EL2009C
90 MHz 1 Amp Buffer Amplifier
Features
# High slew rateÐ3000 V/ms
General Description
The EL2009 is a patented high speed bipolar monolithic buffer
amplifier designed to provide currents over 1 amp at high fre-
quencies, while drawing 40 mA of quiescent supply current. The
EL2009’s 3000 V/ms slew rate and 90 MHz bandwidth driving a
10X load insures stability in fast op amp feedback loops. Elan-
tec has applied for patents on unique circuitry within the
EL2009.
# Wide bandwidthÐ
@
e
50X
10X
125 MHz
90 MHz
R
L
e
@
R
L
# Output currentÐ1A continuous
# Output impedanceÐ1X
# Short circuit protected
# Power package with isolated
metal tab
Used as an open loop buffer, the EL2009’s low output imped-
ance (1X) gives a gain of 0.99 when driving a 100X load and 0.9
driving a 10X load.
Applications
The EL2009 has an output short circuit current limit which will
protect the device under both a DC fault condition and AC op-
eration with reactive loads.
# Video distribution amplifier
# Fast op amp booster
# Flash converter driver
# Motor driver
# Pulse transformer driver
# A.T.E. pin driver
The EL2009 is constructed using Elantec’s proprietary Comple-
mentary Bipolar process that produces PNP and NPN transis-
tors with essentially identical AC and DC characteristics. In the
EL2009, the Complementary Bipolar process also insulates the
package’s metal heat sink tab from all supply voltages. There-
fore, the tab may be mounted to an external heat sink or the
chassis without an insulator.
Ordering Information
Ý
Part No. Temp. Range Package Outline
a
a
EL2009CT 0 C to 75 C
The EL2009CT is specified for operation over the 0 C to 75 C
§
TO-220 MDP0028
§
§
§
temperature range and is provided in a 5-lead TO-220 plastic
power package.
Connection Diagram
Simplified Schematic
5-Pin TO-220
2009–1
Top View
2009–2
Manufactured under U.S. Patent No. 4,833,424 and 4,827,223 and U.K. Patent No.
2217134.
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.