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器件描述：Monolithic Video Buffer/Clamp
器件厂商：GENNUM [Gennum Corporation]
厂商主页：http://www.gennum.com
文件大小：149.35KB
文件页数：5
PDF阅读：GB4570.pdf (点击阅读器件资料)
摘要：
The GB4570 is a high performance video buffer/clamp used
primarily for sync tip clamping of video signals. Key features
include operation from ± 4.5 to ±13.2 V supply voltages, ±0.1
dB flatness to 80 MHz and availability of industry standard DIP
and SOIC packages.
In a typical video application, the GB4570 clamps the sync tip
to a known voltage. The clamping level can be set for normal
sync tip clamping by connecting pin 3 to - 0.286 volts. For
applications requiring non-standard sync tip clamping, the
clamping voltage applied to pin 3 may be varied.
The GB4570 features a tight delay spread of only ± 0.15° at
color burst frequencies and less than ± 1 millivolts clamping
distortion.
? Sync tip clamping of NTSC, PAL, SECAM and RGB
Video Signals
? Input buffering and clamping
? Inter-system video signal clamping
DATA SHEET
GENNUM CORPORATION P.O. Box 489, Stn A, Burlington, Ontario, Canada L7R 3Y3 tel. (905) 632-2996 fax: (905) 632-2055
Japan Branch: A-302, Miyamae Village, 2-10-42, Miyamae, Suginami-ku, Tokyo 168, Japan tel. (03) 3247-8838 fax. (03) 3247-8839
GB4570 Monolithic
Video Buffer/Clamp
FEATURES DESCRIPTION
8 pin PDIP
8 pin SOIC
AVAILABLE PACKAGING
PIN CONNECTIONS
GND
V
IN
V
CLAMP
C
HOLD
V
CC
V
OUT
V
EE
NC
Document No. 521 - 18 - 01
? accurate sync tip clamping (± 2 mV typical)
? less than 1 mV clamping distortion
? variable clamping voltage (V
EE
+ 3 V to V
CC
-4.5 V)
? ultra low differential gain and differential phase
? less than ± 0.15° phase delay variation at 3.58 MHz
? ± 0.1 dB flatness to 80 MHz
? ± 4.5 to ±13.2 V supply voltage range
1
2
3
4
8
7
6
5
GB4570
APPLICATIONS
SIMPLIFIED CIRCUIT DIAGRAM
V
CC
V
EE
50k
V
IN
COUPLING
CAP
V
OUT
V
CLAMP
C
HOLD
-
+
7
3
6
4
2
8
ORDERING INFORMATION
Part Number Package Temperature Range
GB4570-CDA 8 pin PDIP 0° to 70°C
GB4570-CKA 8 pin SOIC 0° to 70°C
GB4570-CTA 8 pin SOIC Tape 0° to 70°C
相关器件：GB4570-CDA GB4570-CKA GB4570-CTA GB4570-CTA GB4570-CKA GB4570-CDA GB4570
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