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| 型號(hào)： | 1200 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類(lèi)： | 無(wú)繩電話(huà)/電話(huà) |
| 英文描述： | TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, QCC20 |
| 封裝： | 4 X 4 MM, ROHS COMPLIANT, QLP-20 |
| 文件頁(yè)數(shù)： | 7/70頁(yè) |
| 文件大小： | 841K |
| 代理商： | 1200 |
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Chipcon
SmartRF CC1100
Chipcon AS
SmartRF
CC1100 Preliminary Data Sheet (rev. 1.0) 2005-04-25
Page 15 of 68
Crystal
The crystal oscillator uses an external crystal
with two loading capacitors (C81 and C101).
Additional filtering
Additional external components (e.g. an RF
SAW filter) may be used in order to improve
the performance in specific applications.
Power supply decoupling
The power supply must be properly decoupled
close to the supply pins. Note that decoupling
capacitors are not shown in the application
circuit. The placement and the size of the
decoupling capacitors are very important to
achieve the optimum performance. Chipcon
provides a reference design that should be
followed closely.
Component
Description
C51
100nF decoupling capacitor for on-chip voltage regulator to digital part
C81/C101
C121/C131
RF balun/matching capacitors
C122/C123
RF LC filter/matching capacitors
C124
RF balun DC blocking capacitor
C125
RF LC filter DC blocking capacitor (only needed if there is a DC path in the antenna)
L121/L131
RF balun/matching inductors (inexpensive multi-layer type)
L122/L123
RF LC filter/matching filter inductor (inexpensive multi-layer type)
R171
56k resistor for internal bias current reference
XTAL
Table 14: Overview of external components (excluding supply decoupling capacitors)
Antenna
(50 Ohm)
D
ig
ita
lIn
te
fa
ce
1.8V-3.6V power supply
6GD
O0
7CS
n
8XO
SC
_Q
1
9AVD
D
10
X
O
S
C
_Q
2
SI
2
0
G
ND
19
DG
UA
RD
18
R
B
IAS
1
7
G
ND
16
1 SCLK
2 SO
(GDO1)
3 GDO2
4 DVDD
5 DCOUPL
AVDD 15
AVDD 14
RF_N 13
RF_P 12
AVDD 11
XTAL
L122
L123
C122
C123
C125
R171
C81
C101
C51
CSn
GDO0
(optional)
GDO2
(optional)
SO
(GDO1)
SCLK
SI
CC1100
DIE ATTACH PAD:
C131
C121
L121
L131
C124
Figure 3: Typical application and evaluation circuit (excluding supply decoupling capacitors)
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