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EL4093
January 1996, Rev B
FN7159
300MHz DC-Restored Video Amplifier
Features
The EL4093 is a complete DCrestored video amplifier subsystem,
featuring low power consumption and
high slew rate. It contains a current feedback amplifier and a
sample and hold amplifier designed to stabilize video
performance. When the HOLD logic input is low, the sample
and hold may be used as a general purpose op amp to null
the DC offset of the video amplifier. When the HOLD input
goes high the sample and hold stores the correction voltage
on the hold capacitor to maintain DC correction during the
subsequent video scan line.
• High accuracy DC restoration for video
The sample and hold amplifier contains a current output
stage that greatly simplifies its connection to the video
amplifier. Its high output impedance also helps to preserve
video linearity at low supply voltages. For ease of interfacing,
the HOLD input is TTL-compatible. This device has an
operational temperature of -40°C to +85°C and is packaged
in plastic 16-pin DIP and 16-pin SOIC.
• TTL-compatible HOLD logic input
Pinout
• Low supply current of 9.5mA typ.
• 300MHz bandwidth
• 1500V/µs slew rate
• 0.04% differential gain and 0.02° differential phase into
150Ω for NTSC
• 1.5mV max. restored DC offset
• Sample and hold amplifier with fast enable and low
leakage
Applications
• Input amplifier in video equipment
• Restoration amplifier in video mixers
Ordering Information
PART
NUMBER
EL4093
(16-PIN PDIP, SO)
TOP VIEW
TEMP. RANGE
PACKAGE
PKG. NO.
EL4093CN
-40°C to +85°C
16-Pin PDIP
MDP0031
EL4093CS
-40°C to +85°C
16-Pin SOIC
MDP0027
Demo Board
A demo PCB is available for this product. Request “EL4093
Demo Board.”
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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