User manual

MCP3423 EVALUATION BOARD

USER’S GUIDE

Chapter 1. Quick Start Instructions

1.1 INTRODUCTION

The following sections provide an overview of the MCP3423 Evaluation Board and

demonstrate how to use it with the PICkit™ Serial Analyzer (P/N: DV164122).

The following topics are covered:

• Description of the MCP3423 Evaluation Board

• How to use MCP3423 Evaluation Board with the PICkit Serial Analyzer

1.2 DESCRIPTION OF THE MCP3423 EVALUATION BOARD

The MCP3423 Evaluation Board (P/N MCP3423EV) contains a MCP3423 18-Bit ΔΣ

Analog-to-Digital Converter (ADC). The MCP3423 is a 2-channel 18 bit delta-sigma

ADC device with various configuration options. The board has analog input connection

pads and various test pads.

The user can connect inputs and test the conversion results using the PICkit Serial

Analyzer and its PC graphic user interface (GUI). The MCP3423 Evaluation Board has

the following interfaces:

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

reading the conversion data.

The board has test points for SDL, SDA, and analog inputs. By connecting an

oscilloscope to these test points, the user can examine the data communications

through the I

™

bus line and observe the resulting conversion output. Refer to

Appendix A. “Schematic and Layouts”.

1.2.1 I

C Address Bits and A0 Address Bit Selection

The I

C device code and address bits of the MCP3423 device are:

• Device Code: ‘1101’

• A2, A1, A0 Address Bits: determined by the JP2 (Adr1 pin) and JP3 (Adr0 pin).

• See Table 1-1 for the I

C Device Address bits and JP2 and JP3 connections.

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

the V

, SCL, and SDA are provided through J1 connector. This Evaluation

Board does not include MCU.