Microchip Technology MCP3422A5-E/MC

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Product attributes Property Value
Manufacturer Microchip Technology
Product Series
Packaging Tube |
Number of Bits 18
Sampling Rate (Per Second) 3.75
Number of Inputs 2
Input Type Differential
Data Interface I2C
Configuration MUX-PGA-ADC
Ratio - S/H:ADC -
Number of A/D Converters 1
Architecture Sigma-Delta
Reference Type Internal
Voltage - Supply, Analog 2.7V ~ 5.5V
Voltage - Supply, Digital 2.7V ~ 5.5V
Features PGA
Operating Temperature -40°C ~ 125°C
Mounting Type Surface Mount
Grade -
Qualification -
Package / Case 8-VFDFN Exposed Pad
Supplier Device Package 8-DFN (2x3)
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The MCP3422A5-E/MC is a versatile 18-bit ADC from Microchip Technology, offering a 2-channel input multiplexer and an integrated programmable gain amplifier. It samples at 3.75 SPS, ensuring high accuracy for low-frequency signals. The device features an internal reference and communicates over the I2C bus, reducing wiring complexity. Housed in a compact 8-VFDFN package, it operates across a wide temperature range, making it a robust choice for industrial and portable sensing applications.

  • Exceptional Accuracy: 18-bit resolution ensures precise conversion of analog signals.
  • Built-in PGA: Amplifies weak sensor signals, eliminating the need for external op-amps.
  • Dual Channel Input: Monitors two separate differential signals, increasing system flexibility.
  • I2C Compatibility: Standard interface reduces pin count and simplifies PCB layout.
  • Industrial Temperature Range: Operates reliably from -40°C to 125°C.

High-Resolution Data Logging

The 18-bit resolution and 3.75 SPS sampling rate are perfect for data loggers that require precise measurement of slowly changing signals like temperature and humidity.

Battery-Powered Instrumentation

Low power consumption makes the MCP3422A5-E/MC suitable for handheld multimeters and field instruments where battery life is critical.

Industrial Sensor Conditioning

The internal PGA allows direct interfacing with 4-20mA loop transmitters and voltage output sensors, simplifying signal conditioning in PLCs and industrial controllers.

Precision Agriculture

Use in soil nutrient monitors and weather stations to accurately digitize sensor outputs over long cable runs, thanks to the differential inputs.

Laboratory Equipment

Ideal for bench-top measurement devices like pH meters and conductivity meters that need stable and repeatable readings.

Energy Monitoring Systems

Can be used in power quality analyzers to measure voltage and current with high precision for energy management applications.

Q: What is the MCP3422A5-E/MC?
A: It is an 18-bit analog-to-digital converter (ADC) from Microchip with a built-in multiplexer and programmable gain amplifier.
Q: What is the resolution of this device?
A: The resolution is 18 bits, allowing for very fine voltage measurements.
Q: What is the sampling rate?
A: The sampling rate is 3.75 SPS, designed for high-accuracy, low-speed applications.
Q: How many channels does it have?
A: It has 2 differential input channels that can be selected via the I2C interface.
Q: What interface does it use?
A: It uses the I2C serial communication protocol for control and data transfer.
Q: What is the package type?
A: It comes in an 8-VFDFN package with an exposed pad for thermal management.
Base Product Number : MCP3422A5
18-bit 2-Channel 3.75 SPS ADC Analog-to-Digital Converter I2C Low Power Microchip PGA VFDFN-8
Q: What is the MCP3422A5-E/MC?
A: It is an 18-bit analog-to-digital converter (ADC) from Microchip with a built-in multiplexer and programmable gain amplifier.
Q: What is the resolution of this device?
A: The resolution is 18 bits, allowing for very fine voltage measurements.
Q: What is the sampling rate?
A: The sampling rate is 3.75 SPS, designed for high-accuracy, low-speed applications.
Q: How many channels does it have?
A: It has 2 differential input channels that can be selected via the I2C interface.
Q: What interface does it use?
A: It uses the I2C serial communication protocol for control and data transfer.
Q: What is the package type?
A: It comes in an 8-VFDFN package with an exposed pad for thermal management.