA (typ)
  • 16-bit or 14-bit monotonic high-performance DAC
    • 1.8-V supply: 0.15 V to 1.25 V, 0.2 V to 1.0 V
    • 5-V supply: 0.3 V to 2.5 V, 0.4 V to 2.0 V
    • 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
  • Internal 1.2288-MHz 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 AFE88101 and 14-bit AFE78101 ( AFEx8101) are highly-integrated, high-accuracy, extremely low-power digital-to-analog converters (DACs) with voltage outputs designed for sensor-transmitter applications.

The AFEx8101 devices include most of the components required to design a 4‑mA to 20‑mA, 2‑wire (loop-powered) sensor transmitter. In addition to the highly accurate DAC, these devices include a 10‑ppm/°C voltage reference and a 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 fail-safe state corresponding to a standard NAMUR output value or user-specified custom value, or both.

These devices operate from supplies as low as 1.71 V with a maximum quiescent current of 210 µA. The devices are specified over the temperature range of –40°C to +125°C, but are functional from –55°C to +125°C.

The 16-bit AFE88101 and 14-bit AFE78101 ( AFEx8101) are highly-integrated, high-accuracy, extremely low-power digital-to-analog converters (DACs) with voltage outputs designed for sensor-transmitter applications.

The AFEx8101 devices include most of the components required to design a 4‑mA to 20‑mA, 2‑wire (loop-powered) sensor transmitter. In addition to the highly accurate DAC, these devices include a 10‑ppm/°C voltage reference and a 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 fail-safe state corresponding to a standard NAMUR output value or user-specified custom value, or both.

These devices operate from supplies as low as 1.71 V with a maximum quiescent current of 210 µA. The devices are specified over the temperature range of –40°C to +125°C, but are functional from –55°C to +125°C.
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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 AFEx8101 16-Bit and 14-Bit, Low-Power DACs With Voltage Reference and Diagnostic ADC for 4-mA to 20-mA Loop-Powered Applications datasheet PDF | HTML 2022/12/20
應用說明 A Simple, Java-Based CRC Calculator PDF | HTML 2026/3/4
類比設計期刊 如何將理想二極體控制器作為太陽能應用 中的可擴展輸入旁路開關使用 PDF | HTML Download English Version PDF | HTML 2024/6/27
類比設計期刊 設計 4mA 至 20mA 迴路供電發送器 PDF | HTML Download English Version PDF | HTML 2024/6/26
Application brief Ultra-Low-Power, Low-Voltage, 2-Wire, 4- to 20-mA Loop Transmitter Using AFE881H PDF | HTML 2023/3/3
功能安全資訊 AFE88101 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 2022/8/22

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

AFE881H1EVM — 適用具 DAC、ADC 和 HART® 數據機的 16 位元低功耗 AFE 之 AFE881H1 評估模組

AFE881H1 評估模組 (EVM) 是評估 AFE881H1 的平台，此裝置為高度整合、高準確度、超低功耗的 16 位元數位轉類比轉換器 (DAC)，且具專為支援 HART® 感測器發射器應用所設計的電壓輸出。

AFE881H1 也配備循環冗餘檢查 (CRC) 故障偵測功能，以及適用進階診斷的 12 位元 1-kSPS 類比轉數位轉換器 (ADC)。

USB2ANY 介面工具 (另售) 將 GUI 與 AFE88H1EVM 結合，使用時必須具備此工具。

使用指南: PDF | HTML
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開發模組 (EVM) 的 GUI

AFE881H1EVM-GUI — AFE881H1EVM GUI installer

The AFE881H1EVM-GUI is a windows-based software GUI that controls the AFE881H1EVM through SPI communications using the USB2ANY interface adapter tool.
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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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UQFN (RRU) 24 Ultra Librarian
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