QT1103-ISG View Datasheet(PDF) - Quantum Research Group

Part Name

Description

Manufacturer

QT1103-ISG

QTOUCH™ 10-KEY SENSOR IC

Quantum Research Group 

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 Threshold for increase in Cx load

Detection hysteresis

2

counts

Anti-detection threshold

6

counts Threshold for decrease of Cx load

Anti-detection recalibration delay

2

secs Time to recalibrate if Cx load has exceeded anti-detection threshold

Detect Integrator filter, normal mode

6

samples Must be consecutive or detection fails

Detect Integrator filter, Fast mode

3

samples Must be consecutive or detection fails

Max On-Duration

10, 60, inf

secs Option pin selected

Normal drift compensation rate

2,000

ms/level Towards increasing Cx load

Anti drift compensation rate

500

ms/level Towards decreasing Cx load

Lq

14

QT1103_3R0.03_0607

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