MCP3421DM-WS Microchip Technology, MCP3421DM-WS Datasheet - Page 9

• Manufacturer Part Number: MCP3421DM-WS
• Description: Data Conversion IC Development Tools WT SCALE DEMO BRD 18 I/O 10-BIT ADC
• Manufacturer: Microchip Technology
• Type: ADCr

Specifications of MCP3421DM-WS

• Product: Demonstration Boards
• Tool Is For Evaluation Of: MCP3421
• Interface Type: I2C
• Operating Supply Voltage: 5 V

1.1
 2010 Microchip Technology Inc.
OVERVIEW
The MCP3421 Weight Scale Demo Board works with the LabVIEW™ Graphical User
Interface (GUI) PC Software. This demo board demonstrates how to use the MCP3421
18-bit Delta-Sigma ADC for weight scale applications. It uses the PIC18F4550 micro-
controller for data processing and USB communication with PC. This board also dem-
onstrates the changes in the system performance by adjusting the parameters of the
sensor signal conditioning circuits using the MCP6V07 auto-zeroed op amp.
1.1.1
• The LCD displays the user’s selected option and the ADC output code or the
• The user can select the signal averaging factor (1 or 4) by pressing the S3 button.
• System performance analysis using PC GUI: the interface allows various
• Hardware PCB design examples: this demo board utilizes a robust grounding
• Signal conditioning examples using MCP6V07: the low-noise op amp is used to
• 2 Kg load cell with 1 mV/V sensitivity.
FIGURE 1-1:
calculated results.
The selected option is displayed on the LCD.
interactive post signal processing, such as standard deviations and histogram.
method of analog circuits in PCB design. It also demonstrates how to split analog
and digital ground planes.
boost input signal levels.
Chapter 1. Product Overview
Feature Highlights
MCP3421 Weight Scale Demo Board.
DEMO BOARD USER’S GUIDE
MCP3421 WEIGHT SCALE
DS51918A-page 9