16-bit SAR ADC addresses demand for small size, high resolution devices

19 June 2002 Analogue, Mixed Signal, LSI

Analog Devices has introduced the AD7680, a 16-bit successive approximation register (SAR) ADC with 15-bits no missing codes in a 6-lead SOT 23 package.

This is the industry's first 16-bit SAR ADC in this tiny package. Featuring a fast throughput rate of 100 kSa/s, and using an advanced design technique to achieve low power dissipation -3 mW at 3 V and 15 mW at 5 V, typical, this converter is the most recent addition to ADI's PulSAR family of 16-bit SAR ADCs. SAR architecture means there are no pipeline delays.

The ADC operates from a single 3,0 V to 5,25 V power supply and contains a low noise, wide bandwidth track/hold amplifier that guarantees performance with inputs up to 10 kHz. Data acquisition and conversion are controlled using the Chip Select pin and an external serial clock, allowing the device to interface with microprocessors or DSPs. The part goes into a low-power mode when conversion is complete, reducing the average power and providing maximum efficiency at lower throughput rates. Power consumption in shut-down is only 0,5 µA max. The reference for the AD7680 is derived from the power supply, allowing wide dynamic input range to the ADC.

Analog Data Products

011 531 1400

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