●The DAC161P997 is a 16-bit ΣΔ 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 DAC161P997s 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.
● 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 × 4 mm, 0.5 mm Pitch)
● Key
● 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)
●## 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
●All trademarks are the property of their respective owners.
Part 3D Model
