QD Devices Inc.
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AD7847BR
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AD7847BR

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Analog-to-Digital Converter (ADC)
  • Characteristics: High-resolution, low-power consumption
  • Package: 24-pin SOIC (Small Outline Integrated Circuit)
  • Essence: Converts analog signals to digital data
  • Packaging/Quantity: Available in reels of 2500 units

Specifications

  • Resolution: 12 bits
  • Conversion Rate: 1 MSPS (Mega Samples Per Second)
  • Input Voltage Range: 0V to Vref (Reference Voltage)
  • Power Supply: +5V
  • Operating Temperature Range: -40°C to +85°C

Pin Configuration

The AD7847BR has a total of 24 pins. The pin configuration is as follows:

  1. REFOUT
  2. VREF
  3. AGND
  4. DGND
  5. VIN
  6. VDD
  7. DB11
  8. DB10
  9. DB9
  10. DB8
  11. DB7
  12. DB6
  13. DB5
  14. DB4
  15. DB3
  16. DB2
  17. DB1
  18. DB0
  19. CS
  20. RD
  21. WR
  22. A0
  23. A1
  24. A2

Functional Features

  • High-resolution ADC with 12-bit output
  • Fast conversion rate of 1 MSPS
  • Wide input voltage range from 0V to Vref
  • Low power consumption for energy-efficient operation
  • Internal reference voltage generation (VREF) for accurate conversions
  • Serial interface for easy integration with microcontrollers and other digital systems

Advantages and Disadvantages

Advantages: - High resolution provides precise digital representation of analog signals - Fast conversion rate allows for real-time data acquisition - Wide input voltage range accommodates a variety of signal levels - Low power consumption reduces energy usage and heat generation - Serial interface simplifies integration with digital systems

Disadvantages: - Limited to 12-bit resolution, which may not be sufficient for certain applications requiring higher precision - Requires an external reference voltage (VREF) for accurate conversions - Limited operating temperature range (-40°C to +85°C) may restrict usage in extreme environments

Working Principles

The AD7847BR is an analog-to-digital converter that converts continuous analog signals into discrete digital data. It utilizes a successive approximation algorithm to determine the digital representation of the input voltage. The input voltage is compared to a reference voltage (VREF) and the converter iteratively adjusts its internal digital code until it converges to the closest digital representation.

Detailed Application Field Plans

The AD7847BR can be used in various applications that require analog-to-digital conversion, such as:

  1. Data acquisition systems
  2. Industrial automation
  3. Medical instrumentation
  4. Audio processing
  5. Communication systems

Detailed and Complete Alternative Models

  1. AD7887BR - 12-bit ADC with higher operating temperature range (-40°C to +125°C)
  2. AD7824BR - 8-bit ADC with lower resolution but faster conversion rate (2 MSPS)
  3. AD7791BR - 16-bit ADC with lower conversion rate (250 kSPS) but higher resolution

These alternative models offer different trade-offs in terms of resolution, conversion rate, and operating temperature range, allowing users to choose the most suitable option for their specific application requirements.

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10 domande e risposte comuni relative all'applicazione di AD7847BR nelle soluzioni tecniche

Sure! Here are 10 common questions and answers related to the application of AD7847BR in technical solutions:

  1. Q: What is AD7847BR? A: AD7847BR is a 12-bit successive approximation analog-to-digital converter (ADC) manufactured by Analog Devices.

  2. Q: What is the operating voltage range of AD7847BR? A: The operating voltage range of AD7847BR is typically between 2.7V and 5.5V.

  3. Q: What is the maximum sampling rate of AD7847BR? A: AD7847BR has a maximum sampling rate of 200 kilosamples per second (ksps).

  4. Q: How many analog input channels does AD7847BR have? A: AD7847BR has 8 single-ended analog input channels.

  5. Q: Can AD7847BR be used for differential measurements? A: No, AD7847BR does not support differential measurements. It only supports single-ended measurements.

  6. Q: What is the resolution of AD7847BR? A: AD7847BR has a resolution of 12 bits, which means it can represent analog inputs with 4096 different digital values.

  7. Q: Does AD7847BR have an internal reference voltage? A: Yes, AD7847BR has an internal reference voltage of 2.5V, which can be used as a reference for the ADC conversion.

  8. Q: Can AD7847BR operate in a low-power mode? A: Yes, AD7847BR has a power-down mode that reduces its power consumption when not actively converting.

  9. Q: What is the interface used to communicate with AD7847BR? A: AD7847BR uses a serial interface called Serial Peripheral Interface (SPI) for communication with the microcontroller or processor.

  10. Q: Can AD7847BR be used in industrial applications? A: Yes, AD7847BR is suitable for various industrial applications such as process control, data acquisition, and instrumentation.

Please note that these answers are general and may vary depending on the specific requirements and use cases of your technical solution.