CC2420 Chipcon AS, CC2420 Datasheet - Page 18

• Manufacturer Part Number: CC2420
• Description: 2.4 GHz RF Transceiver for IEEE 802.15.4 and ZigBee
• Manufacturer: Chipcon AS

Chipcon AS SmartRF® CC2420 Preliminary Datasheet (rev 1.0), 2003-11-17
(50 Ohm)
Antenna
Figure 3. Typical application circuit with discrete balun for single-ended operation
C62
Ref
C42
C61
C62
C71
C81
C381
C391
L61
L62
L81
R451
XTAL
C61
C71
L81
C81
L62
L61
Table 1. Overview of external components
Description
Voltage regulator load capacitance
Discrete balun and match, see page 51
DC block to antenna and match
Front-end bias decoupling and match, see page 51
Discrete balun and match, see page 51
16MHz crystal load capacitor, see page 51
16MHz crystal load capacitor, see page 51
DC bias and match, see page 51
DC bias and match, see page 51
Discrete balun and match, see page 51
Precision resistor for current reference generator
16MHz crystal, see page 51
1
2
3
4
5
6
7
8
9
10
11
12
VCO_GUARD
AVDD_VCO
AVDD_PRE
AVDD_RF1
GND
RF_P
TXRX_SWITCH
RF_N
GND
AVDD_SW
NC
NC
R451
SmartRF
Transceiver
supply
Power
3.3 V
CC2420
QLP48
7x7
RF
C42
C391
XTAL
®
C381
DVDD_RAM
DVDD1.8
DVDD3.3
CC2420
FIFOP
SCLK
FIFO
CSn
CCA
SFD
NC
SO
SI
36
35
34
33
32
31
30
29
28
27
26
25
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