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参数资料
| 型号： | TB1227CNG |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDIP56 |
| 封装： | 0.600 INCH, 1.78 MM PITCH, PLASTIC, SDIP-56 |
| 文件页数： | 30/94页 |
| 文件大小： | 1291K |
| 代理商： | TB1227CNG |
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TB1227CNG
2004-05-24
36
TEST CONDITION
VIDEO SECTION
TEST CONDITION (Unless otherwise specified : H, RGB VCC = 9V ; VDD, Fsc VDD, Y / C VCC = 5V ; Ta = 25±3°C)
SW MODE
SUB-ADDRESS & BUS DATA
NOTE
ITEM
S39
S42
S44
S45
S51
04H 08H 0FH 10H 13H 14H
MEASURING METHOD
Y1
Y Input Pedestal
Clamping Voltage
A
C
B
A
20H 04H 80H 00H BAH 03H
(1) Short circuit pin 45 (Y1 IN) in AC coupling.
(2) Input synchronizing signal to pin 51 (SYNC IN).
(3) Measure DC voltage at pin 45, and express the measurement result as VYcIp.
Y2
Chroma Trap
Frequency
↑
A
B
↑
(1) Set the 358 TRAP mode to AUTO by setting the bus data.
(2) Set the bus data so that chroma trap is ON and f0 is 0.
(3) Input TG7 sine wave signal whose frequency is 3.58MHz (NTSC) and video
amplitude is 0.5V to pin 45 (Y1 IN).
(4) While observing waveform at pin 37 (Y1out), find a frequency with minimum
amplitude of the waveform. The obtained frequency shall be expressed as fIr3.
(5) Change the frequency of the signal 1 to 4.43MHz (PAL) and perform the same
measurement as the preceding step 4. The obtained frequency shall be expressed
as fIr4.
Y3
Chroma Trap
Attenuation
(3.58MHz)
↑
Vari-
able
Vari-
able
Vari-
able
↑
(1) Set the 358 TRAP mode to AUTO by setting bus data.
(2) Set the bus data so that Q of chroma trap is 1.5.
(3) Set the bus data so that f0 of chroma trap is 0.
(4) Input TG7 sine wave signal whose frequency is 3.58MHz (NTSC) and video
amplitude is 0.5V to pin 45 (Y1 IN).
(5) While turning on and off the chroma trap by controlling the bus, measure chroma
amplitude (VTon) at pin 37 (Y1out) with the chroma trap being turned on and
measure chroma amplitude (VToff) at pin 37 (Y1out) with the chroma trap being
turned off.
Gtr = 20og (VToff / VTon)
(6) Change f0 of the chroma trap to 100kHz, 50kHz, 0 and +50kHz, and perform the
same measurement as the preceding steps 4 and 5 with the respective f0 settings.
(7) Change Q of the chroma trap t 1, 1.5, 2 and 2.5, and perform the same
measurement as the preceding steps 4 through 6. The maximum Gtr shall be
expressed as Gtr3a.
(8) Set the 358 TRAP mode to the forces 358 mode by setting bus data, and perform
the same measurement as the preceding steps 2 through 7 (Gtr3f).
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TB1229DN | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:VIDEO, CHROMA AND SYNCHRONIZING SIGNALS PROCESSING IC FOR PAL/NTSC SYSTEM COLOR TV |
| TB1230AN | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:VIDEO, CHROMA AND SYNCHRONIZING SIGNALS PROCESSING IC FOR PAL/NTSC SYSTEM COLOR TV |
| TB1231AN | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:PAL/NTSC 1CHIP (IF + VCD PROCESSOR) IC |
| TB1231CN | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:PAL/NTSC 1CHIP (IF+VCD PROCESSOR) IC |
| TB1238BN | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:PAL/NTSC 1CHIP (IF + VCD PROCESSOR) IC |
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