ADR425ARZ

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Reference

Characteristics: - High precision - Low temperature coefficient - Low dropout voltage - Low noise - Wide operating range

Package: SOIC (Small Outline Integrated Circuit)

Essence: ADR425ARZ is a voltage reference IC that provides a stable and accurate voltage output.

Packaging/Quantity: The ADR425ARZ is typically sold in reels of 250 units.

Specifications

• Output Voltage Range: 2.5V to 5.0V
• Initial Accuracy: ±0.05%
• Temperature Coefficient: 10ppm/°C
• Dropout Voltage: 300mV
• Supply Voltage Range: 4.5V to 18V
• Quiescent Current: 1.5mA

Pin Configuration

The ADR425ARZ has the following pin configuration:

```

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| | --| VOUT | --| VIN | --| GND | --| TRIM | |___________| ```

Functional Features

• High precision voltage reference for various applications
• Stable output voltage over a wide temperature range
• Low dropout voltage allows operation with low input voltages
• Low noise output for sensitive analog circuits
• Adjustable output voltage using the TRIM pin

Advantages

• Excellent accuracy and stability
• Low temperature coefficient ensures reliable performance across temperature variations
• Low dropout voltage enables operation in low voltage systems
• Minimal output noise for precise analog measurements
• Adjustable output voltage provides flexibility in system design

Disadvantages

• Relatively higher quiescent current compared to some other voltage references
• Limited output voltage range (2.5V to 5.0V)

Working Principles

The ADR425ARZ utilizes a bandgap voltage reference circuit to generate a stable and accurate output voltage. It compensates for temperature variations by employing a proportional-to-absolute-temperature (PTAT) current source and a negative temperature coefficient (NTC) resistor. These components work together to maintain a consistent voltage output despite changes in ambient temperature.

Detailed Application Field Plans

The ADR425ARZ is commonly used in various applications that require precise and stable voltage references, such as:

1. Analog-to-Digital Converters (ADCs)
2. Digital-to-Analog Converters (DACs)
3. Voltage regulators
4. Precision instrumentation
5. Sensor calibration circuits
6. Battery management systems
7. Industrial control systems

Alternative Models

Here are some alternative models that can be considered as alternatives to the ADR425ARZ:

1. LT6654: Precision Voltage Reference with Low Dropout Voltage
2. MAX6126: Ultra-High-Precision Voltage Reference
3. REF5050: Low-Noise, Low-Drift Voltage Reference
4. LM4040: Precision Micropower Shunt Voltage Reference

These alternative models offer similar functionality and characteristics, providing options for different design requirements.

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