Texas Instruments 3138 155 232931 - Manual (Page 22)

CC2420
SWRS041B Page 22 of 89
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QLP48
7x7
CC2420
RF
Transceiver
DSUB_CORE DSUB_PADS
AVDD_ADC DVDD_ADC
DGUARD
AVDD_IF2
DGND_GUAR
D
AVDD_RF2
DGN
D
NC NC
R
ESETn
RF_P
RF_N
AVDD_PRE
AVDD_RF1
TXRX_SWITCH
AVDD_VCO
VCO_GUARD
AVDD_SW
GND
GND
NC
NC
VREG_O
UT
AVDD_C
HP
R_BIAS
AVDD_I
F1
VREG_
IN
VREG_EN
XOSC16_
Q1
XOSC16_
Q2
ATES
T2
ATES
T1 NC
A
VDD_XOSC16
CSn
FIFO
FIFOP
CCA
SFD
DVDD1.8
SCLK
DVDD_RAM
SI
SO
DVDD3.3
NC
XTAL
C391 C381
D
ig
ital In
te
rf
ac
e
R451
3.3 V
Power
supply
L61
C42
Folded
dipole
antenna
L71
Figure 5. Suggested application circuit with differential antenna (folded dipole)