AD5432 Datasheet

• 2.5 V to 5.5 V supply operation
• 50 MHz serial interface
• 10 MHz multiplying bandwidth
• 2.5 MSPS update rate
• ±10 V reference input
• Low glitch energy < 2 nV-s
• Extended temperature range −40°C to +125°C
• 10-lead MSOP package
• Pin-compatible 8-, 10-, and 12-bit current output DACs
• Guaranteed monotonic
• Four Quadrant Multiplication
• Power-on reset with brownout detection
• Daisy Chain Mode
• Readback Function
• 0.4 μA typical power consumption

• Portable battery-powered applications
• Waveform generators
• Instrumentation
• Programmable amplifiers and attenuators
• Digitally controlled calibration
• Programmable filters and oscillators
• Composite video
• Ultrasound
• Gain, offset, and voltage trimming

The AD5432 are CMOS 8-, 10-, and 12-bit current output digital-to-analog converters (DACs), respectively. These devices operate from a 2.5 V to 5.5 V power supply, making them suitable for battery-powered applications and many other applications.

These DACs use a double buffered, 3-wire serial interface that is compatible with SPI, QSPI^™, MICROWIRE^™, and most DSP interface standards. In addition, a serial data out pin (SDO) allows for daisy-chaining when multiple packages are used. Data readback allows the user to read the contents of the DAC register via the SDO pin. On power-up, the internal shift register and latches are filled with 0s and the DAC outputs are at zero scale.

As a result of manufacturing on a CMOS submicron process, the parts offer 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 current to voltage precision amplifier.

The AD5432 DACs are available in small, 10-lead MSOP packages.