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PDF QT1101 Data sheet ( Hoja de datos )
| Número de pieza | QT1101 | |
| Descripción | 10 KEY QTOUCH SENSOR IC | |
| Fabricantes | QUANTUM | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de QT1101 (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
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lQ
QT1101
10 KEY QTOUCH™ SENSOR IC
" Patented charge-transfer (‘QT’) design
" Ten independent QT sensing fields (keys)
" 2.8V ~ 5.5V single supply operation
" 40µA current typ @ 3V in 360ms LP mode
" 100% autocal for life - no adjustments required
" Serial one or two wire interface with auto baud rate
" Fully debounced results
" Patented AKS™ Adjacent Key Suppression
" Spread spectrum bursts for superior noise rejection
" Sync pin for excellent LF noise rejection
" ‘Fast mode’ for use in slider type applications
" RoHS compliant 32-QFN, 48-SSOP packages
24 23 22 21 20 19 18 17
SNS8
SNS8K
SNS9
SNS9K
N.C.
/CHANGE
1W
RX
25
26
27
28
29
30
31
32
QT1101
32-QFN
16 SNS5
15 SNS4K
14 SNS4
13 SNS3K
12 SNS3
11 SNS2K
10 SNS2
9 SNS1K
1 234 56 78
APPLICATIONS
! MP3 players
! Mobile phones
! PC peripherals
! Television controls
! Pointing devices
! Remote controls
QT1101 charge-transfer (‘QT’) QTouchTM IC is a self-contained, patented digital controller capable of detecting near-proximity or touch
on up to ten electrodes. It allows electrodes to project independent sense fields through any dielectric such as glass or plastic. This
capability coupled with its continuous self-calibration feature can lead to entirely new product concepts, adding high value to product
designs. The devices are designed specifically for human interfaces, like control panels, appliances, gaming devices, lighting controls,
or anywhere a mechanical switch or button may be found; they may also be used for some material sensing and control applications.
Each of the channels operates independently of the others, and each can be tuned for a unique sensitivity level by simply changing a
corresponding external Cs capacitor.
Patented AKS™ Adjacent Key Suppression suppresses touch from weaker responding keys and allows only a dominant key to detect,
for example to solve the problem of large fingers on tightly spaced keys.
Spread spectrum burst technology provides superior noise rejection. These devices also have a SYNC/LP pin which allows for
synchronization with additional similar parts and/or to an external source to suppress interference, or, an LP (low power) mode which
conserves power.
By using the charge transfer principle, this device delivers a level of performance clearly superior to older technologies yet is highly
cost-effective.
TA
-400C to +850C
LQ
AVAILABLE OPTIONS
32-QFN
QT1101-ISG
48-SSOP
QT1101-IS48G
CCopyright © 2005-2006 QRG Ltd
QT1101 R4.06/0806
1 page  
Figure 1.2 Connection Diagram - Simplified Mode (32-QFN Package)
SMR resistor installed between SNS6K, SNS7
Vunreg
4.7uF
+2.8 ~ +5V
Voltage Reg
4.7uF
VDD
*100nF
KEY 3
KEY 4
KEY 5
KEY 6
KEY 7
KEY 8
KEY 9
RSNS3 4.7nF
10K
RSNS4 4.7nF
10K
RSNS5 4.7nF
10K
RSNS6 4.7nF
10K
RSNS7 4.7nF
10K
RSNS8 4.7nF
10K
RSNS9 4.7nF
10K
RS3
CS3 2.2K
RS4
CS4 2.2K
RS5
CS5 2.2K
RS6
CS6 2.2K
RS7
SMR
CS7 2.2K
RS8
CS8 2.2K
RS9
CS9 2.2K
LP IN
DETECT OUT
32
VDD
12 SNS3
13 SNS3K
SNS4
15 SNS4K
16 SNS5
17 SNS5K
/RST
SNS2K 11
SNS2 10
SNS1K 9
SNS1 8
SNS0K 7
SNS0 6
1M
AKS_0
Vdd / Vss
RS2
2.2K
RS1
2.2K
RS0
4.7nF
RSNS2
CS2
4.7nF
10K
RSNS1
CS1
4.7nF
10K
RSNS0
10K
CS0
KEY 2
KEY 1
KEY 0
18 SNS6
19 SNS6K
1M 20 SNS7
21 SNS7K
25 SNS8
26 SNS8K
QT1101
32-QFN
OSC 4
VDD
Rb1
Rb2
2.2K
Recommended Rb1, Rb2 Values
With Spread-Spectrum
Vdd Range Rb1 Rb2
2.8 ~ 2.99V 12K 27K
3.0 ~ 3.59V 12K 22K
3.6 ~ 5V 15K 27K
No Spread-Spectrum
27 SNS9
Vdd Range Rb1 Rb2
2.8 ~ 2.99V 15K dni
28 SNS9K
SS 1
Css
3.0 ~ 3.59V 18K dni
3.6 ~ 5V 20K dni
100nF
No Spread-spectrum:
dni = do not install
Replace Css with 100K resistor
23
SYNC/LP
RX 32
1W 31
/CHANGE 30
100K
100K
100K
Vdd
Vdd
Vdd
2W DATA
DATA
/CHANGE
24 DETECT
N.C. 29
N.C. 5
VSS
22
Table 1.6
AKS Resistor Options
AKS_0
Vss
Vdd
AKS MODE
Off
On, global
FAST-DETECT
Enabled
Off
Table 1.7
Functions in Simplified Mode
SYNC/LP pin
Max on-duration delay
Detect Pin
200ms LP function; sync not available
60 seconds
Push-pull, active high
Lq
5
QT1101 R4.06/0806
5 Page 
4.5 Signal Processing
Vdd = 5.0V, Ta = recommended, Cx = 5pF, Cs = 4.7nF, 2µs QT Pulses
Description
Value
Units Notes
Detection threshold
Detection hysteresis
Anti-detection threshold
Anti-detection recalibration delay
Detect Integrator filter, normal mode
Detect Integrator filter, Fast mode
Max On-Duration
10
2
6
2
6
2
10, 60, inf
counts
counts
counts
secs
samples
samples
secs
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
Normal drift compensation rate
Anti drift compensation rate
2,000
500
ms/level Towards increasing Cx load
ms/level Towards decreasing Cx load
Lq
11
QT1101 R4.06/0806
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet QT1101.PDF ] | |
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