qt1080 Quantum Research Group, qt1080 Datasheet
qt1080
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qt1080 Summary of contents
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... Mobile phones QT1080 charge-transfer (’QT’) QTouch self-contained digital controller capable of detecting near-proximity or touch eight electrodes. It allows electrodes to project independent sense fields through any dielectric such as glass or plastic. This capability coupled with its continuous self-calibration feature can lead to entirely new product concepts, adding high value to product designs. The devices are designed specifically for human interfaces, like control panels, appliances, gaming devices, lighting controls, or anywhere a mechanical switch or button may be found ...
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... LP Mode Typical Response Times 8 4.8 Mechanical - 32-QFN Package 8 4.9 Mechanical - 48-SSOP Package 8 4.10 Part Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . QT1080 R11.06/0806 ...
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... Spread-spectrum operation works with the DI mechanism to dramatically reduce the probability of false detection due to noise. Sync Mode: The QT1080 features a Sync mode to allow the device to slave to an external signal source, such as a mains signal (50/60Hz), to limit interference effects. This is performed using the SYNC/LP pin. Sync mode operates by triggering two sequential acquire bursts, in sequence A-B from the Sync signal ...
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... Rising edge sync or LP pulse Active = any key in detect Leave open Also, binary coded output 0 Also, binary coded output 1 Also, binary coded output 2 In binary coded mode, these pins are clamped internally to Vss QT1080 R11.06/0806 - Vdd - - - Open Open or Open Open or ...
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... The required value of spread-spectrum capacitor C Rb2 will vary according to the lengths of the acquire bursts, see Section 3.2. A typical value 100nF OUT_7 31 OUT_6 30 OUT_5 29 OUT_4 28 OUT_3 27 OUT_2 26 OUT_1 25 OUT_0 OUT_0 FAST-DETECT Off Enabled Off Off QT1080 R11.06/0806 KEY 2 KEY 1 KEY ...
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... The required value of spread-spectrum capacitor C Rb2 will vary according to the lengths of the acquire bursts, see Section 3.2. A typical value 100nF OUT_7 OUT_6 OUT_5 OUT_4 OUT_3 OUT_2 OUT_1 OUT_0 OUT_0 Enabled Off QT1080 R11.06/0806 KEY 2 KEY 1 KEY 0 SS ...
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... The SYNC input of the QT1080 is positive pulse triggered. If the SYNC input does not change, the device will free-run at its own rate after ~150ms. ...
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... AKS Function Pins The QT1080 features an adjacent key suppression ( AKS) function with two modes. Option resistors act to set this feature according to Tables 1.2 and 1.6. AKS can also be disabled, allowing any combination of keys to become active at the same time. When operating, the modes are: Global: AKS functions operates across all eight keys ...
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... Vdd and Vss ; the bypass capacitor should be routed with very short tracks to the device’s Vss and Vdd pins. 3.5 PCB Layout and Construction Refer to Quantum application note AN-KD02 for information related to layout and construction matters. 9 QT1080 R11.06/0806 ...
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... Total deviation µ Both bursts together 200ms LP setting ms End of touch Units Notes mA @ Vdd = 5.0 @ Vdd = 4.0 @ Vdd = 3.6 @ Vdd = 3.3 @ Vdd = 3.0 @ Vdd = 2.8 µA @ Vdd = 3.0; 360ms LP mode V/s Required for start-up, w/o external reset circuit 7mA sink V 2.5mA source µA bits QT1080 R11.06/0806 ...
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... Idd Curves (Average 5pF 4.7nF Spread spectrum circuit of Fig. 1.1. QT1080 Idd (norm al m ode 5.0 4.0 3.0 2.0 1.0 Rb1=12K Rb2=22K 0.0 2.5 3 3.5 4 Vdd(V) QT1080 Idd (200m s response) µA 400 300 200 100 Rb1=12K Rb2=22K 0 2.5 3 3.5 4 Vdd( 5pF 4.7nF Rosc = 18K ; no spread spectrum circuit QT1080 Idd (norm al m ode ...
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... Vdd lQ 240 230 220 210 200 190 180 170 160 4.5 5 5.5 Response Time vs Vdd - 360ms Setting 430 410 390 370 350 330 310 290 2.5 3 3.5 4 Vdd 12 Response Time vs Vdd - 200ms Setting 2.5 3 3.5 4 4.5 Vdd 4.5 5 5.5 QT1080 R11.06/0806 5 5.5 ...
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... If the final application requires this area to be soldered for mechanical reasons, the pad to which it is soldered must be isolated and contained under the footprint only. 4.9 Mechanical - 48-SSOP Package Min 10.03 Max 10. 0.95 0.02 0.05 0.25 0.32 0.20 REF - 5.00 5.10 - 3.65 5.00 5.10 - 3.65 0.50 - 0.40 0.50 - 0.075 All dimensions in millimeters 7.39 0.20 2.16 0.10 0.635 Typ 7.59 0.30 2.51 0. 15.57 0.10 0. 16.18 0.30 0.89 8 QT1080 R11.06/0806 ...
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... Part Marking 32-QFN QT1080 ©QRG 11 YYWWG run nr. Pin 1 'run nr Digit Run Number Identification lQ QRG Part Pin 48 No. QRG Revision Code DIMPLE 'YY' = Year of manufacture: 'WW' = Week of manufacture: Pin 1 'G' = Green/RoHS Compliant. 14 48-SSOP QT1080-IS48G © QRG 0803 R11 QProx TM <datecode> QT1080 R11.06/0806 ...
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... NOTES QT1080 R11.06/0806 ...
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Tel: +44 (0)23 8056 5600 Fax: +44 (0)23 8045 3939 This device is covered under one or more United States and corresponding international patents. QRG patent numbers can be found online at www.qprox.com. Numerous further patents are pending, which ...