EL2125C
Ultra-Low Noise, Low Power, Wideband Amplifier
Features
General Description
• Voltage noise of only 0.83nV/√Hz
• Current noise of only 2.4pA/√Hz
• 200µV offset voltage
The EL2125C is an ultra-low noise, wideband amplifier that runs on
half the supply current of competitive parts. It is intended for use in
systems such as ultrasound imaging where a very small signal needs to
be amplified by a large amount without adding significant noise. Its
low power dissipation enables it to be packaged in the tiny SOT23
package, which further helps systems where many input channels cre-
ate both space and power dissipation problems.
• 175MHz -3dB BW for A =10
V
• Low supply current - 10mA
• SOT23 package available
•
2.5V to 15V operation
The EL2125C is stable for gains of 10 and greater and uses traditional
voltage feedback. This allows the use of reactive elements in the feed-
back loop, a common requirement for many filter topologies. It
operates from 2.5V to 15V supplies and is available in the 5-pin
SOT23 and 8-pin SO packages.
Applications
• Ultrasound input amplifiers
• Wideband instrumentation
• Communication equipment
• AGC & PLL active filters
• Wideband sensors
The EL2125C is fabricated in Elantec’s proprietary complementary
bipolar process, and is specified for operation from -45°C to +85°C.
Ordering Information
Part No
EL2125CW-T7
EL2125CW-T13
EL2125CS
Package
5-Pin SOT23
5-Pin SOT23
8-Pin SO
Tape & Reel
Outline #
MDP0038
MDP0038
MDP0027
MDP0027
MDP0027
7”
13”
-
Connection Diagrams
EL2125CS-T7
EL2125CS-T13
8-Pin SO
7”
8-Pin SO
13”
NC
IN-
IN+
VS-
1
2
3
4
8
7
6
5
NC
OUT
VS-
IN+
1
2
3
5
4
VS+
IN-
VS+
OUT
NC
-
+
+
-
EL2125CW
(5-Pin SOT23)
EL2125CS
(8-Pin SO)
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.
© 2002 Elantec Semiconductor, Inc.
ELANTEC [ ELANTEC SEMICONDUCTOR ]
