EL2141CS

Overview

The EL2141CS is a high-bandwidth differential amplifier manufactured by Renesas Electronics Corporation, originally designed by Intersil. It operates within a recommended temperature range of -40°C to +85°C and utilizes an 8-pin SOIC package (MDP0027). The device features a 150MHz -3dB bandwidth and an 800V/µs slew rate. It supports ±5V supplies or a +6V single supply, drawing a typical supply current of 11mA. The output provides a minimum current of 50mA with a swing to within 1.5V of the supplies under a 200Ω load.

Feature Summary

• Provides fully differential inputs, outputs, and feedback for applications susceptible to common mode injection.
• Features adjustable gain via two dedicated feedback inputs, stable at a minimum gain of two.
• Includes a reference pin (VREF) to control the output common-mode level with over 100MHz bandwidth.
• Designed for very low distortion amplification suitable for ADSL/HDSL signal transmission.

Applications

• Twisted pair driver
• ADSL/HDSL driver
• Single ended to differential amplification

Procurement Notes

Verify the manufacturer origin as the component was originally developed by Intersil before acquisition by Renesas. Confirm the specific suffix 'CS' corresponds to the 8-pin SOIC package variant. Ensure compatibility with the required operating voltage range and thermal specifications for your target environment.

Selection Notes

Select the EL2141CS when variable gain configuration is required, as opposed to the fixed-gain EL2140. Consider its suitability for noisy environments requiring robust common-mode rejection. Evaluate layout requirements carefully to minimize stray capacitance on feedback nodes to prevent gain peaking in high-frequency designs.

Part Context

This component belongs to the EL2140/EL2141 series of differential twisted pair drivers. While the EL2140 offers a fixed gain of two, the EL2141 variant allows users to set the device gain through external feedback resistors. Both share identical physical packaging and core high-speed performance characteristics.

Replacement Considerations

The EL2140 serves as a functional alternative if a fixed gain of two is sufficient for the application. Verify that any substitute maintains the 150MHz bandwidth and differential output topology required for twisted pair line driving.

FAQ

How does the EL2141 differ from the EL2140?

The EL2141 includes two feedback inputs that allow the user to set the device gain, whereas the EL2140 comes with a fixed gain of two.

What is the function of the VREF pin?

The VREF pin sets the output common-mode level. Its -3dB bandwidth exceeds 100MHz, allowing it to track ground or any other voltage reference.