|
|
PDF QT1080 Data sheet ( Hoja de datos )
| Número de pieza | QT1080 | |
| Descripción | 8 KEY QTOUCH SENSOR IC | |
| Fabricantes | QUANTUM | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de QT1080 (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
|
No Preview Available !
www.DataSheet4U.com
lQ
QT1080
8 KEY QTOUCH™ SENSOR IC
" Eight completely independent QT touch sensing fields
" Designed for low-power portable applications
" 100% autocal for life - no adjustments required
" Direct outputs - either encoded or ‘per key’
" Fully debounced results
" 2.8V to 5.0V single supply operation
" 45µA current typ @ 3V in 360ms LP mode
" AKS™ Adjacent Key Suppression
" Spread spectrum bursts for superior noise rejection
" Sync pin for excellent LF noise rejection
" 10ms ‘Fast mode’ for use in slider applications
" RoHS compliant packages: 32-QFN and 48-SSOP
24 23 22 21 20 19 18 17
OUT_0
OUT_1
OUT_2
OUT_3
OUT_4
OUT_5
OUT_6
OUT_7
25
26
27
28
29
30
31
32
QT1080
32-QFN
16 SNS5
15 SNS4K
14 SNS4
13 SNS3K
12 SNS3
11 SNS2K
10 SNS2
9 SN1K
1 234 56 78
APPLICATIONS
! MP3 players
! Mobile phones
! PC peripherals
! Television controls
! Pointing devices
! Remote controls
QT1080 charge-transfer (’QT’) QTouch IC is a self-contained digital controller capable of detecting near-proximity or touch on
up to eight 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.
AKS™ Adjacent Key Suppression (patent pending) suppresses touch from weaker responding keys and only allows 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, a Low Power (LP) 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.
This part is available in both 32-QFN and 48-SSOP RoHS compliant packages.
TA
-40ºC to +85ºC
LQ
AVAILABLE OPTIONS
32-QFN
QT1080-ISG
48-SSOP
QT1080-IS48G
Copyright © 2004-2006 QRG Ltd
QT1080 R11.06/0806
1 page  
Figure 1.1 Connection Diagram - Full Options; Shown for 32-QFN Package
Vunreg
*4.7uF
+2.8 ~ +5V
Voltage Reg
*4.7uF
VDD
*100nF
KEY 3
KEY 4
KEY 5
KEY 6
KEY 7
RSNS3 4.7nF
10K
RSNS4 4.7nF
10K
RSNS5 4.7nF
10K
RSNS6 4.7nF
10K
RSNS7 4.7nF
10K
2.2K
CS3
RS3
MOD_1
Vdd / Vss
2.2K
POL
CS4 RS4 Vdd / Vss
2.2K
OUT_D
CS5 RS5 Vdd / Vss
2.2K
CS6
RS6
SL_0
Vdd / Vss
2.2K
CS7 RS7
SL_1
Vdd / Vss
SYNC or LP IN
DETECT OUT
32
VDD /RST
12 SNS3
SNS2K 11 1M MOD_0
1M 13 SNS3K
SNS2 10
Vdd / Vss
4.7nF
RSNS2
RS2 CS2 10K
SNS4
1M 15 SNS4K
SNS1K 9
SNS1 8
1M
AKS_1
Vdd / Vss
2.2K
RS1
4.7nF
RSNS1
CS1 10K
16 SNS5
1M 17 SNS5K
SNS0K 7
SNS0 6
1M
AKS_0
Vdd / Vss
2.2K
RS0
4.7nF
CS0
RSNS0
10K
KEY 2
KEY 1
KEY 0
18 SNS6
1M 19 SNS6K
20 SNS7
1M 21 SNS7K
VDD
Rb1
OSC 4
2.2K
Recommended Rb1, Rb2 Values
Vdd Range
2.8 ~ 3.59V
3.6 ~ 5V
Rb1
12K
15K
Rb2
22K
27K
QT1080
32-QFN
Rb2 The required value of spread-spectrum capacitor CSS
will vary according to the lengths of the acquire bursts,
see Section 3.2. A typical value of CSS is 100nF.
22
VSS
23
SYNC/LP
24 DETECT
SS 1
OUT_7 32
OUT_6 31
OUT_5 30
OUT_4 29
OUT_3 28
OUT_2 27
OUT_1 26
OUT_0 25
CSS
OUT_7
OUT_6
OUT_5
OUT_4
OUT_3
OUT_2
OUT_1
OUT_0
Table 1.2
AKS / Fast-Detect Options
Table 1.3
Max On-Duration
Table 1.4
Polarity and Output
Table 1.5
SYNC/LP Function
AKS_1
Vss
Vss
Vdd
Vdd
MOD_1
Vss
Vss
Vdd
Vdd
OUT_D
Vss
Vss
Vdd
Vdd
SL_1
Vss
Vss
Vdd
Vdd
AKS_0
Vss
Vdd
Vss
Vdd
AKS MODE
Off
Off
On, in 2 groups
On, global
FAST-DETECT
Off
Enabled
Off
Off
MOD_0
Vss
Vdd
Vss
Vdd
MAX ON-DURATION MODE
10 seconds (nom) to recalibrate
60 seconds (nom) to recalibrate
Infinite (disabled)
(reserved)
POL
Vss
Vdd
Vss
Vdd
OUT_n, DETECT PIN MODE
Binary coded, active high, push-pull
Direct, active low, open-drain
Direct, active high, push-pull
Direct, active low, push-pull
SL_0
Vss
Vdd
Vss
Vdd
SYNC/LP PIN MODE
Sync
LP mode: 110ms nom response time
LP mode: 200ms nom response time
LP mode: 360ms nom response time
lQ
5
QT1080 R11.06/0806
5 Page 
4.6 Idd Curves (Average)
Cx = 5pF, Cs = 4.7nF, Ta = 20oC, Spread spectrum circuit of Fig. 1.1.
QT1080 Idd (norm al m ode) m A
5.0
4.0
Rb1=15K
3.0 Rb2=27K
2.0
1.0 Rb1=12K
Rb2=22K
0.0
2.5 3 3.5 4 4.5 5 5.5
Vdd(V)
QT1080 Idd (110m s response) µA
500
400
Rb1=15K
300 Rb2=27K
200
Rb1=12K
100 Rb2=22K
0
2.5 3 3.5 4 4.5 5 5.5
Vdd(V)
QT1080 Idd (200m s response) µA
400
300
Rb1=15K
Rb2=27K
200
100 Rb1=12K
Rb2=22K
0
2.5 3 3.5 4 4.5 5 5.5
Vdd(V)
QT1080 Idd (360m s response) µA
300
250
200
Rb1=15K
150 Rb2=27K
100
Rb1=12K
50 Rb2=22K
0
2.5 3 3.5 4 4.5 5 5.5
Vdd(V)
Cx = 5pF, Cs = 4.7nF, Ta = 20oC, Rosc = 18KΩ; no spread spectrum circuit
QT1080 Idd (norm al m ode) m A
5.0
QT1080 Idd (110m s response) µA
400
4.0
300
3.0
200
2.0
100
1.0
0.0
2.5 3 3.5 4 4.5 5 5.5
Vdd(V)
0
2.5 3 3.5 4 4.5 5 5.5
Vdd(V)
QT1080 Idd (200m s response) µA
250
200
150
100
50
0
2.5 3 3.5 4 4.5 5 5.5
Vdd(V)
QT1080 Idd (360m s response) µA
125
100
75
50
25
0
2.5 3 3.5 4 4.5 5 5.5
Vdd(V)
lQ
11
QT1080 R11.06/0806
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet QT1080.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| QT1080 | 8 KEY QTOUCH SENSOR IC | QUANTUM |
| QT1081 | 8-KEY QTOUCH SENSOR IC |  Quantum |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |