The AD5425 is a CMOS 8-bit current output digital-to-analog converter, which operates from a +2.5 V to 5.5 V power supply, making it suited to battery powered applications and many other applications.
This DAC utilizes a double buffered 3-wire serial interface that is compatible with SPI™, QSPI™, MICROWIRE™ and most DSP interface standards. An LDAC pin is also provided, which allows simultaneous updates in a multi-DAC configuration. On power-up, the internal shift register and latches are filled with 0s and the DAC outputs are 0 V.
As a result of processing on a CMOS sub micron process, this DAC offers excellent four quadrant multiplication characteristics, with large signal multiplying bandwidths of 10 MHz.
The applied external reference input voltage (VREF) determines the full-scale output current. An integrated feedback resistor, RFB, provides temperature tracking and full-scale voltage output when combined with an external I-to-V precision amplifier.
- Dual channel DAC
- Guaranteed monotonic 12-bit resolution
- 10MHz multiplying bandwidth
- On-chip 4-quadrant resistors allow flexible output ranges
- INL of ±1 LSB
- 24-lead TSSOP package
- 2.5 V to 5.5 V supply operation
- ±10 V reference input
- 50 MHz serial interface
- 2.47 MSPS update rate
- Extended temperature range: -40°C to 125°C
- 4-quadrant multiplication
- Power-on reset
- Daisy-chain mode
- Readback function
- Applications
- Portable battery-powered applications
- Waveform generators
- Analog processing
- Instrumentation applications
- Programmable amplifiers and attenuators
- Digitally controlled calibration
- Programmable filters and oscillators
- Composite video
- Ultrasound
- Gain, offset, and voltage trimming
