AD7859
FEATURES
Specified for V DD of 3 V to 5.5 V AD7859- 200 k SPS; AD7859L- 100 k SPS System and Self-Calibration Low Power Normal Operation AD7859: 15 m W (VDD = 3 V) AD7859L: 5.5 m W (V DD = 3 V) Using Automatic Power-Down After Conversion (25 W) AD7859: 1.3 m W (VDD = 3 V 10 k SPS) AD7859L: 650 W (VDD = 3 V 10 k SPS) Flexible Parallel Interface: 16-Bit Parallel/8-Bit Parallel 44-Pin PQFP and PLCC Packages APPLICATIONS Battery-Powered Systems (Personal Digital Assistants, Medical Instruments, Mobile munications) Pen puters Instrumentation and Control Systems High Speed Modems GENERAL DESCRIPTION
3 V to 5 V Single Supply, 200 k SPS 8-Channel, 12-Bit Sampling ADCs AD7859/AD7859L-
FUNCTIONAL BLOCK DIAGRAM
AVDD AGND AIN1 I/P MUX AIN8 2.5V REFERENCE P REFIN/ REFOUT BUF DGND T/H DVDD
AD7859/AD7859L
CREF1
CHARGE REDISTRIBUTION DAC CLKIN
CREF2 CALIBRATION MEMORY AND CONTROLLER CAL
SAR + ADC CONTROL
CONVST BUSY SLEEP
PARALLEL INTERFACE/CONTROL REGISTER
The AD7859/AD7859L are high speed, low...
