QT150-ASG Atmel, QT150-ASG Datasheet
QT150-ASG
Specifications of QT150-ASG
Related parts for QT150-ASG
QT150-ASG Summary of contents
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... PC Peripherals Backlighted buttons QT140 / QT150 charge-transfer (“QT’”) QTouch ICs are self-contained digital controllers capable of detecting near-proximity or touch electrodes. They allow electrodes to project independent sense fields through any dielectric like glass, plastic, stone, ceramic, and wood. They can also turn metal-bearing objects into intrinsic sensors, making them responsive to proximity or touch ...
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... SNS1A SYNC SNS1B NC SNS2A OUT4 SNS2B OUT3 SNS3A SNS3B OUT2 SNS4A OUT1 AKS SNS4B Vss Fig 1-1 QT140 Pinouts NOTE: SSOP / DIP Pinouts are not the same! lQ QT140 / QT150 DIP-28 Pin Name 1 Vdd 2 Vdd 3 Vss 4 Vss 5 Vss 6 SNS1A 7 SNS1B 8 SNS2A 9 SNS2B 10 ...
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Unused channels channel is not used, a dummy sense capacitor (nominal value: 1nF) of any type must be connected between the unused SNSnA / SNSnB pins ensure correct operation. Unused pins: Unused device pins labeled NC should remain ...
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Figure 1-4 Open Electrode for Back-Illumination complete the return path. If the circuit ground cannot be earth grounded by wire, for example via the supply connections, then a ‘virtual capacitive ground’ may be required to increase return coupling. A ‘virtual ...
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... Figure 1-6 Basic Circuit (QT140, SSOP Package) Figure 1-8 Synchronized QT140, QT150 Circuits Figure 1-7 Basic Circuit (QT150, SSOP Package) ...
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... QT140/QT150 SPECIFICS 2.1 SIGNAL PROCESSING These devices process all signals using 16 bit math, using a number of algorithms pioneered by Quantum. These algorithms are specifically designed to provide for high survivability in the face of adverse environmental changes. 2.1 RIFT OMPENSATION Signal drift can occur because of changes in Cx, Cs, and Vdd over time ...
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OUTPUT FEATURES These devices are designed for maximum flexibility and can accommodate most popular sensing requirements via option pins. OPT1 and OPT2 inputs control the output mode and Max On-Duration settings; OC controls the output drive type; AKS controls ...
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... All the chips in a system, whether 1 or 20, should connect to this common line with a single 10K pullup resistor. A single QT140 or QT150 must also use a pullup resistor. SYNC floats high during the Channel 1 sensing burst. When the IC completes Channel 1 sensing, it pulls down SYNC. ...
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Unused channels should not have sense traces or electrodes connected to them. 3.6 ESD PROTECTION In cases where the electrode is placed behind a dielectric panel, the IC will be protected from direct static discharge. However even with a panel, ...
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... DD Operating temperature range, 4.5V - 5.5V (QT140-AS, QT150-AS -40 - +105C Operating temperature range, 3.0V - 4.5V (QT140-AS, QT150-AS -40 - +85C Operating temperature range, all voltages (QT140-D, QT150-D) ...
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SIGNAL PROCESSING Description Threshold differential Hysteresis Consensus filter length (Detection integrator) Positive drift compensation rate Negative drift compensation rate Post-detection recalibration timer duration Burst Duration v s. Cs, Cx 18000 16000 14000 12000 10000 8000 6000 4000 2000 0 ...
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PACKAGE OUTLINES SYMBOL Min a 7.112 A 7.874 M 34.163 m 33.02 Q 0.584 P 0.406 L 0.203 L1 1.016 F 2.54 R 3.175 r 0.381 S 3.175 S1 3.632 Aa 7.874 x 8.128 Y 0.203 Seating level ...
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... ORDERING INFORMATION PART QT140-D QT140-AS QT150-D QT150-AS lQ TEMP RANGE PACKAGE 0 - 70C PDIP-28 -40 - 105C SSOP- 70C PDIP-28 -40 - 105C SSOP-28 13 MARKING QT140 QT140-A QT150 QT150-A QT140/150 1.01/1102 ...
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The specifications set out in this document are subject to change without notice. All products sold and services supplied by QRG are subject to our Terms and Conditions of sale and supply of services which are available online at ...