參數(shù)資料
型號(hào)： TA1276AF
元件分類： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PQFP80
封裝： 14 X 20 MM, 0.80 MM PITCH, PLASTIC, QFP-80
文件頁數(shù)： 55/83頁
文件大小： 1585K
代理商： TA1276AF
TA1276AF
2002-01-29
59
Test Conditions (unless otherwise stated, VCC1 = 5 V, VCC2/VCC3/DEF VCC = 9 V, Ta = 25 ± 3°C)
Switching Mode
Note
Parameter
SW33
SW34
SW35
SW37
SW38
SW39
SW51
SW52
SW53
Test Conditions
T27
Analog OSD Gain
↑
A
or
B
A
or
B
A
or
B
↑
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.
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
T28
Analog OSD White Peak Slice
Level
A
B
A
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)
T29
Analog OSD Black Peak
Limiter Level
↑
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, 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.
T30
Analog OSD Output DC
Voltage
↑
1)
Repeat step 1) of T27.
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)
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