The CA3094 is a series of operational transconductance amplifiers (OTA) manufactured by Intersil Corporation, now part of Renesas Electronics. Classified as End-of-Life, detailed documentation may be hard to acquire. OTAs are voltage-controlled current sources, providing gain dependent on an external resistor.

Applications

• Voltage-Controlled Amplifiers (VCAs)
• Automatic Gain Control (AGC) circuits
• Modulators and Demodulators
• Active Filters
• Multiplexers

Features

• Adjustable Transconductance
• High Input Impedance
• Low Input Bias Current
• Wide Supply Voltage Range
• Programmable Gain
• Simple Biasing

Benefits

• Flexible Gain Control
• Versatile Building Block
• Simplified Circuit Design
• Low Power Consumption
• Improved Performance

Additional Details

The transconductance (gm) of the CA3094 is proportional to the amplifier bias current, allowing for easy gain control. This makes it useful in applications where gain needs to be dynamically adjusted. Because it is an End-of-Life component, finding a direct replacement may be difficult. In the selection of replacement part, you should make sure the transconductance, input impedance and supply voltage are similar.

Consult original Intersil datasheet or archived documentation for complete electrical specifications and application notes. Consider consulting surplus vendors for supply, and be conscious about potential performance variations compare to modern components.