AD7891ASZ-2REEL

Product Overview

Category

The AD7891ASZ-2REEL belongs to the category of analog-to-digital converters (ADCs).

Use

This product is primarily used for converting analog signals into digital data, making it suitable for a wide range of applications in various industries.

Characteristics

• High precision: The AD7891ASZ-2REEL offers high-resolution conversion, ensuring accurate and reliable digital representation of analog signals.
• Fast conversion speed: With its high-speed conversion capability, this ADC can handle real-time data acquisition requirements efficiently.
• Low power consumption: The device is designed to operate with minimal power consumption, making it suitable for battery-powered applications.
• Wide input voltage range: The ADC can accept a broad range of input voltages, allowing it to accommodate different signal levels.
• Small package size: The AD7891ASZ-2REEL comes in a compact package, enabling space-saving integration into various electronic systems.

Package and Quantity

The AD7891ASZ-2REEL is available in a surface-mount package. Each reel contains a specified quantity of these ADCs, typically 250 or 1000 units.

Specifications

• Resolution: 12 bits
• Sampling Rate: Up to 100 kSPS (thousand samples per second)
• Input Voltage Range: ±10V
• Power Supply: +5V
• Operating Temperature Range: -40°C to +85°C
• Interface: Serial (SPI/I2C)

Pin Configuration

The AD7891ASZ-2REEL has the following pin configuration:

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| | | AD7891ASZ-2REEL | |_______________________________________| | | | 1 2 3 4 5 6 7 8 | |_______________________________________| ```

Pin Description: 1. VDD: Power supply voltage 2. GND: Ground reference 3. IN+: Positive analog input 4. IN-: Negative analog input 5. CS: Chip select (active low) 6. SCLK: Serial clock input 7. SDATA: Serial data output 8. REF: Reference voltage input

Functional Features

• High-resolution conversion: The AD7891ASZ-2REEL provides accurate digital representation of analog signals with its 12-bit resolution.
• Flexible input range: The ADC accepts a wide range of input voltages, allowing for versatile signal acquisition.
• Low power consumption: Designed for energy efficiency, the device minimizes power consumption without compromising performance.
• Serial interface: The ADC utilizes a serial interface (SPI/I2C) for easy integration into various digital systems.
• Fast conversion speed: With a sampling rate of up to 100 kSPS, the ADC can handle real-time data acquisition requirements effectively.

Advantages and Disadvantages

Advantages

• High precision and accuracy in analog-to-digital conversion
• Wide input voltage range accommodates various signal levels
• Low power consumption for energy-efficient operation
• Compact package size enables space-saving integration
• Fast conversion speed for real-time data acquisition

Disadvantages

• Limited resolution compared to higher-end ADCs
• Requires an external reference voltage for accurate conversions

Working Principles

The AD7891ASZ-2REEL operates based on the successive approximation register (SAR) architecture. It converts analog signals into digital data by comparing the input voltage against a reference voltage and determining the closest digital representation using a binary search algorithm. The conversion process is controlled by an internal clock and control logic.

Application Field Plans

The AD7891ASZ-2REEL finds applications in various fields, including but not limited to: - Industrial automation - Medical equipment - Test and measurement instruments - Data acquisition systems - Automotive electronics - Communication devices

Alternative Models

For alternative options with similar functionality, the following ADC models can be considered: - AD7890ASZ-2REEL - AD7892ASZ-2REEL - AD7893ASZ-2REEL - AD7894ASZ-2REEL

These models offer different resolutions, sampling rates, or additional features that may better suit specific application requirements.

In conclusion, the AD7891ASZ-2REEL is a high-precision analog-to-digital converter with fast conversion speed, low power consumption, and a wide input voltage range. It finds applications in various industries and can be integrated into different electronic systems. While it has some limitations, such as limited resolution and the need for an external reference voltage, alternative models are available to cater to specific needs.