TDA4504B Datasheet, PDF (22/26 Pages) NXP Semiconductors – Small signal combination for multistandard colour TV

Philips Semiconductors
Small signal combination for multistandard colour TV
Product specification
TDA4504B
Fig.7 Switching levels coincidence detector.
COINCIDENCE DETECTOR SWITCHING LEVELS
CONDITION
PIN 18
VIDEO SWITCH
Low internal video
CONDITION
PIN 17
VCR SWITCH
floating
automatic
VCR
HIGH or
floating
external video
HIGH
forced VCR
LOW
T.V. mode
don't care
CONDITION
V₂₅
V₂₅ >6.7 V
and
strong signal
weak signal
V₂₅ < 6.1 V
and
strong signal
weak signal
don't care
V₂₅ > 6.7 V
V₂₅ < 6.1 V
don't care
CONTROL SENSITIVITY
HOR.OSCILLATOR kHz / S
T2 − T1
T3 = SCAN
11.3
7.6
1.3
1.3
11.3
7.6
11.3
7.6
11.3
7.6
1.3
1.3
11.3
7.6
11.3
7.6
February 1992
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