4.5 Signal Processing
Vdd = 5.0V, Ta = recommended, Cx = 5pF, Cs = 4.7nF, 2µs QT Pulses
Description
Value
Units
Notes
Detection threshold
10
counts
counts
counts
secs
Threshold for increase in Cx load
Detection hysteresis
2
Anti-detection threshold
6
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
Anti-detection recalibration delay
Detect Integrator filter, normal mode
Detect Integrator filter, Fast mode
Max On-Duration
2
6
2
samples
samples
secs
10, 60, inf
2,000
500
Normal drift compensation rate
Anti drift compensation rate
ms/level
ms/level
Towards increasing Cx load
Towards decreasing Cx load
Lq
11
QT1101 R4.06/0806
QUANTUM [ QUANTUM RESEARCH GROUP ]
