Analog Devices AD5425 Product Info

The AD5425 is a CMOS, 8-bit current output digital-to-analog converter (DAC), 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 4-quadrant multiplication characteristics, with large signal multiplying bandwidths of 10 MHz.

The applied external reference input voltage (V_REF) determines the full-scale output current. An integrated feedback resistor, R_FB, provides temperature tracking and full-scale voltage output when combined with an external I to V precision amplifier.

The AD5425 is available in a small, 10-lead MSOP package.

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