qt1103 Quantum Research Group, qt1103 Datasheet - Page 6

• Manufacturer Part Number: qt1103
• Description: Qtouch? 10-key Sensor Ic
• Manufacturer: Quantum Research Group

Table 1.2
AKS / Fast-Detect Options
Table 1.3
Max On-Duration
Table 1.4
Detect Pin Drive
Table 1.5
SYNC/LP Function
Lq
KEY 4
KEY 3
KEY 5
KEY 6
KEY 8
KEY 7
KEY 9
DETECT OUT
SYNC or LP
RESET IN
Vunreg
Pull-up not required for push-pull mode
See Detect pin mode table
Figure 1.1 Connection Diagram - Full Options (32-QFN Package)
OUT_D
SL_0
MOD_1
V
V
V
SL_1
V
DD
DD
DD
DD
Keep these parts
close to the IC
/ V
/ V
/ V
/ V
SS
SS
SS
SS
R
R
R
R
R
R
R
SNS4
1M
SNS6
1M
SNS3
SNS5
SNS8
1M
SNS7
SNS9
Voltage Reg
1M
Vdd
MOD_1
OUT_D
AKS_1
SL_1
Vdd
Vdd
Vdd
Vdd
Vdd
Vdd
Vdd
Vss
Vss
Vss
Vss
Vss
Vss
Vss
100K
C
C
C
C
C
C
C
S3
S4
S5
S6
S7
S8
S9
DETECT PIN MODE
Open drain, active low
Push-pull, active high
MOD_0
*100nF
AKS_0
12
13
14
15
16
17
18
19
20
25
26
27
28
21
23
24
SL_0
2
Vss
Vdd
Vss
Vdd
Vss
Vdd
Vss
Vdd
Vss
Vdd
Vss
Vdd
SNS4
SNS6
SNS3
SNS4K
SNS5
SNS6K
SYNC/LP
DETECT
SNS3K
SNS5K
SNS9
SNS7
SNS7K
/RST
SNS8
SNS8K
SNS9K
VDD
QT1103
32-QFN
6
AKS MODE
Off
Off
On, in 3 groups
On, global
MAX ON-DURATION MODE
10 seconds to recalibrate
60 seconds to recalibrate
Infinite (disabled)
(reserved)
SYNC/LP PIN MODE
Sync
LP mode: 70ms response time
LP mode: 110ms response time
LP mode: 190ms response time
22
VDD
VSS
3
*Note: One bypass capacitor to be tightly wired between
Vdd and Vss. Follow regulator manufacturer’s
recommendations for input and output capacitors.
/CHANGE
SNS1K
SNS0K
SNS2K
SNS2
SNS1
SNS0
OSC
N.C.
N.C.
RX
1W
SS
10
8
9
7
6
32
29
11
5
4
31
30
1
FAST-DETECT
Off
Enabled
Off
Off
100K
100K
100K
Rb1
Rb2
Keep these parts
close to the IC
C
C
C
VDD
S1
S2
S0
Css
1M
1M
1M
Vdd
Vdd
Vdd
R
R
R
SNS2
SNS1
SNS0
QT1103_3R0.03_0607
V
V
V
MOD_0
AKS_1
AKS_0
DD
DD
DD
/
/
/
V
V
V
Recommended Rb1, Rb2 Value
SS
SS
SS
2W DATA
DATA
/CHANGE
2.8 ~ 2.99V
3.0 ~ 3.59V
Vdd Range
Vdd Range
2.8 ~ 2.99V
3.0 ~ 3.59V
With Spread-Spectrum
3.6 ~ 5V
No Spread-Spectrum
3.6 ~ 5V
dni = do not install
KEY 0
KEY 1
KEY 2
12K
12K
15K
Rb1
Rb1
15K
18K
20K
Rb2
27K
22K
27K
Rb2
dni
dni
dni