qt1101 Quantum Research Group, qt1101 Datasheet - Page 11
qt1101
Manufacturer Part Number
qt1101
Description
10 Key Qtouch? Sensor Ic
Manufacturer
Quantum Research Group
Datasheet
1.QT1101.pdf
(16 pages)
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4.5 Signal Processing
Vdd = 5.0V, Ta = recommended, Cx = 5pF, Cs = 4.7nF, 2µs QT Pulses
Lq
Description
Detection threshold
Detection hysteresis
Anti-detection threshold
Anti-detection recalibration delay
Detect Integrator filter, normal mode
Detect Integrator filter, Fast mode
Max On-Duration
Normal drift compensation rate
Anti drift compensation rate
10, 60, inf
Value
2,000
500
10
2
6
2
6
2
samples
samples
ms/level
ms/level
counts
counts
counts
Units
secs
secs
Notes
Threshold for increase in Cx load
Threshold for decrease of Cx load
Time to recalibrate if Cx load has exceeded anti-detection threshold
Must be consecutive or detection fails
Must be consecutive or detection fails
Option pin selected
Towards increasing Cx load
Towards decreasing Cx load
11
QT1101 R4.06/0806