TDA6120 데이터 시트보기 (PDF) - Philips Electronics

부품명

상세내역

제조사

TDA6120

Video output amplifier

Philips Electronics 

Philips Semiconductors

Video output amplifier

Product specification

TDA6120Q

x

Vi

0

t

x

tst

162.5

150

Voc

100

50

37.5

overshoot (in %)

to(r)

tpd

38.75

36.25

t

MGK445

Fig.7 Output (pins 12 and 13; falling edge) as a function of input signal.

FLASHOVER PROTECTION

The TDA6120Q needs an external protection diode

combined with a 50 Ω resistor to protect the video amplifier

against CRT flashover discharge.

An external 147 Ω 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 >100 nF with good HF behaviour (e.g.

foil). This capacitor must be placed as close as possible

to pins 10 and 8; definitely within 5 mm.

• By a capacitor >10 µF on the picture tube base

printed-circuit board (common for 3 output stages).

2000 Dec 13

10

Share Link: