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PIN DESCRIPTION
PIN #
PIN Name
SMD Pinned
1
3
1
13
20
2
2
RF/ANT Out
5
3
6
4
CS1/SS CLOCK
7
5
CS2/SS DATA
8
6
9
7
10
8
GND/MODE
9
11
12
10
Analog In/Data In
4
14-19
N/C
21-24
Figure 9: Pin Functions and Equivalent Circuits
Page 4
Equivalent CTK
GND
RF
Out
CS0
CS0
CS1
CS2
CTS
CTS
Out
V
IN
430K
PDN
PDN
VCC
Mode
100K
510K
50
25K
25K
25K
25K
160K
20pF
SMD (Only)
Description
Ground
50 Ohm RF Output
Channel Select 0
Channel Select 1/Serial Select Clock
Channel Select 2 /Serial Select Data
Clear-to-Send
Output
Power Down
(Active Low)
Voltage Input 2.8-16V
Ground/Mode
Digital/Analog Input
See text "Inputting Digital Data"
No Connection
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