QT301中文资料CAPACITANCE TO ANALOG CONVERTER数据手册Quantum规格书

描述 Description

CAPACITANCE TO ANALOG CONVERTERThe QT301 charge-transfer (QT) IC is a self-contained Capacitance-to-Analog-Converter (CAC) capable of detecting femotofarad level changes in capacitance. This part is designed primarily for stand-alone instrumentation applications.
Primary applications include fluid level sensors, distance sensors, material detectors, transducer amplifiers for pressure and humidity sensing functions, and other uses requiring quantified capacitance data.
Unlike other Quantum products, the QT301 does not process its acquired data. Its only output is raw, unprocessed data in filterable PWM form that can be translated into an analog voltage by a simple RC network. This allows the designer to treat the device as a CAC for measurement applications.\u0001Capacitance to Analog Converter (CAC) IC
\u0001Patented charge-transfer conversion method
\u0001Sub-ranging Direct-to-Analog conversion
\u0001Rescaleable PWM: wide dynamic range
\u0001End-to-end calibration (gain, span) via CAL pins
\u0001100 kHz PWM
\u0001Spread spectrum acquisition bursts for low noise
\u0001Sample on demand via Sync pin
\u0001Only one external sample capacitorAPPLICATIONS
Proximity sensors
Fluid level sensors
Position sensing
Moisture detection
Material sensors
Transducer driver