參數(shù)資料
型號: LT1204CSW#PBF
廠商: Linear Technology
文件頁數(shù): 10/20頁
文件大?。?/td> 0K
描述: IC VIDEOMUX CFA 75MHZ 4IN 16SOIC
標(biāo)準(zhǔn)包裝: 47
應(yīng)用: 4:1 多路復(fù)用器-放大器
電路數(shù): 1
-3db帶寬: 75MHz
轉(zhuǎn)換速率: 1000 V/µs
電流 - 電源: 19mA
電流 - 輸出 / 通道: 125mA
電壓 - 電源,單路/雙路(±): 10 V ~ 30 V,±5 V ~ 15 V
安裝類型: 表面貼裝
封裝/外殼: 16-SOIC(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 16-SOIC
包裝: 管件
產(chǎn)品目錄頁面: 1356 (CN2011-ZH PDF)
18
LT1204
U
S
A
O
PPLICATI
TYPICAL
CABLE
OUTPUT
LT1204
#2 OUTPUT
A0 PIN 9
1204 TA05
Differential Receiver Switching Waveforms
FREQUENCY (Hz)
–60
DIFFERENTIAL
RECEIVER
RESPONSE
(dB)
–40
–20
0
20
10k
1M
10M
100M
1204 TA06
100k
VS = ±15V
RL = 100
DIFFERENTIAL MODE RESPONSE
COMMON MODE RESPONSE
4-Input Twisted-Pair Driver
It is possible to send and receive color composite video
signals appreciable distances on a low cost twisted pair.
The cost advantage of this technique is significant. Stan-
dard 75
RG-59/U coaxial cable cost between 25 and
50 per foot. PVC twisted pair is only pennies per foot.
Differential signal transmission resists noise because the
interference is present as a common mode signal. The
LT1204 can select one of four video cameras for instance,
and drive the video signal on to the twisted pair. The circuit
uses an LT1227 current feedback amplifier connected with
a gain of – 2, and an LT1204 with a gain of 2. The 47
resistors back-terminate the low cost cable in its charac-
teristic impedance to prevent reflections. The receiver for
the differential signal is an LT1193 connected for a gain of
2. Resistors R1, R2 and capacitors C1, C2 are used for
cable compensation for loss through the twisted pair.
Alternately, a pair of LT1204s can be used to perform the
differential to single-ended conversion.
Multiburst Pattern Passed Through 1000 Feet of Twisted Pair,
No Cable Compensation
Multiburst Pattern Passed Through 1000 Feet of Twisted Pair,
with Cable Compensation
1204 TA08
OUTPUT
INPUT
OUTPUT
1204 TA09
Differential Receiver Response
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