AD7794CRUZ

Product Overview

Category: Integrated Circuit (IC)

Use: The AD7794CRUZ is a high-resolution, low-power, 24-bit analog-to-digital converter (ADC) designed for precision measurement applications. It offers exceptional performance and flexibility, making it suitable for a wide range of industrial and scientific applications.

Characteristics: - High resolution: 24-bit ADC - Low power consumption: Ideal for battery-powered devices - Flexible input configuration: Supports various sensor types - On-chip programmable gain amplifier (PGA): Provides signal conditioning options - Serial interface: Allows easy integration with microcontrollers and digital systems

Package: The AD7794CRUZ is available in a small outline integrated circuit (SOIC) package, which ensures ease of handling and compatibility with standard PCB manufacturing processes.

Essence: The essence of the AD7794CRUZ lies in its ability to accurately convert analog signals into digital data with high resolution and low power consumption.

Packaging/Quantity: The AD7794CRUZ is typically sold in reels or tubes containing multiple units, with each unit individually packaged to ensure protection during shipping and handling.

Specifications

• Resolution: 24 bits
• Input voltage range: ±Vref
• Power supply voltage: 2.7 V to 5.25 V
• Operating temperature range: -40°C to +85°C
• Conversion rate: Up to 470 samples per second (SPS)
• Programmable gain options: 1, 2, 4, 8, 16, 32, 64, 128

Detailed Pin Configuration

The AD7794CRUZ features a total of 20 pins, each serving a specific purpose. Here is a detailed pin configuration:

1. AVDD: Analog power supply
2. AGND: Analog ground
3. VREFIN: Reference voltage input
4. REFOUT: Reference voltage output
5. DVDD: Digital power supply
6. DGND: Digital ground
7. RESET: Reset input
8. CS: Chip select input
9. DIN: Serial data input
10. DOUT: Serial data output
11. SCLK: Serial clock input
12. AIN1(+) and AIN1(-): Differential analog input 1
13. AIN2(+) and AIN2(-): Differential analog input 2
14. AIN3(+) and AIN3(-): Differential analog input 3
15. AIN4(+) and AIN4(-): Differential analog input 4

Functional Features

• High-resolution ADC: Provides accurate conversion of analog signals into digital data.
• Programmable gain amplifier (PGA): Allows signal conditioning and amplification for different sensor types.
• On-chip reference voltage: Ensures precise measurements by providing a stable reference.
• Low-power consumption: Ideal for battery-powered applications, extending the device's operating life.
• Flexible input configuration: Supports various differential and single-ended input configurations.

Advantages and Disadvantages

Advantages: - High resolution enables precise measurements. - Low power consumption extends battery life. - Flexible input configuration supports diverse sensor types. - On-chip programmable gain amplifier provides signal conditioning options. - Serial interface allows easy integration with microcontrollers and digital systems.

Disadvantages: - Limited to a maximum conversion rate of 470 SPS. - Requires external reference voltage for optimal performance.

Working Principles

The AD7794CRUZ operates on the principle of successive approximation, where it sequentially approximates the input voltage until it converges to the digital representation. The analog input is sampled and held, and the internal ADC performs a series of comparisons to determine the digital output.

Detailed Application Field Plans

The AD7794CRUZ finds applications in various fields, including but not limited to: - Industrial process control - Weighing scales and load cells - Temperature and pressure measurement systems - Medical instrumentation - Data acquisition systems - Precision sensor interfaces

Detailed and Complete Alternative Models

• AD7793: Similar to AD7794CRUZ but with a lower resolution of 16 bits.
• AD7795: Higher-resolution variant with 24-bit ADC and additional features.
• AD7796: Offers differential input channels and higher conversion rates.
• AD7797: Provides simultaneous sampling capability for multi-channel applications.

These alternative models offer different specifications and features to cater to specific application requirements.

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