MCP3426A1-E/SN

Product Overview

Category

The MCP3426A1-E/SN belongs to the category of analog-to-digital converters (ADCs).

Use

This product is used for converting analog signals into digital data, making it suitable for various applications that require precise and accurate measurements.

Characteristics

• High resolution: The MCP3426A1-E/SN offers a resolution of up to 18 bits, allowing for highly accurate conversions.
• Low noise: It features low noise performance, ensuring reliable and clean signal acquisition.
• Programmable gain amplifier: This ADC includes a programmable gain amplifier, enabling users to adjust the gain according to their specific requirements.
• Onboard reference voltage: The MCP3426A1-E/SN incorporates an onboard reference voltage, eliminating the need for external references.
• Low power consumption: It operates at low power, making it suitable for battery-powered applications.

Package and Quantity

The MCP3426A1-E/SN is available in an SOIC package. It is typically sold in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Resolution: Up to 18 bits
• Input voltage range: ±2.048V, ±1.024V, ±0.512V, ±0.256V
• Programmable gain options: 1, 2, 4, 8
• Conversion rate: Up to 240 samples per second
• Operating voltage: 2.7V to 5.5V
• Operating temperature range: -40°C to +125°C

Pin Configuration

The MCP3426A1-E/SN has a total of 8 pins, which are assigned as follows:

1. VDD: Power supply voltage input
2. AIN1: Analog input channel 1
3. AIN2: Analog input channel 2
4. GND: Ground reference
5. SDA: Serial data input/output
6. SCL: Serial clock input
7. ADDR0: Address selection bit 0
8. ADDR1: Address selection bit 1

Functional Features

• High-resolution ADC with programmable gain amplifier
• Onboard reference voltage for simplified design
• Low noise performance for accurate signal acquisition
• I2C interface for easy integration with microcontrollers
• Configurable conversion rate for flexibility in different applications

Advantages and Disadvantages

Advantages

• High resolution allows for precise measurements
• Low noise ensures reliable signal acquisition
• Programmable gain amplifier provides flexibility in signal amplification
• Onboard reference voltage simplifies circuit design
• Low power consumption extends battery life in portable applications

Disadvantages

• Limited input voltage range compared to some other ADCs
• Higher cost compared to lower-resolution ADCs

Working Principles

The MCP3426A1-E/SN operates by converting analog signals into digital data using a successive approximation register (SAR) architecture. The analog input is amplified by the programmable gain amplifier before being sampled and converted into digital form. The onboard reference voltage is used as a reference for the conversion process, ensuring accuracy and stability.

Application Field Plans

The MCP3426A1-E/SN finds application in various fields, including but not limited to: - Industrial automation - Data acquisition systems - Medical equipment - Environmental monitoring - Power management systems

Alternative Models

Some alternative models that offer similar functionality to the MCP3426A1-E/SN include: - ADS1115 from Texas Instruments - LTC2400 from Linear Technology - MAX11646 from Maxim Integrated

These alternatives provide options for users based on their specific requirements and preferences.

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