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精密 DAC (≤10 MSPS)

AFE882H1

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AFE882H1

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产品详情

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: 180µA (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
    • 1.8V supply: output range 0V to 1.25V
    • 5V supply: 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 3.84-kSPS ADC for advanced diagnostics
  • Integrated 1.25V reference at 10ppm/°C (max)
  • Internal 1.2288MHz 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: 180µA (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
    • 1.8V supply: output range 0V to 1.25V
    • 5V supply: 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 3.84-kSPS ADC for advanced diagnostics
  • Integrated 1.25V reference at 10ppm/°C (max)
  • Internal 1.2288MHz 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, 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.

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, 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.
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技术文档

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顶层文档 类型 标题 格式选项 下载最新的英语版本 日期
* 数据表 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 数据表 (Rev. A) PDF | HTML 2026-9-2
应用手册 一款基于浏览器的简单 CRC 计算器 PDF | HTML PDF | HTML 2026-3-16
应用手册 基于评估模块设计且支持 HART 的变送器 PDF | HTML 英语版 PDF | HTML 2025-4-4
应用手册 适用于 4-20mA 环路且支持 HART 的现场变送器的设计和测试 PDF | HTML 英语版 PDF | HTML 2024-10-18
应用手册 HART 协议基本指南 PDF | HTML 英语版 PDF | HTML 2023-11-10
证书 AFE882H1EVM EU RoHS Declaration of Conformity (DoC) 2023-2-2

设计与开发

如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。

评估板

AFE882H1EVM — AFE882H1 16 位电压输出精密 DAC 和 16 位 ADC 评估模块

AFE882H1EVM 评估模块 (EVM) 是一个用于评估 AFE882H1 产品的平台，后者是一款具有电压输出、适用于支持 HART 的传感器变送器应用和模拟输出模块的高度集成、高精度、低功耗、16 位数模转换器 (DAC)。该器件还具有 CRC 故障检测和用于高级诊断的 12 位 1kSPS ADC。

用户指南: PDF | HTML
支持的产品和硬件
有库存
限制：
??asset.out-of-stock-ti_zh_CN??
无货
评估板

AFE88XH1-FELC-EVM — AFE88xH1 前端环路电流 (FELC) 评估模块

AFE88XH1-FELC 评估模块 (EVM) 实现了用于 2 线回路供电式传感器的 4–20mA 接口。此设计支持在采用 1.8V 信号链的低功耗应用类环境中评估 AFE881H1 和 AFE882H1。AFE881H1 和 AFE882H1 集成了高精度 16 位 DAC 和 HART® 调制解调器。

用户指南: PDF | HTML
支持的产品和硬件
有库存
限制：
??asset.out-of-stock-ti_zh_CN??
无货
设计工具

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.
支持的产品和硬件
参考设计

TIDA-010982 — 现场变送器平台、4mA 至 20mA 环路供电接口参考设计

此参考设计提供了用于 2 线环路供电式传感器的 4–20mA 接口实现示例。此设计支持在采用 1.8V 信号链的低功耗应用类环境中评估 AFE881H1 和 AFE882H1。AFE881H1 和 AFE882H1 集成了高精度 16 位数模转换器 (DAC) 和 HART® 调制解调器。此参考设计在引脚接头上提供串行外设接口 (SPI) 和通用异步接收器-发送器 (UART) 接口，以连接微控制器 (MCU)。此引脚接头提供 3.3V 和 1.8V 电压来为 MCU 供电，并提供 1.25V 基准电压用于模数转换器 (ADC)。
支持的产品和硬件
封装 引脚 CAD 符号、封装和 3D 模型
UQFN (RRU) 24 Ultra Librarian
适用于评估类项目的 TI 标准条款与条件。

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