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參數(shù)資料
| 型號： | P11997EJ2V0AN00 |
| 英文描述： | uPC2757. uPC2758. and uPC8112. 3-V Power Supply. 1.9-GHz Frequency Down-converter ICs for Mobile Communication |
| 中文描述： | uPC2757。 uPC2758。和uPC8112。 3 - V單電源供電。 1.9 - GHz的頻率下，移動(dòng)通信轉(zhuǎn)換器IC |
| 文件頁數(shù)： | 38/51頁 |
| 文件大小： | 265K |
| 代理商： | P11997EJ2V0AN00 |
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Application Note P11997EJ2V0AN00
38
6.
SUMMARY
Table 6-1. Input Pin External Circuits and Characteristics (All Three Product Models)
Pin
Relation to system
Type of external
circuit
Differences vs. characteristic in
data sheet
Emphasized characteristic
RF input pin
Analog systems, etc.
Matching
CG: approximately 5 dB higher
IM
3
: approximately 12 to 15 dB
noisier
CG
Digital cellular telephones,
etc.
50-
termination
CG: 4 to 6 dB lower
IM
3
: 6 to 15 dB better
Intermodulation distortion at
input level
LO input pin
When using a serial
connection with the buffer
amplifier output
Matching
Approximately -6 dB from the
recommended P
LOin
range
When using a serial
connection with the filter
50-
termination
When using a parallel
connection with the VCO
output and buffer amplifier
input
Capacitor coupling
Remark
As for buffer amplifier,
μ
PC2745 and 2746 with 50-
input/output matching are hypothesized.
7.
CONCLUSION
This application note has briefly described application circuit characteristics and selected examples for actual use
of the
μ
PC2757,
μ
PC2758, and
μ
PC8112, which are 3-V power supply, 1.9-GHz frequency down-converter ICs for
cellular/cordless telephone and portable wireless communication devices. We hope that the application note will help
you use this 6-pin mini-mold and super mini-mold type silicon MMICs.
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