1
EL2082
Data Sheet
January 1996, Rev.D
FN7152
Current Mode Multiplier
The EL2082 is a general purpose
variable gain control building block,
built using an advanced proprietary
complementary bipolar process. It is a two-quandrant
multiplier, so that zero or negative control voltages do not
allow signal feedthrough and very high attenuation is
possible. The EL2082 works in current mode rather than
voltage mode, so that the input impedance is low and the
output impedance is high. This allows very wide bandwidth
for both large and small signals.
The I
IN
pin replicates the voltage present on the V
IN
pin;
therefore, the V
IN
pin can be used to reject common-mode
noise and establish an input ground reference. The gain
control input is calibrated to 1mA/mA signal gain for 1V of
control voltage. The disable pin (E) is TTL-compatible, and
the output current can comply with a wide range of output
voltages.
Because current signals rather than voltages are employed,
multiple inputs can be summed and many outputs wire-or'ed
or mixed.
The EL2082 operates from a wide range of supplies and is
available in standard 8-pin plastic DIP or 8-pin SO.
Features
Flexible inputs and outputs, all ground referred
150MHz large and small-signal bandwidth
46dB of calibrated gain control range
70dB isolation in disable mode @ 10MHz
0.15% diff gain and 0.05 diff phase performance at NTSC
using application circuit
Operates on 5V to 15V power supplies
Outputs may be paralleled to function as a multiplexer
Applications
Level adjust for video signals
Video faders and mixers
Signal routing multiplexers
Variable active filters
Video monitor contrast control
AGC
Receiver IF gain control
Modulation/demodulation
General "cold" front-panel control of AC signals
EL2082
(8-PIN SO, PDIP)
TOP VIEW
Ordering Information
PART
NUMBER
TEMP. RANGE
PACKAGE
PKG. NO.
EL2082CN
0C to +75C
8-Pin PDIP
MDP0031
EL2082CS
0C to +75C
8-Pin SO
MDP0027
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
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All other trademarks mentioned are the property of their respective owners.
OBSO
LETE
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DUCT
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MEND
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CEME
NT
conta
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r Tec
hnica
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enter
at
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-INTE
RSIL
or w
ww.in
tersil
.com
/tsc
2
EL2082
Absolute Maximum Ratings
(T
A
= 25C)
V
S
Voltage between V
S
+ and V
S
- . . . . . . . . . . . . . . .+33V
V
IN
, V
OUT
Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V
S
V
E
, V
GAIN
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . -1 to +7V
I
IN
Input Current . . . . . . . . . . . . . . . . . . . . . . . . . . . 5mA
P
D
Maximum Power Dissipation . . . . . . . . . . See Curves
T
A
Operating Temperature Range . . . . . . . 0C to +75C
T
J
Operating Junction Temperature . . . . . . . . . . . . 150C
T
ST
Storage Temperature . . . . . . . . . . . . . -65C to +150C
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise noted, all tests
are at the specified temperature and are pulsed tests, therefore: T
J
= T
C
= T
A
DC Electrical Specifications
V
S
= 15V, V
G
= 1V, V
E
= 0.8V, V
OUT
= 0, V
IN
= 0, I
IN
= 0
PARAMETER
DESCRIPTION
TEMP
MIN
TYP
MAX
UNITS
V
IO
Input Offset Voltage
Full
-20
20
mV
I
OO
Output Offset Current
Full
-100
100
A
R
INI
I
IN
Input Impedance; I
IN
= 0, 0.35mA
Full
75
95
115
V
CMRR
Voltage Common-Mode Rejection Ratio, V
IN
= -10V, +10V
Full
45
55
dB
I
CMRR
Offset Current Common-Mode Rejection Ratio, V
IN
= -10V, +10V
Full
0.5
5
A/V
V
PSRR
Offset Voltage Power Supply Rejection Ratio, V
S
= 5V to 15V
Full
60
80
dB
I
PSRR
Offset Current Power Supply Rejection Ratio, V
S
= 5V to 15V
Full
1
10
A/V
I
BVIN
V
IN
Bias Current
Full
-10
10
A
R
INV
V
IN
Input Impedance; V
IN
= -10V, +10V
Full
0.5
1.0
M
Nlini
Signal Nonlinearity; I
IN
= -0.7mA, -0.35mA, 0mA, +0.35mA, +0.7mA
Full
0.10
0.4
%
R
OUT
Output Impedance V
OUT
= -10V, +10V
Full
0.25
0.5
M
V
OUT
Output Swing; V
GAIN
= 2V, I
IN
2 mA, R
L
= 4.0k
Full
-11
+11
V
V
IOG
V
OS
, Gain Control, Extrapolated from V
GAIN
= 0.1V, 1V
Full
-15
15
mV
A
I
Current Gain, I
IN
350A
Full
0.9
1.0
1.1
mA/mA
Nling
Nonlinearity of Gain Control, V
GAIN
= 0.1V, 0.5V, 1V
Full
2
5
%
I
SO
Input Isolation with V
GAIN
= -0.1V
Full
-80
-96
dB
V
INH
E Logic High Level
Full
2.0
V
V
INL
E Logic Low Level
Full
0.8
V
I
LH
Input Current of E, V
E
= 5V
Full
-50
50
A
I
LL
Input Current of E, V
E
= 0
Full
-50
50
A
I
ODIS
I
OUT
, Disabled E = 2.0V
Full
10
A
I
S
Supply Current
Full
13
16
mA
3
EL2082
AC Electrical Specifications
R
L
= 25
, C
L
= 4pF, C
IN
= 2pF, T
A
= 25C, V
G
= 1V, V
S
= 15V
PARAMETER
DESCRIPTION
MIN
TYP
MAX
UNITS
BW1
Current Mode Bandwidth -3dB
150
MHz
BW2
0.1dB
30
MHz
BWp
Power, I
IN
= 1mA
P-P
150
MHz
BWg
Gain Control Bandwidth
20
MHz
SRG
Gain Control Slew Rate V
G
from 0.2V to 2V
12
(mA/mA)/s
T
REC
Recovery Time from V
G
< 0
250
ns
T
EN
Enable Time from E Pin
200
ns
T
DIS
Disable Time from E Pin
30
ns
D
G
Differential Gain, NTSC with I
IN
= -0.35mA to +0.35mA
0.25
%
D
P
Differential Phase, NTSC with I
IN
= -0.35mA to +0.35mA
0.05
Degree
4
Typical Performance Curves
Current Gain vs
Frequency for Different Gains
Current Gain
vs Frequency
Current Gain Flatness
Frequency Response in
Voltage Input Mode
Harmonic Distortion vs
Input Amplitude
Output Current Noise
vs Frequency
EL2082
5
Typical Performance Curves
(Continued)
Differential Gain Error
vs DC Offset Current
Differential Phase Error vs
DC Offset Current
Gain Pin Transient Response
Gain Control Recovery From Vg = -0.1V
Gain Control Pin
Frequency Response
I
OUT
vs I
IN
Normalized Gain Error
vs V
GAIN
Voltage
EL2082
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