QT301 - CAPACITANCE TO DIGITAL CONVERTER

Description

The QT301 has internal EEPROM to store the two calibration points.

Features

spread-spectrum burst modulation, permitting extremely high noise rejection characteristics for very robust signals even in high EMI environments. The device requires only a single sampling capacitor (Cs) to acquire signals. The value of this capacitor controls the gain of the sensor, and it can be adjusted over 2½ decades of range from 1nF to 500nF. No external switches, opamps, or other components are required. TA 00C to +700C -400C to +850C.

QUANTUM

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Datasheet Details

Part number	QT301
Manufacturer	QUANTUM
File Size	289.36 KB
Description	CAPACITANCE TO DIGITAL CONVERTER
Datasheet	QT301 Datasheet
Additional preview pages of the QT301 datasheet.

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Full PDF Text Transcription

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www.DataSheet4U.com jfbkLQ CAPACITANCE TO ANALOG CONVERTER QT301 Capacitance to Analog Converter (CAC) IC Patented charge-transfer conversion method Sub-ranging Direct-to-Analog conversion Rescaleable PWM: wide dynamic range End-to-end calibration (gain, span) via CAL pins 100 kHz PWM Spread spectrum acquisition bursts for low noise Sample on demand via Sync pin Only one external sample capacitor SYNC CAL_DN SNS1 VSS 1 8 VDD CAL_UP PWM SNS2 QT301 2 3 4 7 6 5 APPLICATIONS Fluid level sensors Proximity sensors Moisture detection Position sensing Transducer driver Material sensors The QT301 charge-transfer (QT) IC is a self-contained Capacitance-to-Analog-Converter (CAC) capable of detecting femotofarad level changes in capacitance.

Published: Dec 19, 2006 |