QT1081 데이터 시트보기 (PDF) - Quantum Research Group

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QT1081

8-KEY QTOUCH™ SENSOR IC

Quantum Research Group 

4.5 Signal Processing

Vdd = 5.0, Ta = recommended, Cx = 5pF, Cs = 1nF

Description

Value

Detection threshold

10

Detection hysteresis

2

Anti-detection threshold

6

Anti-detection recalibration delay

2

Detect Integrator filter, normal mode

Detect Integrator filter, ‘fast’ mode

Max On-Duration

Normal drift compensation rate

Anti-drift compensation rate

6

2

10, 60, ∞

2,000

500

Units

counts

counts

counts

secs

samples

samples

secs

ms/level

ms/level

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

lQ

13

QT1081_1R0.04_0307

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