应用功能:2.7 V to 5.5 V, 200 kSPS8-Bit Sampling ADC The AD7819 is a high speed, microprocessor-compatible, 8-bitanalog-to-digital converter with a maximum throughput of200 kSPS. The converter operates off a single 2.7 V to 5.5 Vsupply and contains a 4.5 μs successive approximation A/D converter, track/hold circuitry, on-chip clock oscillator and 8-bitwide parallel interface.