Analog Devices Inc.
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AD7678ACPZ
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AD7678ACPZ

Product Overview

  • Category: Analog-to-Digital Converter (ADC)
  • Use: The AD7678ACPZ is a high-performance, 18-bit, successive approximation register (SAR) ADC designed for precision measurement applications.
  • Characteristics: It offers exceptional linearity and low noise performance, making it suitable for demanding signal acquisition systems.
  • Package: The AD7678ACPZ is available in a small footprint, leadless LFCSP package, providing space-saving benefits for compact designs.
  • Essence: This ADC is essential for accurate conversion of analog signals into digital data in various industrial and instrumentation applications.
  • Packaging/Quantity: It is typically supplied in reels with a specified quantity per reel.

Specifications

  • Resolution: 18 bits
  • Sampling Rate: Up to 1 MSPS (Million Samples Per Second)
  • Input Range: Bipolar input range of ±10V
  • Power Supply: Wide operating voltage range with low power consumption
  • Temperature Range: Extended temperature range suitable for harsh environments

Detailed Pin Configuration

The AD7678ACPZ features a 32-lead LFCSP package with the following pin configuration: 1. VIN- 2. VIN+ 3. REF- 4. REF+ 5. AGND 6. DGND 7. SCLK 8. SDATA 9. CNVST 10. VDD 11. VIO 12. VREFOUT 13. DOUTA 14. DOUTB 15. DOUTC 16. DOUTD 17. DOUTE 18. DOUTF 19. DOUTG 20. DOUTH 21. DOUTI 22. DOUTJ 23. DOUTK 24. DOUTL 25. DOUTM 26. DOUTN 27. DOUTO 28. DOUTP 29. DOUTQ 30. DOUTR 31. DOUTS 32. DOUTT

Functional Features

  • High-resolution conversion with exceptional linearity
  • Low noise performance for accurate signal acquisition
  • Flexible input range and wide operating voltage
  • Serial interface for easy integration with microcontrollers or DSPs
  • Built-in reference and reference buffer for simplified system design

Advantages and Disadvantages

Advantages

  • High resolution and accuracy
  • Low noise for precise signal capture
  • Wide input range for versatile applications
  • Compact package for space-constrained designs
  • Integrated reference and reference buffer for simplified circuitry

Disadvantages

  • Higher power consumption compared to lower resolution ADCs
  • Higher cost compared to lower precision ADCs

Working Principles

The AD7678ACPZ utilizes a SAR architecture to achieve high-resolution analog-to-digital conversion. It employs a capacitive DAC and successive approximation algorithm to accurately digitize the input analog signal. The integrated reference and reference buffer ensure consistent and reliable performance across varying operating conditions.

Detailed Application Field Plans

The AD7678ACPZ is well-suited for a wide range of precision measurement and data acquisition applications, including: - Industrial automation - Test and measurement equipment - Medical instrumentation - Energy management systems - Precision control systems

Detailed and Complete Alternative Models

For applications requiring different resolution or speed specifications, alternative models to consider include: - AD4003: 20-bit, 2 MSPS SAR ADC - AD7091R: 12-bit, 1 MSPS SAR ADC with integrated reference - AD7982: 16-bit, 1 MSPS SAR ADC with low power consumption

In conclusion, the AD7678ACPZ offers high-performance analog-to-digital conversion capabilities, making it an ideal choice for precision measurement applications that demand exceptional accuracy and reliability.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací AD7678ACPZ v technických řešeních

  1. What is the AD7678ACPZ?

    • The AD7678ACPZ is a high-performance, 18-bit analog-to-digital converter (ADC) designed for precision measurement applications.

  2. What is the input voltage range of the AD7678ACPZ?

    • The AD7678ACPZ has a bipolar input voltage range of ±10V, making it suitable for a wide range of signal processing applications.

  3. What is the maximum sampling rate of the AD7678ACPZ?

    • The AD7678ACPZ can achieve a maximum sampling rate of 250 kSPS (kilo samples per second), enabling high-speed data acquisition.

  4. What are the key features of the AD7678ACPZ?

    • The key features of the AD7678ACPZ include low noise, high accuracy, and a flexible digital interface, making it ideal for precision measurement systems.

  5. What is the power supply requirement for the AD7678ACPZ?

    • The AD7678ACPZ operates from a single 5V power supply and consumes low power, making it suitable for portable and low-power applications.

  6. Does the AD7678ACPZ support daisy-chaining for multiple ADCs?

    • Yes, the AD7678ACPZ supports daisy-chaining, allowing multiple ADCs to be synchronized and controlled using a single serial interface.

  7. What are the typical applications of the AD7678ACPZ?

    • Typical applications of the AD7678ACPZ include industrial automation, instrumentation, medical equipment, and precision sensor interfaces.

  8. Does the AD7678ACPZ offer built-in diagnostic features?

    • Yes, the AD7678ACPZ includes built-in diagnostic features such as a reference monitor and a temperature sensor, enabling system health monitoring.

  9. What is the resolution and linearity of the AD7678ACPZ?

    • The AD7678ACPZ offers 18-bit resolution and excellent linearity, ensuring accurate conversion of analog signals to digital data.

  10. Is the AD7678ACPZ compatible with standard microcontroller interfaces?

    • Yes, the AD7678ACPZ is compatible with standard microcontroller interfaces such as SPI and I2C, simplifying integration into existing systems.