CC2420 Datasheet, PDF (20/92 Pages) List of Unclassifed Manufacturers – 2.4 GHz IEEE 802.15.4 / ZigBee-ready RF Transceiver

Ref
C42
C61
C62
C71
C81
C381
C391
L61
L62
L71
L81
R451
XTAL
Description
Voltage regulator load capacitance
Balun and match
DC block to antenna and match
Front-end bias decoupling and match
Balun and match
16MHz crystal load capacitor, see page 53
16MHz crystal load capacitor, see page 53
DC bias and match
DC bias and match
DC bias and match
Balun and match
Precision resistor for current reference generator
16MHz crystal, see page 53
Table 1. Overview of external components
R451
3.3 V
Power
supply
C391 C381
C42
XTAL
CC2420
Antenna
(50 Ohm)
λ/2
λ/2
C81 L81
L71
L61
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
CC2420
Q7L_RxP74F8
Transceiver
NC 36
DVDD_RAM 35
SO 34
SI 33
SCLK 32
CSn 31
FIFO 30
FIFOP 29
CCA 28
SFD 27
DVDD1.8 26
DVDD3.3 25
Figure 3. Typical application circuit with transmission line balun for single-ended
operation
SWRS041B
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