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TA1276AN

PAL / NTSC VIDEO CHROMA AND DEFLECTION IC FOR CTV (NORMAL SCAN / DOUBLE SCAN MODE)

Toshiba 

TA1276AN

O Pin 23 H-out (Mode SW)

You can select the Double Scan Mode (External CP (Clamping Pulse) input Mode), by connecting Pin 23 to DEF

VCC. (The threshold of Pin 23 : 8.7V = DEF VCC−0.3V)

When Double Scan Mode, function of Pin 24 and 25 are changed.

l Normal Scan (Internal CP) Mode : Pin 23 ― H-out

The function of Pin 24 is curve correction input, that of Pin 25 is FBP (Flay Back Pulse) input.

The input signals of Y2, U / I and V / I inputs (Pin 53, 52 and 51), Analog OSD inputs (Pin 39, 38 and 37),

Analog RGB inputs (Pin 35, 34 and 33) are clamped of the internal CP based on the Y1 / Sync input (Pin 15).

l Double Scan (External CP input) Mode : Pin 23 ― H-out

The function of Pin 24 is EXT / BPP (Note) input, that of Pin 25 is H / V BLK (blanking) input.

The input signals of Y2, U / I and V / I inputs (Pin 53, 52 and 51), Analog OSD inputs (Pin 39, 38 and 37),

Analog RGB inputs (Pin 35, 34 and 33) are clamped of the external CP based on Pin 24.

In case of Double Scan Mode, bus “V-BLK” should be set (1) ; OFF.

TERMINAL FUNCTIONS

PIN No.

MODE

Pin 23

Pin 24

Pin 25

Pin 53, 52, 51

Pin 39, 38, 37

Pin 35, 34, 33

Pin 15

Pin 17

Pin 31

NORMAL SCAN MODE

(INTERNAL CP)

H-out

Curve correction signal input

FBP input (for AFC-2 detection, H BKL)

DOUBLE SCAN MODE

(EXTERNAL CP INPUT)

DEF VCC (9V)

EXT CP / BPP input

H / V BLK input (for RGB H / V BLK, AKB)

Clamping by internal CP

(based on Pin 15)

Clamping by external CP

(based on Pin 24)

Normal scan ; Y / Sync signal input

Normal scan ; HD pulse output (based on Pin 15)

Normal scan ; VP output (based on Pin 15)

Note: BPP : Black Peak detection stopping Pulse

MAXIMUM RATINGS (Ta = 25°C)

CHARACTERISTIC

Supply Voltage

Input Terminal Voltage

Power Dissipation

Power Dissipation Reduction Rate

Operating Temperature

Storage Temperature

Note 1: Refer to the figure below.

SYMBOL

VCCmax

einmax

PD (Note 1)

1 / θja

Topr

Tstg

RATING

12

9

1920

15.4

−20~65

−55~150

UNIT

V

Vp-p

mW

mW / °C

°C

°C

Fig. Power dissipation reduction against higher temperature

20

2002-03-29

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