MCP6V01RD-TCPL Microchip Technology, MCP6V01RD-TCPL Datasheet - Page 10

• Manufacturer Part Number: MCP6V01RD-TCPL
• Description: REF DESIGN THERMCPL FOR MCP6V01
• Manufacturer: Microchip Technology

Specifications of MCP6V01RD-TCPL

• Channels Per Ic: 1 - Single
• Amplifier Type: Chopper (Zero-Drift)
• Output Type: Rail-to-Rail
• Slew Rate: 0.5 V/µs
• Current - Output / Channel: 22mA
• Operating Temperature: -40°C ~ 125°C
• Voltage - Supply, Single/dual (±): 1.8 V ~ 5.5 V
• Board Type: Fully Populated
• Utilized Ic / Part: MCP6V01
• Silicon Manufacturer: Microchip
• Silicon Core Number: MCP6V01
• Kit Application Type: Sensing - Temperature
• Application Sub Type: Temperature Sensor
• Processor To Be Evaluated: MCP6V01
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• -3db Bandwidth: -
• Current - Supply (main Ic): -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

MCP6V01 Thermocouple Auto-Zeroed Reference Design
1.3
DS51738B- page 6
MCP6V01 THERMOCOUPLE AUTO-ZEROED REFERENCE DESIGN
DESCRIPTION
1.3.1
The MCP6V01 Thermocouple Auto-Zeroed Reference Design demonstrates how to
measure electromotive force (EMF) voltage at the cold junction of the thermocouple in
order to accurately measure temperature at the hot junction. This can be done by using
the MCP6V01 auto-zeroed op amp because of its ultra low offset voltage (V
high common mode rejection ratio (CMRR).
• The difference amplifier is implemented using the MCP6V01 and 0.1% tolerance
• The MCP9800 senses temperature at the type K thermocouple’s connector. It
• The MCP1541 provides a V
• The CV
• The 2
• The Thermal Management Software on PC is used to perform data display to
resistors. It amplifies the EMF voltage at the cold junction of the thermocouple.
should be located as close as possible to the connector on the PCB. This
measurement is used to perform cold junction compensation for the thermocouple
measurement.
PIC18F2550 and sets the reference voltage for the difference amplifier.
a 16-tap resistor ladder network that provides a selectable reference voltage. The
MCP6001 buffer amplifier eliminates the voltage reference output impedance
problem and produces the voltage V
high frequency noise and aliasing at the ADC input. The ADC of PIC18F2550
completes the analog-to-digital conversion. The data will be transferred to the PC
using the USB interface.
show the real-time temperature and apply cold junction compensation and data
linearization to determine the actual temperature of the thermocouple’s hot
junction (weld bead).
nd
REF
order RC low-pass filter that is implemented in this circuit can remove the
Function Block Diagram Description
is the internal comparator voltage reference of PIC18F2550, which is
REF
(4.1V) to the internal 10-Bit ADC of the
SHIFT
.
© 2008 Microchip Technology Inc.
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