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DAC161P997CISQ/NOPB 16-Bit Programmable Loop-Powered 4-20mA DAC High-Accuracy Low-Power Digital Calibration HART Compatible Robust ±40V Fault Protection Industrial Automation Solution
Features
16-Bit Linearity
Single-Wire Interface (SWlF), 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 mmPitch)
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)
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
Description
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.lt offers 16-bit accuracy with a low output current temperature coefficient(29ppm/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(SWF)which allows sensor data to be transferred in digital format over an isolation boundary usingja single isolation component. The DAC161P997'S;digital input is compatible with standard isolation transformers and opto-couplers. Error detection and handshaking features within the SWF protocolensure 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 andfeatures makes the DAC161P997idealfor2-and4-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.
INFORMATION
| Category | | |
| Manufacturer | Texas Instruments | |
| Series | - | |
| Packaging | Tape & Reel (TR) Cut Tape (CT) Digi-Reel® | |
| Part Status | Active | |
| Type | DAC | |
| Number of Channels | 1 | |
| Resolution (Bits) | 16 b | |
| Sampling Rate (Per Second) | - | |
| Data Interface | Serial | |
| Voltage Supply Source | Analog and Digital | |
| Voltage - Supply | 2.7V ~ 3.6V | |
| Operating Temperature | -40°C ~ 105°C | |
| Mounting Type | Surface Mount | |
| Package / Case | 16-WFQFN Exposed Pad | |
| Supplier Device Package | 16-WQFN (4x4) | |
| Base Product Number |
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