AD7858BRZ-REEL

Product Overview

Category

AD7858BRZ-REEL belongs to the category of analog-to-digital converters (ADCs).

Use

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

Characteristics

• High-resolution conversion: AD7858BRZ-REEL offers a resolution of up to 16 bits, ensuring accurate digitization of analog signals.
• Fast conversion rate: With a maximum sampling rate of 1 MSPS (Mega Samples Per Second), this ADC can handle high-speed signal acquisition.
• Low power consumption: The AD7858BRZ-REEL is designed to operate efficiently with low power requirements, making it suitable for portable and battery-powered devices.
• Wide input voltage range: It supports a wide input voltage range, allowing for versatile signal acquisition from various sources.
• Serial interface: This ADC utilizes a serial interface for easy integration with microcontrollers and other digital systems.

Package and Quantity

The AD7858BRZ-REEL is available in a small outline package (SOIC) with 28 pins. It is typically sold in reels containing multiple units.

Specifications

• Resolution: Up to 16 bits
• Sampling Rate: Up to 1 MSPS
• Input Voltage Range: ±VREF
• Power Supply: +5V
• Operating Temperature Range: -40°C to +85°C
• Interface: Serial (SPI/I2C)

Pin Configuration

The AD7858BRZ-REEL has a total of 28 pins arranged as follows:

Pin 1: VDD Pin 2: REFOUT Pin 3: AGND Pin 4: VREF Pin 5: VIN(+) CH0 Pin 6: VIN(-) CH0 ... Pin 27: DOUT Pin 28: DGND

Functional Features

• High-resolution conversion: The AD7858BRZ-REEL provides accurate digitization of analog signals with its high-resolution capability.
• Flexible input configuration: It supports differential and single-ended input modes, allowing for versatile signal acquisition.
• Programmable gain amplifier: This ADC includes a programmable gain amplifier that enables amplification of weak signals for better resolution.
• Internal reference voltage: The built-in reference voltage source eliminates the need for an external reference, simplifying system design.

Advantages and Disadvantages

Advantages

• High-resolution conversion ensures precise measurement and analysis of analog signals.
• Fast conversion rate allows for real-time data acquisition in time-critical applications.
• Low power consumption makes it suitable for battery-powered devices.
• Wide input voltage range enables compatibility with various signal sources.
• Serial interface simplifies integration with digital systems.

Disadvantages

• Limited number of channels may restrict simultaneous signal acquisition from multiple sources.
• Requires external microcontroller or digital system for complete functionality.

Working Principles

The AD7858BRZ-REEL operates based on the successive approximation register (SAR) architecture. It samples the analog input voltage, converts it into a digital representation using a comparator and a binary search algorithm, and outputs the result through the serial interface.

Application Field Plans

The AD7858BRZ-REEL finds applications in various fields, including: 1. Industrial automation: Used for process control, data acquisition, and monitoring systems. 2. Medical equipment: Enables accurate measurement and analysis of physiological signals. 3. Test and measurement instruments: Provides high-resolution signal acquisition for precise measurements. 4. Communication systems: Used for signal processing and modulation/demodulation applications. 5. Automotive electronics: Enables sensor data acquisition and control in automotive systems.

Alternative Models

1. AD7856: Similar to AD7858BRZ-REEL but with 12-bit resolution.
2. AD7854: Lower-resolution version with 10-bit ADC.
3. AD7869: Higher-resolution ADC with 18-bit capability.

These alternative models offer different resolution options to suit specific application requirements.

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