MCP3422A3-E/MS

Number of A/D Converters:	1
Base Part Number:	MCP3422A3
Supplier Device Package:	8-MSOP
Package / Case:	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Operating Temperature:	-40°C ~ 125°C
Features:	PGA
Voltage - Supply, Digital:	2.7 V ~ 5.5 V
Voltage - Supply, Analog:	2.7 V ~ 5.5 V
Reference Type:	Internal
Architecture:	Sigma-Delta
Series:	--
Ratio - S/H:ADC:	--
Configuration:	MUX-PGA-ADC
Data Interface:	I²C
Input Type:	Differential
Number of Inputs:	2
Sampling Rate (Per Second):	3.75
Number of Bits:	18
Part Status:	Active
Packaging:	Tube

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<h2>Introduction</h2><p>The MCP3422A3-E/MS is a precision Analog-to-Digital Converter (ADC) optimized for low-side current sensing applications. It uses Differential Delta-Sigma (ΔΣ) architecture to convert analog input signals to digital output with high resolution (14-bit) and accuracy (less than 0.02%) over the entire operating range. The device incorporates an on-chip SRAM data buffer to store ADC results and supports a wide variety of communication protocols for data transfer.</p><h2>Application Field</h2><p>The MCP3422A3-E/MS is well-suited for the measurement of low- side DC current in automotive, industrial, consumer and medical products. With its high resolution and accuracy, the MCP3422A3-E/MS offers a cost effective solution for accurate current sensing applications. It also supports a wide variety of communication protocols for data transfer and provides both buffered and unbuffered data outputs.</p><p>The MCP3422A3-E/MS is ideal for low-side current measurements such as battery current, motor current, and DCI current. It can also be used in systems such as electric vehicle charging, battery management, motor control, power supplies, and power conversion.</p><p>The MCP3422A3-E/MS is supported by a free graphical user interface (GUI) software which provides an easy to use platform to configure and program the MCP3422A3-E/MS, as well as monitor the inputs and outputs. This allows for easy evaluation and testing of the MCP3422A3-E/MS functionality, without the need for an external microcontroller.</p><h2>Working Principle</h2><p>The MCP3422A3-E/MS utilizes Differential Delta-Sigma (ΔΣ) architecture and an integrated SRAM data buffer for its analog-to-digital conversion. The ΔΣ architecture enables the ADC to provide high resolution (14-bit) and accuracy (less than 0.02%), while the SRAM data buffer allows for efficient handling of data transfers.</p><p>The MCP3422A3-E/MS features an integrated charge-pump for the input voltage range up to 5V. The charge-pump provides voltage step-up through an internal switch from 0-5V to 0-3.3V and can be used for applications requiring high input voltage levels such as automotive and industrial applications.</p><p>The MCP3422A3-E/MS device utilizes Differential Delta-Sigma (ΔΣ) architecture and an integrated SRAM data buffer for its analog-to-digital conversion. The Delta-Sigma architecture allows high resolution (14-bit) and accuracy (less than 0.02%), while the SRAM data buffer allows for efficient handling of data transfers. The MCP3422A3-E/MS also supports a wide variety of communication protocols, including I2C, SPI and UART, which enable the user to easily interface with any number of devices.</p><h2>Features</h2><p>At the core of the MCP3422A3-E/MS is a 14-bit delta-sigma ADC with 14-bit digital-to-analog conversion. The MCP3422A3-E/MS also offers several features such as programmable gain, automatic calibration, averaging, low current consumption and a wide range of voltage levels. Additionally, the device integrates an SRAM data buffer, which enables efficient data transfer and storage of data.</p><p>The MCP3422A3-E/MS also incorporates an on-chip low-pass filter to reduce noise, providing immunity from environmental noise. Lastly, the device includes a built-in watchdog timer to detect possible communication failure and automatically reset the device.</p><h2>Conclusion</h2><p>The MCP3422A3-E/MS is a precision Analog-to-Digital Converter designed for low-side current sensing applications. It features a 14-bit delta-sigma ADC with 14-bit digital-to-analog conversion and an integrated SRAM data buffer for efficient data transfer. The device also incorporates an on-chip low-pass filter, watch dog timer and automatic calibration capabilities for additional convenience. The MCP3422A3-E/MS is well suited for automotive, industrial, consumer and medical applications and provides a cost effective solution for accurate current sensing applications.</p>

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