Part # AD7152 AD7153 datasheet

Part Manufacturer: Analog Devices

Analog Devices

Part Description: AD7152/AD7153 12-Bit Capacitance-to-Digital Converter Data Sheet (Rev. 0)

Part Details:

12-Bit Capacitance-to-Digital Converter AD7152/AD7153 FEATURES GENERAL DESCRIPTION Capacitance-to-digital converters The AD7152/AD7153 are 12-bit sigma-delta (-) capacitance-to- Interfaces to floating sensors digital converters (CDCs). The capacitance to be measured Resolution down to 0.25 fF (that is, up to 12 ENOB) is connected directly to the device inputs. The architecture Linearity: 0.05% features inherent high resolution (12-bit no missing codes, Common-mode (not changing) capacitance up to 5 pF up to 12-bit effective resolution) and high linearity (±0.05%). Four capacitance ranges selectable per operation mode The AD7152/AD7153 have four capacitance input ranges per ±0.25 pF to ±2 pF in differential mode operation mode, ±0.25 pF to ±2 pF in differential mode and 0.5 pF to 4 pF in single-ended mode 0.5 pF to 4 pF in single-ended mode. Tolerant of parasitic capacitance to ground up to 50 pF The AD7152/AD7153 can accept up to 5 pF common-mode Conversion time per channel: 5 ms, 20 ms, 50 ms, and 60 ms capacitance (not changing), which can be balanced by a Internal clock oscillator programmable on-chip, digital-to-capacitance converter 2-wire serial interface (I2C-compatible) (CAPDAC). Power 2.7 V to 3.6 V single-supply operation The AD7153 has one capacitance input channel, while the 100 A current consumption AD7152 has two channels. Each channel can be configured Operating temperature: -40°C to +85°C as single-ended or differential. The AD7152/AD7153 are 10-lead MSOP package designed for floating capacitive sensors. APPLICATIONS The AD7152/AD7153 have a 2-wire, I2C®-compatible serial interface. Both parts can operate with a single power supply Automotive, industrial, and medical systems for from 2.7 V to 3.6 V. They are specified over the temperature Pressure measurement range of -40°C to +85°C and are available in a 10-lead MSOP Position sensing package. Level sensing Flowmeters Humidity sensing FUNCTIONAL BLOCK DIAGRAMS VDD VDD AD7152 CAP+ AD7153

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AD7152 AD7153.pdf Datasheet