BA7062 Просмотр технического описания (PDF) - ROHM Semiconductor

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BA7062

SYNC separator IC with AFC

ROHM Semiconductor 

Multimedia ICs

BA7062F

•Electrical characteristics (unless otherwise noted, Ta = 25°C and VCC = 5V)

Parameter

Symbol Min. Typ. Max. Unit

Conditions

Quiescent current

Minimum SYNC separation level

Pulse voltage, Low

Pulse voltage, High

(Horizontal)

free-running frequency

Capture range

Lock-in phase

HD pulse width

VD pulse width

᭺ Not designed for radiation resistance.

IQ

2.0

Vsyn-Min. —

VP-L

—

VP-H 4.7

4.1 6.2

0.08 0.15

0.1 0.3

4.9 —

mA Pin 3 open

VP-P Pin 6 terminated with 75Ω resistor

V 2, 4 pin

V 2, 4 pin

fH-O 13.9 15.7 17.5 kHz No input signal, I1 = open

∆fCAP ± 2.1 ± 2.9 — kHz

—

THPH – 1.0 0 + 1.0 µs 2pin

– 6pin

THD 10.5 11.5 12.5 µs 2pin

TVD 200 260 320 µs 4pin

•Measurement circuit

2200p

0.022µ

47µ

1µ +

1µ

39k

+

VCC

A

8

7

Video In

75

1µ

+

6

5

470k

1

2

3

4

II

130k

VTVTVT

100p

10k VCC

Fig. 7

•Circuit operation

(1) Synchronization separation circuit

(3) Vertical synchronization separation circuit

Detects the charging current to a externally-connected

When a video signal is input, synchronization signal

capacitor, and performs synchronization separation.

separation is done over the vertical synchronization

(2) Horizontal oscillation circuit

pulse interval.

When a video signal is input, it is synchronized with

Hsync by the PLL. The horizontal free-running frequen-

cy is determined by external resistor R1.

fH-O = 2.05E6 [kHz]

R1

3

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