EL2227CS

Overview

The EL2227CS is a dual, very low noise voltage feedback operational amplifier manufactured by Renesas Electronics Corporation. It features a -3dB bandwidth of 115MHz at a gain of +2 and is stable for gains of +2 or higher. The device operates on supply voltages ranging from ±2.5V to ±12V with a typical supply current of 4.8mA per amplifier. Key electrical specifications include an input offset voltage of 3mV maximum, an open-loop gain of 87dB, and a common-mode rejection ratio of 60dB. It utilizes an 8-lead SOIC package.

Feature Summary

• Dual-channel architecture designed for applications requiring very low voltage and current noise.
• High-speed performance with a -3dB bandwidth of 115MHz at a gain of +2.
• Voltage feedback topology allowing the use of capacitors in the feedback path for active filters and integrators.
• Capable of driving low impedance loads such as RF, IF, and video applications.

Applications

• ADSL receivers
• HDSLII receivers
• Ultrasound input amplifiers
• Wideband instrumentation
• Communications equipment

Procurement Notes

Verify the specific ordering suffix against the manufacturer's documentation to confirm the exact package type and termination finish. The base model designation indicates an 8-lead SOIC package. Confirm RoHS compliance status and moisture sensitivity level requirements prior to integration into the manufacturing process.

Selection Notes

Select this component when designing circuits that require high bandwidth combined with minimal signal degradation due to noise. The voltage feedback topology is suitable for applications where current-feedback amplifiers are inappropriate due to feedback element restrictions. Ensure the PCB layout minimizes parasitic capacitance to maintain optimal AC performance.

Part Context

This part belongs to the EL2227 series of dual, very low noise amplifiers. The series includes variants such as the EL2227CYZ in an MSOP package. These devices are built using a proprietary high-speed complementary bipolar process and are intended for line receiving applications in ADSL and HDSLII designs.

Replacement Considerations

EL2227CSZ

FAQ

Is the EL2227CS stable at unity gain?

No, the EL2227CS is specified as gain-of-2 stable. It is not guaranteed to be stable at unity gain configurations.

What is the input bias current specification?

The input bias current is typically 3.4µA to 9µA depending on the supply voltage conditions.