TB1254N Просмотр технического описания (PDF) - Toshiba
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TB1254N Datasheet PDF : 58 Pages
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PIN NAME
FUNCTION
38 SYNC IN
An input terminal for Sync signal.
The input sync chip is clamped by
charging/discharging the coupling capacitors
so as to align the Sync slice level, therefore
input through low impedance buffer.
(input level 1Vp-p/140IRE)
38
INTERFACE
31
832Ħ
1kĦ
3VF
6kĦ
24kĦ
39 Y IN
An input terminal for Y signal.
The pedestal level is clamped by means of
charging/discharging the coupling capacitor,
therefore input through low impedance buffer.
(1Vp-p/140IRE input level)
39
1kĦ
1kĦ
1kĦ
40 DC RESTOR A terminal to be connected with a capacitor to
detect the average picture level for DC
restoration.
The ratio of the DC restoration is set by bus.
Leave this terminal open if the DC restoration
is not required.
40
33
42
<Amp>
19
<Clamp> <read Bus>
42
50k
10k
41 MON OUT
An output terminal of AV SW monitor.
The input signal for pin # 46/48 is output
through 6dB amplifier .
(output level 2Vp-p/140IRE)
41
42 Y/C VCC
An Vcc terminal for Y/C circuit.
Supply 5V.
19
14
8kĦ
8kĦ
2V
19
•
Ver3.7
00/01/28 9
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