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Description:14 - Bit High Bandwidth Multiplying DACs with Serial Interface
Manufacturer:Analog Devices
Datasheet:PDF (780K).
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The AD5444/AD5446 1 are CMOS 12-bit and 14-bit, current output digital-to-analog converters. Operating from a single 2.5 V to 5.5 V power supply, these devices are suited for batterypowered and other applications. As a result of the CMOS submicron manufacturing process, these parts offer excellent 4-quadrant multiplication characteristics of up to 12 MHz. These DACs use a double-buffered, 3-wire serial interface that is compatible with SPI, QSPITM, MICROWIRETM, and most DSP interface standards. On power-up, the internal shift register and latches are filled with 0s, and the DAC output is at zero scale. The applied external reference input voltage (VREF) determines the full-scale output current. These parts can handle 10 V inputs on the reference despite operating from a single-supply power supply of 2.5 V to 5.5 V. An integrated feedback resistor (RFB) provides temperature tracking and full-scale voltage output when combined with an external current-to-voltage precision amplifier. The AD5444/AD5446 DACs are available in small 10-lead MSOP packages that are pin-compatible with the AD5425/AD5426/AD5432/AD5443 family of DACs.

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