QT118HA-ISG Datasheet, PDF (1/12 Pages) Quantum Research Group – NOT RECOMMENDED FOR NEW DESIGNS

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QT118HA-ISG
NOT RECOMMENDED FOR NEW DESIGNS
Less expensive than many mechanical switches
Projects a ‘touch button’ through any dielectric
100% autocal for life - no adjustments required
No active external components
Piezo sounder direct drive for ‘tactile’ click feedback
LED drive for visual feedback
2 ~ 5V single supply operation
10µA at 2.5V - very low power drain
Toggle mode for on/off control (via option pins)
10s or 60s auto-recalibration timeout (via option pins)
Pulse output mode (via option pins)
Gain settings in 3 discrete levels
Simple 2-wire operation possible
HeartBeat™ health indicator on output
Pb-Free package
Vdd 1
Out 2
Opt1 3
Opt2 4
8 Vss
7 Sns2
6 Sns1
5 Gain
The QT118HA is a Flash version of the QT118H. The QT118HA is form, fit and function
compatible with the older device, except that the QT118HA is more sensitive than the
older device, necessitating a significant reduction in Cs capacitance. See Section 1 on page 2 for
differences.
This device is intended as a replacement for the QT118H in existing
designs already in production, but is not recommended for new designs.
For further device migration plans please
consult your local Atmel or Quantum representative.
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©1999-2008 Quantum Research Group
QT118HA_AR1.02_0408