AD667BD

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Data Acquisition - Digital to Analog Converters (DAC) enable us to convert digital signals into analog output signals. The AD667BD is a high performance, complete 16 bit bidirectional digital to analog converter (DAC) developed by Analog Devices Inc., which is widely applied in consumer & professional audio systems, automotive applications, and voice over IP.

The AD667BD and its series are complete end to end design solutions from the digital application interface to the analog output. This device is incorporated with advanced and exclusive features that allow reduction of many external components, eliminating the board space and cost from the designs. The converter also offers excellent linearity and speed, which make it an ideal product for audio applications requiring wide dynamic range and/or multi-channel applications.

The working principle of the AD667BD consists of an integrated digital-to-analog converter (DAC) and op-amp based buffer amplifier. This combination of components powers the conveying of the binary information given to the input of the DAC into a high-speed, low jitter, and distortion free voltage output. This is accomplished by providing a bineary code consisting of 16 bits into the AD667BD\'s serial data register.

The DAC of the AD667BD has a full-scale performance which ranges from 5V to 10V full-scale by internal scaling, eliminating the need for an external scaling up resistor. The DAC also features a low linearity error of 0.002%. It is further incorporated with an anti-alias filter with gain of x2 allowing the usage of single-ended full bridge input. This allows for audio data rates of up to 192 kS/s without requiring any external filters.

The AD667BD DAC is further enhanced with a low-noise double buffered output amplifier with a gain of twelve. High slew rate of the output amplifier enables the AD667BD to drive heavily loaded signals with minimal settling time. The buffered amplifier facilitates the exclusion of external load capacitors allowing a simplified 2-wire connection between the DAC and the application board.

In conclusion, the AD667BD is a high performance, complete 16 bit bidirectional digital to analog converter (DAC) with advanced and exclusive features. The combination of its integrated DAC and op-amp based buffer amplifier provide an efficient and reliable method of processing digital signals into analog voltages. It is an ideal choice for audio applications requiring wide dynamic range and/or multi-channel applications.

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