Rainbow Electronics ATAR862-3 - Manual (Page 10)

10
ATAR862-3
4556B–4BMCU–02/03
Figure 7. FSK Application Circuit
CLK
PA_ENABLE
ANT2
ANT1
ENABLE
GND
VS
XTAL
21
22
23
24 1
2
3
4
VCO
LF
CP
PFD
f
32
XTO
PLL
PA
f
4
Power up/down
C3
VS
C1
VS
C4
Loop
Antenna
L1
XTAL
C2
C5
9
11
6
5
8
7
10
12
BP20/NTE
VDD
BP42/T2O
VSS
15
16
17
13
19
20
18
17
OSC1
OSC2
BP60/T3O
BP50/INT6
BP63/T3I
BP23
NRESET
BP41/T2I/VMI
BP43/SD/
INT3
BP52/INT1
BP53/INT1
BP40/SC/INT3
VS
S1
S2
S3