MAX738ACPA

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Reference
• Characteristics: High precision, low dropout voltage, low temperature coefficient
• Package: 8-pin PDIP (Plastic Dual In-line Package)
• Essence: Provides a stable and accurate voltage reference for various electronic circuits
• Packaging/Quantity: Available in tubes or reels, quantity varies depending on supplier

Specifications

• Output Voltage Range: 1.25V to 10V
• Initial Accuracy: ±0.5%
• Temperature Coefficient: 50ppm/°C
• Dropout Voltage: 300mV (typical)
• Supply Voltage Range: 2.7V to 12V
• Quiescent Current: 120µA (typical)

Pin Configuration

The MAX738ACPA has the following pin configuration:

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| | --| VOUT GND|-- Pin 1: Ground --| NC VOUT|-- Pin 2: Output Voltage --| NC VIN|-- Pin 3: Input Voltage --| NC NC|-- Pin 4: Not Connected --| NC NC|-- Pin 5: Not Connected --| NC NC|-- Pin 6: Not Connected --| NC NC|-- Pin 7: Not Connected --| NC VIN|-- Pin 8: Input Voltage |___________| ```

Functional Features

• High precision voltage reference with low temperature coefficient
• Low dropout voltage allows for efficient operation even with low input voltages
• Wide supply voltage range enables compatibility with various power sources
• Stable output voltage ensures reliable performance of connected circuits

Advantages and Disadvantages

Advantages: - High accuracy and stability - Low temperature coefficient - Low dropout voltage - Wide supply voltage range

Disadvantages: - Limited output voltage range (1.25V to 10V) - Not suitable for applications requiring higher output voltages

Working Principles

The MAX738ACPA is based on a bandgap voltage reference circuit. It utilizes the temperature-dependent characteristics of semiconductor materials to generate a stable reference voltage. This voltage is then compared to an internal feedback voltage, and the resulting error signal is used to regulate the output voltage. By carefully selecting the materials and design parameters, the MAX738ACPA achieves high accuracy and stability.

Detailed Application Field Plans

The MAX738ACPA can be used in various electronic circuits that require a stable and accurate voltage reference. Some potential application fields include:

1. Analog-to-Digital Converters (ADCs): Provides a precise reference voltage for accurate conversion of analog signals.
2. Power Management Systems: Ensures stable voltage levels for efficient power distribution and regulation.
3. Sensor Interface Circuits: Maintains a consistent reference voltage for reliable sensor measurements.
4. Battery-Powered Devices: Enables efficient power usage by providing a low dropout voltage reference.

Detailed Alternative Models

1. MAX619ACP - Low-power voltage reference with similar specifications but lower quiescent current.
2. LT1236ACS8-5 - Precision shunt voltage reference with higher initial accuracy and lower temperature coefficient.
3. REF5020AIDGKT - High-precision voltage reference with wider output voltage range and lower dropout voltage.

These alternative models offer different trade-offs in terms of performance, power consumption, and cost, allowing designers to choose the most suitable option for their specific requirements.

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