TDA4454 데이터 시트보기 (PDF) - Temic Semiconductors

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TDA4454

Multistandard VIF Amplifier and PLL Demodulator

Temic Semiconductors 

TDA4454

IF-AGC, Switching Thresholds

93 7645

TELEFUNKEN Semiconductors

4.2 V Ultra white level: zero carrier

4.0 V White level: 10 % carrier

2.0 V Sync. peak level: 100% carrier

(charge / discharge threshold)

Figure 12. B/G-standard (neg. modulated)

93 7646

4.0 V Peak level: 100 % carrier

(charge threshold)

93 7647

Dig.:

Sound

+Sync.

Analog:

Chrominance

Diff.: Signal

[ 2.4 V Average discharge threshold

v 2.0 V Sync. peak level : 6 % carrier

1.9 V Ultra black level: zero carrier

Figure 13. L-standard (pos. modulated)

Analog:

Luminance Signal

[4.2 V DC value: zero carrier

4.1 V Average discharge threshold

4.0 V White level: 10 % carrier

8 (11)

2.0 V Black level: 100 % carrier

(charge threshold)

Figure 14. D2MAC-standard (neg. modulated)

Preliminary Information

Rev. A1: 04.05.1995

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