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參數(shù)資料
| 型號： | TB1261F |
| 元件分類： | 消費家電 |
| 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)： | 44/66頁 |
| 文件大?。?/td> | 1538K |
| 代理商： | TB1261F |
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TB1261F/TB1262F
2002-6-30 49 / 66
Note
Items/Symbols
Bus
Bus conditions
conditions
Measurement methods
T9
Analog RGB
Dynamic Range
/ DRTX
RGB Mute:0
B cut off:128
DC rest.:2(100%)
RGB
Contrast:32
Ysm Mode:1
Others: Preset
(1) Input a composite sync signal into Pin61.
(2) Supply 2.5V to Pin20.
(3) Input a signal of following figure into Pin23.
(4) Increasing the amplitude of Pin23 input, measure the
amplitude at which the Pin14 amplitude stops increasing,
that is "DRTX".
Amplitude V
0
Sinusoidal wave
Frequency f
0
pin23 input
pin61 input
T11
Analog RGB
Brightness Control
Characteristic
/ VTXBRMAX
/ VTXBRCEN
/ VTXBRMIN
RGB Mute:0
B cut off:128
DC rest.:2(100%)
Brightness:
0/64/127 Others:
Preset
(1) Supply 3V to Pin15.
(2) Connect Pin21, 22 and 23 to GND via a 0.1uF of capacitor.
(3) For Brightness 127/64/0, measure the DC level of picture
period at Pin14, that is "VTXBRMAX" / "VTXBRCEN" / "VTXBRMIN".
T12
Ysm Mode Switching
Level
/ＶYSANA
/ VYSBLK
RGB Mute:0
Others:
Preset
(1)Input a composite sync signal into Pin61.
(2)Input a signal of NOTE:T9 figure into Pin23.
(3)More Increasing the Pin23 voltage, measure the voltage at
which the signal inputted into Pin23 appears at Pin14, that is
"VYSANA".
(4)Increasing the Pin23 voltage, measure the voltage at which
the signal disappear at Pin14, that is "VYSBLK".
T13
Analog RGB Mode
Transfer
Characteristic
/ τRYS
/ tPRYS
/ τFYS
/ tPFYS
RGB Mute:0
B cut off:128
DC rest.:2(100%)
Others: Preset
(1) Input a 50(IRE) (=0.35Vp-p) Y signal with sync into Pin61.
(2) Connect Pin21, 22 and 23 to GND via a 0.1uF capacitor.
(3) Measure the Analog RGB Mode Transfer time, according to
following figure,
1H
20μs
20ns
tPR
tPFYs
50%
100%
0%
50%
90%
10%
τRYS
τFYS
Pin20 Input
Pin14 Output
T14
Cross Talk from
Analog RGB to TV
/ CTTX-TV
RGB Mute:0
B cut off:128
DC rest.:2(100%)
contrast:127
Others: Preset
(1) Input a composite sync signal into Pin61.
(2) Connect Pin61 to GND via a 1uF capacitor.
(3) Input
a
sine
wave
signal
(f=4MHz,
Video
amplitude=0.5V(p-p)) into Pin23.
(4) Supply 0V to Pin20.
(5) Measure the amplitude at Pin14, that is VTV.
(6) Supply 2.5V to Pin20.
(7) Measure the amplitude of 4MHz signal at Pin14, that is
VTX.
(8) Calculate; "CTTX-TV"=20*log(VTV/ VTX)
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