Support software
DAC161S997
16-Bit Precision DAC With Internal Reference and 4mA-to-20mA Current Loop Drive
Data sheet
DAC161S997
- 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.
Technical documentation
No results found. Please clear your search and try again.
View all 11 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | DAC161S997 16-Bit SPI-Programmable DAC for 4-20 mA Loops datasheet (Rev. A) | PDF | HTML | 29 Dec 2014 |
| 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 | 27 Jun 2024 | |
| Analog Design Journal | 태양광 애플리케이션에서 확장 가능한 입력 바이패스 스위치로 이상적인 다이 오드 컨트롤러를 사용하는 방법 | PDF | HTML | 27 Jun 2024 | |
| Analog Design Journal | 4mA~20mA 루프 전원 공급 트랜스미터 설계 | PDF | HTML | 26 Jun 2024 | |
| Analog Design Journal | 設計 4mA 至 20mA 迴路供電發送器 | PDF | HTML | 26 Jun 2024 | |
| Analog Design Journal | Designing 4mA to 20mA loop-powered transmitters | PDF | HTML | 28 May 2024 | |
| Analog Design Journal | How to use an ideal diode controller as a scalable input bypass switch in solar applications | PDF | HTML | 28 May 2024 | |
| Application note | A Basic Guide to the HART Protocol | PDF | HTML | 09 Nov 2023 | |
| Circuit design | Loop powered 4- to 20-mA transmitter circuit | 20 Dec 2018 | ||
| Technical article | Powering smart sensor transmitters in industrial applications | PDF | HTML | 02 May 2016 | |
| EVM User's guide | DAC161S997EVM User's Guide (Rev. A) | 29 Feb 2016 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
DAC161S997EVM — DAC161S997 16-Bit DAC With Internal Reference and 4mA-to-20mA Current Loop Drive Evaluation Module
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 (...)
User guide: PDF
Simulation model
DAC161P997 TINA-TI Reference Design
SNAM145.TSC (306 KB) - TINA-TI Reference Design
Calculation tool
ANALOG-ENGINEER-CALC — Analog engineer's calculator
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 operational-amplifier (...)
Simulation tool
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
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 (...)
Simulation tool
TINA-TI — SPICE-based analog simulation program
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 (...)
User guide: PDF
Reference designs
TIDA-00666 — Field Transmitter with BLE Connectivity Powered from 4 to 20-mA Current Loop Reference Design
TIDA-00666 enables Bluetooth Low Energy communication powered from a 2-wire 4- to 20-mA loop. For industrial process control instruments, analog 4- to 20-mA current loops are commonly used for analog signaling, with 4 mA representing the lowest end of the range and 20 mA the highest. This (...)
Reference designs
TIDA-00095 — RTD Temperature Transmitter for 2-wire, 4 to 20-mA Current Loop Systems
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 (...)
Reference designs
TIDA-00483 — Dual Sensor Measurement Using Single Current-Loop with FSK Modulation Reference Design
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 (...)
Reference designs
TIDA-00648 — 4-20mA Current Loop Transmitter Reference Design
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 (...)
Reference designs
TIDA-00165 — Small Form Factor, 2-Wire 4 to 20mA Current Loop RTD Temperature Transmitter Reference Design
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 (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| WQFN (RGH) | 16 | Ultra Librarian |
Ordering & quality
Information included:
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Information included:
- Fab location
- Assembly location
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
TI E2E™ forums with technical support from TI engineers
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.