Texas Instruments DAC161P997CISQX/NOPB

The DAC161P997CISQX/NOPB, produced by Texas Instruments, is a 16-bit ΣΔ digital-to-analog converter (DAC) designed for transmitting an analog output current over an industry standard 4-20 mA current loop. This device offers high accuracy with a low output current temperature coefficient of 29 ppm/°C and excellent long-term output current drift of 90 ppmFS, all while consuming less than 190 µA. It is particularly suited for industrial applications requiring precise and stable current loop transmission.

• Single-Wire Interface (SWIF): Allows sensor data to be transferred in digital format over an isolation boundary using a single isolation component, with error detection and handshaking features for error-free communication.
• Compatibility with Isolation Components: Compatible with standard isolation transformers and opto-couplers, and can interface directly to a microcontroller when isolation is not required.
• HART Modulator Compatibility: Interfaces with a HART modulator, enabling the injection of FSK modulated digital data into the 4-20 mA current loop.
• Low Power Consumption: Consumes less than 190 µA, making it energy-efficient.
• Precision and Stability: Offers 16-bit accuracy, low output current temperature coefficient, and excellent long-term output current drift.
• Programmable Output Current Error Level: Allows for setting the output current level at power-up.
• Loop Error Detection and Reporting: Features loop error detection and reporting capabilities.

• Two-Wire, 4-20 mA Current Loop Transmitter: Ideal for industrial transmitters.
• Industrial Process Control: Suitable for precise control in industrial processes.
• Actuator Control: Used in controlling actuators in various industrial settings.
• Factory Automation: Enhances automation in factory environments.
• Building Automation: Used in building automation systems for precise control.
• Precision Instruments: Utilized in precision instruments requiring stable and accurate current output.
• Data Acquisition Systems: Employed in data acquisition systems for accurate data transmission.
• Test Systems: Used in test systems that require precise and stable current loops.

1. What is the resolution of the DAC161P997?

   The DAC161P997 has a resolution of 16 bits.

2. What is the output current temperature coefficient of the DAC161P997?

   The output current temperature coefficient is 29 ppm/°C.

3. How much power does the DAC161P997 consume?

   The DAC161P997 consumes less than 190 µA.

4. What interface does the DAC161P997 use for data transmission?

   The DAC161P997 uses a Single Wire Interface (SWIF) for data transmission.

5. Is the DAC161P997 compatible with HART modulators?

   Yes, the DAC161P997 is compatible with HART modulators, allowing the injection of FSK modulated digital data into the 4-20 mA current loop.

6. What is the operating temperature range of the DAC161P997?

   The operating temperature range is from -40°C to 105°C.

7. In what package is the DAC161P997 available?

   The DAC161P997 is available in a 16-lead WQFN package.

8. Can the DAC161P997 be used without isolation components?

   Yes, the DAC161P997 can interface directly to a microcontroller when isolation is not required.

9. What are some common applications of the DAC161P997?

   Common applications include two-wire, 4-20 mA current loop transmitters, industrial process control, actuator control, factory automation, and precision instruments.

10. Does the DAC161P997 have error detection and reporting features?

    Yes, the DAC161P997 features loop error detection and reporting capabilities.