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參數(shù)資料
| 型號(hào)： | TA8701AN |
| 元件分類： | 接收器 |
| 英文描述： | AUDIO/VIDEO DEMODULATOR, PDIP24 |
| 封裝： | 0.300 INCH, 1.78 MM PITCH, PLASTIC, SDIP-24 |
| 文件頁(yè)數(shù)： | 2/19頁(yè) |
| 文件大小： | 478K |
| 代理商： | TA8701AN |
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TA8701AN
2001-05-10
10
Note 8: Carrier wave rejection ratio
PIF input (Pin 4) : fo = 58.75MHz, fm = 15.75kHz, 78% AM, 84dBV.
Add the voltage 2nd AGC terminal (Pin 1), So that the video output (Pin 19-b) can be 2Vp-p.
Calculate the following equation by setting the modulation off and measuring the output carrier level.
(Vno-mod [Vp-p])
[dB]
)
(V
V
2.0
og
20
C
p
-
p
mod
-
no
L
l
=
Note 9: Harmonic rejection ratio
Measure as is Note 8 above, and calculate the secondary harmonic level (117.5MHz component) at video
output (Pin 19-b).
Note 10: AFT sensitivity
PIF input (Pin 4) : fo = 58.75MHz, 84dBV, CW.
Input the above signal and adjust the AFT coil so that the AFT output pin (Pin 24) voltage is 4.5V.
Measure the output voltage differential (V) of the AFT output pin when the frequency is raised by 20kHz.
Then, calculate the ratio using the following formula.
/ V]
[kHz
V
20
V
f =
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| TA8703 | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:QUASI-SIF SYSTEM FOR TV |
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| TA8710 | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:SIF CONVERTER FOR TV AND VTR |
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