DESCRIPTIONThe AD7853/AD7853L are high speed, low power, 12-bitADCs that operate from a single 3 V or 5 V power supply, theAD7853 being optimized for speed and the AD7853L for lowpower. The ADC powers up with a set of default conditions atwhich time it can be operated as a read-only ADC. The ADCcontains self-calibration and system-calibration options to en-sure accurate operation over time and temperature and have anumber of power-down options for low power applications.The part powers up with a set of default conditions and canoperate as a read only ADC.The AD7853 is capable of 200kHz throughput rate while theAD7853L is capable of 100 kHz throughput rate. The inputtrack-and-hold acquires a signal in 500ns and features a pseudo-differential sampling scheme. The AD7853/AD7853L voltagerange is 0 to VREF with both straight binary and twos comple-ment output coding. Input signal range is to the supply, and thepart is capable of converting full power signals to 100kHz.CMOS construction ensu FEATURESSpecified for VDD of 3V to 5.5VRead-Only OperationAD7853 200 kSPS; AD7853L 100 kSPSSystem and Self-Calibration with Autocalibration on Power-UpLow Power:AD7853:12mW (V DD = 3 V)AD7853L:4.5mW (V DD = 3 V)Automatic Power Down After Conversion (25m W)Flexible Serial Interface:8051/SPI /QSPI /mP Compatible24-Lead DIP, SOIC and SSOP Packages APPLICATIONSBattery-Powered Systems (Personal Digital Assistants,Medical Instruments, Mobile Communications)Pen ComputersInstrumentation and Control SystemsHigh Speed ModemsGENERAL DESCRIPTIONThe AD7853/AD7853L are high speed, low power, 12-bitADCs that operate from a single 3 V or 5 V power supply, theAD7853 being optimized for speed and the AD7853L for lowpower. The ADC powers up with a set of default conditions atwhich time it can be operated as a read-only ADC. The ADCcontains self-calibration and system-calibration options to en-sure accurate operation over time and temperature and have anumber of power-down options for low power applicatio SPECIFICATIONS1, 2REV. B 2 (AV DD = DV DD = +3