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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_GUARD
AVDD_RF2
DGND
NC
NC
RESETn
RF_P
RF_N
AVDD_PRE
AVDD_RF1
TXRX_SWITCH
AVDD_VCO
VCO_GUARD
AVDD_SW
GND
GND
NC
NC
VREG_OUT
AVDD_CHP
R_BIAS
AVDD_IF1
VREG_IN
VREG_EN
XOSC16_Q1
XOSC16_Q2
ATEST2
ATEST1
NC
AVDD_XOSC16
CSn
FIFO
FIFOP
CCA
SFD
DVDD1.8
SCLK
DVDD_RAM
SI
SO
DVDD3.3
NC
XTAL
C391 C381
Digital Interface
R451
3.3 V
Power
supply
L61
C42
Folded
dipole
antenna
L71
Figure 5. Suggested application circuit with differential antenna (folded dipole)