AD7694

16位低功耗 16-Bit Lower Power

Product Details

The is a 16-bit, 250 kSPS, charge redistribution successive-approximation Analog-to-Digital Converter which operates from a single power supply, VDD between 2.7 V to 5.25 V. It con tains a very low power high-speed 16-bit sampling ADC with no missing codes B grade, an internal conversion clock and a SPI compatible serial interface port. The part also contains a low noise, wide bandwidth, very short aperture delay track/hold circuit. On the CNV rising edge, it samples an analog input IN+ between 0 V to REF with respect to a ground sense IN-. The reference voltage REF is applied externally and can be set up to the supply voltage.

Its power scales linearly with throughput.

The AD7694 is housed in a 8-lead µSOIC with operation specified from –40°C to +85°C.

**Applications**

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Battery Powered Equipments:

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Medical instruments

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Mobile communications

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Personal digital assistants

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Data Acquisition

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Instrumentation

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Process Control

### Features and Benefits

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16 Bits Resolution

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Throughput: 250 kSPS

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INL: ±4 LSB Max

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Power Dissipation:

800 µA @ 5V/100 kSPS

540 µA @ 2.7V/100 kSPS

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Pseudo-Differential Analog Input Range: 0 V to VREF with VREF up to VDD

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S/N+D: 92 dB @ 20 kHz

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No Pipeline Delay

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Single Supply Operation 2.7 V or 5 V

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Serial Interface SPI®/QSPI™/µWire/DSP compatible

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µSOIC Package µSO8

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Improved 2nd Source of LTC1864 and LTC1864L