Electronic Components Datasheet Search
  English  ▼


AT42QT1011 Datasheet(PDF) 4 Page - ATMEL Corporation

Part # AT42QT1011
Description  One-channel Touch Sensor IC
Download  18 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT42QT1011 Datasheet(HTML) 4 Page - ATMEL Corporation

  AT42QT1011 Datasheet HTML 1Page - ATMEL Corporation AT42QT1011 Datasheet HTML 2Page - ATMEL Corporation AT42QT1011 Datasheet HTML 3Page - ATMEL Corporation AT42QT1011 Datasheet HTML 4Page - ATMEL Corporation AT42QT1011 Datasheet HTML 5Page - ATMEL Corporation AT42QT1011 Datasheet HTML 6Page - ATMEL Corporation AT42QT1011 Datasheet HTML 7Page - ATMEL Corporation AT42QT1011 Datasheet HTML 8Page - ATMEL Corporation AT42QT1011 Datasheet HTML 9Page - ATMEL Corporation Next Button
Zoom Inzoom in Zoom Outzoom out
 4 / 18 page
background image
Increasing Sensitivity
In some cases it may be desirable to increase sensitivity; for example, when using the sensor
with very thick panels having a low dielectric constant, or when the device is used as a proximity
sensor. Sensitivity can often be increased by using a larger electrode or reducing panel
thickness. Increasing electrode size can have diminishing returns, as high values of Cx will
reduce sensor gain.
The value of Cs also has a dramatic effect on sensitivity, and this can be increased in value with
the trade-off of slower response time and more power. Increasing the electrode's surface area
will not substantially increase touch sensitivity if its diameter is already much larger in surface
area than the object being detected. Panel material can also be changed to one having a higher
dielectric constant, which will better help to propagate the field.
In the case of proximity detection, usually the object being detected is on an approaching hand,
so a larger surface area can be effective.
Ground planes around and under the electrode and its SNSK trace will cause high Cx loading
and destroy gain. The possible signal-to-noise ratio benefits of ground area are more than
negated by the decreased gain from the circuit, and so ground areas around electrodes are
discouraged. Metal areas near the electrode will reduce the field strength and increase Cx
loading and should be avoided, if possible. Keep ground away from the electrodes and traces.
Decreasing Sensitivity
In some cases the QT1011 may be too sensitive. In this case gain can be easily lowered further
by decreasing Cs.
Proximity Sensing
By increasing the sensitivity, the QT1011 can be used as a very effective proximity sensor,
allowing the presence of a nearby object (typically a hand) to be detected.
In this scenario, as the object being sensed is typically a hand, very large electrode sizes can be
used, which is extremely effective in increasing the sensitivity of the detector. In this case, the
value of Cs will also need to be increased to ensure improved sensitivity, as mentioned in
Section 2.4.2. Note that, although this affects the responsiveness of the sensor, it is less of an
issue in proximity sensing applications; in such applications it is necessary to detect simply the
presence of a large object, rather than a small, precise touch.
Operation Specifics
Run Modes
The QT1011 has three running modes which depend on the state of the SYNC pin (high or low).
Fast Mode
The QT1011 runs in Fast mode if the SYNC pin is permanently high. In this mode the QT1011
runs at maximum speed at the expense of increased current consumption. Fast mode is useful
when speed of response is the prime design requirement. The delay between bursts in Fast
mode is approximately 1 ms, as shown in Figure 3-1.

Similar Part No. - AT42QT1011

ManufacturerPart #DatasheetDescription
ATMEL Corporation
AT42QT1011-MAH ATMEL-AT42QT1011-MAH Datasheet
290Kb / 25P
   Single-key QTouch짰 Touch Sensor IC
More results

Similar Description - AT42QT1011

ManufacturerPart #DatasheetDescription
ATMEL Corporation
AT42QT1010 ATMEL-AT42QT1010 Datasheet
264Kb / 20P
   One-channel Touch Sensor IC
AT42QT1012 ATMEL-AT42QT1012_10 Datasheet
369Kb / 28P
   One-channel Toggle-mode Touch Sensor IC with Power Management Functions
Asahi Kasei Microsystem...
AK4160 AKM-AK4160 Datasheet
448Kb / 40P
   16-channel Capacitive Touch Sensor IC
AK4161 AKM-AK4161 Datasheet
415Kb / 12P
   6-channel Capacitive Touch Sensor IC
AK4161EN AKM-AK4161EN Datasheet
617Kb / 11P
   6-channel Capacitive Touch Sensor IC
ATMEL Corporation
AT42QT2120 ATMEL-AT42QT2120 Datasheet
583Kb / 46P
   QTouch 12-channel Touch Sensor IC
AT42QT1060 ATMEL-AT42QT1060_14 Datasheet
456Kb / 36P
   Six-channel QTouch Touch Sensor IC
AT42QT1070 ATMEL-AT42QT1070 Datasheet
423Kb / 34P
   Seven-channel QTouch짰 Touch Sensor IC
AT42QT1070 ATMEL-AT42QT1070_14 Datasheet
423Kb / 34P
   Seven-channel QTouch Touch Sensor IC
AT42QT2100-AU ATMEL-AT42QT2100-AU Datasheet
478Kb / 44P
   QTouch Touch Sensor IC
More results

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Datasheet Download

Go To PDF Page

Link URL

Privacy Policy
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com

Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com