AD7793BRUZ

Product Overview

Category: Integrated Circuit (IC)

Use: The AD7793BRUZ is a high-precision, low-power, 24-bit analog-to-digital converter (ADC) designed for various applications that require accurate conversion of analog signals into digital data. It is commonly used in industrial control systems, medical equipment, scientific instruments, and other electronic devices.

Characteristics: - High precision: The AD7793BRUZ offers a resolution of up to 24 bits, ensuring accurate conversion of analog signals. - Low power consumption: This ADC operates at a low supply voltage and consumes minimal power, making it suitable for battery-powered applications. - Flexible packaging: The AD7793BRUZ comes in a small 16-lead TSSOP package, allowing for easy integration into compact designs. - Versatile essence: With its versatile features and excellent performance, the AD7793BRUZ serves as a crucial component in signal processing systems.

Packaging/Quantity: The AD7793BRUZ is available in a tape and reel packaging, with 250 units per reel.

Specifications

• Resolution: 24 bits
• Input Voltage Range: ±Vref
• Supply Voltage: 2.7V to 5.25V
• Operating Temperature Range: -40°C to +85°C
• Conversion Rate: Up to 470 samples per second
• Interface: SPI (Serial Peripheral Interface)
• Power Consumption: 1.8mW (typical)

Pin Configuration

The AD7793BRUZ has a total of 16 pins, each serving a specific function. Here is the detailed pin configuration:

1. AVDD: Analog Power Supply
2. AGND: Analog Ground
3. DVDD: Digital Power Supply
4. DGND: Digital Ground
5. AIN1(+) and AIN1(-): Differential Analog Input
6. AIN2(+) and AIN2(-): Differential Analog Input
7. REFOUT: Reference Voltage Output
8. REFIN: Reference Voltage Input
9. /CS: Chip Select (Active Low)
10. SCLK: Serial Clock Input
11. DOUT/RDY: Data Output/Ready Indicator
12. DIN: Serial Data Input
13. EXCITATION: Excitation Current Source
14. VBIAS: Bias Voltage Output
15. VIO: Digital I/O Supply Voltage
16. RESET: Reset Input (Active Low)

Functional Features

• High-resolution ADC with 24-bit conversion capability.
• Programmable gain amplifier for signal conditioning.
• On-chip reference voltage generator.
• Flexible power supply options.
• SPI interface for easy communication with microcontrollers or other digital devices.
• Internal clock oscillator for precise timing.

Advantages and Disadvantages

Advantages: - High precision and accuracy in analog-to-digital conversion. - Low power consumption, suitable for battery-powered applications. - Versatile packaging and small form factor. - Wide operating temperature range. - Easy integration with microcontrollers and other digital systems.

Disadvantages: - Limited input voltage range. - Requires external components for proper operation. - Higher cost compared to lower-resolution ADCs.

Working Principles

The AD7793BRUZ operates based on the principle of sigma-delta modulation. It converts analog signals into digital data by oversampling the input signal and using a digital filter to extract the desired information. The programmable gain amplifier allows for signal conditioning, while the internal reference voltage generator ensures accurate conversion.

Application Field Plans

The AD7793BRUZ finds extensive use in various application fields, including:

1. Industrial Control Systems: Used for precise measurement and control of physical parameters in industrial processes.
2. Medical Equipment: Enables accurate data acquisition in medical devices such as patient monitors, electrocardiographs, and blood pressure monitors.
3. Scientific Instruments: Provides high-resolution data conversion for laboratory equipment, research instruments, and data loggers.
4. Environmental Monitoring: Used in environmental monitoring systems to measure and analyze various parameters like temperature, humidity, and air quality.

Alternative Models

For those seeking alternative options, the following models offer similar functionality:

1. AD7791: 16-bit ADC with lower resolution but lower cost.
2. AD7792: 24-bit ADC with additional features like on-chip temperature sensor.
3. AD7794: 24-bit ADC with higher input voltage range and integrated current sources.

These alternative models cater to different requirements and can be considered based on specific application needs.

Word count: 570 words