Microchip Technology MCP3425EV User Manual

© 2009 Microchip Technology Inc.

DS51787A-page 5

The following sections provide an overview of the MCP3425 SOT23-6 Evaluation 
Board and demonstrate how to use it with the PICkit™ Serial Analyzer 
(P/N: DV164122).

The following topics are covered:

• Description of the MCP3425 SOT23-6 Evaluation Board

• Using MCP3425 SOT23-6 Evaluation Board with the PICkit Serial Analyzer to 

evaluate the MCP3425 device.

The MCP3425 SOT23-6 Evaluation Board (P/N MCP3425EV) contains a MCP3425 
16-bit Delta-Sigma Analog-to-Digital Converter (ADC). The MCP3425 is an 16-bit 
single channel ADC device with various options. The MCP3425 SOT23-6 Evaluation 
Board has analog input connection pads and V

DD

, SDA, and SCL test pads. The user 

can connect any sensor input signal to this evaluation board and test the ADC 
conversion results. The PICkit Serial Analyzer’s PC graphic user interface (GUI) 
provides the user’s interface for configuration register bits of the MCP3425 and 
displays the ADC conversion values. The PICkit Serial Analyzer links between the GUI 
and the MCP3425 SOT23-6 Evaluation Board and provides the I

2

C communication to 

the MCP3425 SOT23-6 Evaluation Board. The user also can use this MCP3425 
SOT23-6 Evaluation Board without the PICkit Serial Analyzer by providing the I

2

C 

communication signal to the SDA and SCL test pads on the board.

This evaluation board has the following interfaces:

• PICkit Serial Analyzer (P/N: DV164122) for writing configuration register bits and 

reading the conversion data.

The user can monitor the I

2

C

 

communications by connecting an oscilloscope to the 

SDA and SCL test pads. Refer to Appendix A. “Schematic and Layouts”.

The user can use this board without the PICkit Serial Analyzer as long as 
the V

DD

, SCL, and SDA are provided to the board. This evaluation board 

does not include MCU.