EL2125

Ultra-Low Noise, Low Power, Wideband Amplifier

Product Status: Mass Production

OVERVIEW

The EL2125 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 SOT-23 package, which further helps systems where many input channels create both space and power dissipation problems.

The EL2125 is stable for gains of 10 and greater and uses traditional voltage feedback. This allows the use of reactive elements in the feedback loop, a common requirement for many filter topologies. It operates from ±2.5V to ±15V supplies and is available in the 5 Ld SOT-23 and 8 Ld SOIC packages.

The EL2125 is fabricated using Elantec's proprietary complementary bipolar process, and is specified for operation from -45°C to +85°C.

KEY FEATURES

  • Voltage noise of only 0.83nV/√Hz
  • Current noise of only 2.4pA/√Hz
  • 200µV offset voltage
  • 175MHz -3dB BW for AV = 10
  • Low supply current - 10mA
  • SOT-23 package available
  • ±2.5V to ±15V operation
  • Pb-Free Plus Anneal Available (RoHS Compliant)

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
EL2125
Basic Information
Production Status
Mass Production
iSim Model
YES
# of Devices/ Channels
1
Bandwidth (MHz)
175
Slew Rate (V/μs)
185
VS (min)
5 V
VS (max)
30 V
IS (per amp)
10 mA
Noise VN (nV/√Hz)
0.83
IBIAS
22 µA
IBIAS (max)
30 µA
Max Offset Voltage
2 mV
IOUT
100 mA
VOUT (V)
27.1
Rail-to-Rail Input
-Vs
Rail-to-Rail Output
No
PSRR (dB)
97
CMRR (dB)
106
Thermal Shutdown
No
THD (dB)
85
Gain Min
10
AVOL (dB)
87
Enable
No
Topology
VFA
Distortion Conditions
2Vpp, 1MHz
Output Headroom (V)
1.5
Qualification Level
Standard
Can Sample
YES
Temperature Range
-40 to +85

Below you will find information to support the development of your application.

You can find an explanation of orderable part numbers here.

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