MCP651EV-VOS Microchip Technology, MCP651EV-VOS Datasheet - Page 27

• Manufacturer Part Number: MCP651EV-VOS
• Description: BOARD EVAL OP AMP MCP651
• Manufacturer: Microchip Technology
• Series: mCal Technologyr

Specifications of MCP651EV-VOS

• Channels Per Ic: 1 - Single
• Amplifier Type: General Purpose
• Output Type: Single-Ended, Rail-to-Rail
• Slew Rate: 30 V/µs
• Current - Output / Channel: 100mA
• Operating Temperature: -40°C ~ 125°C
• Current - Supply (main Ic): 6mA
• Voltage - Supply, Single/dual (±): 2.5 V ~ 5.5 V
• Board Type: Fully Populated
• Utilized Ic / Part: MCP651
• Processor To Be Evaluated: MCP651
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Operating Supply Voltage: 2.5 V to 5.5 V
• Tool Type: Evaluation Board
• Core Architecture: PIC
• Cpu Core: PIC
• Data Bus Width: 8 bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• -3db Bandwidth: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

4.3.9.3
Figure 4-12
fier circuit. Usually, we choose R
The guard traces (with ground vias at the ends) help
minimize the thermal gradients. The resistor layout
cancels the resistor thermal voltages, assuming the
temperature gradient is constant near the resistors:
EQUATION 4-3:
FIGURE 4-12:
for Single Difference Amplifier.
© 2008 Microchip Technology Inc.
Where:
Thermal voltages are approximately equal
Note:
V
G
V
M
P
DM
V
V
M
P
Changing the orientation of the resistors
will usually cause a significant decrease in
the cancellation of the thermal voltages.
shows the recommended difference ampli-
V
V
=
MCP6V01
Difference Amplifier Layout for
Thermo-junctions
OUT
OUT
R4
R2
R1
R3
R
V
R
≈ V
≈ V
R
3
OS
1
2
/R
U
REF
REF
is neglected
1
1
PCB Layout and Schematic
= R
+ (V
+ (V
4
R
R
/R
P
P
4
3
U1
2
– V
– V
, difference gain
1
= R
M
M
V
)G
)G
2
REF
DM
DM
V
and R
OUT
V
V
3
OUT
REF
= R
4
.
4.3.9.4
The dual op amp amplifiers shown in
Figure 4-17
greater than 1, and a common mode gain of 1 .They
can use the layout shown in
ting resistors (R
bined so that the thermal voltages can be canceled.
The guard traces (with ground vias at the ends) help
minimize the thermal gradients. The resistor layout
cancels the resistor thermal voltages, assuming the
temperature gradient is constant near the resistors:
EQUATION 4-4:
FIGURE 4-13:
for Dual Non-inverting Amplifier.
Where:
Thermal voltages are approximately equal
Note:
G
G
R3
R2
R1
DM
CM
V
V
IA
IB
=
=
Changing the orientation of the resistors
will usually cause a significant decrease in
the cancellation of the thermal voltages.
(V
(V
produce a non-inverting difference gain
Dual Non-inverting Amplifier Layout
for Thermo-junctions
½ MCP6V02
½ MCP6V02
OA
OA
1 + R
1, common mode gain
V
2
) between the two sides are not com-
OS
– V
+ V
V
MCP6V01/2/3
is neglected
3
OB
OA
OB
R
R
R
R
/R
V
PCB Layout and Schematic
1
1
2
2
IA
U1
) ≈ (V
)/2 ≈ (V
2
U
U
, differential mode gain
1
1
V
Figure
IA
IB
IA
– V
R
R
V
3
3
+ V
OB
IB
4-13. The gain set-
DS22058C-page 27
)G
IB
Figure 4-16
)/2
DM
V
V
OA
OB
R3
R2
R1
and