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| CC2480_11 Datasheet, PDF (21/48 Pages) Texas Instruments – Z-Accel 2.4 GHz ZigBee Processor | |||
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CC2480
8.5 Power supply decoupling and filtering
Proper power supply decoupling must be used
for optimum performance. The placement and
size of the decoupling capacitors and the
power supply filtering are very important to
achieve the best performance in an
application. TI provides a compact reference
design that should be followed very closely.
C441
C431
optional
XTAL2
C421
2.0 - 3.6V Power Supply
1 NC
2 NC
3 GPIO3
4 GPIO2
5 SRDY
6 MRDY
7 DVDD
8 GPIO1
9 GPIO0
10 RESET_N
11 CFG0
12 CFG1
Q C7LCx2P 474880
AVDD_RF2 36
AVDD_SW 35
RF_N 34
TXRX_SWITCH 33
RF_P 32
AVDD_RF1 31
AVDD_PRE 30
AVDD_VCO 29
VCO_GUARD 28
AVDD_CHP 27
RBIAS2 26
AVDD_IF1 25
Refer to the section PCB Layout
Recommendation on page 35.
Antenna
(50 Ohm)
L321
L331
L341 C341
λ/4
λ/4
Figure 5:
CC2480
Applicatio
n Circuit.
(Digital I/O
and ADC
interface
not
connected
).
Decouplin
g
capacitors
not shown.
or
R261
XTAL1
C191 C211
R221
C241
L331
L321
CC2480 Data Sheet SWRS074A
Page 21 of 43
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