The EL4451C is a complete variable gain circuit It offers wide
bandwidth and excellent linearity while including a powerful
output voltage amplifier drawing modest supply current
The EL4451C operates on
g
5V to
g
15V supplies and has an
analog input range of
g
2V making it ideal for video signal
processing AC characteristics do not change appreciably over
the
g
5V to
g
15V supply range
The circuit has an operational temperature range of
b
40 C to
a
85 C and is packaged in plastic 14-pin DIP and 14-lead SO
The EL4451C is fabricated with Elantec’s proprietary comple-
mentary bipolar process which provides excellent signal sym-
metry and is free from latch up
Applications
Leveling of varying inputs
Variable filters
Fading
Text insertion into video
Connection Diagram
Outline
MDP0031
MDP0027
Ordering Information
Part No
Temp Range
Package
EL4451CN
b
40 C to
a
85 C 14-Pin P-DIP
EL4451CS
b
40 C to
a
85 C
14-Lead SO
4451-1
October 1994 Rev A
Note
All information contained in this data sheet has been carefully checked and is believed to be accurate as of the date of publication however this data sheet cannot be a ‘‘controlled document’’ Current revisions if any to these
specifications are maintained at the factory and are available upon your request We recommend checking the revision level before finalization of your design documentation
1994 Elantec Inc
EL4451C
Wideband Variable-Gain Amplifier Gain of 2
Absolute Maximum Ratings
(T
A
e
25 C)
V
a
V
S
V
IN
DV
IN
I
IN
Positive Supply Voltage
V
a
to V
b
Supply Voltage
Voltage at any Input or Feedback
Difference between Pairs
of Inputs or Feedback
Current into any Input or Feedback Pin
16 5V
33V
V
a
to V
b
6V
4mA
I
OUT
P
D
T
A
T
S
Continuous Output Current
Maximum Power Dissipation
Operating Temperature Range
Storage Temperature Range
30mA
See Curves
b
40 C to
a
85 C
b
60 C to
a
150 C
Important Note
All parameters having Min Max specifications are guaranteed The Test Level column indicates the specific device testing actually
performed during production and Quality inspection Elantec performs most electrical tests using modern high-speed automatic test
equipment specifically the LTX77 Series system Unless otherwise noted all tests are pulsed tests therefore T
J
e
T
C
e
T
A
Test Level
I
II
III
IV
V
Test Procedure
100% production tested and QA sample tested per QA test plan QCX0002
100% production tested at T
A
e
25 C and QA sample tested at T
A
e
25 C
T
MAX
and T
MIN
per QA test plan QCX0002
QA sample tested per QA test plan QCX0002
Parameter is guaranteed (but not tested) by Design and Characterization Data
Parameter is typical value at T
A
e
25 C for information purposes only
Open-Loop DC Electrical Characteristics
Power Supplies at
g
5V
Parameter
V
DIFF
V
CM
V
OS
V
OS
FB
V
G 100%
V
G 0%
V
G 1V
I
B
I
OS
NL
Ft
R
IN
V
IN
R
IN
FB
R
IN
R
GAIN
Description
Signal input differential input voltage - Clipping
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