FN7046 Rev 4.00

Page 1 of 19

May 2, 2007

FN7046

Rev 4.00

May 2, 2007

EL2126

Ultra-Low Noise, Low Power, Wideband Amplifier

DATASHEET

The EL2126 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 EL2126 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 SO

packages.

The EL2126 is fabricated in Elantec’s proprietary

complementary bipolar process, and is specified for

operation over the full -40°C to +85°C temperature range.

Pinouts

EL2126

(5 LD SOT-23)

TOP VIEW

EL2126

(8 LD SOIC)

TOP VIEW

Features

• Voltage noise of only 1.3nV/

Hz

• Current noise of only 1.2pA/

Hz

• 200µV offset voltage

• Very low supply current - 4.7mA

• SOT-23 package

• ±2.5V to ±15V operation

• Pb-free plus anneal available (RoHS compliant)

Applications

• Ultrasound input amplifiers

• Wideband instrumentation

• Communication equipment

• AGC and PLL active filters

• Wideband sensors

1

2

3

5

4

-

+

VS+

IN-

IN+

VS-

OUT

1

2

3

4

8

7

6

5

-

+

NC

IN-

IN+

VS-

NC

VS+

OUT

NC