E102 Atmel, E102 Datasheet
E102
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E102 Summary of contents
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LQ This datasheet is applicable to all revision 2.3 chips The QT102 is a single key QTouch™ chip combining a touch-on / touch-off toggle mode with timeout and timing override functions, oriented especially towards power control of small appliances and ...
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Contents 1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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Overview 1.1 Introduction The QT102 is a single key device featuring a touch on / touch off (toggle) output with a programmable auto switch-off capability. The QT102 is a digital burst mode charge-transfer (QT) sensor designed specifically for touch ...
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Forced Sensor Recalibration The QT102 has no recalibration pin; a forced recalibration is accomplished when the device is powered up, after the recalibration timeout or when the auto-off override is released. However, supply drain is low ...
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Wiring and Parts 2.1 Application Note Refer to Application Note AN-KD02, downloadable from the Quantum website for more information on construction and design methods http://www.qprox.com, click the Support tab and then Application Notes. 2.2 Cs Sample Capacitor ...
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Wiring PIN NAME TYPE 1 OUT O To switched circuit and output polarity selection resistor (Rop) 2 VSS P Ground power pin 3 SNSK capacitor and to sense electrode To Cs capacitor and multiplier configuration resistor ...
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Operation 3.1 Acquisition Modes 3.1.1 Introduction The OUT pin of the QT102 can be configured to be active high or active low (see Section 3.3). • If active high then ‘on’ is high ‘off’ is low • If active ...
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Output Drive The OUT pin is active high and can sink or source up to 2mA. When a large value of Cs (>20nF) is used the OUT current should be limited to <1mA to prevent gain-shifting side effects, which ...
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Figure 3.7 Override Pulse (Delay Multiplier x1) SENSE ELECTRODE VDD 5 RS VDD 3 SNSK CS 4 SNS Rm VSS 2 VDD Vm VSS Tp Figure 3.8 Override Pulse (Delay Multiplier x24) SENSE ELECTRODE VDD 5 RS VDD 3 SNSK ...
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Figure 3.10 Active High Output QT102 Active High output 2.5 3 VDD (volts) QT102 Active High output, VDD = 5V 4000 3500 3000 2500 2000 1500 ...
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QT102 Active Low output, VDD = 5V 4000 Ct=100nF Ct=47nF 3500 3000 2500 2000 1500 1000 500 100 Tim ing Resistor Rt (K ohm s) QT102 Active Low output, VDD = 3V 4000 Ct=100nF ...
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Examples of Typical Applications Active low, driving PNP transistor, auto off time 500s x 24 (3.33 hours) SENSE ELECTRODE RS 10k Setting the delay multiplier to x24 will decrease the key sensitivity may be necessary to increase ...
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Specifications 4.1 Absolute Maximum Specifications Operating temp ...
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DC Specifications V = 3.0V 10nF 5pF recommended range, unless otherwise noted DD Parameter Description V Supply voltage DD I Supply current DD Iddl Supply current, LP Mode V Supply turn-on slope DDS ...
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Marking Note: the part marking shown is for high volume parts. Samples may be shipped marked 02NN. 4.8 Moisture Sensitivity Level (MSL) MSL Rating MSL1 lQ SOT23-6 Part Number QT102-ISG 2QNN (where NN is variable) Peak Body Temperature O ...
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Datasheet Control 5.1 Changes Changes this issue (datasheet issue 5) Section 2.5 Section 5.1 5.2 Numbering Convention Chip Revision (Where M = Major chip revision, A minor chip revision (N) is defined as a revision change which does not ...
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NOTES QT102_2R3.05_1007 ...
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Tel: +44 (0)23 8056 5600 Fax: +44 (0)23 8045 3939 The specifications set out in this document are subject to change without notice. All products sold and services supplied by QRG are subject to QRG’s Terms and Conditions of ...