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FEATURES Single 5 V Supply 333 kSPS Throughput Rate/؎2 LSB DNL—A Grade 285 kSPS Throughput Rate/؎1 LSB DNL—K Grade A and K Grades Guaranteed to 125؇C/238 kSPS
Throughput Rate Pseudo-Differential Input with Two Input Ranges System and Self-Calibration with Autocalibration on
Power-Up Read/Write Capability of Calibration Data Low Power: 60 mW Typ Power-Down Mode: 5 W Typ Power Consumption Flexible Serial Interface: 8051/SPI®/QSPI™/P Compatible 24-Lead PDIP, SOIC, and SSOP Packages
APPLICATIONS Digital Signal Processing Speech Recognition and Synthesis Spectrum Analysis DSP Servo Control Instrumentation and Control Systems High Speed Modems Automotive
AIN (+) AIN (–)
REFIN/ REFOUT
14-Bit 333 kSPS Serial A/D Converter
AD7851
FUNCTIONAL BLOCK DIAGRAM
AVDD
AGND
AGND
T/H
4.096V REFERENCE
AD7851
DVDD DGND
BUF
COMP
AMODE
CREF1 CREF2
CAL
CHARGE REDISTRIBUTION
DAC
CALIBRATION MEMORY
AND CONTROLLER
SAR + ADC CONTROL
CLKIN CONVST
BUSY SLEEP
SERIAL INTERFACE/CON.