12-bit, 8-channel DAC targets multi-channel, high-density applications
11/29/2010 10:09 AM EST
Texas Instruments Inc. recently introduced a 12-bit, 8-channel digital-to-analog converter (DAC) with I2C interface for multi-channel, high-density applications, such as power amplifier control in wireless base stations, portable instrumentation, data acquisition systems and laser bias control.
The DAC7678 is the first 8-channel DAC from TI with a 2-wire I2C interface, which simplifies layout and minimizes design time. The DAC7678 includes integrated output buffer amplifiers and 2.5-V internal reference, and it can be configured to reset to zero or mid-scale.
- High channel count integration, I2C interface, and integrated precision reference simplify layout and minimize design time for high-density applications, while a 24-pin, 4-mm x 4-mm QFN package saves board space, making it suitable for portable applications.
- Integrated precision reference with low drift, ± 5 mV initial accuracy and 20-mA sink/source capability eliminates the need for external reference, saving board space and cost.
- Low-power performance of 0.13 mA/channel at 5 V allows designers to achieve high accuracy of ±1 LSB maximum INL, settling time of 7 µs and ultra-low glitch of 0.15 nV-s.
- Fully characterized over a wide temperature range of -40ºC to 125ºC for use in industrial applications.
Availability and pricing:
The DAC7678 is available now in a 4-mm x 4-mm QFN-24 or a 5-mm x 6-mm TSSOP-16 package. Suggested resale pricing starts at $6.00 for 1,000-unit quantities. 8-bit (DAC5578), 10-bit (DAC6578) and 12-bit (DAC7578) versions without an integrated precision reference are also available. Suggested resale pricing starts $3.00, $3.90, $5.50, respectively, in 1,000-unit quantities.
Datasheet: Click here.