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

DAC161S997

現行

具內部參考和 4mA 至 20mA 電流迴路驅動的 16 位元精密 DAC

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產品規格表

DAC161S997

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 Buffered Current INL (max) (±LSB) 9 Reference type Ext Architecture Delta-Sigma Rating Catalog Features 4-20mA loop transmitter, Low Power Power consumption (typ) (mW) 0.33 Operating temperature range (°C) -40 to 105 Product type Special-function DAC
Resolution (Bits) 16 Number of DAC channels 1 Interface type SPI Output type Buffered Current INL (max) (±LSB) 9 Reference type Ext Architecture Delta-Sigma Rating Catalog Features 4-20mA loop transmitter, Low Power Power consumption (typ) (mW) 0.33 Operating temperature range (°C) -40 to 105 Product type Special-function DAC
WQFN (RGH) 16 16 mm² 4 x 4
  • 16-Bit Resolution
  • Very-Low Supply Current of 100 µA
  • 5 ppmFS/°C Gain Error
  • Pin-Programmable Power-Up Condition
  • Loop-Error Detection and Reporting
  • Programmable Output-Current Error Levels
  • Simple HART Modulator Interfacing
  • Highly Integrated Feature Set in Small
    Footprint WQFN-16 (4- × 4-mm,
    0.5-mm Pitch)
  • 16-Bit Resolution
  • Very-Low Supply Current of 100 µA
  • 5 ppmFS/°C Gain Error
  • Pin-Programmable Power-Up Condition
  • Loop-Error Detection and Reporting
  • Programmable Output-Current Error Levels
  • Simple HART Modulator Interfacing
  • Highly Integrated Feature Set in Small
    Footprint WQFN-16 (4- × 4-mm,
    0.5-mm Pitch)

The DAC161S997 is a very low power 16-bit ΣΔ digital-to-analog converter (DAC) for transmitting an analog output current over an industry standard 4-20 mA current loop. The DAC161S997 has a simple 4-wire SPI for data transfer and configuration of the DAC functions. To reduce power and component count in compact loop-powered applications, the DAC161S997 contains an internal ultra-low power voltage reference and an internal oscillator. The low power consumption of the DAC161S997 results in additional current being available for the remaining portion of the system. The loop drive of the DAC161S997 interfaces to a Highway Addressable Remote Transducer (HART) modulator, allowing injection of FSK modulated digital data into the 4-20 mA current loop. This combination of specifications and features makes the DAC161S997 ideal for 2- and 4-wire industrial transmitters. The DAC161S997 is available in a 16-pin 4-mm × 4-mm WQFN package and is specified over the extended industrial temperature range of –40°C to +105°C.

The DAC161S997 is a very low power 16-bit ΣΔ digital-to-analog converter (DAC) for transmitting an analog output current over an industry standard 4-20 mA current loop. The DAC161S997 has a simple 4-wire SPI for data transfer and configuration of the DAC functions. To reduce power and component count in compact loop-powered applications, the DAC161S997 contains an internal ultra-low power voltage reference and an internal oscillator. The low power consumption of the DAC161S997 results in additional current being available for the remaining portion of the system. The loop drive of the DAC161S997 interfaces to a Highway Addressable Remote Transducer (HART) modulator, allowing injection of FSK modulated digital data into the 4-20 mA current loop. This combination of specifications and features makes the DAC161S997 ideal for 2- and 4-wire industrial transmitters. The DAC161S997 is available in a 16-pin 4-mm × 4-mm WQFN package and is specified over the extended industrial temperature range of –40°C to +105°C.
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類型 標題 日期
* Data sheet DAC161S997 16-Bit SPI-Programmable DAC for 4-20 mA Loops datasheet (Rev. A) PDF | HTML 2014年 12月 29日
Circuit design Circuit Replacing HART® Modem Device Competitors With the DAC8740H PDF | HTML 2026年 1月 29日
Circuit design Loop-Powered 4mA to 20mA Transmitter Circuit (Rev. A) PDF | HTML 2024年 9月 19日
Analog Design Journal 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 2024年 6月 27日
Analog Design Journal 設計 4mA 至 20mA 迴路供電發送器 PDF | HTML 2024年 6月 26日
Application note A Basic Guide to the HART Protocol PDF | HTML 2023年 11月 9日
Technical article Powering smart sensor transmitters in industrial applications PDF | HTML 2016年 5月 2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

DAC161S997EVM — 具有內部參考和 4mA 至 20mA 電流迴路驅動的 DAC161S997 16 位元 DAC 評估模組

DAC161S997EVM helps evaluate the DAC161S997, 4-20mA Loop driver with SPI interface. This board is designed as a 2-Wire loop-powered transmitter. It has a MSP430G2553 MCU which comes preloaded with a firmware which communicates with PC Software and can read/write DAC register according to the user (...)

使用指南: PDF
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支援軟體

SLAC782 — Source Files for SLAA866

支援產品和硬體

支援產品和硬體

產品
精密 DAC (≤10 MSPS)
  • DAC161S997 — 具內部參考和 4mA 至 20mA 電流迴路驅動的 16 位元精密 DAC
  • DAC7311 — 採用 6 接腳 SC70 封裝且適用電池供電應用的 12 位元單通道超低功耗 DAC
  • DAC8311 — 採用 SC70 封裝的 14 位元、單通道、80uA、2.0V-5.5V DAC
精密運算放大器 (Vos < 1mV)
  • OPA317 — 低偏移軌至軌 I/O 運算放大器
下載
模擬型號

DAC161P997 TINA-TI Reference Design

SNAM145.TSC (306 KB) - TINA-TI Reference Design
下載
模擬型號

DAC161P997 TINA-TI Transient Spice Model

SNAM146.ZIP (19 KB) - TINA-TI Spice Model
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計算工具

ANALOG-ENGINEER-CALC — 類比工程師計算機

類比工程師的計算機旨在加速類比電路設計工程師定期使用的許多重複計算。此基於 PC 的工具提供圖形介面，列出各種常見計算，從使用回饋電阻器設定運算放大器增益到選擇適當的電路設計元件以穩定類比數位轉換器 (ADC) 驅動緩衝電路。

除了作為獨立工具使用外，此計算機還與類比工程師口袋參考中描述的概念相得益彰。

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模擬工具

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

PSpice® for TI 是有助於評估類比電路功能的設計和模擬環境。這款全功能設計和模擬套件使用 Cadence® 的類比分析引擎。PSpice for TI 包括業界最大的模型庫之一，涵蓋我們的類比和電源產品組合，以及特定類比行為模型，且使用無需支付費用。

PSpice for TI 設計和模擬環境可讓您使用其內建函式庫來模擬複雜的混合訊號設計。在進行佈局和製造之前，建立完整的終端設備設計和解決方案原型，進而縮短上市時間並降低開發成本。 

在 PSpice for TI 設計與模擬工具中，您可以搜尋 TI (...)
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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參考設計

TIDA-00666 — 具備 BLE 連線能力且由 4 至 20mA 電流迴路供電的現場傳送器參考設計

TIDA-00666 參考設計實現了透過 2 線制 4-20mA 迴路供電的藍牙低功耗通訊。在工業製程控制儀器中，類比 4-20mA 電流迴路是常用的訊號傳輸方式，其中 4mA 代表量程下限，20mA 則代表量程上限。此參考設計可測量濕度與溫度，並透過藍牙低功耗廣播測量數值。TIDA-00666 採用迴路供電設計，其迴路電流值會根據濕度數值變化（0% 對應 4mA，100% 對應 20mA）。
Design guide: PDF
電路圖: PDF
參考設計

TIDA-00095 — 適用於 2 線、4 至 20-mA 電流迴路系統的 RTD 溫度發射器

This comprehensive design provides a complete system that measures and processes temperature signals  inputs from 2-wire, 3-wire, and 4-wire resistance temperature detectors (RTDs) and outputs a 4 to 20-mA current-loop signal corresponding to the temperature processed from the RTD inputs. It (...)
使用指南: PDF
電路圖: PDF
參考設計

TIDA-00483 — 採用單電流迴路和 FSK 調變的雙路感測器量測參考設計

The TIDA-00483 reference design demonstrates a 4-20mA current loop subsystem capable of measuring the surrounding environment and communicating the temperature, humidity, and ambient light over the loop. The small footprint of the design contains all sensors, filters, and control circuitry to (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-00648 — 4-20mA 電流迴路發送器參考設計

TIDA-00648 is an industry standard 4-20 mA current-loop transmitter. It allows injection of FSK-modulated digital data into the 4-20 mA current loop for HART communication. External protection circuitry is deployed in-place for compliance with regulatory IEC61000-4 standards such as EFT, ESD and (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-00165 — 小體積、2 線 4 至 20mA 電流迴路 RTD 溫度發射器參考設計

This is a reference design for a robust, low power, precise and long-term stable 2-wire loop powered 4 to 20mA current output temperature transmitter. It uses RTD temperature sensor with 4 to 20mA current loop transmitter. It also explains sensor signal conditioning, ratiometric measurement (...)
Design guide: PDF
電路圖: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
WQFN (RGH) 16 Ultra Librarian
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