MCP6V01RD-TCPL Microchip Technology, MCP6V01RD-TCPL Datasheet - Page 12

• 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
DS51738B- page 8
1.3.2
• Difference Amplifier
• Buffer Amplifier
• 2nd Order RC Low-Pass Filter
Figure 1-3 shows the analog sensing circuit diagram of MCP6V01 Thermocouple
Auto-Zeroed Reference Design.
FIGURE 1-3:
Auto-Zeroed Reference Design.
CV
CV
- Uses a MCP6V01 auto-zeroed op amp (U5)
- Two 0.1% tolerance gain resistors (R8 and R11)
- Two 0.1% tolerance input resistors for shifting V
- Two 0.1% tolerance input resistors for the thermocouple output (R6 and R7)
- Uses a MCP6001 standard op amp (U4)
- Outputs V
- Sends V
- Fast enough to quick changes in temperature
- Double pole for anti-aliasing and removing high-frequency noise
- No DC offset and simple architecture
REF
REF
accurate
Buffer Amplifier
Buffer Amplifier
Analog Sensing Circuit Diagram Description
SHIFT
MCP6001
MCP6001
SHIFT
U4
U4
back to PIC’s internal ADC to make calculated result more
which shifts V
Analog Sensing Circuit Diagram of the MCP6V01 Thermocouple
V
V
V
V
IN+
IN+
IN-
IN-
V
V
SHIFT
SHIFT
R9
R9
R6
R6
R9
R9
R7
R7
OUT1
5.6k
5.6k
100O
100O
100O
100O
5.6k
5.6k
Difference Amplifier
Difference Amplifier
by 16 different values
MCP6V01
MCP6V01
R8
R8
V
V
DD
DD
100k
100k
R8
R8
U5
U5
100k
100k
0.1 µF
0.1 µF
V
V
REF
REF
= 4.1V
= 4.1V
OUT1
V
V
OUT1
OUT1
(R9 and R10)
© 2008 Microchip Technology Inc.
499O
499O
R12
R12
0.1 µF
0.1 µF
C6
C6
2
2
Low-Pass Filter
Low-Pass Filter
nd
nd
Order RC
Order RC
R13
R13
499O
499O
0.1 µF
0.1 µF
C7
C7
V
V
OUT2
OUT2