MCP3422EV Microchip Technology, MCP3422EV Datasheet - Page 22

• Manufacturer Part Number: MCP3422EV
• Description: BOARD EVAL MCP3422 PICKIT SERIAL
• Manufacturer: Microchip Technology
• Series: PICkit™r

Specifications of MCP3422EV

• Number Of Adc's: 2
• Number Of Bits: 18
• Sampling Rate (per Second): 3.75
• Data Interface: Serial
• Inputs Per Adc: 1 Differential
• Input Range: ±2.048 V
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 125°C
• Utilized Ic / Part: MCP3422
• Silicon Manufacturer: Microchip
• Application Sub Type: ADC
• Kit Application Type: Data Converter
• Silicon Core Number: MCP3422
• Kit Contents: Board, Software
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

MCP3422 Evaluation Board for PICkit™ Serial User’s Guide
FIGURE 1-14:
reading indicates the measured value is 0.996 Volts.
DS51781A-page 18
Note that if the differential input voltage is negative (CH- > CH+), the MSB of the first byte will be "1". In this case, the
voltage is calculated after converting the output code to 2's complement and then multiply the LSB.
See Section 4.9 of the MCP3422 Data Sheet (DS22088) for more information.
1st byte: Data Byte
Results:
Output code:
Output Voltage=
Reading Conversion Results. Note that the Input = 0.996V is applied at Ch.1. The
2nd byte: Data Byte
3rd byte: Data Byte
4th byte: Configuration Byte (note that RDYbit is “0”)
Address Byte
Requesting
5 Bytes
5th Byte: Repeated Byte for Configuration byte
F907 in hex ( = 63751 in decimal)
63751
×
15.625 μV LSB
------------------------------------------- -
using a Read Command
PGA
(
Reading Data
)
=
0.996 Volts with PGA
=
© 2008 Microchip Technology Inc.
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