This website uses cookies. By using this site, you consent to the use of cookies. For more information, please take a look at our Privacy Policy.

Images are for reference only,

See Technical Specifications

DAC161P997CISQ/NOPB

Single-Wire 16-bit DAC for 4-20mA Loops

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

DAC161P997CISQ/NOPB
Datasheet:

DAC161P997CISQ/NOPB Datasheet (PDF)
Type:

DAC
Number of Channels:

1
Resolution (Bits):

16 b
Data Interface:

Serial
EDA/CAD Models:

Request Free CAD Models for DAC161P997CISQ/NOPB

Email: [email protected]

Skype: live:.cid.ab6b29428937b76

Tel: +852 95804164

DAC161P997CISQ/NOPB General Description

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.

Key Features

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.

Specifications

Category	Integrated Circuits (ICs)Data AcquisitionADCs/DACs - Special Purpose	Series	-
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	Base Product Number	DAC161P997