MCP6062 MICROCHIP [Microchip Technology], MCP6062 Datasheet - Page 18

• Manufacturer Part Number: MCP6062
• Description: 60 ?A, High Precision Op Amps
• Manufacturer: MICROCHIP [Microchip Technology]

MCP6061/2/4
4.7
4.7.1
The MCP6061/2/4 op amps can be used in gyrator
applicaitons. The gyrator is an electric circuit which can
make a capacitive circuit behave inductively.
7
inductance, with an approximately equivalent circuit
below. The two Z
applications. The primary application for a gyrator is to
reduce the size and cost of a system by removing the
need for bulky, heavy and expensive inductors. For
example, RLC bandpass filter characteristics can be
realized with capacitors, resistors and operational
amplifiers without using inductors. Moreover, gyrators
will typically have higher accuracy than real inductors,
due to the lower cost of precision capacitors than
inductors.
.
FIGURE 4-7:
DS22189A-page 18
Z
shows an example of a gyrator simulating
Z
IN
Z
IN
IN
L
=
=
Application Circuits
R
R
GYRATOR
L
L
RC
+
j
ω
R
L
R
IN
L
C
L
have similar values in typical
Gyrator.
R
L
MCP6061
Equivalent Circuit
Gyrator
Figure 4-
V
OUT
4.7.2
The MCP6061/2/4 op amps are well suited for
conditioning sensor signals in battery-powered applica-
tions.
amplifier, using the MCP6062, that works well for
applications requiring rejection of common mode noise
at higher gains. The reference voltage (V
supplied by a low impedance source. In single supply
applications, V
FIGURE 4-8:
Instrumentation Amplifier.
To obtain the best CMRR possible, and not limit the
performance by the resistor tolerances, set a high gain
with the R
4.7.3
Use high gain before a comparator to improve the
latter’s input offset performance.
gain of 11 V/V placed before a comparator. The
reference voltage V
supply rails.
FIGURE 4-9:
Comparator.
V
V
IN
V
V
REF
2
1
Figure 4-8
V
OUT
R
100 kΩ
G
1
MCP6061
INSTRUMENTATION AMPLIFIER
PRECISION COMPARATOR
resistor.
=
REF
(
V
shows a two op amp instrumentation
1 MΩ
1
MCP6062
is typically V
R
V
REF
–
2
REF
V
½
Two Op Amp
Precision, Non-inverting
2
R
© 2009 Microchip Technology Inc.
) 1
can be any value between the
⎛
⎝
G
+
R
MCP6541
R
----- -
R
2
1
2
DD
+
/2.
Figure 4-9
2R
-------- -
R
G
1
⎞
⎠
R
MCP6062
+
1
V
½
REF
shows a
V
V
REF
OUT
OUT
) is