参数资料
型号: TB1245N
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PDIP56
封装: PLASTIC, SDIP-56
文件页数: 77/101页
文件大小: 1490K
代理商: TB1245N
TB1245N
2001-07-26
77
TEST CONDITION (Unless otherwise specified : H, RGB VCC = 9V ; VDD, Fsc VDD, Y / C VCC = 5V ; Ta = 25±3°C ; BUS = preset value)
SW MODE
SUB-ADDRESS & BUS DATA
NOTE
ITEM
S21 S22 S31 S33 S34 S51 S42
00H 02H 1CH 1DH
MEASURING METHOD
T10
Relative Amplitude
(PAL)
B
A
FFH
80H 3FH
While inputting rainbow color bar signal (4.43 MHz for PAL) to pin 42
and 0.3 V synchronizing signal to pin 48 so that video amplitude of pin
33 is 0.38 Vp-p, find the relative amplitude.
(Mpr-b = Vu14mx / Vu12mx, Mpg-b = Vu13mx / Vu12mx)
T11
Relative Phase (PAL)
(1) In the test condition of the Note T10, adjust bus data on tint so that
output of pin 12 (B OUT) has the peak level in the 6th bar.
(2) Regarding the phase of pin 12 (B OUT) as a reference phase, find
comparative phase differences of pin 14 (R OUT) and pin 13 (G
OUT) from the reference phase respectively (θpr-b, θpg-b).
T12
Color Control
Characteristic
B
FFH
(1) Input 0.3 V synchronizing signal to pin 48 (Sync IN).
(2) Input 100 kHz, 0.1 Vp-p sine wave signal to both pin 33 (B-Y IN)
and pin 34 (R-Y IN).
(3) Connect pin 21 (Digital Ys) and pin 22 (Analog Ys) to ground.
(4) Set bus data so that unicolor is maximum, drive is at center value
and Y mute is on.
(5) Measure amplitude of pin 12 (B OUT) as bus data on color is set
maximum (FF). (Vcmx)
(6) Read bus data when output level of pin 12 is 10%, 50% and 90%
of Vcmx respectively (Dc10, Dc50, Dc90).
T13
Color Control
Characteristic,
Residual Color
00H
(7) From results of the above step
6, calculate number of steps
from Dc10 to Dc90 (col) and
that from 00 to Dc50 (ecol).
(8) Measure respective amplitudes
of pin 12 (B OUT), pin 13 (G
OUT) and pin 14 (R OUT) with
color data set at minimum, and
regard the results as color
residuals (ecb, ecg, ecr).
相关PDF资料
PDF描述
TB1246AN COLOR SIGNAL DECODER, PDIP56
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