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參數(shù)資料
| 型號： | TDK5100F |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 英文描述： | 434 MHz ASK/FSK Transmitter in 10-pin Package |
| 中文描述： | 434兆赫詢價/ FSK發(fā)射器采用10引腳封裝 |
| 文件頁數(shù)： | 28/35頁 |
| 文件大?。?/td> | 503K |
| 代理商： | TDK5100F |
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Applications
3 - 10
TDK 5100 F
Preliminary
Wireless Components
Target Specification, July 2003
As Figure 3-6 shows, detuning beyond the bandwidth of the matching circuit
results in an increase of the collector current of the power amplifier and in some
loss of output power. This diagram shows the data for the circuit of the test
board at the frequency of 434 MHz. The effective load resistance of this circuit
is R
L
= 550
, which is the optimum impedance for operation at 3 V. This will
lead to a dip of the collector current of approx. 40%.
tbd.wmf
Figure 3-6
Output power and collector current vs. frequency
C3, L2-C2 and C8 are the main matching components which are used to
transform the 50
load at the SMA-RF-connector to a higher impedance at the
PA-output (700
@ 3 V). L1 can be used for some finetuning of the resonant
frequency but should not become too small in order to keep its losses low.
The transformed impedance of 550+j0
at the PA-output-pin can be verified
with a network analyzer using the following measurement procedure:
1. Calibrate your network analyzer.
2. Connect some short, low-loss 50
cable to your network analyzer with an
open end on one side. Semirigid cable works best.
3. Use the
Port Extension
“
feature of your network analyzer to shift the refer-
ence plane of your network analyzer to the open end of the cable.
4. Connect the center-conductor of the cable to the solder pad of the pin
PA
“
of the IC. The outer conductor has to be grounded. Very short connections
have to be used. Do not remove the IC or any part of the matching-compo-
nents!
5. Screw a 50
dummy-load on the RF-I/O-SMA-connector
6. Be sure that your network analyzer is AC-coupled and turn on the power
supply of the IC. The TDK 5100 F must not be in Transmit-Mode.
7. Measure the S-parameter S11
T.b.d.
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PDF描述 |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TDK5100F_08 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:434 MHz ASK/FSK Transmitter in 10-pin Package |
| TDK5100FDEMOBOARD | 制造商:Infineon Technologies AG 功能描述: |
| TDK5100FHTMA1 | 制造商:Infineon Technologies AG 功能描述:RF Transmitter ASK/FSK 2.5V/3.3V 10-Pin TSSOP T/R 制造商:Infineon Technologies AG 功能描述:CONTROL - Tape and Reel |
| TDK5100FHTMA3 | 制造商:Infineon Technologies AG 功能描述:TRANSMITTER ASK/FSK SGL TSSOP10 |
| TDK5100FT | 制造商:Infineon Technologies AG 功能描述:ASK/FSK TRANSMITTER 434 MHZ, 1 |
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