- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄374302 > KA2511B (SAMSUNG SEMICONDUCTOR CO. LTD.) DEFLECTION PROCESSOR FOR MULTISYNC MONITORS PDF資料下載
參數(shù)資料
| 型號： | KA2511B |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | DEFLECTION PROCESSOR FOR MULTISYNC MONITORS |
| 中文描述： | 偏轉(zhuǎn)處理器多同步監(jiān)測儀 |
| 文件頁數(shù)： | 34/35頁 |
| 文件大?。?/td> | 337K |
| 代理商： | KA2511B |
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頁第31頁第32頁第33頁當前第34頁第35頁
DEFLECTION PROCESSOR FOR MULTISYNC MONITORS KB2511B
33
with C
OSC
: capacitor connected on pin 22
f: synchronisation frequency.
Vertical Moire
By using the vertical moire, VPOS can be modulated from to frame. This function is intended to cancel the fringes
which appear when line to line interval is very close to the CRT vertical pitch. The amplitude pf the modulation is
controlled by register VMOIRE on sub-off via the control bit D7.
DC/DC CONVERTER PART
This unit controls the switch-mode DC/DC con-verter. It converts a DC constant voltage into the B+ voltage
(roughly proportional to the horizontal frequency)necessary for the horizontal scanning. This DC/DC converter can
be configured either in step-up or step-down mode. In both cases it oper-ates very similarly to the well known
UC3842.
Step-up Mode
Operating Description
- The powerMOSisswitched-onduringthe flyback (at the beginning of the positive slope of the horizontal focus
sawtooth).
- The power MOS is switched-off when its current reachesa predeterminedvalue. Forthispurpose, a sense resistor
is inserted in its source. The voltage on this resistor is sent to Pin16 (I
SENSE
).
- The feedback(coming either from the EHV or from the flyback) is divided to a voltage close to 4.8V and com-
pared pared to the internal 4.8V reference(I
VREF
). The difference is amplified by an error amplifier, the output of
which controls the power MOS switch-off current.
Main Features
- Switching synchronized on the horizontal fre-quency,
- B+ voltage always higher than the DC source, - Current limited on a pulse-by-pulse basis.
Step-down Mode
In step-down mode, the Isense information is not used any more and therefore not sent to the Pin16. This mode is
selected by connecting this Pin16 to a DC voltage higher than 6V (for example V
REF-V
).
Operating Description
- The powerMOSis switched-onas for thestep-up mode.
- The feedbackto the error amplifier is done as for the step-up mode.
- The power MOS is switched-off when the HFOCUSCAP voltage get higher than the error amplifier output voltage
Main Features
- Switching synchronized on the horizontal fre-quency,
- B+ voltage always lower than the DC source,
- No current limitation.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| KA278R33 | Low Dropout Voltage Regulator(低壓差穩(wěn)壓器) |
| KA278R51 | Low Dropout Voltage Regulator(低壓差穩(wěn)壓器) |
| KA278RA05 | Low Dropout Voltage Regulator (Fixed & Adjustable)(低壓差穩(wěn)壓器（固定/可調(diào)）) |
| KA2803BD | Earth Leakage Detector |
| KA2804 | Zero Voltage Switch(零電壓開關(guān)) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| KA2531S24 | 功能描述:POT 25K OHM 2W LOG TAPER RoHS:是 類別:電位計，可變電阻器 >> 旋轉(zhuǎn) - 對數(shù) 系列:K 標準包裝:25 系列:51 電阻（歐姆）:10k 功率（瓦特）:0.25W，1/4W 容差:±20% 溫度系數(shù):±1000ppm/°C 匝數(shù):單路 旋轉(zhuǎn):290° 調(diào)節(jié)型:側(cè)面調(diào)節(jié) 電阻材料:導(dǎo)電塑料 端接類型:PCB 引腳 觸動器長度:0.875"（22.22mm） 觸動器類型:開槽軸 觸動器直徑:0.125"（3.18mm） 尺寸 - 主體:方形 - 0.350" L x 0.492" W x 0.522" H（8.89mm x 12.50mm x 13.25mm） 安裝類型:通孔 包裝:散裝 |
| KA2531S28 | 功能描述:POT 25K OHM 2W LOG TAPER RoHS:是 類別:電位計，可變電阻器 >> 旋轉(zhuǎn) - 對數(shù) 系列:K 標準包裝:25 系列:51 電阻（歐姆）:10k 功率（瓦特）:0.25W，1/4W 容差:±20% 溫度系數(shù):±1000ppm/°C 匝數(shù):單路 旋轉(zhuǎn):290° 調(diào)節(jié)型:側(cè)面調(diào)節(jié) 電阻材料:導(dǎo)電塑料 端接類型:PCB 引腳 觸動器長度:0.875"（22.22mm） 觸動器類型:開槽軸 觸動器直徑:0.125"（3.18mm） 尺寸 - 主體:方形 - 0.350" L x 0.492" W x 0.522" H（8.89mm x 12.50mm x 13.25mm） 安裝類型:通孔 包裝:散裝 |
| KA2541S28 | 功能描述:POT 250K OHM 2W LOG TAPER RoHS:是 類別:電位計，可變電阻器 >> 旋轉(zhuǎn) - 對數(shù) 系列:K 標準包裝:25 系列:51 電阻（歐姆）:10k 功率（瓦特）:0.25W，1/4W 容差:±20% 溫度系數(shù):±1000ppm/°C 匝數(shù):單路 旋轉(zhuǎn):290° 調(diào)節(jié)型:側(cè)面調(diào)節(jié) 電阻材料:導(dǎo)電塑料 端接類型:PCB 引腳 觸動器長度:0.875"（22.22mm） 觸動器類型:開槽軸 觸動器直徑:0.125"（3.18mm） 尺寸 - 主體:方形 - 0.350" L x 0.492" W x 0.522" H（8.89mm x 12.50mm x 13.25mm） 安裝類型:通孔 包裝:散裝 |
| KA258 | 功能描述:運算放大器 - 運放 Dual OP amp RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| KA258_Q | 功能描述:運算放大器 - 運放 Dual OP amp RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。