qt60040 Quantum Research Group, qt60040 Datasheet
qt60040
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qt60040 Summary of contents
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... Security keypanels Industrial keyboards The QT60040 digital charge-transfer (“QT”) QMatrix™ designed to detect touch keys in a scanned 4x1 matrix. It will project the keys through almost any dielectric, like glass, plastic, stone, ceramic, and even most kinds of wood thicknesses of 6mm ...
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... The QT60040 uses a 4x1 matrix, having 4 'X' drive lines and 1 'Y' receive line. This configuration ...
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... Research Group Ltd. Figure 1-4 QT60040 Circuit Model C FINGER C C X2A X2B DRIVE Vref S1 C CHARGE STATE MACHINE DONE START PROCESSOR OUT Figure 1-5 Circuit Switch Timings ...
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... Since key touches result in negative signal swings, the threshold is set below the signal reference level. The QT60040 employs a hysteresis of 25% of the delta between the reference and threshold levels. The signal must rise by 25% of the distance from threshold to reference before the detection event drops out and the key registers as untouched ...
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... M1 digital spikes, sags, and surges which can adversely affect the circuit. The QT60040 will track slow changes in Vcc, but it can be M2 adversely affected by rapid voltage steps and impulse noise on the supply rail. ...
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... OPT1 OPT2 47nF QT60040 VCC U2 VB LM78L05ACZA 1N4001 2000 QRG Ltd QT60040 / R1.04 / 0303 ...
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... Vdd = 5.0V 47nF recommended range, unless otherwise noted A Parameter Description 4.4 AC SPECIFICATIONS Vdd = 5.0V 47nF recommended range, unless otherwise noted. Test circuit of Figure 3-1. A Parameter Description lQ Min Typ Max Units Min Typ Max Units - +125 C Notes Notes QT60040 / R1.04 / 0303 ...
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... Research Group Ltd. 4.5 SIGNAL PROCESSING Parameter Description 5.1 - ORDERING INFORMATION PART QT60040-D QT60040-IS lQ Min Typ Max TEMP RANGE PACKAGE 0 - 70C PDIP-14 -40 - 85C SOIC- Units Notes MARKING QT60040 QT60040 - I QT60040 / R1.04 / 0303 ...
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... BSC 0.115 0.145 0.015 - 0.125 0.135 0.14 0.17 0.31 0.31 0.32 0.39 0.008 0.015 Typical ß×45º e ø E Base level Inches Min Max Notes 0.337 0.347 0.228 0.244 0.150 0.157 0.31 0.33 0.004 0.010 0.050 0.050 BSC 0.014 0.020 0.016 0.050 0.008 0.010 0.014 0.020 0 8 QT60040 / R1.04 / 0303 ...
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... Tel: +44 (0)23 8056 5600 Fax: +44 (0)23 8045 3939 Copyright © 2002 QRG Ltd. All rights reserved. Corporate Headquarters 1 Mitchell Point Ensign Way, Hamble SO31 4RF Great Britain admin@qprox.com www.qprox.com North America 651 Holiday Drive Bldg 300 Pittsburgh, PA 15220 USA Tel: 412-391-7367 Fax: 412-291-1015 QT60040 Patented and patents pending ...