QT1103-ISG Atmel, QT1103-ISG Datasheet - Page 14

• Manufacturer Part Number: QT1103-ISG
• Description: IC SENSOR QTOUCH 10CH 32QFN
• Manufacturer: Atmel
• Series: QTouch™r
• Type: Capacitiver

Specifications of QT1103-ISG

• Touch Panel Interface: 1, 2-Wire
• Number Of Inputs/keys: 10 Key
• Resolution (bits): 8 b
• Data Interface: Serial
• Data Rate/sampling Rate (sps, Bps): 38.4k
• Voltage Reference: *
• Voltage - Supply: 2.8 V ~ 5 V
• Current - Supply: 8mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-QFN
• Output Type: Logic
• Interface: RS-232
• Input Type: Logic
• For Use With: 427-1134 - EVAL BOARD FOR QT1103
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 427-1129-2

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
3
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
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QT1103_3R0.03_0607