EL2020C
50 MHz Current Feedback Amplifier
Features
# Slew rate 500 V/ms
General Description
The EL2020 is a fast settling, wide bandwidth amplifier opti-
b
a
mized for gains between 10 and 10. Built using the Elantec
monolithic Complementary Bipolar process, this amplifier uses
current mode feedback to achieve more bandwidth at a given
gain then a conventional voltage feedback operational amplifi-
er.
g
#
33 mA output current
g
# Drives 2.4V into 75X
k
# Differential phase 0.1
§
k
# Differential gain 0.1%
g
g
# V supply 5V to 18V
The EL2020 will drive two double terminated 75X coax cables
to video levels with low distortion. Since it is a closed loop de-
vice, the EL2020 provides better gain accuracy and lower distor-
tion than an open loop buffer. The device includes output short
circuit protection, and input offset adjust capability.
# Output short circuit protected
# Uses current mode feedback
# 1% settling time of 50 ns for 10V
step
The bandwidth and slew rate of the EL2020 are relatively inde-
pendent of the closed loop gain taken. The 50 MHz bandwidth
at unity gain only reduces to 30 MHz at a gain of 10. The
EL2020 may be used in most applications where a conventional
op amp is used, with a big improvement in speed power prod-
uct.
# Low cost
# 9 mA supply current
# 8-pin mini-dip
Applications
# Video gain block
# Residue amplifier
# Radar systems
Elantec products and facilities comply with Elantec document,
QRA-1: Processing-Monolithic Products.
# Current to voltage converter
Connection Diagrams
# Coax cable driver with
gain of 2
SOL
Ordering Information
Ý
Part No.
EL2020CN
EL2020CM
Temp. Range
Pkg. Outline
b
b
a
40 C to 85 C P-DIP MDP0031
§
§
a
40 C to 85 C 20-Lead MDP0027
§
§
SOL
2020–2
DIP
2020–1
Manufactured under U.S. Patent No. 4,893,091.
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.
©
1989 Elantec, Inc.
ELANTEC [ ELANTEC SEMICONDUCTOR ]
