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: 73/101页
文件大小: 1490K
代理商: TB1245N
TB1245N
2001-07-26
73
TEXT SECTION
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
00H 02H
MEASURING METHOD
T1
Y Color Difference
Clamping Voltage
B
A
FFH 00H
(1) Short circuit pin 31 (Y IN), pin 34 (R-Y IN) and pin 33 (B-Y IN)
in AC coupling.
(2) Input 0.3 V synchronizing signal to pin 48 (Sync IN).
(3) Measure voltage at pin 31, pin 34 and pin 33 (Vcp31, Vcp34,
Vcp33).
(1) Input TG7 sine wave signal whose frequency is 100 kHz and
video amplitude is 0.7 V to pin31 (Y IN).
(2) Input 0.3 V Synchronizing Signal to pin 48 (Sync IN).
(3) Connect both pin 21 (Digital Ys) and pin 22 (Analog Ys) to
ground.
(4) Set bus data so that Y sub
contrast and drive are set at
each center value and color is
minimum.
(5) Varying data on contrast from
maximum (FF) to minimum
(00), measure maximum and
minimum amplitudes of
respective outputs of pin 14 (R
OUT), pin 13 (G OUT) and pin
12 (B OUT) in video period,
and read values of bus data at
the same time.
T2
Contrast Control
Characteristic
FFH
80H
00H
Also, measure the respective amplitudes with the bus data set
to the center value (80)
(Vc12mx, Vc12mn, D12c80)
(Vc13mx, Vc13mn, D13c80)
(Vc14mx, Vc14mn, D14c80)
(6) Find ratio between amplitude with maximum unicolor and that
with minimum unicolor in conversion into decibel (V13ct).
T3
AC Gain
In the test condition of Note T2, find output / input gain (double) with
maximum contrast.
G = Vc13mx / 0.7 V
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