AD5706R: 4-Channel, 16-Bit, Current Output DAC with On-Chip Reference and SPI
The AD5705R/AD5706R are 4-channel, 12-/16-bit resolution, low noise programmable current output, digital-to-analog converters (DACs). The devices are ideal for applications such as photonics control and current-mode biasing.
The devices feature an integrated 2.5V voltage reference, along with load DAC, A/B toggle, and dither functions. An onboard multiplexer allows for monitoring of supply and output voltages, output currents, and the internal die temperature.
The AD5705R/AD5706R support several programmable output current ranges, with a maximum of 300mA. With addressable pins, up to four devices can share a single SPI bus for communication.
Each DAC channel operates independently with its own positive power supply rail (PVDDx) that can range from 1.65V to 3.6V, optimizing both power efficiency and thermal performance. The devices require a 2.9V to 3.6V AVDD supply and are rated for operation across a wide temperature range from −40°C to +125°C.
Key Features and Benefits
- 4-channel, 12-/16-bit, current output DAC
- Programmable output current ranges per channel 50mA, 150mA, 200mA, and 300mA
- Flexible 1.65V to AVDD (≤3.6V) output supply voltages
- Separate voltage supply per output channel
- 0.3V maximum dropout voltage per channel
- Internal switches to ground on IOUT pins
- 2.5V on-chip voltage reference
- 50MHz SPI interface
- Load DAC, A/B toggle, and dither functions
- Integrated analog diagnostic monitoring
- Integrated thermal warning alert
- 36-ball 2.55mm × 2.55mm WLCSP
- 28-pin 4mm × 4mm LFCSP
- Operating temperature: –40⁰C to +125⁰C
Applications
- Photonics control
- Optical communications
- LED driver programmable current source
- Current-mode biasing
| Evaluation Board |
| The AD5706R can be evaluated with the EVAL-AD5706R. |
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