EL2126CSZ-T7

Overview

The EL2126CSZ-T7 is an ultra-low noise, wideband operational amplifier manufactured by Renesas Electronics Corporation. It operates from ±2.5V to ±15V supplies and features a typical supply current of 4.7mA at ±5V. The device offers a voltage noise spectral density of 1.3nV/√Hz and a current noise of 1.2pA/√Hz. It provides a -3dB bandwidth of 100MHz at a gain of 10 and a slew rate up to 110V/µs. The component utilizes traditional voltage feedback and is stable for gains of 10 and greater. It is housed in an 8-lead SOIC package.

Feature Summary

• Ultra-low noise performance with minimal input voltage and current noise contributions
• Wideband operation suitable for high-frequency signal amplification
• Low power consumption relative to competitive parts
• Traditional voltage feedback topology allowing reactive elements in the feedback loop

Applications

• Ultrasound input amplifiers
• Wideband instrumentation
• Communication equipment
• AGC and PLL active filters
• Wideband sensors

Procurement Notes

Verify the specific ordering suffix 'T7' corresponds to the tape and reel packaging configuration as documented in the manufacturer's ordering information. Confirm that the 'Z' suffix indicates RoHS compliance and lead-free material sets. Ensure the procurement source provides the correct datasheet revision FN7046.4 for accurate electrical specifications and pinout definitions.

Selection Notes

Select this component when designing circuits requiring the amplification of very small signals without adding significant noise. It is appropriate for systems where space and power dissipation are critical constraints. Verify that the required closed-loop gain is 10 or greater to ensure stability without external compensation. Consider the input common-mode range limitations when operating near the supply rails.

Part Context

The EL2126 series includes variants such as the EL2126CS and EL2126CW. The CS variant uses an 8-lead SOIC package, while the CW variant utilizes a 5-lead SOT-23 package. The EL2126CSZ-T7 specifically denotes the Pb-free, tape-and-reel version of the 8-lead SOIC package. These devices are fabricated using a proprietary complementary bipolar process.

Replacement Considerations

Public confirmed substitute part numbers include LM7121IM/NOPB and LM7121IMX/NOPB from Texas Instruments.