EL4083C
Current Mode Four Quadrant Multiplier
Features
General Description
The 4083C makes use of an Elantec fully complimentary oxide
isolated bipolar process to produce a patent pending current in,
current out four quadrant multiplier. Input and output signal
summing and direct interface to other current mode devices can
be accomplished by simple connection to reduce component
count and preserve bandwidth. The selection of an appropriate
series resistor value allows an input to accept a voltage signal of
any size and optimize dynamic range. The differential outputs
offer significant performance improvements which greatly ex-
tend the usable gain control range at high frequencies. The bias
current is programmable to accommodate the voltage and pow-
er dissipation constraints of the package and available systems
supplies.
# Novel current mode design
Virtual ground current summing
inputs
Differential ground referenced
current outputs
# High speed (both inputs)
200 MHz bandwidth
12 ns 1% settling time
# Low distortion
THD 0.03% 1 MHz
k
@
k
@
THD 0.1% 10 MHz
e
100 dB dynamic range
# Low noise (R
50X)
L
10 Hz to 20 kHz
73 dB dynamic range
10 Hz to 10 MHz
The devices can implement all the classic four quadrant multi-
plier applications and are uniquely well suited to gain control
and signal summing of broadband signals.
# Wide supply conditions
g
Programmable bias current
g
5 to 15V operation
Connection Diagram
# 0.2 dB gain tolerance to 25 MHz
EL4083
8-Pin SO/P DIP
Applications
# Four quadrant multiplication
# Gain control
# Controlled signal summing and
multiplexing
# HDTV video fading and
switching
4083–1
Top View
# Mixing/modulating/
demodulating (phase detection)
# Frequency doubling
# Division
# Squaring
# Square rooting
# RMS and power measurement
# Vector addition-RMS summing
# CRT focus and geometry
correction
# Polynomial function generation
# AGC circuits
Ordering Information
Ý
Outline
Part No.
EL4083CN
EL4083CS
Temp. Range
Package
b
a
40 C to 85 C 8-Pin P-DIP MDP0031
§
§
b
a
40 C to 85 C 8-Pin SO
MDP0027
§
§
Manufactured under U.S. Patent No. 5,389,840
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.
©
1993 Elantec, Inc.
ELANTEC [ ELANTEC SEMICONDUCTOR ]
