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参数资料
| 型号： | TA8876FA |
| 元件分类： | 接收器 |
| 英文描述： | AUDIO/VIDEO DEMODULATOR, PDSO30 |
| 封装： | 0.375 INCH, 1 MM PITCH, PLASTIC, SSOP-30 |
| 文件页数： | 3/20页 |
| 文件大小： | 443K |
| 代理商： | TA8876FA |
TA8876FA
2001-05-10
11
TEST CONDITIONS
< PIF circuit >
Note 1: Input sensitivity
PIF input : f = 58.75 MHz, fm = 15.75 kHz, 30% AM, 84 dBV. Gradually reduce the input level. Measure the
input level when the detection output at video output-2 will be 3 dB.
Note 2: Maximum input level
PIF input : f = 58.75 MHz, fm = 15.75 kHz, 30% AM, 84 dBV.
Gradually raise the input level. Measure the input level when the detection output at video output-2 is at the
noise inverter threshold.
Note 3: No-signal level
PIF input : No input. 2nd AGC terminal : GND
Measure DC voltage at video output-2.
Note 4: Sync. Tip level
PIF input : f = 58.75 MHz, standard television signal (V / S = 10 : 4 ramp waveform), 87.5% AM,
84 dBV.
Measure sync. Tip DC voltage at video output-2.
Note 5 Video output amplitude
PIF input : f = 58.75 MHz, standard television signal (V / S = 10 : 4 ramp waveform), 87.5% AM,
84 dBV.
Measure amplitude level at video output-2.
Note 6: Video S / N ratio
PIF input : f = 58.75 MHz, fm = 15.75 kHz, 30% AM, 84 dBV.
Using the RMS voltmeter, measure the detection output at video output-2.
Then, using the RMS voltmeter, measure the video detection output without modulation.
[dB]
6
)
(mV
modulation
without
Value
)
(mV
modulation
with
Value
og
20
N
/
S
rms
×
=
l
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