Single-Wire 16-bit DAC from National Semiconductor

Click for larger image
National Semiconductor Corp.

The DAC161P997 from National Semiconductor Corp., Santa Clara, CA, is a 16-bit delta-sigma DAC with a single-wire interface and 4–20 mA current-loop drive that simplifies the design of smart transmitters used in industrial 2-wire sensor systems. Temperature coefficient is 29 ppm, long-term output current drift is 90 ppm, supply current is <190 µA, and operating temperature range is –40°C to 125°C. The loop drive interfaces to a HART modulator, allowing injection of FSK-modulated digital data into the 4–20 mA current loop. Features include user-programmable start-up conditions and data-rate auto-detect as well as error detection and reporting.

Contact Info

Company: National Semiconductor Corp.
Country: United States (USA)
Phone number: 800-272-9959

Suggested Articles

Plans include combining temperature readings with information related to cough sounds in an app.

Impact of WFH will be short-lived for purchases of PCs and tablets, IDC analyst believes

Critics also bemoan recent FAA decision to allow Boeing to re-certify 737 MAX