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參數(shù)資料
| 型號： | 935262634112 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1 CHANNEL, VIDEO AMPLIFIER, PZIP13 |
| 封裝： | PLASTIC, SOT-141, DIL-BENT-SIL, 13 PIN |
| 文件頁數(shù)： | 2/18頁 |
| 文件大?。?/td> | 153K |
| 代理商： | 935262634112 |
1997 Aug 27
10
Philips Semiconductors
Preliminary specication
Video output amplier
TDA6120Q
Fig.7 Output (pins 12 and 13; falling edge) as a function of input signal.
162.5
150
100
50
37.5
38.75
36.25
overshoot (in %)
t
0
x
MGK445
Voc
Vi
tpd
tst
to(r)
FLASHOVER PROTECTION
The TDA6120Q does NOT include protection diodes that
clamp the cathode output pin to the high voltage supply pin
during a CRT flashover discharge. Therefore an external
high voltage reverse biased diode has to be connected
between the OUTC pin and the VDD pin. An external 147
carbon high-voltage resistor in combination with a 2 kV
spark gap between the cathode and ground will limit the
maximum clamp current (for this resistor value, the CRT
has to be connected to the main printed-circuit board).
This external network causes an increase in the rise and
fall times and a decrease in the overshoot.
Pin 10 must be decoupled to pin 8:
By a capacitor >22 nF with good HF behaviour (e.g. foil).
This capacitor must be placed as close as possible to
pin 10 and pin 8; definitely within 5 mm.
By a capacitor >3.3 F on the picture tube base printed
circuit board (common for three output stages).
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