OPA843IDR

Product Overview

Category: Integrated Circuit (IC)

Use: The OPA843IDR is a high-speed operational amplifier designed for use in various applications that require precision amplification and signal conditioning. It is commonly used in audio systems, medical equipment, test and measurement instruments, and communication devices.

Characteristics: - High bandwidth and slew rate for accurate signal reproduction - Low input offset voltage and low noise for precise amplification - Wide supply voltage range for flexibility in different power environments - Rail-to-rail output swing to maximize dynamic range - High open-loop gain for excellent linearity

Package: The OPA843IDR is available in a small outline package (SOIC) with 8 pins. This package offers good thermal performance and ease of handling during assembly.

Essence: The essence of the OPA843IDR lies in its ability to provide high-speed and high-performance amplification, making it suitable for demanding applications where accuracy and reliability are crucial.

Packaging/Quantity: The OPA843IDR is typically sold in reels or tubes containing multiple units. The exact quantity may vary depending on the supplier.

Specifications

• Supply Voltage Range: ±2.5V to ±18V
• Bandwidth: 200 MHz
• Slew Rate: 900 V/μs
• Input Offset Voltage: 1 mV (max)
• Input Bias Current: 3 nA (typ)
• Quiescent Current: 10 mA (typ)
• Output Current: 50 mA (max)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The OPA843IDR has the following pin configuration:

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

Functional Features

• High-speed amplification: The OPA843IDR offers a wide bandwidth and fast slew rate, allowing it to accurately amplify high-frequency signals.
• Low noise and distortion: With low input offset voltage and high open-loop gain, the OPA843IDR ensures minimal noise and distortion in the amplified signal.
• Rail-to-rail output swing: The amplifier can drive signals close to the supply rails, maximizing the dynamic range of the output signal.
• Wide supply voltage range: The OPA843IDR can operate from ±2.5V to ±18V, making it compatible with various power supply configurations.

Advantages and Disadvantages

Advantages: - High-speed performance for accurate signal reproduction - Low noise and distortion for precise amplification - Wide supply voltage range for flexibility in different applications - Rail-to-rail output swing for maximum dynamic range

Disadvantages: - Relatively high quiescent current compared to some other operational amplifiers - Limited availability of alternative models with similar specifications

Working Principles

The OPA843IDR is based on a differential amplifier configuration that provides high gain and linearity. It utilizes a combination of active devices and feedback networks to achieve accurate amplification of input signals. The amplifier's internal circuitry is designed to minimize noise, distortion, and offset voltage, ensuring reliable and precise signal conditioning.

Application Field Plans

The OPA843IDR finds application in various fields, including: 1. Audio Systems: Provides high-fidelity amplification for audio signals in professional audio equipment, home theater systems, and musical instruments. 2. Medical Equipment: Used in medical imaging devices, patient monitoring systems, and precision instrumentation where accurate signal conditioning is critical. 3. Test and Measurement Instruments: Enables precise measurement and analysis of signals in oscilloscopes, spectrum analyzers, and data acquisition systems. 4. Communication Devices: Supports high-speed signal processing in wireless communication systems, optical networks, and radar systems.

Alternative Models

While the OPA843IDR offers unique specifications and features, alternative models with similar characteristics include: - AD8065 by Analog Devices - LT1819 by Linear Technology - MAX4239 by Maxim Integrated

These alternatives can be considered based on specific application requirements and availability.

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