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© 2009 Microchip Technology Inc. DS21881E-page 1
MCP6231/1R/1U/2/4
Features
• Gain Bandwidth Product: 300 kHz (typical)
• Supply Current: I
Q
= 20 µA (typical)
• Supply Voltage: 1.8V to 6.0V
• Rail-to-Rail Input/Output
• Extended Temperature Range: -40°C to +125°C
• Available in 5-Pin SC70 and SOT-23 packages
Applications
• Automotive
• Portable Equipment
• Transimpedance amplifiers
• Analog Filters
• Notebooks and PDAs
• Battery-Powered Systems
Design Aids
• SPICE Macro Models
• FilterLab
®
Software
• Mindi™ Circuit Designer & Simulator
• Microchip Advanced Part Selector (MAPS)
• Analog Demonstration and Evaluation Boards
• Application Notes
Typical Application
Description
The Microchip Technology Inc. MCP6231/1R/1U/2/4
operational amplifiers (op amps) provide wide
bandwidth for the quiescent current. The MCP6231/1R/
1U/2/4 family has a 300 kHz gain bandwidth product
and 65°C (typical) phase margin. This family operates
from a single supply voltage as low as 1.8V, while
drawing 20 µA (typical) quiescent current. In addition,
the MCP6231/1R/1U/2/4 family supports rail-to-rail
input and output swing, with a common mode input
voltage range of V
DD
+300mV to V
SS
–300mV.
These op amps are designed in one of Microchip’s
advanced CMOS processes.
Package Types
MCP6231
V
OUT
V
IN2
–
+
V
IN1
R
G2
R
G1
R
F
R
Z
V
DD
R
X
R
Y
Summing Amplifier Circuit
4
MCP6231
1
2
3
–
+
5
V
DD
V
IN
–
V
OUT
V
SS
V
IN
+
SOT-23-5
4
1
2
3
+
5
V
DD
V
OUT
V
SS
MCP6231R
SOT-23-5
4
1
2
3
–
+
5
V
SS
V
IN
–
V
OUT
V
DD
V
IN
+
MCP6231U
SC70-5, SOT-23-5
4
1
2
3
–
+
5
V
DD
V
OUT
V
IN
+
V
SS
V
IN
–
V
IN
+
V
IN
–
MCP6231
V
SS
V
DD
V
OUT
1
2
3
4
8
7
6
5
–
+
NC
NC
NC
MSOP, PDIP, SOIC
MCP6232
MSOP, PDIP, SOIC
1
2
3
4
8
7
6
5
-
+
-
+
V
INA
_
V
INA
+
V
SS
V
OUTA
V
OUTB
V
DD
V
INB
_
V
INB
+
MCP6234
V
INA
+
V
INA
–
V
SS
1
2
3
4
14
13
12
11
-
V
OUTA
+
-
+
V
DD
V
OUTD
V
IND
–
V
IND
+
10
9
8
5
6
7
V
OUTB
V
INB
–
V
INB
+
V
INC
+
V
INC
–
V
OUTC
+
-
-
+
PDIP, SOIC, TSSOP
MCP6231
DFN *
MCP6232
V
INA
+
V
INA
_
V
SS
V
OUTB
V
INB
_
1
2
3
4
8
7
6
5
V
INB
+
V
OUTA
EP
9
V
DD
V
IN
+
V
IN
–
V
SS
V
DD
V
OUT
1
2
3
4
8
7
6
5
NC
NC
EP
9
NC
* Includes Exposed Thermal Pad (EP); see Table 3-1.
2x3 TDFN *
20 µA, 300 kHz Rail-to-Rail Op Amp

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