A181

Overview

The A181 is a cascadable RF amplifier designed for operation within the 10 to 250 MHz frequency range. It utilizes discrete hybrid construction with thin film manufacturing processes to ensure accurate performance and high reliability. The device operates at a supply voltage of +15 VDC with a current draw of 9 mA, dissipating 57 mW of power. Key electrical specifications include a noise figure of 3.8 dB, a gain of 16.5 dB, a P1dB compression point of -1 dBm, and an OIP3 of 11 dBm. It features 19 dB of isolation and is housed in a TO-8-4 through-hole package.

Feature Summary

• Discrete hybrid design utilizing thin film manufacturing for precision
• Cascadable architecture suitable for multi-stage applications
• High reliability construction for consistent RF performance

Applications

• RF signal amplification in communication systems
• Test and measurement equipment front ends
• Broadband receiver stages

Procurement Notes

Verify the specific datasheet revision and manufacturer documentation prior to procurement. Confirm that the required operating conditions align with the specified +15 VDC supply and thermal dissipation limits. Ensure compatibility with the TO-8-4 through-hole mounting style during integration planning.

Selection Notes

Select this component when a low-noise, cascadable amplifier is required for frequencies between 10 and 250 MHz. Consider the 3.8 dB noise figure and 16.5 dB gain for sensitive reception chains. Evaluate the TO-8-4 package constraints against available PCB space and thermal management requirements.

Part Context

The A181 belongs to MACOM's portfolio of discrete hybrid RF amplifiers. These components are engineered for applications demanding stable gain and low noise across wide bandwidths. The technology supports robust performance in environments where standard monolithic solutions may lack sufficient linearity or power handling capabilities.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.