MCP6144 Microchip Technology, MCP6144 Datasheet - Page 14

• Manufacturer Part Number: MCP6144
• Description: The MCP6144 is a quad 600nA op amp offering rail to rail input & output over the 1.4 to 5.5V operating range. This amplifier ...
• Manufacturer: Microchip Technology

MCP6141/2/3/4
In this configuration, the amplifier outputs the sum of
the three input voltages. The ratio of the sum and the
output voltage is defined using the feedback and input
resistors. V
family of amplifiers is stable for noise gain (G
V or higher. The G
amplifier is calculated as shown below:
EQUATION
At a noise gain of 10 V/V, the amplifier bandwidth is
approximately 10 kHz. The bandwidth to quiescent cur-
rent ratio of MCP6141/2/3/4 makes this device an
appropriate choice for battery-powered applications.
21668A-page 14
V
V OUT
Noise Gain:
Signal Gain:
OUT
=
=
R
G
V
V
V
V
V
F
01
REF
n
01
02
03
04
V
---------------------- -
=
+
REF
=
=
=
=
V
is used to offset the output voltage. This
1
R
02
–
---------
–
---------
–
---------
+
1
R
R
R
1
n
–
R
R
R
+
R
1
2
3
and the signal gain of the summing
F
F
F
+
V
F
V
1
R
------
R
03
+
----- -
R
F
V
V
V
1
1
1
V
---------------------- -
+
1
2
3
+
REF
+
V
R
------
R
----- -
R
04
R
F
2
1
2
2
–
+
+
V
R
------
R
----- -
R
2
1
F
3
3
+
V
---------------------- -
REF
V
10 V/V
REF
R
3
–
V
3
n
) of 10 V/
+
V
REF
2002 Microchip Technology Inc.