The EL4095C is a versatile variable-gain building block At its
core is a fader which can variably blend two inputs together and
an output amplifier that can drive heavy loads Each input ap-
pears as the input of a current-feedback amplifier and with ex-
ternal resistors can separately provide any gain desired The
output is defined as
V
OUT
e
A V
INA
(0 5V
a
V
GAIN
)
a
B V
INB
(0 5V –V
GAIN
)
where A and B are the fed-back gains of each channel
Additionally two logic inputs are provided which each override
the analog V
GAIN
control and force 100% gain for one input
and 0% for the other The logic inputs switch in only 25 ns and
provide high attenuation to the off channel while generating
very small glitches
Signal bandwidth is 60 MHz and gain-control bandwidth
20 MHz The gain control recovers from overdrive in only
70 ns
The EL4095C operates from
g
5V to
g
15V power supplies and
is available in both 14-pin DIP and narrow surface mount pack-
ages
Applications
Video faders wipers
Gain control
Graphics overlay
Video text insertion
Level adjust
Modulation
Ordering Information
Part No
Temp Range
Package
Outline
EL4095CN
b
40 C to
a
85 C 14 Pin P-DIP MDP0031
EL4095CS
b
40 C to
a
85 C SO-14
MDP0027
Connection Diagram
14-Pin DIP SO
August 1996 Rev D
4095 – 1
Top View
Manufactured under U S Patent No 5 321 371 5 374 898
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
1992 Elantec Inc
EL4095C
Video Gain Control Fader Multiplexer
Absolute Maximum Ratings
(T
A
e
25 C)
V
S
a
V
S
a
V
INA
a
V
INB
I
IN
V
GAIN
V
GAIN
TD is 0 7in
TD is 4 0in
Supply Voltage
Voltage between V
S
a
and V
S
b
Input Voltage
Current Into
b
V
INA
b
V
INB
Input Voltage
Input Voltage
a
18V
a
33V
(V
S
b
)
b
0 3V
to (V
S
a
)
a
0 3V
b
1V to
a
6V
V
FORCE
Input Voltage
g
35 mA
I
OUT
Output Current
b
40 C to
a
85 C
T
A
Operating Temperature Range
T
J
Operating Junction Temperature
0 C to
a
150 C
b
65 C to
a
150 C
T
ST
Storage Temperature Range
Internal Power Dissipation
See Curves
5 mA
V
GAIN
g
5V
V
S
b
to V
S
a
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
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