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AD7846JN

AD7846JN

Product Overview

Category

AD7846JN belongs to the category of integrated circuits (ICs).

Use

It is commonly used as a 12-bit successive approximation analog-to-digital converter (ADC) in various electronic applications.

Characteristics

  • Resolution: 12 bits
  • Conversion Rate: Up to 200k samples per second
  • Interface: Serial, SPI-compatible
  • Power Supply: +5V
  • Temperature Range: -40°C to +85°C

Package

AD7846JN is available in a 28-lead plastic dual in-line package (PDIP).

Essence

The essence of AD7846JN lies in its ability to convert analog signals into digital data with high precision and speed.

Packaging/Quantity

AD7846JN is typically packaged in tubes or trays, with quantities varying based on customer requirements.

Specifications

  • Resolution: 12 bits
  • Input Voltage Range: 0V to VREF
  • Reference Voltage Range: 2.5V to VDD
  • Total Unadjusted Error: ±1 LSB
  • Differential Nonlinearity: ±1 LSB
  • Integral Nonlinearity: ±1 LSB
  • Power Supply Voltage: +5V ±10%
  • Power Consumption: 15mW (typical)

Detailed Pin Configuration

AD7846JN has a total of 28 pins. The pin configuration is as follows:

  1. REF IN
  2. VDD
  3. AGND
  4. DGND
  5. VREF OUT
  6. VREF IN
  7. VREF CAP
  8. VREF BUF
  9. VREF BUF CAP
  10. VREF BUF CAP
  11. VREF BUF CAP
  12. VREF BUF CAP
  13. VREF BUF CAP
  14. VREF BUF CAP
  15. VREF BUF CAP
  16. VREF BUF CAP
  17. VREF BUF CAP
  18. VREF BUF CAP
  19. VREF BUF CAP
  20. VREF BUF CAP
  21. VREF BUF CAP
  22. VREF BUF CAP
  23. VREF BUF CAP
  24. VREF BUF CAP
  25. VREF BUF CAP
  26. VREF BUF CAP
  27. VREF BUF CAP
  28. VREF BUF CAP

Functional Features

  • 12-bit resolution provides high accuracy in converting analog signals.
  • Serial interface allows easy integration with microcontrollers and other digital devices.
  • SPI compatibility enables efficient communication with a wide range of systems.
  • Fast conversion rate of up to 200k samples per second ensures real-time data acquisition.

Advantages and Disadvantages

Advantages

  • High-resolution conversion for precise measurements.
  • Versatile serial interface for seamless integration.
  • Wide temperature range allows operation in various environments.
  • Low power consumption for energy-efficient applications.

Disadvantages

  • Limited input voltage range may restrict certain applications.
  • Requires an external reference voltage source for accurate conversions.

Working Principles

AD7846JN utilizes the successive approximation method to convert analog signals into digital data. It samples the input voltage, compares it with the internal reference voltage, and iteratively adjusts the digital output until the desired accuracy is achieved.

Detailed Application Field Plans

AD7846JN finds application in various fields, including but not limited to: - Industrial automation - Data acquisition systems - Medical equipment - Instrumentation and control systems - Communication devices

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to AD7846JN are: - AD7866: 12-bit ADC with additional features like on-chip temperature sensor and programmable alarm thresholds. - MCP3208: 12-bit ADC with SPI interface and 8 input channels. - MAX1241: 12-bit ADC with low power consumption and internal reference voltage.

These alternative models can be considered based on specific application requirements and system constraints.

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Liste 10 perguntas e respostas comuns relacionadas à aplicação de AD7846JN em soluções técnicas

Sure! Here are 10 common questions and answers related to the application of AD7846JN in technical solutions:

  1. Q: What is AD7846JN? A: AD7846JN is a 12-bit successive approximation analog-to-digital converter (ADC) with a built-in touch screen controller.

  2. Q: What is the operating voltage range of AD7846JN? A: The operating voltage range of AD7846JN is typically between 2.7V and 5.25V.

  3. Q: What is the maximum sampling rate of AD7846JN? A: AD7846JN has a maximum sampling rate of 125 kilosamples per second (ksps).

  4. Q: Can AD7846JN be used for multi-touch applications? A: No, AD7846JN does not support multi-touch functionality. It is designed for single-touch applications.

  5. Q: Does AD7846JN have an integrated reference voltage source? A: Yes, AD7846JN has an integrated 2.5V reference voltage source.

  6. Q: What is the resolution of AD7846JN? A: AD7846JN has a resolution of 12 bits, providing 4096 possible digital output values.

  7. Q: Can AD7846JN be used with both resistive and capacitive touch screens? A: Yes, AD7846JN can be used with both resistive and capacitive touch screens.

  8. Q: What is the typical power consumption of AD7846JN? A: The typical power consumption of AD7846JN is around 1.5 milliwatts (mW).

  9. Q: Does AD7846JN have any built-in digital filters? A: Yes, AD7846JN has a built-in digital filter that can be configured for different filtering options.

  10. Q: What is the package type of AD7846JN? A: AD7846JN is available in a 20-lead PDIP (Plastic Dual In-Line Package) package.

Please note that these answers are general and may vary depending on the specific datasheet and application requirements.