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參數(shù)資料
| 型號(hào)： | LT1195CS8#TR |
| 廠(chǎng)商： | Linear Technology |
| 文件頁(yè)數(shù)： | 12/12頁(yè) |
| 文件大小： | 0K |
| 描述： | IC AMP VIDEO HI SPEED LP 8SOIC |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 應(yīng)用： | 通用 |
| 電路數(shù)： | 1 |
| 轉(zhuǎn)換速率： | 165 V/µs |
| 電流 - 電源： | 12mA |
| 電流 - 輸出 / 通道： | 20mA |
| 電壓 - 電源，單路/雙路(±)： | 4.75 V ~ 16 V，±2.38 V ~ 8 V |
| 安裝類(lèi)型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-SOIC |
| 包裝： | 帶卷 (TR) |
9
LT1195
1195fa
APPLICATIO S I FOR ATIO
WU
UU
Output Shutdown
–
+
LT1195
75
RFB
1k
5V
1195 AI05
3
2
7
4
6
75
1000F
10k
10F
1k
5V
RG
1k
VIN
R2
2k
100F
R1
3k
Video Multiburst at Pin 6 of Amplifier
Detecting Pulses
The front page shows a circuit for detecting very fast
pulses. In this open-loop design, the detector diode is D1
and a level shifting or compensating diode is D2. A load
resistor RL is connected to –5V, and an identical bias
resistor RB is used to bias the compensating diode. Equal
value resistors ensure that the diode drops are equal. A
very fast pulse will exceed the amplifier slew rate and
cause a long overload recovery time. Some amount of
dV/dt limiting on the input can help this overload condi-
tion, however too much will delay the response. Also
shown is the response to a 4VP-P input that is 150ns wide.
The maximum output slew rate in the photo is 30V/s. This
rate is set by the 30mA current limit driving 1000pF.
Operation on Single 5V Supply
The LT1195 has been optimized for a single 5V supply.
This circuit amplifies standard composite video (1VP-P
including sync) by 2 and drives a double-terminated 75
cable. Resistors R1 and R2 bias the amplifier at 2V,
allowing the sync pulses to stay within the common mode
range of the amplifier. Large coupling capacitors are
required to pass the low frequency sidebands of the
composite signal. A multiburst response and vector plot
standard color burst are shown.
Single 5V Video Amplifier
1195 AI04
1MHz SINE WAVE GATED OFF WITH SHUTDOWN PIN
AV = 1, RL = 1k
Vector Plot of Standard Color Burst
1195 AI06
3V
2V
1V
0V
1195 AI07
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