- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄378467 > CXA1871S (Sony Corporation) Single Supply RS232C Line Driver/Receiver(?????μ?o?RS232C ?o?????????¨???2???2??????) PDF資料下載
參數(shù)資料
| 型號： | CXA1871S |
| 廠商： | Sony Corporation |
| 元件分類： | 外設(shè)及接口 |
| 英文描述： | Single Supply RS232C Line Driver/Receiver(?????μ?o?RS232C ?o?????????¨???2???2??????) |
| 中文描述： | 單電源RS232C接口線路驅(qū)動器/接收器（單電源RS232C接口線收發(fā)器（2發(fā)2收）） |
| 文件頁數(shù)： | 31/46頁 |
| 文件大?。?/td> | 639K |
| 代理商： | CXA1871S |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁當(dāng)前第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁
—31—
CXA1871S
Description of Operation
1. Synchronizing and picture distortion correction systems
The video signals (2 Vp-p standard) input to Pins 43 and 44 are led to the horizontal and vertical sync
separation circuits for sync separation.
This horizontal sync signal is compared with the signal obtained by 1/32 frequency dividing the 32 fh VCO
output using the ceramic oscillator (frequency: 503.5 kHz) to detect a phase difference. The error voltage
resulting from the phase difference is applied to the H oscillator after attenuating the medium and high
frequency components by a lag-lead filter. The phase of the H oscillator output is compared and shifted to
match the phase of the H deflection pulse (flyback pulse) input from Pin 34, and then output from Pin 32.
After the vertical sync signal is synchronized to the input signal by the V countdown system, a sawtooth
wave is generated by charging and discharging the capacitor attached externally to Pin 29. AGC is
performed to ensure that the amplitude of the sawtooth wave output is maintained constant regardless of
the vertical frequency of the input, after which the sawtooth wave passes through the picture distortion
correction circuit and is output from Pin 27.
Note that there is no need to adjust the free running frequency for either the H or V oscillator.
When voltage of 3 V or more is applied to Pin 33, the H drive output is held at low level. A time constant
circuit is included to protect against overvoltages, and H drive is output normally when high voltage input
continues for less than 7 V cycles. To release holddown, the IC must be turned off and then started up
again.
BGP, HBLK and VBLK are output to Pin 42 as SCP (Sand Cathle Pulse).
Note)
If external capacitance of Pin 30 is used with 0.1 μF or less of the recommended value, vertical sync output
may be unstable.
When changing the capacitance value, use it with 0.047 μF or more.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CXA1898Q | Single Supply RS232C Line Driver/Receiver(?????μ?o?RS232C ?o?????????¨???2???2??????) |
| CXA1915AN | I-V Photo IC for MiniDisc(內(nèi)置I-V放大器的光電芯片(用于檢測小型磁盤光學(xué)拾波器信號)) |
| CXA1940N | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
| CXA1946 | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
| CXA1946AQ | Electronic Volume |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CXA1875AM | 制造商:Panasonic Industrial Company 功能描述:IC |
| CXA1998AQT6 | 制造商:Panasonic Industrial Company 功能描述:IC |
| CXA1998QT6 | 制造商:Panasonic Industrial Company 功能描述:IC |
| CXA20 | 制造商:ARTESYN 制造商全稱:Artesyn Technologies 功能描述:20W DC/DC Converters |
| CXA2000 | 制造商:SONY 制造商全稱:Sony Corporation 功能描述:Y/C/RGB/D for PAL/NTSC Color TVs |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。