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
