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參數(shù)資料
| 型號(hào)： | TA8132ANG |
| 元件分類： | 接收器 |
| 英文描述： | AM/FM, AUDIO SINGLE CHIP RECEIVER, PDIP24 |
| 封裝： | 0.300 INCH, 1.78 MM PITCH, PLASTIC, SDIP-24 |
| 文件頁數(shù)： | 20/21頁 |
| 文件大?。?/td> | 1271K |
| 代理商： | TA8132ANG |
TA8132ANG/AFG,TA2012NG/FG
2004-10-12
8
The gain loss of FM IF AMP
R2
0
10K (Note)
IF
(10.7MHz)
20dB
1dB
M
ode
1 / 8 IF
(1.3375MHz)
20dB
1dB
(Note)
·
In the condition of the 1 / 8 IF mode, it is
possible to set up R2 = ∞ (OPEN).
·
In the condition of IF mode, it is necessary to set up the value of R2 under 10k. When the R2 is over
10k it is feared that the mode is change to the 1 / 8 IF mode.
The gain loss of AM MIXER
R2
0
10K
16dB
1dB
4. AM lowcut circuit
The AM lowcut action is carried out by the bypass of the high frequency component of
the positivefeedback signal at the AF AMP stage. The external capacitor: C6
bypasses this component.
The cutoff frequency fL is determine by the internal resistance 22k (typ.) and the
external capacitor C6 as following;
(Hz)
6
C
3
10
22
2
1
L
f
×
π
×
=
In the case of the AM lowcut function is not needed, set up the value of C6 over 0.47F.
In the condition of C6 ≥ 0.47F, the frequency characteristic has flat response at the low frequency.
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