AD7948BR

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The AD7948BR is a high-performance 12-bit digital-to-analog converter (DAC) with a differential voltage output. It is suitable for use in many applications where high accuracy, high resolution and low power dissipation is required such as communications, industrial and medical instrumentation, data acquisition systems and digital control systems.

The AD7948BR is a CMOS DAC with a 2\'s complement input format. The device has a wide differential voltage output range of +/- 10V, is supplied in a 16-pin SOIC package and is rated for operation from 0°C to +70°C.

The AD7948BR consists of a 12-bit current-output DAC and an integrated low-noise buffer amplifier. The DAC output current is routed through a precision current-to-voltage converter providing the desired differential voltage output. The buffer amplifier is provided to boost the output current and makes the ADC suitable for wide load conditions.

A low noise, wide bandwidth feedback loop inside the device ensures that the differential output voltage tracks the programmed DAC code over the full operating temperature range. The device also has an excellent THD of -88dB with fast settling time and low offset and gain errors.

The operating principle of the AD7948BR is simple. A serial digital data word is provided on the input, which is converted to a 12-bit value inside the device. The 12-bit value is then converted to an equivalent output current by the integrated DAC. This current is then converted to a differential voltage by the integrated voltage-to-current converter. This differential voltage output is then buffered and amplified by the integrated low-noise amplifier.

The AD7948BR is an ideal choice for applications which require high accuracy, precision and high resolution. The device is suitable for data acquisition, industrial and medical instrumentation, communication systems and digital control systems. The device can be used to achieve a wide dynamic range, accurate gain and very low power dissipation.

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