參數(shù)資料
型號: LA1787M
廠商: Sanyo Electric Co.,Ltd.
英文描述: Single-Chip Tuner IC for Car Radios
中文描述: 單芯片調(diào)諧器IC的汽車收音機
文件頁數(shù): 45/54頁
文件大?。?/td> 606K
代理商: LA1787M
No. 6655-45/54
LA1787M
FM
RF
MIX IN 64 pin
1st IF IN 56 pin
2nd IF IN 51 pin
ANT IN
11 dB
12 dB
18 dB
A11773
Fig. 54
Gain Distribution (FM)
This section investigates the gain in each block in the LA1787M when the Sanyo recommended circuits are used.
(Test conditions)
Ambient temperature: 26°C
Antenna and mixer input frequency: 98.1 MHz
First and second IF input frequency: 10.7 MHz
The input levels when V
SM
= 2 V will be as follows.
ANT IN: 19 dBμ
MIX IN: 30 dBμ
1st IF IN: 42 dBμ
2nd IF IN: 60 dBμ
When the gains for each block are determined according to the above, the results are as follows.
RF GAIN: 11 dB
MIX GAIN: 12 dB
1st IF GAIN: 18 dB
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