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MCP3424-E/SL

MCHPMCP3424-E/SL

Microchip Technology
Multi-channel delta-sigma ADC family with I2C interface that can be used as an alternative for high-resolution measurements.
NRND14,083 in stock
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Overview

The MCP3424-E/SL is a four-channel, 18-bit delta-sigma analog-to-digital converter (ADC) featuring an integrated programmable gain amplifier (PGA) and an I2C interface. It provides high-resolution differential inputs and self-calibration of internal offset and gain for consistent accuracy over its 2.7V to 5.5V operating range.

Why Choose This Part

This ADC simplifies system design by integrating an internal voltage reference, oscillator, and a PGA, reducing external component count. It offers high precision with a 0.05 percent accuracy rating and features a low sleep current of approximately 0.3 microamps for battery-critical applications.

Applications

Precision Temperature Sensing
Utilizing the 18-bit resolution and PGA to interface directly with RTDs and thermocouples for high-accuracy thermal monitoring.
Industrial Flow and Pressure Monitoring
Digitizing low-voltage differential signals from bridge sensors and pressure transducers in harsh environments.
Battery Voltage Monitoring
Leveraging the multi-channel capability and low power consumption (0.145mA at 5.0V) for precise cell balancing and state-of-charge tracking.
Weigh Scales
Capturing microvolt-level changes from load cells using the on-board PGA and delta-sigma architecture to filter noise.

Key Specifications

Features PGA, Selectable Address
Input Type Differential
Architecture Sigma-Delta
Configuration MUX-PGA-ADC
Mounting Type Surface Mount
Data Interface I2C
Number of Bits 18
Package / Case 14-SOIC (0.154", 3.90mm Width)
Reference Type Internal
Number of Inputs 4
Operating Temperature -40degC ~ 125degC
Supplier Device Package 14-SOIC
Number of A/D Converters 1
Voltage - Supply, Analog 2.7V ~ 5.5V
Voltage - Supply, Digital 2.7V ~ 5.5V
Sampling Rate (Per Second) 3.75

Getting Started

To evaluate this part, use the MCP3424 Evaluation Board (ADM00291) which connects to a PC via the PICkit Serial Analyzer. When coding, ensure the I2C address pins are configured to match the software, and use the on-board self-calibration feature to maintain accuracy across temperature shifts.

Also Consider

ADS1115 TITexas Instruments - Offers a faster sampling rate at 16-bit resolution for applications requiring higher throughput.

Categories

Interface ICs > ADC & DAC
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