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2.7V至5.5V，400kSPS 8/10位采样模数转换器AD7813数据表
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The AD7813 is a high-speed， microprocessor-compatible， 8-/10-bit analog-to-digital converter with a maximum throughput of 400 kSPS. The converter operates off a single 2.7 V to 5.5 V supply and contains a 2.3 µs successive approximation A/D converter， track/hold circuitry， on-chip clock oscillator and 8-bit wide parallel interface. The parallel interface is designed to allow easy interfacing to microprocessors and DSPs. The 10-bit conversion result is read by carrying out two 8-bit read operations. The first read operation accesses the 8 MSBs of the ADC conversion result and the second read accesses the 2 LSBs. Using only address decoding logic the AD7813 is easily mapped into the microprocessor address space. When used in its power-down mode， the AD7813 automatically powers down at the end of a conversion and powers up at the start of a new conversion. This feature significantly reduces the power consumption of the part at lower throughput rates. The AD7813 can also operate in a high speed mode where the part is not powered down between conversions. In this mode of operation the part is capable of providing 400 kSPS throughput. The part is available in a small， 16-lead， 0.3“ wide， plastic dualin-line package （DIP）， in a 16-lead， 0.15” wide， narrow body small outline IC （SOIC） and in a 16-lead thin shrink small outline package （TSSOP）.
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