AD7828LN

Product Overview

• Category: Integrated Circuit (IC)
• Use: Analog-to-Digital Converter (ADC)
• Characteristics: High-resolution, low-power, 8-channel ADC
• Package: DIP (Dual In-line Package)
• Essence: Converts analog signals into digital data
• Packaging/Quantity: Tube packaging, quantity varies

Specifications

• Resolution: 12 bits
• Channels: 8
• Input Voltage Range: 0V to Vref
• Conversion Time: 1.3 µs per channel
• Power Supply: +5V
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The AD7828LN has a total of 20 pins. The pin configuration is as follows:

1. Vref-
2. Vref+
3. AGND
4. REFOUT
5. IN1
6. IN2
7. IN3
8. IN4
9. IN5
10. IN6
11. IN7
12. IN8
13. CS
14. RD
15. WR
16. A0
17. A1
18. A2
19. DGND
20. Vcc

Functional Features

• High-resolution conversion: The AD7828LN provides 12-bit resolution, allowing for precise analog-to-digital conversion.
• Low power consumption: This ADC operates at low power, making it suitable for battery-powered applications.
• Multiple channels: With 8 input channels, the AD7828LN can simultaneously convert multiple analog signals.
• Fast conversion time: Each channel can be converted in just 1.3 µs, enabling rapid data acquisition.

Advantages and Disadvantages

Advantages: - High resolution ensures accurate conversion. - Low power consumption extends battery life. - Multiple channels allow for simultaneous conversion. - Fast conversion time enables quick data acquisition.

Disadvantages: - Limited input voltage range (0V to Vref). - DIP package may not be suitable for space-constrained applications. - Requires an external reference voltage.

Working Principles

The AD7828LN operates on the principle of successive approximation. It samples the analog input voltage and compares it to a reference voltage. By iteratively adjusting the digital code, it converges to a value that represents the analog input accurately. The converted digital data is then available for further processing or storage.

Detailed Application Field Plans

The AD7828LN is commonly used in various applications, including:

1. Industrial automation: Monitoring and control systems that require precise analog-to-digital conversion.
2. Data acquisition: Capturing analog signals from sensors or transducers for analysis and processing.
3. Medical equipment: Measurement and monitoring devices that require accurate conversion of physiological signals.
4. Instrumentation: Test and measurement equipment that needs high-resolution ADCs for accurate readings.
5. Audio processing: Converting analog audio signals into digital format for processing and storage.

Detailed and Complete Alternative Models

1. AD7821: 8-bit resolution, 8-channel ADC with similar features.
2. AD7824: 12-bit resolution, 4-channel ADC with lower power consumption.
3. AD7829: 12-bit resolution, 8-channel ADC with extended input voltage range.
4. AD7918: 16-bit resolution, 8-channel ADC with higher accuracy.

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

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