Texas Instruments 3138 155 232931 - Manual (Page 21)

CC2420
SWRS041B Page 21 of 89
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QLP48
7x7
CC2420
RF
Transceiver
DSUB_
CORE
DSUB_
PADS
AVDD
_ADC
DVDD
_ADC
DG
UARD
AVDD
_IF2
D
GND_G
UARD
AVDD
_RF2 D
GND
NC NC
RES
ETn
RF_P
RF_N
AVDD_PRE
AVDD_RF1
TXRX_SWITCH
AVDD_VCO
VCO_GUARD
AVDD_SW
GND
GND
NC
NC
V
REG_
OUT
A
VDD_
CHP
R_
BIAS
A
VDD_
IF1
VREG
_IN
VRE
G_EN
XO
SC16
_Q1
XO
SC16
_Q2
ATE
ST2
ATE
ST1
NC
AV
DD_XO
SC16
CSn
FIFO
FIFOP
CCA
SFD
DVDD1.8
SCLK
DVDD_RAM
SI
SO
DVDD3.3
NC
XTAL
C391 C381
C61
C71 C62
Antenna
(50 Ohm)
L81
C81
L62
D
ig
ita
l In
te
rf
ac
e
R451
3.3 V
Power
supply
L61
C42
Figure 4. Typical application circuit with discrete balun for single-ended operation