ADM00310 Microchip Technology, ADM00310 Datasheet - Page 17

• Manufacturer Part Number: ADM00310
• Description: BOARD EVAL FOR MCP3903 AFE
• Manufacturer: Microchip Technology
• Series: -r

Specifications of ADM00310

• Design Resources: MCP3903 Eval Brd BOM MCP3903 Eval Brd Schematic
• Main Purpose: Interface, Analog Front End (AFE)
• Embedded: Yes, MCU, 16-Bit
• Utilized Ic / Part: MCP3903, PIC24F, PIC24H, dsPIC33, MCP2200
• Primary Attributes: -
• Secondary Attributes: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

© 2011 Microchip Technology Inc.
FIGURE 2-2:
Connectivity is done through the serial port. First, the user must identify the com port
number from My computer > Manage > Device Manager. After this, in “VISA resource
names”, users must find and select the correct com port number. Only after this, can
the START button be pressed to begin the data acquisition.
FIGURE 2-3:
From the Edit menu, the user can open the Registers and Settings window to control
the internal registers of the MCP3903, the sampling speed of the ADC or if any
averaging should be done on the acquired samples.
From the buffer length, the user can select the amount of data that will be processed.
The maximum length is 512. From the Sampling Speed Control, the user can change
the sampling speed of the ADC. By writing a lower value, the sampling speed is
increased, and for higher values it is decreased. The accurate value of the sampling
speed is indicated in the Sampling speed indicator.
If the user wants to investigate the effect of averaging on the performance indicator, the
desired value can be written in the “Averages” control. It must be noted that the
processed buffer will decrease by a factor equal to the value of the average.
The Write Register and Read Register tabs are used to set the internal registers of
the MCP3903. With the Write Register tab they are written and with the Read
Register tab, the user can check the settings of the registers.
MCP3903 Data View Software - Main Screen.
MCP3903 Data View Software - Registers and Settings Screen.
Code Example
DS51994A-page 13