QD Devices Inc.
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AD7904BRU
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AD7904BRU

Product Overview

Category

AD7904BRU belongs to the category of analog-to-digital converters (ADCs).

Use

The AD7904BRU is used to convert analog signals into digital data for processing and analysis in various applications.

Characteristics

  • High precision: The AD7904BRU offers high-resolution conversion with low noise, ensuring accurate signal representation.
  • Fast conversion rate: It provides a fast sampling rate, enabling real-time data acquisition.
  • Low power consumption: The device operates at low power, making it suitable for battery-powered applications.
  • Wide input voltage range: The AD7904BRU can handle a wide range of input voltages, accommodating diverse signal sources.

Package

The AD7904BRU comes in a small outline integrated circuit (SOIC) package.

Essence

The essence of the AD7904BRU lies in its ability to convert analog signals into digital form, facilitating further processing and analysis.

Packaging/Quantity

The AD7904BRU is typically packaged in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

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

Detailed Pin Configuration

The AD7904BRU has a total of 16 pins. Here is the detailed pin configuration:

  1. VREF-
  2. VREF+
  3. AGND
  4. VIN1
  5. VIN2
  6. VIN3
  7. VIN4
  8. DGND
  9. SCLK
  10. CS
  11. SDATA
  12. RD
  13. BUSY
  14. PD
  15. VDD
  16. VIO

Functional Features

  • High-resolution conversion: The AD7904BRU provides 12-bit resolution, ensuring accurate representation of analog signals.
  • Serial interface: It supports a serial interface for easy integration with microcontrollers or other digital systems.
  • On-chip reference: The device includes an on-chip voltage reference, eliminating the need for external references.
  • Low power consumption: The AD7904BRU operates at low power, making it suitable for power-constrained applications.

Advantages and Disadvantages

Advantages

  • High precision conversion
  • Fast sampling rate
  • Wide input voltage range
  • Low power consumption
  • Integrated voltage reference

Disadvantages

  • Limited resolution compared to higher-end ADCs
  • Single-ended input configuration only

Working Principles

The AD7904BRU utilizes successive approximation register (SAR) architecture to convert analog signals into digital data. It samples the input voltage, compares it to a reference voltage, and iteratively determines the digital representation by adjusting the comparison level.

Detailed Application Field Plans

The AD7904BRU finds applications in various fields, including: 1. Industrial automation: Used for process control and monitoring systems. 2. Medical devices: Enables precise measurement and analysis of physiological signals. 3. Test and measurement equipment: Provides accurate data acquisition for scientific instruments. 4. Communication systems: Used in signal processing and modulation/demodulation applications. 5. Automotive electronics: Facilitates sensor data acquisition and control in automotive systems.

Detailed and Complete Alternative Models

  1. AD7908BRU: Similar to AD7904BRU but with 8 channels instead of 4.
  2. AD7912BRU: Higher-resolution ADC with 12-bit conversion capability.
  3. AD7980BRU: Offers higher sampling rate and lower power consumption than AD7904BRU.

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Sebutkan 10 pertanyaan dan jawaban umum terkait penerapan AD7904BRU dalam solusi teknis

Sure! Here are 10 common questions and answers related to the application of AD7904BRU in technical solutions:

  1. Q: What is AD7904BRU? A: AD7904BRU is a 12-bit, 4-channel analog-to-digital converter (ADC) with a serial interface.

  2. Q: What is the operating voltage range of AD7904BRU? A: The operating voltage range of AD7904BRU is typically between 2.7V and 5.25V.

  3. Q: How many analog input channels does AD7904BRU have? A: AD7904BRU has 4 analog input channels.

  4. Q: What is the resolution of AD7904BRU? A: AD7904BRU has a resolution of 12 bits, which means it can represent analog signals with 4096 different levels.

  5. Q: What is the maximum sampling rate of AD7904BRU? A: The maximum sampling rate of AD7904BRU is 1 MSPS (Mega Samples Per Second).

  6. Q: Does AD7904BRU have an internal reference voltage? A: No, AD7904BRU does not have an internal reference voltage. An external reference voltage needs to be provided.

  7. Q: Can AD7904BRU operate in single-ended mode? A: Yes, AD7904BRU can operate in both single-ended and differential modes.

  8. Q: What is the power consumption of AD7904BRU? A: The power consumption of AD7904BRU depends on the operating conditions but typically ranges from 1.5mW to 3mW.

  9. Q: Does AD7904BRU have built-in digital filters? A: No, AD7904BRU does not have built-in digital filters. External filters can be used if required.

  10. Q: What is the package type of AD7904BRU? A: AD7904BRU is available in a 16-lead TSSOP (Thin Shrink Small Outline Package) package.

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