Analog Devices Inc.
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AD7851KN
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AD7851KN

Product Overview

Category

AD7851KN belongs to the category of analog-to-digital converters (ADCs).

Use

The AD7851KN is used to convert analog signals into digital data for various applications.

Characteristics

  • High-resolution conversion
  • Low power consumption
  • Wide input voltage range
  • Fast conversion speed

Package

AD7851KN comes in a 28-pin plastic dual in-line package (DIP).

Essence

The essence of AD7851KN lies in its ability to accurately and efficiently convert analog signals into digital form.

Packaging/Quantity

AD7851KN is typically packaged in reels and available in quantities of 1000 units per reel.

Specifications

  • Resolution: 12 bits
  • Input Voltage Range: ±10V
  • Conversion Speed: 1 MSPS (Mega Samples Per Second)
  • Power Supply: +5V
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The AD7851KN has a total of 28 pins. The pin configuration is as follows:

  1. VREF
  2. AGND
  3. REFOUT
  4. REFIN
  5. DGND
  6. D7
  7. D6
  8. D5
  9. D4
  10. D3
  11. D2
  12. D1
  13. D0
  14. CS
  15. RD
  16. WR
  17. A0
  18. A1
  19. A2
  20. A3
  21. A4
  22. A5
  23. A6
  24. A7
  25. CLK
  26. INTR
  27. CONVST
  28. VCC

Functional Features

  • High-resolution conversion: The AD7851KN offers 12-bit resolution, ensuring accurate conversion of analog signals.
  • Low power consumption: The device operates at low power, making it suitable for battery-powered applications.
  • Wide input voltage range: AD7851KN can handle a wide range of input voltages, allowing flexibility in various applications.
  • Fast conversion speed: With a conversion speed of 1 MSPS, the AD7851KN enables rapid data acquisition.

Advantages and Disadvantages

Advantages

  • High-resolution conversion ensures precise measurement accuracy.
  • Low power consumption extends battery life in portable devices.
  • Wide input voltage range allows compatibility with different signal sources.
  • Fast conversion speed enables real-time data processing.

Disadvantages

  • Limited to 12-bit resolution, which may not be sufficient for certain high-precision applications.
  • Requires an external reference voltage for accurate conversions.

Working Principles

The AD7851KN operates based on the successive approximation register (SAR) architecture. It samples the analog input voltage and performs a series of comparisons to determine the digital representation of the signal. The internal circuitry converts the analog voltage into a binary code, which is then outputted as digital data.

Detailed Application Field Plans

AD7851KN finds applications in various fields, including but not limited to: - Industrial automation - Data acquisition systems - Instrumentation - Medical equipment - Communication systems

Detailed and Complete Alternative Models

Some alternative models to AD7851KN include: - AD7852KN: Similar specifications but with 14-bit resolution - AD7854KN: Higher resolution (16-bit) version - AD7858BN: Lower resolution (10-bit) version with reduced cost

These alternative models provide options for different resolution requirements and cost considerations.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací AD7851KN v technických řešeních

Sure! Here are 10 common questions and answers related to the application of AD7851KN in technical solutions:

Q1: What is AD7851KN? A1: AD7851KN is a high-resolution, 12-bit analog-to-digital converter (ADC) manufactured by Analog Devices.

Q2: What is the operating voltage range of AD7851KN? A2: The operating voltage range of AD7851KN is typically between 4.75V and 5.25V.

Q3: What is the maximum sampling rate of AD7851KN? A3: AD7851KN has a maximum sampling rate of 100 kilosamples per second (ksps).

Q4: What is the resolution of AD7851KN? A4: AD7851KN has a resolution of 12 bits, which means it can represent analog signals with 4096 discrete levels.

Q5: Can AD7851KN be used for both single-ended and differential input measurements? A5: Yes, AD7851KN supports both single-ended and differential input measurements.

Q6: What is the input voltage range of AD7851KN? A6: The input voltage range of AD7851KN is typically between 0V and Vref, where Vref is the reference voltage supplied to the ADC.

Q7: Does AD7851KN have an internal reference voltage? A7: No, AD7851KN does not have an internal reference voltage. An external reference voltage must be provided.

Q8: What is the conversion time of AD7851KN? A8: The conversion time of AD7851KN depends on the selected sampling rate. For example, at a sampling rate of 100 ksps, the conversion time is 10 microseconds.

Q9: Is AD7851KN suitable for low-power applications? A9: Yes, AD7851KN is designed for low-power applications and has a power-down mode to minimize power consumption when not in use.

Q10: What interfaces does AD7851KN support? A10: AD7851KN supports a parallel interface, making it compatible with various microcontrollers and digital signal processors (DSPs).

Please note that these answers are general and may vary depending on the specific application and configuration of AD7851KN.