AD7924BRUZ

Product Overview

Category: Analog-to-Digital Converter (ADC)

Use: The AD7924BRUZ is a high-performance, 12-bit successive approximation register (SAR) ADC. It is designed for precision measurement applications that require accurate conversion of analog signals into digital data.

Characteristics: - Resolution: 12 bits - Sampling Rate: Up to 1 MSPS (Mega Samples Per Second) - Input Voltage Range: ±VREF - Low Power Consumption: 2.5 mW at 1 MSPS - Operating Temperature Range: -40°C to +85°C

Package: The AD7924BRUZ comes in a small 16-lead TSSOP (Thin Shrink Small Outline Package) which provides good thermal performance and ease of handling during assembly.

Essence: This ADC offers high accuracy and low power consumption, making it suitable for a wide range of precision measurement applications.

Packaging/Quantity: The AD7924BRUZ is available in tape and reel packaging, with 2500 units per reel.

Specifications

• Resolution: 12 bits
• Number of Channels: 4
• Input Voltage Range: ±VREF
• Conversion Time: 1 µs (typical)
• Supply Voltage: 2.7 V to 5.25 V
• Power Consumption: 2.5 mW at 1 MSPS
• Operating Temperature Range: -40°C to +85°C
• Interface: SPI (Serial Peripheral Interface)

Pin Configuration

The AD7924BRUZ has a total of 16 pins. Here is the detailed pin configuration:

| Pin Number | Pin Name | Description | |------------|----------|-------------| | 1 | VDD | Power Supply Voltage | | 2 | VREF | Reference Voltage Input | | 3 | AGND | Analog Ground | | 4 | VIN1 | Analog Input Channel 1 | | 5 | VIN2 | Analog Input Channel 2 | | 6 | VIN3 | Analog Input Channel 3 | | 7 | VIN4 | Analog Input Channel 4 | | 8 | DGND | Digital Ground | | 9 | SCLK | Serial Clock Input | | 10 | SDI | Serial Data Input | | 11 | CS | Chip Select Input | | 12 | SDOUT | Serial Data Output | | 13 | RDY | Ready Indicator Output | | 14 | CONVST | Conversion Start Input | | 15 | RESET | Reset Input | | 16 | VIO | Digital Supply Voltage |

Functional Features

• High-resolution ADC with 12-bit accuracy
• Four input channels for simultaneous conversion
• Low power consumption for energy-efficient operation
• Fast conversion time of 1 µs (typical)
• Wide operating temperature range for versatile applications
• SPI interface for easy integration with microcontrollers and digital systems

Advantages and Disadvantages

Advantages: - High accuracy and resolution - Low power consumption - Simultaneous conversion of multiple channels - Wide operating temperature range - Easy integration with digital systems

Disadvantages: - Limited number of input channels (only four) - Requires an external reference voltage (VREF)

Working Principles

The AD7924BRUZ is based on the successive approximation register (SAR) architecture. It uses a capacitive digital-to-analog converter (DAC) to compare the input analog voltage with a binary-weighted reference voltage. The SAR algorithm iteratively approximates the input voltage by adjusting the DAC's output until it matches the input voltage within the desired accuracy.

Detailed Application Field Plans

The AD7924BRUZ is suitable for various applications that require high-precision analog-to-digital conversion. Some potential application fields include:

1. Industrial Automation: Measurement and control systems, process monitoring, and data acquisition.
2. Medical Instruments: Patient monitoring devices, diagnostic equipment, and laboratory instruments.
3. Test and Measurement: Oscilloscopes, data loggers, signal analyzers, and spectrum analyzers.
4. Communication Systems: Base stations, wireless infrastructure, and satellite communication equipment.
5. Automotive Electronics: Engine control units, battery management systems, and sensor interfaces.

Detailed and Complete Alternative Models

1. AD7091R-12: 12-bit SAR ADC with single-channel input and SPI interface.
2. AD7685: 16-bit SAR ADC with eight input channels and low power consumption.
3. ADS8860: 18-bit SAR ADC with four input channels and high accuracy.
4. LTC1867: 16-bit SAR ADC with