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AD5432:  High Bandwidth CMOS 10-Bit Serial Interface Multiplying D/A Converter

The AD5426/AD5432/AD5443 are CMOS 8-, 10- and 12-bit Current Output digital-to-analog converters respectively.

These devices operate from a +2.5 V to 5.5 V power supply, making them suited to battery powered applications and many other applications.

These DACs utilize double buffered 3-wire serial interface that is compatible with SPI™ , QSPI™ , MICROWIRE™ and most DSP interface ...More

AD5432:  High Bandwidth CMOS 10-Bit Serial Interface Multiplying D/A Converter

Product Description

The AD5426/AD5432/AD5443 are CMOS 8-, 10- and 12-bit Current Output digital-to-analog converters respectively.

These devices operate from a +2.5 V to 5.5 V power supply, making them suited to battery powered applications and many other applications.

These DACs utilize 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 zeros and the DAC outputs are at zero scale. As a result of manufacture on a CMOS sub micron process, they offer excellent four quadrant multiplication characteristics, with large signal multiplying bandwidths of 10 MHz.

RESOURCES & TOOLS

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  • +2.5 V to +5.5 V Supply Operation
  • 50 MHz Serial Interface
  • 10 MHz Multiplying Bandwidth
  • ±10 V Reference Input
  • 10-Lead µSOIC Package
  • Pin Compatible 8- (AD5426), 10- (AD5432) and 12-Bit (AD5443) Current Output DACs
  • Guaranteed Monotonic
  • Four Quadrant Multiplication
  • Power On Reset
  • Daisy Chain Mode
  • Readback Function
  • 5 µA Typical Power Consumption
  • Resolution (Bits): 10bit
  • DAC Update Rate: 2.47MSPS
  • DAC Settling Time: 55ns
  • # DAC Outputs: 1
  • DAC Type: Current Out
  • DAC Input Format: Ser,SPI
  • Output FSR: (-Vref),(Bip Vref),(Uni Vref),User Def. Range/Offset
  • Ref Int/Ext: Ext
  • Supply Vnom: Single(+3.3),Single(+5)
  • Pwr Diss: 25µW
  • Package: SOP

Functional Block Diagram for AD5432

Circuits from the Lab

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Part# Bits Update Rate Settling Time # Outputs
AD9740 10 210MSPS 11ns 1
AD5432 10 2.47MSPS 55ns 1