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CC1010-RTY1 데이터시트(PDF) 120 Page - Texas Instruments

부품명 CC1010-RTY1
상세설명  Single Chip Very Low Power RF Transceiver with 8051-Compatible Microcontroller
PDF  150 Pages
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제조업체  TI2 [Texas Instruments]
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CC1010-RTY1 데이터시트(HTML) 120 Page - Texas Instruments

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CC1010
SWRS047A
Page 120 of 146
17.18 Input / Output Matching
A
few
passive
external
components
combined with the internal T/R switch
circuitry ensures match in both RX and TX
mode. The matching network is shown in
Figure 36. Component values for various
frequencies
are
given
in
Table
28.
Component values for other frequencies
can be found using the SmartRF
® Studio
software.
The register MATCH should initially be set
as shown in the register description below.
The MATCH register controls a capacitor
array located at the RF_OUT pin. The
register can be used to fine-tune the
impedance match for a particular layout
and component selection. The tuning can
be accomplished by stepping the register
values until optimum sensitivity and output
power is reached.
RF_IN
RF_OUT
TO ANTENNA
CC1010
L51
C51
C52
AVDD=3V
L42
C41
Figure 36. Input/output matching network
MATCH (0xDC) - Match Capacitor Array Control Register
Bit
Name
R/W
Reset value
Description
7:3
RX_MATCH
(3:0)
R/W
0000
Selects matching capacitor array value for RX, step size is
0.4 pF
0000: Use for RF frequency > 500 MHz
1100: Use for RF frequency < 500 MHz
3:0
TX_MATCH
(3:0)
R/W
0000
Selects matching capacitor array value for TX, step size is
0.4 pF. Recommended setting is 0000



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