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CC2420
SWRS041B Page 15 of 89
7 Pin Assignment
VREG_OUT
AVDD_CHP
QLP48
7x7
1
2
3
4
5
6
7
8
9
10
11
12
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
CC2420
R_BIAS
AVDD_IF1
VREG_IN
VREG_EN
XOSC16_Q1
XOSC16_Q2
ATEST2
ATEST1
NC
RF_P
RF_N
AVDD_PRE
AVDD_RF1
TXRX_SWITCH
AVDD_VCO
VCO_GUARD
AVDD_SW
GND
GND
NC
NC
DSUB_CORE
DSUB_PADS
AVDD_ADC
DVDD_ADC
DGUARD
AVDD_IF2
DGND_GUARD
AVDD_RF2
DGND
NC
CSn
FIFO
FIFOP
CCA
SFD
DVDD1.8
SCLK
DVDD_RAM
SI
SO
DVDD3.3
NC
AVDD_XOSC16
NC
AGND
Exposed die
attach pad
RESETn
Figure 1.
CC2420
Pinout – Top View
Pin Pin Name Pin type Pin Description
-
AGND
Ground (analog) Exposed die attach pad. Must be connected to solid ground
plane
1
VCO_GUARD
Power (analog) Connection of guard ring for VCO (to AVDD) shielding
2
AVDD_VCO
Power (analog) 1.8 V Power supply for VCO
3
AVDD_PRE
Power (analog) 1.8 V Power supply for Prescaler
4
AVDD_RF1
Power (analog) 1.8 V Power supply for RF front-end
5
GND
Ground (analog) Grounded pin for RF shielding
6
RF_P
RF I/O Positive RF input/output signal to LNA/from PA in
receive/transmit mode
7
TXRX_SWITCH
Power (analog) Common supply connection for integrated RF front-end. Must
be connected to RF_P and RF_N externally through a DC
path
8
RF_N
RF I/O Negative RF input/output signal to LNA/from PA in
receive/transmit mode
9
GND
Ground (analog) Grounded pin for RF shielding
10
AVDD_SW
Power (analog) 1.8 V Power supply for LNA / PA switch
11
NC
- Not Connected
12
NC
- Not Connected
13
NC
- Not Connected
14
AVDD_RF2
Power (analog) 1.8 V Power supply for receive and transmit mixers
15
AVDD_IF2
Power (analog) 1.8 V Power supply for transmit / receive IF chain