MCP6232-E/MS Microchip Technology, MCP6232-E/MS Datasheet - Page 14

• Manufacturer Part Number: MCP6232-E/MS
• Description: IC OPAMP 1.8V DUAL R-R 8MSOP
• Manufacturer: Microchip Technology

Specifications of MCP6232-E/MS

• Slew Rate: 0.15 V/µs
• Amplifier Type: General Purpose
• Number Of Circuits: 2
• Output Type: Rail-to-Rail
• Gain Bandwidth Product: 300kHz
• Current - Input Bias: 1pA
• Voltage - Input Offset: 5000µV
• Current - Supply: 20µA
• Current - Output / Channel: 23mA
• Voltage - Supply, Single/dual (±): 1.8 V ~ 6 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Op Amp Type: Rail To Rail
• No. Of Amplifiers: 2
• Bandwidth: 300kHz
• Supply Voltage Range: 1.8V To 6V
• Amplifier Case Style: MSOP
• No. Of Pins: 8
• Number Of Channels: 2
• Voltage Gain Db: 110 dB
• Common Mode Rejection Ratio (min): 61 dB
• Input Offset Voltage: 5 mV
• Operating Supply Voltage: 3 V, 5 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• -3db Bandwidth: -
• Lead Free Status / Rohs Status: Details

MCP6231/1R/1U/2/4
To minimize output offset voltage and increase circuit
accuracy, the resistor values need to meet the
conditions:
EQUATION 4-3:
4.7.2
In analog circuit design, the PCB parasitic capacitance
can compromise the circuit behavior;
a typical scenario. If the input of an amplifier sees
parasitic capacitance of several picofarad (C
which includes the common mode capacitance of 6 pF,
typical), and large R
of the circuit will include a zero. This parasitic zero
introduces gain-peaking and can cause circuit
instability.
FIGURE 4-9:
Capacitance at the Input.
One solution is to use smaller resistor values to push
the zero to a higher frequency. Another solution is to
compensate by introducing a pole at the point at which
the zero occurs. This can be done by adding C
parallel with the feedback resistor (R
selected so that the ratio C
of R
DS21881E-page 14
V
V
F
AC
DC
:R
G
.
COMPENSATING FOR THE
PARASITIC CAPACITANCE
C
R
PARA
G
R
F
VIN +
and R
Effect of Parasitic
MCP623X
+
–
=
PARA
R
C
G
R
F
F
, the frequency response
VIN
:C
C
F
–
F
is equal to the ratio
=
F
Figure 4-9
). C
C
PARA
F
V
needs to be
OUT
•
R
------ -
R
shows
G
F
PARA
F
in
,
© 2009 Microchip Technology Inc.