DAC161P997 - 用于 4-20mA 环路的单线 16 位 DAC

DAC161P997是TI德州仪器公司的一款电流输出为4至20mA的精密DAC产品，DAC161P997是用于 4-20mA 环路的单线 16 位 DAC，本站介绍了DAC161P997的封装应用图解、特点和优点、功能等，并给出了与DAC161P997相关的TI元器件型号供参考。

DAC161P997 - 用于 4-20mA 环路的单线 16 位 DAC - 电流输出为4至20mA的精密DAC - 数模转换器 - 德州仪器

产品特性

16-Bit Linearity
Single-Wire Interface (SWIF), with Handshake
Digital Data Transmission (No Loss of Fidelity)
Pin Programmable Power-Up Condition
Self Adjusting to Input Data Rate
Loop Error Detection and Rreporting
Programmable Output Current Error Level
No External Precision Components
Simple Interface to HART Modulator
Small Package: WQFN-16 (4 x 4 mm, 0.5 mm Pitch)
Key Specifications
- Output Current TempCo: 29 ppmFS/°C (Max)
- Long-Term Output Current Drift: 90 ppmFS (Typ)
- INL: 3.3/−2.1 µA(Max)
- Total Supply Current: 190 µA (Max)

2 Application

Two-Wire, 4-20 mA Current Loop Transmitter
Industrial Process Control
Actuator Control
Factory Automation
Building Automation
Precision Instruments
Data Acquisition Systems
Test Systems

产品说明

The DAC161P997 is a 16-bit ∑Δ digital-to-analog converter (DAC) for transmitting an analog output current over an industry standard 4-20 mA current loop. It offers 16-bit accuracy with a low output current temperature coefficient (29 ppm/°C) and excellent long-term output current drift (90 ppmFS) while consuming less than 190 µA.

The data link to the DAC161P997 is a Single Wire Interface (SWIF) which allows sensor data to be transferred in digital format over an isolation boundary using a single isolation component. The DAC161P997’s digital input is compatible with standard isolation transformers and opto-couplers. Error detection and handshaking features within the SWIF protocol ensure error free communication across the isolation boundary. For applications where isolation is not required, the DAC161P997 interfaces directly to a microcontroller.

The loop drive of the DAC161P997 interfaces to a HART (Highway Addressable Remote Transducer) modulator, allowing injection of FSK modulated digital data into the 4-20 mA current loop. This combination of specifications and features makes the DAC161P997 ideal for 2- and 4-wire industrial transmitters.

The DAC161P997 is available in a 16–lead WQFN package and is specified over the extended industrial temperature range of -40°C to 105°C.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
DAC161P997	WQFN (16)	4.00 mm x 4.00 mm

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