Figure 1.1 Connection Diagram - Full Options (32-QFN Package)
VDD
+2.8 ~ +5V
Voltage Reg
Vunreg
4.7uF
4.7uF
*100nF
3
2
RSNS2
2.2K
VDD
/RST
4.7nF
11
10
9
12
13
SNS2K
SNS2
SNS3
KEY 2
KEY 1
KEY 0
MOD_0
Vdd / Vss
1M
1M
1M
RSNS3
MOD_1
Vdd / Vss
RS2
4.7nF
CS3
RS3
10K
1M
CS2
4.7nF
CS1
4.7nF
SNS3K
SNS4
KEY 3
KEY 4
KEY 5
KEY 6
KEY 7
KEY 8
KEY 9
RSNS1
2.2K
2.2K
RS1
10K
SNS1K
SNS1
AKS_1
Vdd / Vss
RSNS4
4.7nF
4.7nF
4.7nF
RS4
10K
CS4
8
15
16
17
18
19
20
21
25
26
27
28
SNS4K
SNS5
RSNS0
2.2K
2.2K
RS0
10K
7
SNS0K
SNS0
AKS_0
Vdd / Vss
OUT_D
Vdd / Vss
RSNS5
CS5
RS5
10K
1M
1M
1M
6
CS0
SNS5K
SNS6
2.2K
2.2K
10K
VDD
RSNS6
SL_0
Vdd / Vss
Recommended Rb1, Rb2 Values
CS6
RS6
QT1101
32-QFN
SNS6K
SNS7
With Spread-Spectrum
Vdd Range
2.8 ~ 2.99V 12K 27K
3.0 ~ 3.59V 12K 22K
3.6 ~ 5V 15K 27K
2.2K
10K
Rb1 Rb2
Rb1
Rb2
RSNS7 4.7nF
SL_1
Vdd / Vss
RS7
CS7
SNS7K
SNS8
4
2.2K
OSC
10K
RSNS8
4.7nF
CS8
RS8
No Spread-Spectrum
Vdd Range
2.8 ~ 2.99V 15K
3.0 ~ 3.59V 18K
3.6 ~ 5V 20K
SNS8K
SNS9
Rb1 Rb2
2.2K
10K
dni
dni
dni
RSNS9 4.7nF
RS9
CS9
Css
SNS9K
1
SS
10K
100nF
dni = do not install
No Spread-spectrum:
Replace Css with 100K resistor
100K
Vdd
32
31
30
29
RX
1W
2W DATA
DATA
100K
100K
23
Vdd
Vdd
SYNC or LP
SYNC/LP
DETECT
Pullup not required for push-pull mode
See Detect pin mode table below
/CHANGE
N.C.
/CHANGE
100K
Vdd
24
DETECT OUT
5
N.C.
VSS
22
Table 1.2
AKS / Fast-Detect Options
AKS_1
Vss
Vss
Vdd
Vdd
AKS_0
Vss
Vdd
Vss
Vdd
AKS MODE
Off
Off
On, in 3 groups
On, global
FAST-DETECT
Off
Enabled
Off
Off
Table 1.3
Max On-Duration
MOD_1
Vss
Vss
MOD_0
Vss
Vdd
MAX ON-DURATION MODE
10 seconds to recalibrate
60 seconds to recalibrate
Infinite (disabled)
Vdd
Vss
Vdd
Vdd
(reserved)
Table 1.4
Detect Pin Drive
OUT_D
Vss
Vdd
DETECT PIN MODE
Open drain, active low
Push-pull, active high
Table 1.5
SYNC/LP Function
SL_1
Vss
Vss
Vdd
Vdd
SL_0
Vss
Vdd
Vss
SYNC/LP PIN MODE
Sync
LP mode: 120ms response time
LP mode: 200ms response time
LP mode: 360ms response time
Vdd
Lq
4
QT1101 R4.06/0806
QUANTUM [ QUANTUM RESEARCH GROUP ]
