EL2126CSZ

Overview

The EL2126CSZ is an ultra-low noise, wideband voltage feedback operational amplifier manufactured by Renesas Electronics Corporation. It operates within a supply voltage range of ±2.5V to ±15V and features a typical supply current of 4.7mA. The device provides a -3dB bandwidth of 100MHz at a gain of 10 and a slew rate of 80V/µs to 150V/µs depending on the supply voltage. Key electrical specifications include a voltage noise spectral density of 1.3nV/√Hz, a current noise of 1.2pA/√Hz, and an input offset voltage of 200µV. It is housed in an 8-lead SOIC package.

Feature Summary

• Ultra-low noise performance with 1.3nV/√Hz voltage noise and 1.2pA/√Hz current noise for high-fidelity signal amplification
• Wideband operation with a 100MHz -3dB bandwidth at a gain of 10 and a 650MHz gain-bandwidth product
• Low power consumption with a typical supply current of 4.7mA, suitable for multi-channel systems
• Stable for gains of 10 and greater using traditional voltage feedback architecture

Applications

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

Procurement Notes

Verify component authenticity through authorized channels as the EL2126CSZ may be discontinued or subject to obsolescence notices. Confirm RoHS compliance status and check for specific manufacturing date codes or lot traceability requirements relevant to your production timeline. Ensure that any replacement components maintain equivalent pinout compatibility and electrical characteristics to avoid redesign efforts.

Selection Notes

Select this amplifier for applications requiring minimal noise addition when amplifying small signals. It is suitable for designs needing high bandwidth with low power dissipation. Verify that the required closed-loop gain is 10 or higher for guaranteed stability without external compensation. Consider the 8-lead SOIC package dimensions for PCB layout constraints and ensure adequate thermal management for the operating environment.

Part Context

The EL2126 is part of the EL2126 series of ultra-low noise, wideband amplifiers fabricated on a complementary bipolar process. It is available in both 5-lead SOT-23 and 8-lead SOIC packages. The 'CSZ' suffix indicates the 8-lead SOIC variant with lead-free (RoHS compliant) packaging. This component is designed to operate over a temperature range of -40°C to +85°C.

Replacement Considerations

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