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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 Features Integrated Temp Sensor Reference type INT/EXT Architecture STRING Rating Catalog Power consumption (typ) (mW) 0.342 Operating temperature range (°C) -55 to 125
Resolution (Bits) 16 Number of DAC channels 1 Interface type SPI Output type Voltage Features Integrated Temp Sensor Reference type INT/EXT Architecture STRING Rating Catalog Power consumption (typ) (mW) 0.342 Operating temperature range (°C) -55 to 125
UQFN (RRU) 24 16 mm² 4 x 4
  • 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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類型 標題 日期
* Data sheet 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年 12月 20日
Application brief Ultra-Low-Power, Low-Voltage, 2-Wire, 4- to 20-mA Loop Transmitter Using AFE881H PDF | HTML 2023年 3月 3日
Functional safety information AFE88101 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 2022年 8月 22日

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) 器，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.
支援產品和硬體

支援產品和硬體

產品
Integrated precision ADCs & DACs
AFE88101 — Single-channel low-power 16-bit DAC for sensor and field transmitter applications
精密 DAC (≤10 MSPS)
AFE78101 — 適用感測器發射器的單通道 14 位元電壓類比前端 (AFE) AFE781H1 — 適用感測器發射器且具 DAC ， ADC 和 HART® 數據機的 14 位元低功耗類比前端 (AFE) AFE88101 — 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 AFE881H1 — 適用感測器發射器的 16 位元低功耗類比前端 (AFE)，搭配 DAC、ADC 和 HART® 數據機
硬體開發
AFE881H1EVM — AFE881H1 evaluation module for single-channel, low-power, 16- and 14-bit DACs with HART®
下載
計算工具

ANALOG-ENGINEER-CALC — 類比工程師計算機

The Analog Engineer’s Calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting op-amp gain with feedback (...)
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模擬工具

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
要求
模擬工具

TINA-TI — 基於 SPICE 的類比模擬程式

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
使用指南: PDF
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UQFN (RRU) 24 檢視選項
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