EL4095C
August
1996
Rev
D
EL4095C
Video Gain Control Fader Multiplexer
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
Features
Full function video fader
0 02% 0 02 differential gain
phase
100% gain
25 ns multiplexer included
Output amplifier included
Calibrated linear gain control
g
5V to
g
15V operation
60 MHz bandwidth
Low thermal errors
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
General Description
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
Connection Diagram
14-Pin DIP SO
4095 1
Top View
Manufactured under U S Patent No 5 321 371 5 374 898
EL4095C
Video Gain Control Fader Multiplexer
Absolute Maximum Ratings
(T
A
e
25 C)
V
Sa
Supply Voltage
a
18V
V
S
Voltage between V
S
a
and V
S
b
a
33V
a
V
INA
Input Voltage
(V
S
b
)
b
0 3V
a
V
INB
to (V
S
a
)
a
0 3V
I
IN
Current Into
b
V
INA
b
V
INB
5 mA
V
GAIN
Input Voltage
V
GAIN
g
5V
V
GAIN
Input Voltage
V
S
b
to V
S
a
V
FORCE
Input Voltage
b
1V to
a
6V
I
OUT
Output Current
g
35 mA
T
A
Operating Temperature Range
b
40 C to
a
85 C
T
J
Operating Junction Temperature
0 C to
a
150 C
T
ST
Storage Temperature Range
b
65 C to
a
150 C
Internal Power Dissipation
See Curves
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
Test Procedure
I
100% production tested and QA sample tested per QA test plan QCX0002
II
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
III
QA sample tested per QA test plan QCX0002
IV
Parameter is guaranteed (but not tested) by Design and Characterization Data
V
Parameter is typical value at T
A
e
25 C for information purposes only
Open Loop DC Electrical Characteristics
V
S
e
g
15V T
A
e
25 C V
GAIN
ground unless otherwise specified
Parameter
Description
Limits
Test
Units
Min
Typ
Max
Level
V
OS
Input Offset Voltage
1 5
5
I
mV
I
Ba
a
V
IN
Input Bias Current
5
10
I
mA
I
Bb
b
V
IN
Input Bias Current
10
50
I
mA
CMRR
Common Mode Rejection
65
80
I
dB
b
CMRR
b
V
IN
Input Bias Current
0 5
1 5
I
mA V
Common Mode Rejection
PSRR
Power Supply Rejection Ratio
65
95
I
dB
b
IPSR
b
V
IN
Input Current
0 2
2
I
mA V
Power Supply Rejection Ratio
R
OL
Transimpedance
0 2
0 4
I
M
X
R
INb
b
V
IN
Input Resistance
80
V
X
V
IN
a
V
IN
Range
(V
b
)
a
3 5
(V
a
)
b
3 5
I
V
V
O
Output Voltage Swing
(V
b
)
a
2
(V
a
)
b
2
I
V
I
SC
Output Short-Circuit Current
80
125
160
I
mA
V
IH
Input High Threshold at
2 0
I
V
Force A or Force B Inputs
V
IL
Input Low Threshold at
0 8
I
V
Force A or Force B Inputs
I
FORCE
High
Input Current of Force A
b
50
I
mA
or Force B V
FORCE
e
5V
I
FORCE
Low
Input Current of Force A
b
440
b
650
I
mA
or Force B V
FORCE
e
0V
2
TD
is
07in
TD
is
40in
EL4095C
Video Gain Control Fader Multiplexer
Open Loop DC Electrical Characteristics
Contd
V
S
e
g
15V T
A
e
25 C unless otherwise specified
Parameter
Description
Limits
Test
Units
Min
Typ
Max
Level
Feedthrough
Feedthrough of Deselected Input to Output
60
75
I
dB
Forced
Deselected Input at 100% Gain Control
V
GAIN
100%
Minimum Voltage at
0 45
0 5
0 55
I
V
V
GAIN
for 100% Gain
V
GAIN
0%
Maximum Voltage at
b
0 55
b
0 5
b
0 45
I
V
V
GAIN
for 0% Gain
NL Gain
Gain Control Non-linearity
2
4
I
%
V
IN
e
g
0 5V
R
IN
VG
Impedance between V
GAIN
and V
GAIN
4 5
5 5
6 5
I
k
X
NL A
V
e
1
Signal Non-linearity V
IN
e
g
1V V
GAIN
e
0 55V
k
0 01
V
%
A
V
e
0 5
Signal Non-linearity V
IN
e
g
1V V
GAIN
e
0V
0 03
V
%
A
V
e
0 25
Signal Non-linearity V
IN
e
g
1V V
GAIN
e b
0 25V
0 07
0 4
I
%
I
S
Supply Current
17
21
I
mA
Closed Loop AC Electrical Characteristics
V
S
e
g
15V A
V
e a
1 R
F
e
R
IN
e
1 k
X R
L
e
500
X C
L
e
15 pF C
IN
b e
2 pF T
A
e
25 C A
V
e
100% unless otherwise
noted
Parameter
Description
Limits
Test
Units
Min
Typ
Max
Level
SR
Slew Rate V
OUT
from
b
3V to
a
3V
330
V
V
ms
Measured at
b
2V and
a
2V
BW
Bandwidth
b
3 dB
60
MHz
b
1 dB
30
V
MHz
b
0 1 dB
6
MHz
dG
Differential Gain AC Amplitude of 286 mV
p-p
at 3 58 MHz on DC Offset of
b
0 7V 0V and
a
0 7V
A
V
e
100%
0 02
V
%
A
V
e
50%
0 07
%
A
V
e
25%
0 07
%
d
i
Differential Phase AC Amplitude of 286 mV
p-p
at 3 58 MHz on DC Offset of
b
0 7V 0V and
a
0 7V
A
V
e
100%
0 02
V
A
V
e
50%
0 05
A
V
e
25%
0 15
T
S
Settling Time to 0 2% V
OUT
from
b
2V to
a
2V
A
V
e
100%
100
V
ns
A
V
e
25%
100
ns
T
FORCE
Propagation Delay from V
FORCE
e
1 4V to 50%
25
V
ns
Output Signal Enabled or Disabled Amplitude
BW Gain
b
3 dB Gain Control Bandwidth
20
V
MHz
V
GAIN
Amplitude 0 5 V
P-P
T
REC
Gain
Gain Control Recovery from Overload
70
V
ns
V
GAIN
from
b
0 7V to 0V
3
TD
is
24in
TD
is
38in
EL4095C
Video Gain Control Fader Multiplexer
Typical Performance Curves
Large-Signal Pulse
Response Gain e a1
4095 6
Large-Signal Pulse
Response Gain e b1
4095 7
Small-Signal Pulse Response
for Various Gains
4095 8
Frequency Response for Different
Gains-A
V
e
a
1
4095 9
Frequency Response with Different
Values of R
F
b
Gain e a1
4095 10
Frequency Response with Different
Values of R
F
b
Gain e b1
4095 11
4
EL4095C
Video Gain Control Fader Multiplexer
Typical Performance Curves
Contd
Frequency Response with Different Gains
Load Capacitances and Resistances
Frequency Response with Various
Values of Parasitic C
INb
Frequency Response with Various
Current vs Frequency
Input Noise Voltage and
Supply Voltage b Gain e a1
Change in Bandwidth and Slewrate with
Supply Voltage b Gain e b1
Change in Bandwidth and Slewrate with
4095 12
5
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