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參數(shù)資料
| 型號： | GB4551-CSA |
| 英文描述： | Analog Buffer/Voltage Follower |
| 中文描述： | 模擬緩沖器/電壓跟隨 |
| 文件頁數(shù)： | 5/5頁 |
| 文件大?。?/td> | 140K |
| 代理商： | GB4551-CSA |
5
520 - 52 - 2
Gennum Corporation assumes no responsibility for the use of any circuits described herein and makes no representations that they are free from patent infringement.
Copyright June 1992 Gennum Corporation. All rights reserved. Printed in Canada.
DOCUMENT
IDENTIFICATION
PRODUCT PROPOSAL
This data has been compiled for market investigation purposes
only, and does not constitute an offer for sale.
ADVANCE INFORMATION NOTE
This product is in development phase and specifications are
subject to change without notice. Gennum reserves the right to
remove the product at any time. Listing the product does not
constitute an offer for sale.
PRELIMINARY DATA SHEET
The product is in a preproduction phase and specifications are
subject to change without notice.
DATA SHEET
The product is in production. Gennum reserves the right to make
changes at any time to improve reliability, function or design, in
order to provide the best product possible.
The above circuit represents a possible use of the GB4551 as
an input back-porch clamp for video mixers in a simple
Production Switcher. For simplicity, the STROBE input is
derived from the GS4881 sync separator IC, driven from the
composite input signal.
The value of R
OUT
is chosen to roll-off the frequency response
of the GB4551. The value is usually between 15 and 47 ohms
depending on the total load capacitance seen by the device.
The GB4551 may be used anywhere in the circuit where
accurate DC restoration is required as shown by the second IC
following the output of the top GT4123.
COMPOSITE
VIDEO INPUT
COLOR BURST
FILTER
680k
-
10V
10
NON-POLAR
470p
+5V
+10V
4 2 6
1 8
5 3 7
COMPOSITE
VIDEO INPUT
R
OUT
VID B
VID A
CONTROL
OUT
0.1
6
4
8
5
2
STROBE
TO OTHER
GB4551s
BORDER
INPUT FROM
(GB4551)
OUT
VID B
VID A
CONTROL
BACKGROUND
VIDEO IN
(FROM GB4551)
KEY INPUT
VID B
VID A
CONTROL
INSERT
GB4551
STROBE
VIDEO
OUTPUT 1
VIDEO
OUTPUT 2
BACK
PORCH
PULSE
5V
0V
3
5
1
7
3
5
1
7
3
5
1
7
GT4123
GT4123
GT4123
0.1
0.1
0.1
0.1
GS4881
SYNC. SEP.
APPLICATION CIRCUIT
Fig. 7 GB4551 Driving Several GT4123 Video Mixers
All resistors in ohms, all capacitors
in microfarads unless otherwise stated.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| GB4600 | Wideband Unity Gain Voltage Follower |
| GB4600-CDA | Analog Buffer/Voltage Follower |
| GB4600-CKA | Analog Buffer/Voltage Follower |
| GB570 | GB570 - DynamEQ? II WDRC IC |
| GC570 | GC570 - DynamEQ? II WDRC IC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| GB4570 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Monolithic Video Buffer/Clamp |
| GB4570-CDA | 制造商:GENNUM 制造商全稱:GENNUM 功能描述:Monolithic Video Buffer/Clamp |
| GB4570-CKA | 制造商:GENNUM 制造商全稱:GENNUM 功能描述:Monolithic Video Buffer/Clamp |
| GB4570-CTA | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Monolithic Video Buffer/Clamp |
| GB4571 | 制造商:GENNUM 制造商全稱:GENNUM 功能描述:Video Buffer with Precision Strobed DC Restore |
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