AD7738BRUZ-REEL

Product Overview

Category

The AD7738BRUZ-REEL belongs to the category of Analog-to-Digital Converters (ADCs).

Use

This product is primarily used for converting analog signals into digital data. It finds applications in various industries such as industrial automation, instrumentation, and communication systems.

Characteristics

• High-resolution: The AD7738BRUZ-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 suitable for battery-powered devices.
• Fast conversion rate: With a maximum conversion rate of 250 kSPS (thousand samples per second), it can handle real-time data acquisition.
• Flexible input range: The ADC supports both single-ended and differential input configurations, providing versatility in signal acquisition.
• On-chip filtering: It incorporates an integrated digital filter that helps eliminate noise and improve signal quality.

Package

The AD7738BRUZ-REEL is available in a small outline integrated circuit (SOIC) package, which ensures ease of integration onto printed circuit boards (PCBs).

Essence

The essence of the AD7738BRUZ-REEL lies in its ability to accurately convert analog signals into digital form, enabling further processing and analysis.

Packaging/Quantity

This product is typically supplied in reels containing a specified quantity of units, with each reel holding a standard quantity of 250 pieces.

Specifications

• Resolution: Up to 24 bits
• Input Voltage Range: ±VREF
• Conversion Rate: Up to 250 kSPS
• Power Supply: 2.7V to 5.25V
• Operating Temperature Range: -40°C to +85°C
• Interface: Serial Peripheral Interface (SPI)

Detailed Pin Configuration

The AD7738BRUZ-REEL has a total of 28 pins. The pin configuration is as follows:

1. VREF1(+) - Positive reference voltage input
2. VREF1(-) - Negative reference voltage input
3. AIN1(+) - Analog input channel 1 positive terminal
4. AIN1(-) - Analog input channel 1 negative terminal
5. AIN2(+) - Analog input channel 2 positive terminal
6. AIN2(-) - Analog input channel 2 negative terminal
7. AIN3(+) - Analog input channel 3 positive terminal
8. AIN3(-) - Analog input channel 3 negative terminal
9. AIN4(+) - Analog input channel 4 positive terminal
10. AIN4(-) - Analog input channel 4 negative terminal
11. AGND - Analog ground
12. DVDD - Digital power supply
13. DGND - Digital ground
14. SCLK - Serial clock input
15. DIN - Serial data input
16. DOUT - Serial data output
17. CS - Chip select input
18. RDY - Ready output
19. REFOUT - Reference output
20. AVDD - Analog power supply
21. RESET - Reset input
22. TEST - Test mode input
23. NC - No connection
24. NC - No connection
25. NC - No connection
26. NC - No connection
27. NC - No connection
28. NC - No connection

Functional Features

• High-resolution ADC with up to 24-bit conversion capability.
• Supports simultaneous sampling of multiple analog input channels.
• Integrated digital filter for noise reduction and improved signal quality.
• Flexible input range selection for both single-ended and differential configurations.
• Low power consumption, suitable for battery-powered applications.
• Serial Peripheral Interface (SPI) for easy communication with microcontrollers.

Advantages and Disadvantages

Advantages

• High-resolution conversion ensures accurate representation of analog signals.
• Flexible input range allows for versatile signal acquisition.
• Integrated digital filter enhances signal quality by reducing noise.
• Low power consumption makes it suitable for portable and battery-powered devices.
• Simultaneous sampling of multiple channels enables efficient data acquisition.

Disadvantages

• Limited maximum conversion rate compared to some other ADCs in the market.
• Requires an external reference voltage source for proper operation.

Working Principles

The AD7738BRUZ-REEL operates based on the principle of successive approximation. It samples the analog input voltage and converts it into a digital representation using an internal ADC core. The converted digital data is then processed and made available through the serial interface for further analysis or storage.

Detailed Application Field Plans

The AD7738BRUZ-REEL finds applications in various fields, including:

1. Industrial Automation: Used for precise measurement and control in industrial processes such as temperature monitoring, pressure sensing, and flow rate measurement.