MX7821KN

Product Overview

• Category: Integrated Circuit (IC)
• Use: Signal Amplification and Processing
• Characteristics: High Gain, Low Noise, Wide Bandwidth
• Package: DIP-8 (Dual In-line Package with 8 pins)
• Essence: Operational Amplifier (Op-Amp)
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage: ±15V
• Input Offset Voltage: 2mV max
• Input Bias Current: 10nA max
• Gain Bandwidth Product: 1MHz min
• Slew Rate: 0.5V/µs min
• Input Common Mode Range: -12V to +12V
• Output Voltage Swing: ±13V
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MX7821KN has a standard DIP-8 pin configuration:

___________ V+ | 1 8 | V- IN-| 2 7 | OUT IN+| 3 6 | NC NC | 4 5 | NC ‾‾‾‾‾‾‾‾‾‾‾

Functional Features

• High voltage gain for signal amplification
• Low input offset voltage for accurate signal processing
• Low noise for improved signal quality
• Wide bandwidth for handling a broad range of frequencies
• Fast slew rate for rapid signal response
• Wide input common mode range for versatile applications
• Large output voltage swing for driving various loads

Advantages and Disadvantages

Advantages: - High gain and low noise ensure accurate and clear signal amplification. - Wide bandwidth allows for handling a wide range of frequencies. - Versatile input common mode range enables flexible applications.

Disadvantages: - Limited output voltage swing may restrict driving certain loads. - Requires dual power supply, which adds complexity to the circuit design.

Working Principles

The MX7821KN is an operational amplifier that amplifies and processes analog signals. It consists of multiple transistors and passive components integrated into a single chip. The op-amp operates by comparing the voltage difference between its two input terminals (IN+ and IN-) and producing an amplified output voltage at the OUT pin. By adjusting the feedback network, the gain and characteristics of the amplifier can be tailored to specific requirements.

Detailed Application Field Plans

The MX7821KN finds applications in various fields, including:

1. Audio Amplification: Used in audio systems to amplify weak audio signals from sources such as microphones or musical instruments.
2. Signal Conditioning: Employed in sensor interfaces to amplify and condition small electrical signals before further processing.
3. Active Filters: Utilized in filter circuits to shape the frequency response of signals in communication systems or audio equipment.
4. Instrumentation Systems: Integrated into measurement devices to amplify and process signals from sensors or transducers.
5. Control Systems: Incorporated in control circuits to amplify and process control signals for regulating various parameters.

Detailed and Complete Alternative Models

1. LM741: A widely used general-purpose operational amplifier with similar characteristics and pin configuration.
2. TL072: Dual operational amplifier offering low noise and high slew rate, suitable for audio applications.
3. AD822: Precision instrumentation amplifier providing high accuracy and low drift for sensitive measurements.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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