參數(shù)資料
型號: TB1245N
元件分類: 消費家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PDIP56
封裝: PLASTIC, SDIP-56
文件頁數(shù): 76/101頁
文件大?。?/td> 1490K
代理商: TB1245N
TB1245N
2001-07-26
76
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 05H 1CH 08H 1DH
MEASURING METHOD
(1) Input 0.3 V synchronizing signal to pin 48 (Sync IN).
(2) Input 100 kHz, 0.3 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 drive is at center value, Y mute is on and color
limiter is OFF.
(5) While changing bus data on
unicolor from maximum (FF) to
minimum (00), measure maximum
and minimum amplitudes of pin 12
(B OUT) in video period
respectively, and read the bus data
together with. Also, measure
respective amplitudes as unicolor
data is set at center value (80).
(Vn12mx, Vn12mn, D12n80)
(Vn14mx, Vn14mn, D14n80)
T7
Unicolor Control
Characteristic
B
A
FFH
80H
00H
80H
3FH
(6) Find ratio between amplitude with maximum unicolor data and that
with minimum unicolor data in conversion into decibel (V14un).
T8
Relative Amplitude
(NTSC)
A
A
FFH
While inputting rainbow color bar signal (3.58 MHz for NTSC) 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.
(Mnr-b = Vu14mx / Vu12mx, Mng-b = Vu13mx / Vu12mx)
T9
Relative Phase
(NTSC)
(1) In the test condition of the Note T8, 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 (θnr-b, θng-b).
相關PDF資料
PDF描述
TB1246AN COLOR SIGNAL DECODER, PDIP56
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