CC2420
SWRS041B Page 21 of 89
35
34
33
32
31
30
29
28
27
26
25
36
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
1
2
3
4
5
6
7
8
9
10
11
12
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
C61
C71
C62
Antenna
(50 Ohm)
L81
C81
L62
Digital Interface
R451
3.3 V
Power
supply
L61
C42
Figure 4. Typical application circuit with discrete balun for single-ended operation