qt100 Quantum Research Group, qt100 Datasheet
qt100
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qt100 Summary of contents
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... LQ This datasheet is applicable to all revision 3 chips The QT100 charge-transfer (‘QT’) touch sensor is a self-contained digital IC capable of detecting near-proximity or touch. It will project a touch or proximity field through any dielectric like glass, plastic, stone, ceramic, and even most kinds of wood. It can also turn small metal-bearing objects into intrinsic sensors, making them responsive to proximity or touch ...
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... Moisture Sensitivity Level (MSL Datasheet Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5.1 Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5.2 Numbering Convention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . QT100_3R0.09_0707 ...
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... The delay between bursts in Fast mode is approximately 1ms, as shown in Figure 2.2. 2.1.3 Low Power Mode The QT100 runs in Low Power (LP) mode if the SYNC line is held low. In this mode it sleeps for approximately 85ms at the end of each burst, saving power but slowing response. On detecting a possible key touch, it temporarily switches to Fast mode until either the key touch is confirmed or found to be spurious (via the detect integration process) ...
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... If no detection is sensed prior to the final count, the counter is reset immediately to zero. In the QT100, the required count is four mode the device will switch to Fast mode temporarily in order to resolve the detection more quickly; after a touch is either confirmed or denied the device will revert back to normal LP mode operation automatically ...
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... Threshold Output 2.7 Response Time The QT100's response time is highly dependent on run mode and burst length, which in turn is dependent on Cs and Cx. With increasing Cs, response time slows, while increasing levels of Cx reduce response time. The response time will also be a lot slower SYNC mode due to a longer time between burst measurements ...
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... QT100. The QT100 will track slow changes badly affected by rapid voltage fluctuations highly recommended that a separate voltage regulator be used just for the QT100 to isolate it from power supply shifts caused by other components. If desired, the supply can be regulated using a Low Dropout (LDO) regulator, although such regulators often have poor transient line and load stability ...
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... Cs, Cx dependent µs ±7.5% spread spectrum variation µs ±7.5% spread spectrum variation ms ms Increases with reducing V DD Vdd, Cs and Cx dependent. See ms Section 3.2 for capacitor selection. ms µs Units Notes (At 3V) Will vary in SYNC mode and with secs V DD QT100_3R0.09_0707 +125 C + 0.6) Volts ...
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... Required for proper start-up 0 0.6 V OUT, 4mA sink V OUT, 1mA source ±1 µA 100 pF 14 bits e E ø Inches Min Max Notes 0.110 0.122 0.102 0.118 0.059 0.069 0.035 0.051 0 0.006 - - 0.038 BSC 0.014 0.02 0.014 0.022 0.004 0.008 0º 10º QT100_3R0.09_0707 Notes ...
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... Marking 4.8 Moisture Sensitivity Level (MSL) MSL Rating MSL1 lQ SOT23-6 Part Number QT100-ISG 02NN (where NN is variable) Peak Body Temperature O 260 C 9 Marking Specifications IPC/JEDEC J-STD-020C QT100_3R0.09_0707 ...
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... A minor chip revision (N) is defined as a revision change which does not affect product functionality or datasheet. lQ Part Number QT100_MXN.nn_mmyy N = minor chip revision Prereleased Product [ Released Product]) The value only stated for released parts (R). 10 Datasheet Issue Number Datasheet Release Date; (Where mm = Month Year) QT100_3R0.09_0707 ...
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... NOTES QT100_3R0.09_0707 ...
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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 ...