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EL2228CY Schematic ( PDF Datasheet ) - Elantec Semiconductor

Teilenummer EL2228CY
Beschreibung Dual Low Noise Amplifier
Hersteller Elantec Semiconductor
Logo Elantec Semiconductor Logo 




Gesamt 12 Seiten
EL2228CY Datasheet, Funktion
EL2228C - Preliminary
Dual Low Noise Amplifier
Features
• Voltage noise of only 4.9nV/Hz
• Current noise of only 1.2pA/Hz
• Bandwidth (-3dB) of 80MHz -
@AV = +1
• Gain-of-1 stable
• Just 4.5mA per amplifier
• 8-pin MSOP package
• ±2.5V to ±12V operation
Applications
• ADSL Filters
• HDSLII Filters
• Ultrasound input amplifiers
• Wideband Instrumentation
• Communications equipment
• Wideband sensors
General Description
The EL2228C is a dual, low-noise amplifier, ideally suited to filtering
applications in ADSL and HDSLII designs. It feature low noise speci-
fication of just 4.9nV/Hz and 1.2pA/Hz, making it ideal for
processing low voltage waveforms.
The EL2228C has a -3dB bandwidth of 80MHz and is gain-of-1 sta-
ble. It also affords minimal power dissipation with a supply current of
just 4.5mA per amplifier. The amplifier can be powered from supplies
ranging from ±2.5V to ±12V.
The EL2228C is available in a space saving 8-Pin MSOP package as
well as the industry standard 8-Pin SO. It can operate over the -40°C to
+85°C temperature range.
Ordering Information
Part No.
EL2228CY
EL2228CY-T13
EL2228CY-T7
EL2228CS
EL2228CS-T13
EL2228CS-T7
Temp. Range
8-Pin MSOP
8-Pin MSOP
8-Pin MSOP
8-Pin SO
8-Pin SO
8-Pin SO
Package
-
13”
7”
-
13”
7”
Outline #
MDP0043
MDP0043
MDP0043
MDP0027
MDP0027
MDP0027
Connection Diagram
VOUTA 1
8 VS+
VINA- 2
VINA+ 3
-
+
VS- 4
7 VOUTB
- 6 VINB-
+
5 VINB+
EL2228C
8-Pin SO and 8-Pin MSOP
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.
© 2001 Elantec Semiconductor, Inc.






EL2228CY Datasheet, Funktion
EL2228C - Preliminary
Dual Low Noise Amplifier
Typical Performance Curves
Peaking vs ±Supply Voltage for Non-inverting
Gains
1
0.8
G=1
VS=±12V
RF=420
RL=500
AV=+1
0.6
0.4
0.2 G=2
G=10
0
2.5 4.5
6.5 8.5
Supply Voltage (±V)
10.5
12.5
Small Signal Step Response
VS=±12V
RF=420
AV=1
RL=500
20mV/div
Peaking vs ±Supply Voltage for Inverting Gains
0.2
VS=±12V
RF=420
0.16 RL=500
AV=+1
0.12 G=-1
0.08
0.04
0
2.5
G=-2
G=-10
4.5 6.5 8.5 10.5
Supply Voltage (±V)
12.5
Small Signal Step Response
VS=±2.5V
RF=420
AV=1
RL=500
20mV/div
50ns/div
Large Signal Step Response
VS=±12V
0.5V/div
RF=420
AV=1
RL=500
50ns/div
Large Signal Step Response
VS=±2.5V
0.5V/div
RF=420
AV=1
RL=500
50ns/div
6
50ns/div

6 Page









EL2228CY pdf, datenblatt
EL2228C - Preliminary
Dual Low Noise Amplifier
General Disclaimer
Specifications contained in this data sheet are in effect as of the publication date shown. Elantec, Inc. reserves the right to make changes in the cir-
cuitry or specifications contained herein at any time without notice. Elantec, Inc. assumes no responsibility for the use of any circuits described
herein and makes no representations that they are free from patent infringement.
Elantec Semiconductor, Inc.
675 Trade Zone Blvd.
Milpitas, CA 95035
Telephone: (408) 945-1323
(888) ELANTEC
Fax: (408) 945-9305
European Office: +44-118-977-6020
Japan Technical Center: +81-45-682-5820
WARNING - Life Support Policy
Elantec, Inc. products are not authorized for and should not be used
within Life Support Systems without the specific written consent of
Elantec, Inc. Life Support systems are equipment intended to sup-
port or sustain life and whose failure to perform when properly used
in accordance with instructions provided can be reasonably
expected to result in significant personal injury or death. Users con-
templating application of Elantec, Inc. Products in Life Support
Systems are requested to contact Elantec, Inc. factory headquarters
to establish suitable terms & conditions for these applications. Elan-
tec, Inc.’s warranty is limited to replacement of defective
components and does not cover injury to persons or property or
other consequential damages.
12 Printed in U.S.A.

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