AD5421BREZ

Product Overview

Category: Integrated Circuit (IC)

Use: The AD5421BREZ is a precision, fully integrated 16-bit digital-to-analog converter (DAC) designed for industrial control and process control applications. It provides accurate conversion of digital signals into analog voltages or currents.

Characteristics: - High resolution: 16-bit DAC - Low power consumption: <10mW - Wide operating temperature range: -40°C to +105°C - Single-supply operation: 4.5V to 30V - Rail-to-rail output voltage swing - On-chip reference voltage generator

Package: The AD5421BREZ is available in a small outline package (SOIC) with 16 pins.

Essence: This IC serves as a key component in various industrial control systems, enabling precise and reliable conversion of digital signals to analog outputs.

Packaging/Quantity: The AD5421BREZ is typically sold in reels containing 250 units per reel.

Specifications

• Resolution: 16 bits
• Output Range: 0V to Vref
• Reference Voltage: 2.5V
• Integral Nonlinearity (INL): ±1 LSB max
• Differential Nonlinearity (DNL): ±1 LSB max
• Settling Time: 10 μs max
• Supply Voltage Range: 4.5V to 30V
• Power Consumption: <10 mW
• Operating Temperature Range: -40°C to +105°C

Pin Configuration

The AD5421BREZ has the following pin configuration:

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| | | 1 2 3 4 5 6 7 8 9 10 | |_______________________________________| | | | 11 12 13 14 15 16 | |_______________________________________| ```

1. VDD: Positive power supply
2. GND: Ground reference
3. REFOUT: Reference voltage output
4. AGND: Analog ground
5. AOUT: Analog output
6. SDO: Serial data output
7. SDI: Serial data input
8. SCLK: Serial clock input
9. SYNC: Synchronization input
10. RESET: Reset input
11. VLOGIC: Logic power supply 12-16: NC (No Connection)

Functional Features

• High-resolution DAC with 16-bit accuracy
• Rail-to-rail output swing for maximum dynamic range
• On-chip reference voltage generator eliminates the need for external references
• Serial interface for easy integration with microcontrollers and digital systems
• Low power consumption for energy-efficient operation
• Fast settling time ensures rapid response in control applications
• Wide operating temperature range allows for reliable performance in harsh environments

Advantages and Disadvantages

Advantages: - High resolution provides precise analog outputs - Wide operating temperature range enables use in various industrial applications - Low power consumption for energy efficiency - Integrated reference voltage generator simplifies system design - Serial interface allows for easy integration with digital systems

Disadvantages: - Limited output voltage range (0V to Vref) - Requires external synchronization for precise timing

Working Principles

The AD5421BREZ utilizes a 16-bit digital-to-analog conversion technique to convert digital input signals into corresponding analog voltages or currents. It incorporates an on-chip reference voltage generator, eliminating the need for external references. The serial interface allows for easy communication with microcontrollers or digital systems, enabling precise control of the analog output.

Detailed Application Field Plans

The AD5421BREZ is well-suited for a wide range of industrial control and process control applications, including but not limited to: - Programmable logic controllers (PLCs) - Distributed control systems (DCS) - Process automation - Motor control - Temperature control systems - Flow control systems - Pressure control systems

Alternative Models

For users seeking alternative options, the following models can be considered: - AD5420: 14-bit version of the AD5421BREZ with similar features - AD5422: 18-bit version of the AD5421BREZ with higher resolution - AD5750: 16-bit current output DAC with additional features like fault detection and diagnostics

These alternative models provide different resolutions and additional functionalities to suit specific application requirements.

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