AD845JN

Product Overview

• Category: Integrated Circuit (IC)
• Use: Operational Amplifier
• Characteristics: High-speed, low noise, wide bandwidth
• Package: DIP (Dual In-line Package)
• Essence: Monolithic operational amplifier
• Packaging/Quantity: Tube packaging, 25 pieces per tube

Specifications

• Supply Voltage: ±5V to ±18V
• Input Offset Voltage: 1.5mV maximum
• Input Bias Current: 50nA maximum
• Input Voltage Range: ±12V
• Output Voltage Swing: ±13V
• Gain Bandwidth Product: 10MHz
• Slew Rate: 7V/µs
• Quiescent Current: 4.5mA

Detailed Pin Configuration

The AD845JN has a total of 8 pins arranged as follows:

```

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| | --| OUT |-- --| INV |-- --| V- |-- --| V+ |-- --| NON |-- --| NC |-- --| GND |-- |___________| ```

Functional Features

• High-speed performance with a gain bandwidth product of 10MHz
• Low input offset voltage and bias current for accurate signal amplification
• Wide input voltage range allows for versatile applications
• Large output voltage swing enables compatibility with various loads
• Low quiescent current for power efficiency

Advantages

• High-speed operation suitable for applications requiring fast response times
• Low noise performance ensures accurate signal amplification
• Wide bandwidth allows for amplification of a broad range of frequencies
• Versatile input voltage range accommodates different signal levels
• Robust output voltage swing provides flexibility in driving various loads

Disadvantages

• Relatively high power consumption compared to low-power operational amplifiers
• Limited supply voltage range may restrict certain applications
• DIP package may not be suitable for space-constrained designs

Working Principles

The AD845JN is a monolithic operational amplifier designed for high-speed signal amplification. It utilizes a differential input stage followed by a gain stage and an output buffer. The differential input stage provides high input impedance and low input offset voltage, ensuring accurate signal amplification. The gain stage amplifies the input signal with a wide bandwidth, allowing for the amplification of various frequencies. The output buffer provides a large output voltage swing, enabling the driving of different loads.

Detailed Application Field Plans

The AD845JN is commonly used in applications that require high-speed signal amplification, such as:

1. Audio Amplification: The high-speed performance and low noise characteristics make it suitable for audio amplifiers, providing clear and accurate sound reproduction.
2. Instrumentation: The wide bandwidth and low input offset voltage make it ideal for precision measurement instruments, ensuring accurate signal acquisition.
3. Communication Systems: The high-speed operation and versatile input voltage range make it suitable for signal conditioning and amplification in communication systems.

Detailed and Complete Alternative Models

1. AD847JN: Similar to AD845JN but with improved specifications, including lower input offset voltage and higher gain bandwidth product.
2. LM741CN: A popular general-purpose operational amplifier with a lower cost but lower performance compared to AD845JN.
3. LT1028ACN8: A high-performance operational amplifier with ultra-low noise and low distortion, suitable for demanding audio applications.

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