7
T5754
4511D–RKE–08/02
Figure 7. FSK Application Circuit
CLK
PA_ENABLE
ANT2
ANT1
ENABLE
GND
VS
XTAL
1
2
3
4 5
6
7
8
VCO
LF
CP
PFD
f
32
XTO
PLL
PA
f
4
Power up / down
M4xCx9x
C3
VS
C1
VS
C4
Loop
Antenna
BPXY
OSC1
7
BPXY
BPXY
VDD
1
VS
L1
XTAL
C2
S1
S2
BP42/T2O
18
C5
BPXY
VSS
20
T5754
