MAX640ESA+ - English Editing Encyclopedia Entry

Product Overview

Category: Integrated Circuits (ICs)

Use: Voltage Reference

Characteristics: - Low-power, precision voltage reference - Wide operating voltage range - High accuracy and stability - Low temperature coefficient - Low output noise

Package: 8-SOIC (Small Outline Integrated Circuit)

Essence: The MAX640ESA+ is a voltage reference IC that provides a stable and accurate voltage output for various electronic applications.

Packaging/Quantity: The MAX640ESA+ is available in tape and reel packaging, with a quantity of 2500 units per reel.

Specifications

• Operating Voltage Range: 2.7V to 11V
• Output Voltage: 2.5V
• Initial Accuracy: ±0.4%
• Temperature Coefficient: 50ppm/°C
• Output Noise: 30µV RMS (typical)
• Quiescent Current: 60µA (typical)
• Shutdown Current: 1µA (typical)

Pin Configuration

The MAX640ESA+ features an 8-pin Small Outline Integrated Circuit (SOIC) package. The pin configuration is as follows:

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| | --| VOUT GND|-- Pin 1: Ground --| NC SHDN|-- Pin 2: Shutdown Control --| VDD VDD |-- Pin 3: Positive Power Supply --| NC OUT |-- Pin 4: Output Voltage --| NC NC |-- Pins 5, 6, 7: No Connection --| NC NC |-- Pin 8: No Connection |___________| ```

Functional Features

• Low-power operation: The MAX640ESA+ operates at a low quiescent current of 60µA, making it suitable for battery-powered applications.
• High accuracy: With an initial accuracy of ±0.4%, the MAX640ESA+ provides precise voltage references for critical circuits.
• Temperature stability: The low temperature coefficient of 50ppm/°C ensures stable performance over a wide temperature range.
• Shutdown control: The SHDN pin allows the device to be put into a low-power shutdown mode, reducing power consumption to 1µA.

Advantages and Disadvantages

Advantages: - Wide operating voltage range - High accuracy and stability - Low temperature coefficient - Low output noise - Shutdown control for power saving

Disadvantages: - Limited output voltage options (fixed at 2.5V) - No built-in protection features

Working Principles

The MAX640ESA+ utilizes a precision bandgap circuit to generate a stable reference voltage. It compensates for temperature variations by employing a temperature sensor and feedback mechanism. The output voltage is regulated and maintained at a constant level, providing a reliable reference for other components in the circuit.

Detailed Application Field Plans

The MAX640ESA+ finds applications in various fields, including: 1. Precision measurement instruments 2. Data acquisition systems 3. Industrial control systems 4. Portable electronic devices 5. Battery management systems

Detailed Alternative Models

1. LM4040AIM3-2.5/NOPB: A 2.5V precision voltage reference with similar specifications and package type.
2. LT1461ACS8-2.5#PBF: Another 2.5V precision voltage reference offering high accuracy and low temperature coefficient.
3. REF5025AIDGKT: A 2.5V voltage reference with excellent line and load regulation characteristics.

These alternative models can be considered based on specific requirements and availability.

In conclusion, the MAX640ESA+ is a low-power, precision voltage reference IC that offers high accuracy and stability. With its wide operating voltage range and low temperature coefficient, it finds applications in various fields. While it has limited output voltage options and lacks built-in protection features, alternative models are available to suit specific needs.