AD7797BRUZ-REEL

Product Overview

Category

The AD7797BRUZ-REEL belongs to the category of analog-to-digital converters (ADCs).

Use

It is primarily used for converting analog signals into digital data, making it suitable for various applications in industries such as telecommunications, industrial automation, and medical devices.

Characteristics

• High-resolution: The AD7797BRUZ-REEL offers a resolution of up to 24 bits, ensuring accurate conversion of analog signals.
• Low power consumption: It operates at low power levels, making it energy-efficient and suitable for battery-powered devices.
• Wide input voltage range: The ADC can handle a wide range of input voltages, allowing for versatile usage.
• On-chip programmable gain amplifier: This feature enables amplification of weak analog signals before conversion, enhancing the overall performance of the ADC.

Package and Quantity

The AD7797BRUZ-REEL is available in a small outline integrated circuit (SOIC) package. Each reel contains a quantity of 250 units.

Specifications

• Resolution: Up to 24 bits
• Input Voltage Range: ±Vref
• Power Supply: 2.7V to 5.25V
• Operating Temperature Range: -40°C to +85°C
• Sampling Rate: Up to 470 samples per second
• Interface: Serial peripheral interface (SPI)

Pin Configuration

The AD7797BRUZ-REEL has a total of 16 pins. 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(+) / AIN1(-): Differential analog input
6. AIN2(+) / AIN2(-): Differential analog input
7. REFOUT: Reference voltage output
8. REFIN1(+)/REFIN1(-): Reference voltage input
9. REFIN2(+)/REFIN2(-): Reference voltage input
10. VBIAS: Bias voltage output
11. DVDD: Digital power supply
12. DGND: Digital ground
13. SCLK: Serial clock input
14. DIN: Serial data input
15. DOUT: Serial data output
16. CS: Chip select input

Functional Features

• Programmable gain amplifier (PGA): The AD7797BRUZ-REEL includes an on-chip PGA that allows for amplification of the input signal, providing flexibility in handling different signal levels.
• Internal reference voltage: It incorporates an internal reference voltage source, eliminating the need for an external reference and simplifying the design.
• Low noise performance: The ADC offers low noise characteristics, ensuring accurate conversion even in noisy environments.
• Overrange and underrange detection: The device can detect when the input signal exceeds or falls below the specified range, providing additional control and error detection capabilities.

Advantages and Disadvantages

Advantages

• High resolution ensures precise conversion of analog signals.
• Low power consumption makes it suitable for battery-powered devices.
• Wide input voltage range allows for versatile usage.
• On-chip programmable gain amplifier enhances overall performance.

Disadvantages

• Limited sampling rate compared to some other ADCs in the market.
• Requires an external microcontroller or interface for data processing and communication.

Working Principles

The AD7797BRUZ-REEL operates based on the principle of successive approximation. It samples the analog input signal, converts it into a digital representation using an internal ADC, and then outputs the digital data through the serial interface. The programmable gain amplifier allows for amplification of the input signal, improving the overall accuracy and dynamic range.

Detailed Application Field Plans

The AD7797BRUZ-REEL finds applications in various fields, including:

1. Industrial Automation: It can be used for monitoring and controlling analog signals in industrial processes, such as temperature sensing, pressure measurement, and flow control.
2. Medical Devices: The ADC is suitable for medical devices that require accurate conversion of physiological signals, such as ECG monitors, blood pressure monitors, and glucose meters.
3. Telecommunications: It can be utilized in telecommunications equipment for converting analog voice signals into digital data, enabling efficient transmission and processing.
4. Energy Management: The ADC can be employed in energy management systems to measure and monitor power consumption, enabling efficient energy usage and billing.

Detailed and Complete Alternative Models

1. AD7798BRUZ-REEL: Similar to the AD7797BRUZ-REEL, but with additional features such as a higher sampling rate and more input channels.
2. ADS124S08IPW: A 24-bit ADC with similar characteristics, offering a different pin configuration and interface options