qt1101 Quantum Research Group, qt1101 Datasheet - Page 5

• Manufacturer Part Number: qt1101
• Description: 10 Key Qtouch? Sensor Ic
• Manufacturer: Quantum Research Group

SMR resistor installed between SNS6K, SNS7
Table 1.6
AKS Resistor Options
Table 1.7
Functions in Simplified Mode
Lq
KEY 3
KEY 4
KEY 5
KEY 6
KEY 7
KEY 8
KEY 9
DETECT OUT
Vunreg
R
R
R
R
R
LP IN
R
R
SNS3
SNS4
SNS5
SNS6
SNS8
10K
10K
10K
10K
SNS7
10K
10K
SNS9
10K
4.7nF
4.7nF
4.7nF
4.7nF
4.7nF
4.7nF
4.7nF
4.7uF
Figure 1.2 Connection Diagram - Simplified Mode (32-QFN Package)
C
C
C
C
C
C
C
S3
S4
S5
S6
S7
S8
S9
R
R
R
R
R
R
R
S7
S9
S3
S4
S5
S6
S8
Voltage Reg
2.2K
2.2K
2.2K
2.2K
2.2K
2.2K
2.2K
+2.8 ~ +5V
SYNC/LP pin
Max on-duration delay
Detect Pin
SMR
AKS_0
4.7uF
Vdd
Vss
1M
15
12
13
16
17
18
19
20
21
25
26
27
28
23
24
*100nF
SNS3
SNS3K
SNS4
SNS4K
SNS5
SNS5K
SNS6
SNS6K
SNS7
SNS7K
SNS8
SNS8K
SNS9
SNS9K
SYNC/LP
DETECT
AKS MODE
On, global
VDD
VDD
Off
3
QT1101
32-QFN
22
VSS
200ms LP function; sync not available
60 seconds
Push-pull, active high
5
/RST
/CHANGE
2
SNS2K
SNS1K
SNS0K
SNS2
SNS1
SNS0
OSC
N.C.
N.C.
1W
RX
SS
FAST-DETECT
Enabled
11
10
9
8
7
6
4
1
32
31
30
29
5
Off
No Spread-spectrum:
Replace Css with 100K resistor
1M
100K
100K
100K
Rb1
Rb2
VDD
AKS_0
100nF
Vdd / Vss
Css
Vdd
Vdd
Vdd
2.2K
2.2K
2.2K
R
R
R
S0
S1
S2
Recommended Rb1, Rb2 Values
QT1101 R4.06/0806
4.7nF
4.7nF
4.7nF
Vdd Range
2.8
3.0 ~ 3.59V
Vdd Range
2.8 ~ 2.99V
3.0 ~ 3.59V
C
C
With Spread-Spectrum
C
S0
S1
S2
3.6 ~ 5V
No Spread-Spectrum
3.6 ~ 5V
~ 2.99V
2W DATA
DATA
/CHANGE
R
R
dni = do not install
R
10K
10K
10K
SNS1
SNS2
SNS0
12K
12K
15K
Rb1
Rb1
15K
18K
20K
Rb2
27K
22K
27K
Rb2
KEY 2
KEY 1
KEY 0
dni
dni
dni