Description
Data Sheet 12-Bit Capacitance-to-Digital Converter AD7152/AD7153 07450-001 .
Features
* Capacitance-to-digital converters Interfaces to floating sensors Resolution down to 0.25 fF (that is, up to 12 ENOB) Linearity: 0.05% Common-mode (not changing) capacitance up to 5 pF Four capacitance ranges selectable per operation mode ±0.25 pF to ±2 pF in differential mode 0.5 pF to 4 pF in singl
Applications
* Automotive, industrial, and medical systems for Pressure measurement Position sensing Level sensing Flowmeters Humidity sensing
FUNCTIONAL BLOCK DIAGRAMS
VDD
CIN1(+) CIN1(
* )
EXC1 CIN2(+) CIN2(
* )
EXC2
CAP+ CAP
* AD7152
CLOCK
VOLTAGE
GENERATOR REFERENCE
MUX
12-BI