ST491ACDR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Signal Conditioning
• Characteristics: Low Power, High Precision
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Amplifier and Filter
• Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Supply Voltage: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Input Offset Voltage: ±1mV (maximum)
• Gain Bandwidth Product: 10MHz (typical)
• Slew Rate: 3V/µs (typical)
• Quiescent Current: 500µA (typical)

Detailed Pin Configuration

The ST491ACDR IC has a total of 8 pins arranged as follows:

```

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| | --| V+ OUT |-- Pin 1: Positive Supply Voltage (V+) --| IN- GND |-- Pin 2: Inverting Input (-) --| IN+ NC |-- Pin 3: Non-Inverting Input (+) --| V- NC |-- Pin 4: Negative Supply Voltage (V-) --| NC NC |-- Pin 5: Not Connected (NC) --| NC NC |-- Pin 6: Not Connected (NC) --| NC NC |-- Pin 7: Not Connected (NC) --| NC NC |-- Pin 8: Not Connected (NC) |___________| ```

Functional Features

• Low power consumption makes it suitable for battery-powered applications.
• High precision amplification and filtering of input signals.
• Wide operating voltage range allows flexibility in various systems.
• Small package size enables space-saving designs.
• Excellent noise performance ensures accurate signal conditioning.

Advantages and Disadvantages

Advantages: - Low power consumption - High precision amplification - Wide operating voltage range - Small package size

Disadvantages: - Limited number of pins for additional functionality - Not suitable for high-frequency applications

Working Principles

The ST491ACDR is an operational amplifier designed to amplify and filter input signals. It operates by taking the difference between the inverting (-) and non-inverting (+) inputs and amplifying it with high precision. The amplified output signal is then filtered to remove any unwanted noise or interference. The IC requires a positive and negative supply voltage (V+ and V-) to operate correctly.

Detailed Application Field Plans

The ST491ACDR is commonly used in various applications, including:

1. Sensor Signal Conditioning: Amplifies and filters sensor signals for accurate measurement.
2. Audio Amplification: Provides precise amplification for audio signals in portable devices.
3. Industrial Control Systems: Used in control systems to condition analog signals for processing.
4. Medical Equipment: Amplifies and filters bioelectric signals for medical diagnostics.
5. Automotive Electronics: Signal conditioning for automotive sensors and control systems.

Detailed and Complete Alternative Models

1. LM358: Dual Operational Amplifier with similar characteristics.
2. MCP6002: Low Power Op-Amp with rail-to-rail input/output capability.
3. TL072: General-purpose JFET-input operational amplifier.

These alternative models offer similar functionality and can be considered as substitutes for the ST491ACDR in various applications.

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