Datasheet Summary
LC2MOS 20-Bit A/D Converter
Features
Monolithic 16-Bit ADC 0.0015% Linearity Error On-Chip Self-Calibration Circuitry Programmable Low-Pass Filter
0.1 Hz to 10 Hz Corner Frequency 0 V to +2.5 V or ؎2.5 V Analog Input Range 4 kSPS Output Data Rate Flexible Serial Interface Ultralow Power
APPLICATIONS Industrial Process Control Weigh Scales Portable Instrumentation Remote Data Acquisition
FUNCTIONAL BLOCK DIAGRAM
DVDD 15 AVDD 14
AVSS 7
DVSS 6
SC1 4
SC2 17
CALIBRATION SRAM
CALIBRATION MICROCONTROLLER
13 CAL
AIN 9 VREF 10 AGND 8 DGND 5
20-BIT CHARGE BALANCE A/D CONVERTER
ANALOG MODULATOR
6-POLE GAUSSIAN LOW-PASS
DIGITAL FILTER
12 BP/UP 11 SLEEP
CLOCK...