MAX603EPA

Product Overview

• Category: Voltage Reference
• Use: Provides a stable voltage reference for precision analog circuits
• Characteristics: High accuracy, low temperature coefficient, low dropout voltage
• Package: 8-pin PDIP (Plastic Dual In-Line Package)
• Essence: Precision voltage reference
• Packaging/Quantity: Tube packaging, 25 pieces per tube

Specifications

• Output Voltage: 2.5V
• Initial Accuracy: ±0.4%
• Temperature Coefficient: 50ppm/°C
• Dropout Voltage: 300mV
• Operating Temperature Range: -40°C to +85°C
• Supply Voltage Range: 3V to 12V
• Quiescent Current: 120µA

Pin Configuration

The MAX603EPA has the following pin configuration:

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| | --| VOUT | --| GND | --| TRIM | --| NC | --| IN | --| SHDN | --| REFOUT | |___________| ```

Functional Features

• Provides a stable and accurate voltage reference
• Low temperature coefficient ensures minimal output voltage drift with temperature changes
• Low dropout voltage allows operation with low input voltages
• Shutdown mode (SHDN pin) for power-saving when not in use
• Trim pin (TRIM) for fine adjustment of the output voltage

Advantages and Disadvantages

Advantages: - High accuracy and stability - Wide operating temperature range - Low dropout voltage enables operation with low input voltages

Disadvantages: - Limited output voltage options (only 2.5V in this case) - Not suitable for high current applications

Working Principles

The MAX603EPA is a precision voltage reference that generates a stable output voltage of 2.5V. It utilizes a bandgap voltage reference circuit to achieve high accuracy and stability. The internal circuitry compensates for temperature variations, ensuring minimal output voltage drift over a wide temperature range.

The device operates with a supply voltage between 3V and 12V and has a low dropout voltage of 300mV, allowing it to work with low input voltages. The trim pin (TRIM) provides the ability to fine-tune the output voltage if necessary.

Detailed Application Field Plans

The MAX603EPA is commonly used in various precision analog circuits where a stable voltage reference is required. Some typical application fields include:

1. Sensor interfaces: Provides a precise reference voltage for sensor signal conditioning circuits.
2. Data acquisition systems: Ensures accurate measurements by providing a stable voltage reference for analog-to-digital converters.
3. Precision instrumentation: Used in precision measurement equipment such as multimeters, oscilloscopes, and spectrum analyzers.
4. Industrial control systems: Provides a stable reference voltage for control circuits in industrial automation applications.
5. Battery-powered devices: Suitable for low-power applications due to its low quiescent current and low dropout voltage.

Detailed and Complete Alternative Models

• LM4040CIZ-2.5: 2.5V precision shunt voltage reference
• LT1236ACS8-2.5: 2.5V micropower precision series voltage reference
• REF5025AIDGKT: 2.5V precision voltage reference with integrated gain and temperature compensation

These alternative models offer similar functionality and performance characteristics to the MAX603EPA and can be considered as alternatives depending on specific requirements.

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