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參數資料
| 型號： | TSH120ICT |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO6 |
| 封裝： | LEAD FREE, PLASTIC, SC70, 6 PIN |
| 文件頁數： | 12/13頁 |
| 文件大小： | 175K |
| 代理商： | TSH120ICT |
Implementation in the application
TSH120
8/13
3
Implementation in the application
This section explains how the TSH120 video buffer operates in a typical application.
On the input, a DC level shifter optimizes the position of the video signal with no clamping
on the output rails. The filter is a reconstruction filter. It is used to attenuate the DAC’s
sampling frequency which causes a parasitic signal in the video spectrum (typically at
27MHz in the case of standard video). This function must be achieved while keeping a low
group delay.
On the output, the SAG correction decreases Cout while keeping a very low frequency pole
(see Figure 18). Nevertheless, the output can be directly connected to the line without any
capacitor. In this case, both OUT and SAG pins are connected together and the equivalent
gain of the buffer remains 6dB (see Figure 19).
Figure 18.
Schematic diagram with output capacitor
Figure 19.
Schematic diagram without output capacitor
75
cable
75
+
-
+2.2V to +5.5V
Cout
33F
Rail-to-rail
DC shifter
LPF
3rd order
1
TV
Video
DAC
1Vpp
2Vpp
1Vpp
SAG
6
2
4
3
5 Shutdown
22F
75
cable
75
+
-
+2.2V to +5.5V
Cout
33F
Rail-to-rail
DC shifter
LPF
3rd order
1
TV
Video
DAC
1Vpp
2Vpp
1Vpp
SAG
6
2
4
3
5 Shutdown
22F
75
cable
75
+
-
Rail-to-rail
DC shifter
LPF
3rd order
1
TV
Video
DAC
1Vpp
2Vpp
1Vpp
SAG
6
2
4
3
5 Shutdown
+2.2V to +5.5V
75
cable
75
+
-
Rail-to-rail
DC shifter
LPF
3rd order
1
TV
Video
DAC
1Vpp
2Vpp
1Vpp
SAG
6
2
4
3
5 Shutdown
+2.2V to +5.5V
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| TSH173ID | SPECIALTY CONSUMER CIRCUIT, PDSO8 |
| TSH341IDT | 1 CHANNEL, VIDEO AMPLIFIER, PDSO8 |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TSH-121-01-F-D | 制造商:Samtec Inc 功能描述:2MM HORIZONTAL MOUNT TERMINAL STRIP - Bulk |
| TSH-121-01-F-DV | 制造商:Samtec Inc 功能描述:2MM HORIZONTAL MOUNT TERMINAL STRIP - Bulk |
| TSH-121-01-FM-D | 制造商:Samtec Inc 功能描述:2MM HORIZONTAL MOUNT TERMINAL STRIP - Bulk |
| TSH-121-01-FM-DV | 制造商:Samtec Inc 功能描述:2MM HORIZONTAL MOUNT TERMINAL STRIP - Bulk |
| TSH-121-01-G-D | 制造商:Samtec Inc 功能描述:2MM HORIZONTAL MOUNT TERMINAL STRIP - Bulk |
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