QD
Зображення може бути репрезентативним.
Деталі продукту див. у специфікаціях.
AD7890AN-2
Переглянути деталі Таблиці даних

AD7890AN-2

Product Overview

Category

AD7890AN-2 belongs to the category of analog-to-digital converters (ADCs).

Use

The AD7890AN-2 is used to convert analog signals into digital data for processing and analysis in various applications.

Characteristics

  • High-resolution: The AD7890AN-2 offers a resolution of 12 bits, ensuring accurate conversion of analog signals.
  • Low power consumption: It operates at low power levels, making it suitable for battery-powered devices.
  • Fast conversion rate: With a maximum conversion rate of 100 kilosamples per second (ksps), it provides real-time data acquisition.
  • Wide input voltage range: The ADC can handle input voltages ranging from 0V to Vref, allowing flexibility in signal measurement.
  • Serial interface: It features a serial interface that simplifies integration with microcontrollers and other digital systems.

Package

The AD7890AN-2 comes in a small outline integrated circuit (SOIC) package, which ensures ease of installation and compatibility with standard PCB designs.

Essence

The essence of the AD7890AN-2 lies in its ability to accurately convert analog signals into digital data, enabling further processing and analysis.

Packaging/Quantity

The AD7890AN-2 is typically available in tape and reel packaging, with a quantity of 250 units per reel.

Specifications

  • Resolution: 12 bits
  • Conversion Rate: Up to 100 ksps
  • Input Voltage Range: 0V to Vref
  • Interface: Serial
  • Power Supply: 2.7V to 5.25V
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The AD7890AN-2 has a total of 16 pins, each serving a specific function. Here is the detailed pin configuration:

  1. VDD: Power supply voltage
  2. VREF: Reference voltage for the ADC conversion
  3. AGND: Analog ground
  4. REFOUT: Buffered reference output
  5. VIN: Analog input voltage
  6. SCLK: Serial clock input
  7. CS: Chip select input
  8. SDATA: Serial data output
  9. DGND: Digital ground
  10. DOUT/DRDY: Data output/Conversion ready indicator
  11. PD: Power-down mode control
  12. RD: Read control input
  13. WR: Write control input
  14. A0-A3: Address inputs
  15. REFIN: External reference input
  16. VSS: Negative power supply

Functional Features

High-Resolution Conversion

The AD7890AN-2 offers a 12-bit resolution, ensuring accurate conversion of analog signals into digital data.

Fast Conversion Rate

With a maximum conversion rate of 100 ksps, the AD7890AN-2 enables real-time data acquisition, making it suitable for time-sensitive applications.

Low Power Consumption

Operating at low power levels, the AD7890AN-2 is ideal for battery-powered devices, extending their battery life.

Serial Interface

The ADC features a serial interface that simplifies integration with microcontrollers and other digital systems, enabling seamless communication and control.

Advantages and Disadvantages

Advantages

  • High-resolution conversion ensures accurate data acquisition.
  • Fast conversion rate allows real-time signal processing.
  • Low power consumption extends battery life in portable devices.
  • Serial interface simplifies integration with digital systems.

Disadvantages

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

Working Principles

The AD7890AN-2 operates based on the successive approximation register (SAR) architecture. It samples the analog input voltage and compares it to a reference voltage. By iteratively adjusting the digital code, it converges to a value that represents the input voltage with the desired resolution.

Detailed Application Field Plans

The AD7890AN-2 finds applications in various fields, including: 1. Industrial automation: Used for data acquisition and control systems. 2. Medical devices: Enables accurate measurement of physiological signals. 3. Test and measurement equipment: Provides high-resolution signal analysis capabilities. 4. Communication systems: Used for signal processing and modulation/demodulation tasks. 5. Automotive electronics: Enables precise sensor measurements for vehicle control systems.

Detailed and Complete Alternative Models

  1. AD7891AN-2: Similar to AD7890AN-2 but offers 10-bit resolution.
  2. AD7892AN-2: Higher-resolution variant with 14-bit conversion capability.
  3. AD7893AN-2: Offers 8-bit resolution and lower power consumption.
  4. AD7894AN-2: 16-bit ADC with enhanced accuracy and performance.

These alternative models provide options with varying resolutions

Перелічіть 10 типових запитань і відповідей, пов’язаних із застосуванням AD7890AN-2 у технічних рішеннях

Sure! Here are 10 common questions and answers related to the application of AD7890AN-2 in technical solutions:

  1. Q: What is the AD7890AN-2? A: The AD7890AN-2 is a high-speed, low-power, 12-bit analog-to-digital converter (ADC) manufactured by Analog Devices.

  2. Q: What is the operating voltage range of the AD7890AN-2? A: The AD7890AN-2 operates from a single power supply voltage range of 2.7V to 5.25V.

  3. Q: What is the maximum sampling rate of the AD7890AN-2? A: The AD7890AN-2 has a maximum sampling rate of 100 kilosamples per second (ksps).

  4. Q: What is the resolution of the AD7890AN-2? A: The AD7890AN-2 has a resolution of 12 bits, which means it can represent analog signals with 4096 discrete levels.

  5. Q: What is the input voltage range of the AD7890AN-2? A: The AD7890AN-2 has an input voltage range of 0V to VREF, where VREF is the reference voltage provided to the ADC.

  6. Q: Does the AD7890AN-2 require an external reference voltage? A: Yes, the AD7890AN-2 requires an external reference voltage to be provided for accurate conversion. It does not have an internal reference.

  7. Q: What is the interface of the AD7890AN-2? A: The AD7890AN-2 uses a serial interface, specifically a 3-wire serial interface, for communication with microcontrollers or other digital devices.

  8. Q: Can the AD7890AN-2 operate in a low-power mode? A: Yes, the AD7890AN-2 has a power-down mode that reduces its power consumption when not actively converting analog signals.

  9. Q: What is the typical conversion time of the AD7890AN-2? A: The typical conversion time of the AD7890AN-2 is 10 microseconds (µs).

  10. Q: What are some common applications of the AD7890AN-2? A: The AD7890AN-2 is commonly used in various applications such as data acquisition systems, industrial automation, medical instrumentation, and sensor interfaces.

Please note that these answers are based on general knowledge about the AD7890AN-2 and may vary depending on specific requirements and use cases. It's always recommended to refer to the datasheet and consult with technical experts for accurate information.