CC2420 Datasheet, PDF (14/87 Pages) List of Unclassifed Manufacturers – 2.4 GHz IEEE 802.15.4 / ZigBee-ready RF Transceiver

Pin Assignment
SmartRF ^® CC2420
VCO_GUARD 1
AVDD_VCO 2
AVDD_PRE 3
AVDD_RF1 ⁴
GND 5
RF_P 6
TXRX_SWITCH ⁷
RF_N 8
GND 9
AVDD_SW 10
NC 11
NC 12
CC2420 QLP48
7x7
36 NC
35 DVDD_RAM
34 SO
33 SI
32 SCLK
31 CSn
30 FIFO
29 FIFOP
28 CCA
27 SFD
26 DVDD1.8
25 DVDD3.3
AGND
Exposed die
attach pad
Figure 1. CC2420 Pinout – Top View
Pin Pin Name
-
AGND
1
VCO_GUARD
2
AVDD_VCO
3
AVDD_PRE
4
AVDD_RF1
5
GND
6
RF_P
7
TXRX_SWITCH
8
RF_N
9
GND
10
AVDD_SW
11
NC
12
NC
13
NC
Pin type
Ground (analog)
Power (analog)
Power (analog)
Power (analog)
Power (analog)
Ground (analog)
RF I/O
Power (analog)
RF I/O
Ground (analog)
Power (analog)
-
-
-
Pin Description
Exposed die attach pad. Must be connected to solid ground
plane
Connection of guard ring for VCO (to AVDD) shielding
1.8 V Power supply for VCO
1.8 V Power supply for Prescaler
1.8 V Power supply for RF front-end
Grounded pin for RF shielding
Positive RF input/output signal to LNA/from PA in
receive/transmit mode
Common supply connection for integrated RF front-end. Must
be connected to RF_P and RF_N externally through a DC
path
Negative RF input/output signal to LNA/from PA in
receive/transmit mode
Grounded pin for RF shielding
1.8 V Power supply for LNA / PA switch
Not Connect
Not Connect
Not Connect
Chipcon AS SmartRF^® CC2420 Preliminary Datasheet (rev 1.2), 2004-06-09
Page 14 of 87