AD7797BRUZ

Product Overview

Category

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

Use

The AD7797BRUZ is primarily used for converting analog signals into digital data. It is commonly employed in various applications that require precise and accurate conversion of analog signals, such as industrial automation, medical equipment, and scientific instruments.

Characteristics

• High resolution: The AD7797BRUZ offers a resolution of up to 24 bits, ensuring accurate and detailed digital representation of analog signals.
• Low noise: This ADC exhibits low noise performance, enabling reliable signal conversion even in noisy environments.
• Low power consumption: With its low power design, the AD7797BRUZ minimizes energy consumption, making it suitable for battery-powered devices.
• Flexible input range: It supports both single-ended and differential input configurations, providing versatility in signal acquisition.
• On-chip programmable gain amplifier (PGA): The integrated PGA allows users to amplify weak signals before conversion, enhancing sensitivity and dynamic range.

Packaging

The AD7797BRUZ is available in a small outline integrated circuit (SOIC) package, which ensures ease of integration into various electronic systems.

Essence

The essence of the AD7797BRUZ lies in its ability to accurately convert analog signals into digital form, facilitating further processing and analysis by digital systems.

Packaging/Quantity

The AD7797BRUZ is typically packaged in reels containing 250 units per reel.

Specification Parameters

The AD7797BRUZ encompasses the following specification parameters:

• Resolution: 24 bits
• Input voltage range: ±VREF
• Sampling rate: Up to 470 samples per second
• Power supply voltage: 2.7 V to 5.25 V
• Operating temperature range: -40°C to +85°C
• Reference voltage: Internal or external

Pin Configuration

The AD7797BRUZ features a 16-lead SOIC package with the following 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. REFIN: Reference voltage input
9. VBIAS: Bias voltage output
10. SCLK: Serial clock input
11. DIN: Serial data input
12. DOUT: Serial data output
13. /CS: Chip select input
14. /RESET: Reset input
15. DRDY: Data ready output
16. NC: No connection

Functional Characteristics

The AD7797BRUZ offers the following functional characteristics:

• Programmable gain amplifier (PGA) with gains of 1, 2, 4, 8, 16, 32, 64, and 128
• On-chip reference voltage generator
• Simultaneous 50 Hz/60 Hz rejection
• Continuous conversion mode or single-cycle conversion mode
• Internal clock oscillator or external clock source options
• SPI-compatible serial interface for communication with microcontrollers or other digital devices

Advantages and Disadvantages

Advantages

• High resolution enables accurate signal conversion
• Low noise performance ensures reliable data acquisition
• Flexible input range accommodates various signal types
• Low power consumption extends battery life in portable applications
• Integrated PGA enhances sensitivity and dynamic range

Disadvantages

• Limited sampling rate compared to some higher-end ADCs
• Requires external components for proper operation
• Higher cost compared to lower-resolution ADCs

Working Principle

The AD7797BRUZ operates based on the principle of successive approximation. It utilizes an internal analog-to-digital conversion technique to convert the input analog voltage into a digital representation. The conversion process involves sampling, quantization, and encoding, resulting in a precise digital output that corresponds to the input analog signal.

Detailed Application Field Plans

The AD7797BRUZ finds applications in various fields, including:

1. Industrial automation: Used for monitoring and control systems, data acquisition, and process control.
2. Medical equipment: Employed in patient monitoring devices, medical imaging, and laboratory instruments.
3. Scientific instruments: Utilized in research equipment, data loggers, and precision measurement devices.
4. Energy management: Applied in smart grid systems, energy monitoring, and renewable energy systems.
5. Automotive electronics: Used in vehicle diagnostics, sensor interfaces, and battery management systems.

Detailed Alternative Models

Some alternative models to the AD7797BRUZ include:

1. AD7798: Similar to the AD7797BRUZ but with additional features such