MCP618-I/P Microchip Technology, MCP618-I/P Datasheet - Page 12

• Manufacturer Part Number: MCP618-I/P
• Description: IC OPAMP 2.3V R-R W/CS 8DIP
• Manufacturer: Microchip Technology

Specifications of MCP618-I/P

• Slew Rate: 0.08 V/µs
• Operating Temperature: -40°C ~ 85°C
• Amplifier Type: General Purpose
• Number Of Circuits: 1
• Output Type: Rail-to-Rail
• Gain Bandwidth Product: 190kHz
• Current - Input Bias: 15nA
• Voltage - Input Offset: 150µV
• Current - Supply: 19µA
• Current - Output / Channel: 17mA
• Voltage - Supply, Single/dual (±): 2.3 V ~ 5.5 V
• Mounting Type: Through Hole
• Package / Case: 8-DIP (0.300", 7.62mm)
• Op Amp Type: General Purpose
• No. Of Amplifiers: 1
• Bandwidth: 190kHz
• Supply Voltage Range: 2.3V To 5.5V
• Amplifier Case Style: DIP
• No. Of Pins: 8
• Number Of Channels: 1
• Voltage Gain Db: 120 dB
• Common Mode Rejection Ratio (min): 80 dB
• Input Offset Voltage: 0.15 mV
• Operating Supply Voltage: 3 V, 5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• -3db Bandwidth: -
• Lead Free Status / Rohs Status: Details

MCP616/7/8/9
4.0
The MCP616/7/8/9 family of op amps is manufactured
using Microchip’s state-of-the-art CMOS process,
which includes PNP transistors. These op amps are
unity-gain stable and suitable for a wide range of
general purpose applications.
4.1
The MCP616/7/8/9 op amps are designed to prevent
phase reversal when the input pins exceed the supply
voltages.
exceeding the supply voltage without any phase rever-
sal.
The inputs of the MCP616/7/8/9 op amps connect to a
differential PNP input stage. The Common Mode Input
Voltage Range (V
supply systems (V
means that the amplifier input behaves linearly as long
as the Common Mode Input Voltage (V
within the specified limits (V
Input voltages that exceed the Absolute Maximum
Voltage Range (V
excessive current to flow into or out of the input pins.
Current beyond ±2 mA can cause reliability problems.
Applications that exceed this rating must be externally
limited with a resistor, as shown in Figure 4-1.
FIGURE 4-1:
Resistor (R
DS21613B-page 12
V
IN
APPLICATIONS INFORMATION
Inputs
R
R
IN
IN
Figure 2-33
IN
).
------------------------------------------------------------------------------
R
V
-------------------------------------------------------------------------- -
Maximum expected V
IN
SS
SS
SS
CMR
–
), but does not include V
– 0.3V to V
Minimum expected V
Input Current-Limiting
) includes ground in single-
MCP61X
shows
SS
2 mA
2 mA
to V
DD
DD
the
IN
+ 0.3V) can cause
– 0.9V at +25°C).
–
input
V
IN
DD
V
CM
OUT
) is kept
DD
voltage
. This
4.2
The MCP616/7/8/9 family of op amps have a PNP input
differential pair that gives good DC performance. They
have very low input offset voltage (±150 µV, max.) at
T
(sourced out of the inputs).
There must be a DC path to ground (or power supply)
from both inputs, or the op amp will not bias properly.
The DC resistances seen by the op amp inputs (R
and R
than 100 k , to minimize the total DC offset.
FIGURE 4-2:
Calculating DC Offset.
To calculate the DC bias point and DC offset, convert
the circuit to its DC equivalent:
• Replace capacitors with open circuits
• Replace inductors with short circuits
• Replace AC voltage sources with short circuits
• Replace AC current sources with open circuits
• Convert DC sources and resistances into their
The DC equivalent circuit for Figure 4-2 is shown in
Figure 4-3.
FIGURE 4-3:
A
Thevenin equivalent form
= +25°C, with a typical bias current of -15 nA
V
V
V
4
EQ
V
1
2
||R
1
DC Offsets
5
in Figure 4-2) need to be equal and less
R
3
R
R
R
V
R
R
EQ
1
4
EQ
EQ
1
C
3
=
=
Example Circuit for
Equivalent DC Circuit.
V
R
© 2005 Microchip Technology Inc.
2
4
MCP61X
R
MCP61X
|| R
------------------
R
5
4
R
R
+
5
R
5
2
R
2
5
V
V
OUT
OUT
1
||R
2