AD7795BRUZ

Product Overview

• Category: Analog-to-Digital Converter (ADC)
• Use: The AD7795BRUZ is a high-resolution, low-power, sigma-delta ADC designed for precision measurement applications.
• Characteristics: It offers 24-bit resolution with a maximum sampling rate of 23.7 kSPS (thousand samples per second). The device operates from a single power supply ranging from 2.7V to 5.25V and consumes very low power, making it suitable for battery-powered applications. It also features an on-chip programmable gain amplifier (PGA) and a reference voltage generator.
• Package: The AD7795BRUZ comes in a 16-lead TSSOP package.
• Essence: This ADC provides accurate and reliable conversion of analog signals into digital data, enabling precise measurements in various applications.
• Packaging/Quantity: The AD7795BRUZ is typically sold in reels of 2500 units.

Specifications

• Resolution: 24 bits
• Maximum Sampling Rate: 23.7 kSPS
• Power Supply Range: 2.7V to 5.25V
• Power Consumption: Low power operation
• Package Type: 16-lead TSSOP

Pin Configuration

The AD7795BRUZ has the following pin configuration:

1. AVDD: Analog power supply
2. AGND: Analog ground
3. REFIN1(+): Positive reference voltage input
4. REFIN1(-): Negative reference voltage input
5. AIN1(+): Positive analog input
6. AIN1(-): Negative analog input
7. DVDD: Digital power supply
8. DGND: Digital ground
9. SCLK: Serial clock input
10. DIN: Serial data input
11. DOUT: Serial data output
12. /CS: Chip select input
13. DRDY: Data ready output
14. EXCITATION: Excitation voltage output
15. REFOUT: Reference voltage output
16. RESET: Reset input

Functional Features

• High-resolution sigma-delta ADC for precision measurements
• On-chip programmable gain amplifier (PGA)
• Low power consumption for battery-powered applications
• Wide power supply range for flexibility
• Reference voltage generator for accurate conversions

Advantages and Disadvantages

Advantages: - High resolution for precise measurements - Low power consumption extends battery life - Flexible power supply range allows for various applications - On-chip PGA simplifies signal conditioning

Disadvantages: - Limited maximum sampling rate compared to some other ADCs - Requires external components for proper operation

Working Principles

The AD7795BRUZ utilizes a sigma-delta conversion technique to achieve high-resolution analog-to-digital conversion. It oversamples the analog input signal and applies noise shaping to improve the effective resolution. The on-chip PGA amplifies the input signal, allowing for measurement of small signals with high accuracy. The reference voltage generator ensures stable and accurate conversions.

Application Field Plans

The AD7795BRUZ is suitable for a wide range of precision measurement applications, including but not limited to:

1. Industrial process control
2. Weighing scales
3. Temperature and pressure sensors
4. Medical instrumentation
5. Data acquisition systems

Alternative Models

For alternative options with similar functionality, consider the following ADCs:

1. AD7794: 24-bit sigma-delta ADC with lower power consumption
2. AD7190: 24-bit sigma-delta ADC with higher maximum sampling rate
3. ADS1232: 24-bit delta-sigma ADC with integrated PGA

These alternative models offer different trade-offs in terms of power consumption, sampling rate, and additional features.

In conclusion, the AD7795BRUZ is a high-resolution sigma-delta ADC designed for precision measurement applications. Its low power consumption, wide power supply range, and on-chip programmable gain amplifier make it suitable for various applications. However, it has a limited maximum sampling rate compared to some other ADCs. The device operates based on the sigma-delta conversion technique and finds application in industrial process control, weighing scales, medical instrumentation, and more. Alternative models such as the AD7794, AD7190, and ADS1232 provide different options with varying specifications and features.