MCP6285T-E/MS Microchip Technology, MCP6285T-E/MS Datasheet - Page 12

• Manufacturer Part Number: MCP6285T-E/MS
• Description: IC OPAMP 2.2V DUAL W/CS 8MSOP
• Manufacturer: Microchip Technology

Specifications of MCP6285T-E/MS

• Amplifier Type: General Purpose
• Number Of Circuits: 2
• Output Type: Rail-to-Rail
• Slew Rate: 2.5 V/µs
• Gain Bandwidth Product: 5MHz
• Current - Input Bias: 1pA
• Voltage - Input Offset: 3000µV
• Current - Supply: 450µA
• Current - Output / Channel: 25mA
• Voltage - Supply, Single/dual (±): 2.2 V ~ 6 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• -3db Bandwidth: -

MCP6281/1R/2/3/4/5
4.0
The MCP6281/1R/2/3/4/5 family of op amps is manu-
factured using Microchip's state-of-the-art CMOS
process. This family is specifically designed for low-
cost, low-power and general purpose applications.
The low supply voltage, low quiescent current and
wide bandwidth makes the MCP6281/1R/2/3/4/5 ideal
for battery-powered applications.
4.1
4.1.1
The MCP6281/1R/2/3/4/5 op amp is designed to
prevent phase reversal when the input pins exceed the
supply voltages.
exceeding the supply voltage without any phase
reversal.
4.1.2
The ESD protection on the inputs can be depicted as
shown in
protect the input transistors, and to minimize input bias
current (I
when they try to go more than one diode drop below
V
above V
allow normal operation, and low enough to bypass
quick ESD events within the specified limits.
FIGURE 4-1:
Structures.
In order to prevent damage and/or improper operation
of these op amps, the circuit they are in must limit the
currents and voltages at the V
Absolute Maximum Ratings † at the beginning of
Section 1.0 “Electrical Characteristics”).
shows the recommended approach to protecting these
inputs. The internal ESD diodes prevent the input pins
(V
the resistors R
out of the input pins. Diodes D
input pins (V
DS21811E-page 12
SS
IN
. They also clamp any voltages that go too far
+ and V
V
V
V
IN
DD
SS
+
DD
APPLICATION INFORMATION
Rail-to-Rail Inputs
B
). The input ESD diodes clamp the inputs
Figure
; their breakdown voltage is high enough to
Bond
Bond
Bond
PHASE REVERSAL
INPUT VOLTAGE AND CURRENT
LIMITS
Pad
Pad
Pad
IN
IN
–) from going too far below ground, and
1
+ and V
and R
Figure 2-32
4-1. This structure was chosen to
2
Simplified Analog Input ESD
limit the possible current drawn
IN
Stage
Input
–) from going too far above
shows the input voltage
IN
1
+ and V
and D
Bond
Pad
2
IN
prevent the
– pins (see
Figure 4-2
V
IN
–
V
implemented as shown, resistors R
the current through D
FIGURE 4-2:
Inputs.
It is also possible to connect the diodes to the left of
resistors R
diodes D
mechanism. The resistors then serve as in-rush current
limiters; the DC current into the input pins (V
V
A significant amount of current can flow out of the
inputs when the common mode voltage (V
ground (V
high impedance may need to limit the usable voltage
range.
4.1.3
The input stage of the MCP6281/1R/2/3/4/5 op amps
use two differential CMOS input stages in parallel. One
operates at low common mode input voltage (V
while the other operates at high V
topology, the device operates with V
above V
There is a transition in input behavior as V
changed. It occurs when V
Figure 2-3
performance with non-inverting gains, avoid these
regions of operation.
DD
IN
–) should be very small.
, and dump any currents onto V
V
V
1
2
DD
1
R
R
SS
1
2
1
and D
and 0.3V below V
NORMAL OPERATION
and
>
>
); see
and R
R
R
V
V
D
1
2
SS
SS
Figure
2
1
2
needs to be limited by some other
– (minimum expected V
– (minimum expected V
Figure
. In this case, current through the
1
D
Protecting the Analog
and D
2
© 2008 Microchip Technology Inc.
2-6). For the best distortion
2-31. Applications that are
CM
2 mA
2 mA
2
SS
.
MCP628X
is near V
.
V
R
1
DD
3
and R
CM
CM
DD
CM
. WIth this
– 1.2V (see
up to 0.3V
1
2
DD
2
)
)
) is below
also limit
. When
IN
+ and
CM
CM
is
),