OPA2191ID

Product Overview

Category

OPA2191ID belongs to the category of operational amplifiers (op-amps).

Use

The OPA2191ID op-amp is commonly used in various electronic circuits for amplification and signal conditioning purposes.

Characteristics

• High gain: The OPA2191ID offers a high open-loop gain, making it suitable for applications requiring precise amplification.
• Low noise: It exhibits low noise characteristics, enabling accurate signal processing.
• Wide bandwidth: With a wide bandwidth, the OPA2191ID can handle high-frequency signals effectively.
• Low power consumption: This op-amp consumes minimal power, making it suitable for battery-powered devices.

Package

The OPA2191ID is available in a small outline integrated circuit (SOIC) package.

Essence

The essence of the OPA2191ID lies in its ability to provide high-performance amplification with low noise and low power consumption.

Packaging/Quantity

The OPA2191ID is typically sold in reels or tubes, with each reel/tube containing a specific quantity of op-amps.

Specifications

• Supply voltage range: ±2.25V to ±18V
• Input offset voltage: 0.5mV (maximum)
• Gain bandwidth product: 10MHz
• Slew rate: 7V/μs
• Input bias current: 1nA (maximum)
• Operating temperature range: -40°C to +125°C

Pin Configuration

The OPA2191ID has a standard 8-pin dual in-line package (DIP) configuration. The pinout is as follows:

1. Non-inverting input (+)
2. Inverting input (-)
3. V-
4. Output
5. Offset null
6. NC (No Connection)
7. V+
8. NC (No Connection)

Functional Features

• Rail-to-rail input and output: The OPA2191ID supports input and output signals that can swing close to the supply rails, maximizing dynamic range.
• Unity-gain stable: It remains stable even at unity gain, allowing for various circuit configurations.
• Low distortion: The op-amp exhibits low harmonic distortion, ensuring accurate signal reproduction.
• Short-circuit protection: The OPA2191ID includes internal short-circuit protection, safeguarding the device from damage.

Advantages and Disadvantages

Advantages

• High gain and wide bandwidth enable precise amplification of signals.
• Low noise characteristics ensure accurate signal processing.
• Low power consumption makes it suitable for battery-powered devices.
• Rail-to-rail input and output capability maximizes dynamic range.

Disadvantages

• Limited availability in certain package options.
• Relatively higher cost compared to some other op-amps with similar specifications.

Working Principles

The OPA2191ID operates based on the principles of differential amplification. It amplifies the voltage difference between its non-inverting and inverting inputs, producing an amplified output signal.

Detailed Application Field Plans

The OPA2191ID finds applications in various fields, including: 1. Audio amplification: It can be used in audio amplifiers to enhance sound quality. 2. Sensor signal conditioning: The op-amp is suitable for amplifying and conditioning signals from sensors such as temperature, pressure, or light sensors. 3. Active filters: It can be utilized in active filter circuits to shape frequency response. 4. Instrumentation amplifiers: The OPA2191ID can be employed in instrumentation amplifier circuits for accurate measurement of small signals.

Detailed and Complete Alternative Models

1. OPA2189ID: Similar to OPA2191ID, but with lower gain bandwidth product.
2. OPA2192ID: Dual op-amp with similar characteristics to OPA2191ID.
3. OPA2111ID: Higher precision op-amp with lower noise characteristics.

These alternative models offer similar functionality and can be considered as substitutes for the OPA2191ID in various applications.

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