EL2082C Datasheet, PDF (1/16 Pages) Elantec Semiconductor – Current-Mode Multiplier

EL2082C
Current-Mode Multiplier
Features
 Flexible inputs and outputs all
ground referred
 150 MHz large and small-signal
bandwidth
 46 dB of calibrated gain control
range
 70 dB isolation in disable mode
10 MHz
 0 15% diff gain and 0 05 diff
phase performance at NTSC
using application circuit
 Operates on g5V to g15V 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
Ordering Information
Part No Temp Range Package Outline
EL2082CN 0 C to a75 C 8-Pin P-DIP MDP0031
EL2082CS 0 C to a75 C 8-Pin SO
MDP0027
General Description
The EL2082 is a general purpose variable gain control building
block built using an advanced proprietary complementary bi-
polar 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 there-
fore 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 1 mA 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 mul-
tiple inputs can be summed and many outputs wire-or’ed or
mixed
The EL2082 operates from a wide range of supplies and is avail-
able in standard 8-pin plastic DIP or 8-lead SO
Connection Diagram
8-Pin DIP SO
Top View
2082 – 1
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