TA1276AFG Datasheet, PDF(59/83 Page) Toshiba Semiconductor – PAL/NTSC Video Chroma And Deflection IC For CTV

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TA1276AFG Datasheet, PDF (59/83 Pages) Toshiba Semiconductor – PAL/NTSC Video Chroma And Deflection IC For CTV

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TA1276AFG

Note

T27

T28

T29

T30

Parameter

SW33

Analog OSD Gain

Analog OSD White Peak Slice

Level

Analog OSD Black Peak

Limiter Level

Analog OSD Output DC

Voltage

SW34

SW35

Test Conditions (unless otherwise stated, VCC1 = 5 V, VCC2/VCC3/DEF VCC = 9 V, Ta = 25 Â± 3Â°C)

Switching Mode

SW37 SW38 SW39 SW51 SW52 SW53

Test Conditions

1) Input signal 1 (f0 = 100 kHz, picture period amplitude = 0.2 Vp-p) to pin 78

and adjust the drive adjustment data so that the picture period amplitudes

of pins 13 and 15 are equal to that of pin 11.

2) Apply 5 V from an external power supply to pin 21.

3) Input signal 1 (f0 = 100 kHz, picture period amplitude = 0.2 Vp-p) to pin 18.

A 4) Measure the picture period amplitude of pin 11. (V43R)

5) As in steps 3) and 4) above, input to pin 19 and measure pin 13, then input

to pin 20 and measure pin 15. (V42G, V41B)

6) GOSDR = V43R/0.2

GOSDG = V42G/0.2

GOSDB = V41B/0.2

1) Repeat step 1) of T27.

2) Apply 5 V from an external power supply to pin 21.

3) Apply external voltage to pin 18, increase the voltage gradually from 0.0 V,

and measure the picture period amplitude voltage when pin 11 is clipped.

(VOSD1R)

4) As in step 3) above, input to pin 19 and measure pin 13. Input to pin 20

and measure pin 15.

5) Set the subaddress (10) data to (04) and repeat the measurements in

steps 3) and 4).

(VOSD2R, VOSD2G, VOSD2B)

1) Repeat step 1) of T27.

2) Apply 5 V from an external power supply to pin 21.

â 3) Apply external voltage to pin 18, decrease the voltage gradually from 4.5

V, and measure the voltage when pin 11 is clipped.

4) As in step 3) above, input to pin 19 and measure pin 13. Input to pin 20

and measure pin 15.

1) Repeat step 1) of T27.

â 2) Apply 5 V from an external power supply to pin 21.

3) Measure the picture period voltages of pins 11, 13, and 15.

(VOSDDCR, VOSDDCG, VOSDDCB)

2002-04-01

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