EVK2160A Atmel, EVK2160A Datasheet - Page 6

• Manufacturer Part Number: EVK2160A
• Description: KIT EVAL FOR AT42QT2160-MMU
• Manufacturer: Atmel
• Series: Quantum, QTouch™r

Specifications of EVK2160A

• Sensor Type: Touch, Capacitive
• Sensing Range: 8 Buttons/Keys, Slider
• Interface: I²C
• Voltage - Supply: 1.8 V ~ 5.5 V
• Embedded: No
• Utilized Ic / Part: AT42QT2160
• Silicon Manufacturer: Atmel
• Silicon Core Number: AT42QT2160-MMU
• Kit Application Type: Sensing - Touch / Proximity
• Application Sub Type: Capacitive Touch
• Kit Contents: Board CD Docs
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Sensitivity: -
• Lead Free Status / Rohs Status: Supplier Unconfirmed
• Other names: 427-1141

6
AT42QT2160
Unlike other QT circuits, the Cs capacitor values on QT2160 devices have no effect on
conversion gain. However, they do affect conversion time.
Unused Y lines should be left open.
Figure 4-1.
Figure 4-2.
Figure 4-3.
VCs – Nonlinear During Burst
(Burst too long, or Cs too small, or X-Y transcapacitance too large)
VCs – Poor Gain, Nonlinear During Burst
(Excess capacitance from Y line to Gnd)
VCs – Correct
X Drive
X Drive
X Drive
YnB
YnB
YnB
9502A–AT42–07/08