EL2126CS-T7

Overview

The EL2126CS-T7 is an ultra-low noise, wideband operational amplifier manufactured by Renesas Electronics Corporation. It utilizes a proprietary complementary bipolar process and operates within a supply voltage range of ±2.5V to ±15V. The device features a typical input offset voltage of 200µV, 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 is housed in an 8-lead SOIC package with tape and reel packaging.

Feature Summary

• Ultra-low noise performance suitable for amplifying very small signals without adding significant noise
• Low power dissipation enabling operation on half the supply current of competitive parts
• Stable for gains of 10 and greater using traditional voltage feedback architecture
• Capable of driving low impedance loads such as RF, IF, and video applications

Applications

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

Procurement Notes

Verify the manufacturer designation matches Renesas Electronics Corporation or its predecessor Intersil. Confirm the specific ordering suffix corresponds to the 8-lead SOIC package and tape and reel quantity. Ensure the RoHS compliance status aligns with project requirements, noting that Pb-free versions exist. Cross-reference the datasheet revision date to confirm electrical specifications match the intended design parameters.

Selection Notes

Select this component when designing systems requiring high bandwidth combined with minimal signal degradation from internal noise sources. It is appropriate for multi-channel architectures where space and power constraints are critical due to its low current consumption. Verify that the required closed-loop gain meets the stability threshold of 10 or higher. Consider the output drive capability if interfacing with low impedance transmission lines or cables.

Part Context

This part belongs to the EL2126 family of wideband amplifiers designed for high-speed signal processing. The CS-T7 designation specifically identifies the 8-lead Small Outline Integrated Circuit (SOIC) variant supplied in a continuous tape and reel format for automated assembly. The device is fabricated using Elantec's proprietary complementary bipolar technology to achieve its specific noise and speed characteristics.

Replacement Considerations

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