AD7883

a LC2MOS 12-Bit, 3.3 V Sampling ADC AD7883 FEATURES Battery-Compatible Supply Voltage: Guaranteed Specs for VDD of 3 V to 3.6 V 12-Bit Monolithic A/D Converter 50 kHz Throughput Rate 15 ␮s Conversion Time 5 ␮s On-Chip Track/Hold Amplifier Low Power Power Save Mode: 1 mW typ Normal Operation: 8 mW typ 70 dB SNR Small 24-Lead SOIC and 0.3" DIP Packages APPLICATIONS Battery Powered Portable Systems Laptop Computers VINA VINB VREF AGND CS CLKIN CONVST RD BUSY FUNCTIONAL BLOCK DIAGRAM VDD SAMPLING COMPARATOR + – LOW POWER CONTROL CIRCUIT 12-BIT DAC CONTROL LOGIC SAR + COUNTER THREE STATE BUFFERS AD7883 MODE GENERAL DESCRIPTION The AD7883 is a high speed, low power, 12-bit A/D converter which operates from a single +3 V to +3.6 V supply. It consists of a 5 µs track/hold amplifier, a 15 µs successive-approximation ADC, versatile interface logic and a multiple-input-range circuit. The part also includes a power save feature. Fast bus access times and standard control inpu...