CA3127E – RCA/HARRIS

Overview

The RCA/HARRIS CA3127E is a high-performance monolithic integrated circuit featuring five independent NPN bipolar transistors on a shared substrate, offering exceptional thermal and electrical matching crucial for demanding analog designs. Its standout characteristic is a gain bandwidth product (fT) exceeding 1GHz, enabling operation from DC up to 500MHz with low 1/f noise. A key design consideration when utilizing this array is managing the substrate bias; while providing a separate connection offers maximum flexibility, improper biasing can introduce parasitic coupling between transistors, impacting isolation and potentially degrading performance in sensitive high-frequency applications.

Key Features

• Gain Bandwidth Product (fT): >1GHz
• Power Gain: 30dB (Typ) at 100MHz
• Noise Figure: 3.5dB (Typ) at 100MHz
• Five Isolated NPN Transistors on Common Substrate
• Low 1/f Noise
• DIP-16 Package

Applications

The component is engineered for deployment in systems requiring high reliability and performance under specific operating conditions. It provides functional stability across the stated design envelope.

• High-frequency signal amplification in VHF front-ends
• Multifunction RF stages combining mixer and oscillator functions
• Low-noise sense amplifiers for precision measurement
• Synchronous detector circuits in communication receivers