CA3080E

Product Overview

Category: Integrated Circuit (IC)

Use: The CA3080E is a versatile operational transconductance amplifier (OTA) that finds applications in various electronic circuits. It is commonly used as a voltage-controlled amplifier, current-controlled amplifier, and as a building block for filters, oscillators, and other analog signal processing circuits.

Characteristics: - High gain and linearity - Wide dynamic range - Low noise and distortion - Temperature stability - Low power consumption

Package: The CA3080E is available in an 8-pin DIP (Dual Inline Package) format, which allows for easy integration into circuit boards.

Essence: The essence of the CA3080E lies in its ability to convert a voltage input into a corresponding current output, making it suitable for a wide range of applications requiring voltage-controlled amplification or signal processing.

Packaging/Quantity: The CA3080E is typically sold in reels or tubes containing multiple units, with each reel or tube containing a specific quantity of ICs.

Specifications

• Supply Voltage Range: ±5V to ±18V
• Input Offset Voltage: 2mV (maximum)
• Input Bias Current: 100nA (maximum)
• Transconductance: 1mA/V to 5000mA/V
• Operating Temperature Range: -55°C to +125°C

Pin Configuration

The CA3080E features the following pin configuration:

1. IN-
2. IN+
3. VREF
4. OUT
5. GND
6. IABC
7. IAB
8. VS

Functional Features

• Voltage-Controlled Amplification: The CA3080E can be used to amplify an input voltage signal based on a control voltage, allowing for precise control over the amplification factor.
• Current-Controlled Amplification: By utilizing the transconductance property, the CA3080E can also be used as a current-controlled amplifier, where the input current controls the output current.
• Signal Processing Building Block: The versatile nature of the CA3080E makes it an ideal building block for various analog signal processing circuits such as filters, oscillators, and voltage-controlled oscillators (VCOs).

Advantages and Disadvantages

Advantages: - High gain and linearity enable accurate amplification and signal processing. - Wide dynamic range allows for handling signals of varying amplitudes. - Low noise and distortion ensure high-quality signal reproduction. - Temperature stability ensures consistent performance across different operating conditions. - Low power consumption contributes to energy-efficient designs.

Disadvantages: - Limited availability due to being an older IC model. - May require additional external components for certain applications. - Sensitivity to electromagnetic interference (EMI) in some cases.

Working Principles

The CA3080E operates based on the principle of transconductance, where the input voltage is converted into a corresponding output current. This is achieved through the control of bias currents and voltages within the IC, allowing for precise control over the amplification or attenuation of the input signal.

Detailed Application Field Plans

The CA3080E finds applications in various fields, including but not limited to: 1. Audio Signal Processing: Used in audio mixers, equalizers, compressors, and guitar effects pedals. 2. Voltage-Controlled Oscillators (VCOs): Utilized in synthesizers, frequency modulation (FM) radios, and electronic musical instruments. 3. Filters: Employed in active filters for frequency selection and shaping. 4. Automatic Gain Control (AGC) Systems: Integrated into AGC circuits to maintain a constant output level despite varying input signal levels. 5. Voltage-Controlled Amplifiers (VCAs): Used in audio applications for volume control and dynamic range compression.

Detailed and Complete Alternative Models

1. LM13700: A dual operational transconductance amplifier with similar characteristics and applications.
2. LM13600: Another dual OTA that offers additional features such as temperature compensation.
3. SSM2164: A quad voltage-controlled amplifier suitable for audio applications.
4. AS3360: A versatile VCA with low noise and distortion characteristics.
5. THAT2180: A high-performance VCA designed specifically for professional audio applications.

These alternative models provide similar functionality to the CA3080E and can be used as replacements or alternatives depending on specific design requirements.

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