MCP616-I/ST Microchip Technology, MCP616-I/ST Datasheet - Page 16

• Manufacturer Part Number: MCP616-I/ST
• Description: IC SINGLE 2.7V PNP IN OP TSSOP8
• Manufacturer: Microchip Technology

Specifications of MCP616-I/ST

• Amplifier Type: General Purpose
• Number Of Circuits: 1
• Output Type: Rail-to-Rail
• Slew Rate: 0.08 V/µs
• 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
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-TSSOP
• Lead Free Status / RoHS Status: Request inventory verification / Request inventory verification
• -3db Bandwidth: -

MCP616/7/8/9
FIGURE 4-3:
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
FIGURE 4-4:
Now calculate the nominal DC bias point with offset:
DS21613C-page 16
Thevenin equivalent form
V
V
V
EQ
V
1
2
4-4.
1
R
3
R
R
R
V
R
R
EQ
1
4
EQ
EQ
1
C
3
=
=
Example Circuit for
Equivalent DC Circuit.
V
R
2
4
MCP61X
⋅
R
MCP61X
|| R
------------------
R
5
4
R
R
5
+
R
5
Figure 4-3
2
R
2
5
is shown in
V
V
OUT
OUT
EQUATION 4-1:
Use the worst-case specs and source values to
determine the worst-case
offset
input voltage range and output voltage range are not
exceeded.
4.3
There are two specifications that describe the output
swing capability of the MCP616/7/8/9 family of op
amps. The first specification (Maximum Output Voltage
Swing) defines the absolute maximum swing that can
be achieved under the specified load conditions. For
instance, the output voltage swings to within 15 mV of
the negative rail with a 25 kΩ load tied to V
Figure 2-33
when the input goes beyond the linear region of
operation.
The second specification that describes the output
swing capability of these amplifiers is the Linear Output
Voltage
maximum output swing that can be achieved while the
amplifier still operates in its linear region. To verify
linear operation in this range, the large-signal DC
Open-Loop Gain (A
supply rails. The measurement must meet the specified
A
OL
Where:
conditions in the specification table.
V
G
V
V
V
V
V
OOS
for your design. Make sure the common mode
OOS
CM
OUT
I
G
N
CM
OS
OS
I
Rail-to-Rail Output
N
B
=
Range.
= V
= G
= V
1
shows how the output voltage is limited
EQ
+
EQ
N
=
=
=
=
=
=
R
[V
– (I
2
(G
OS
⁄
OL
This
R
B
N
op amp’s noise gain (from the
non-inverting input to the
output)
circuit’s output offset voltage
op amp’s input offset voltage
op amp’s input bias current
op amp’s input offset current
op amp’s coommon mode
input voltage
1
+ I
) is measured at points inside the
+ I
) – V
– I
© 2008 Microchip Technology Inc.
B
OS
OS
output voltage range and
((R
1
specification
((R
/2) R
(G
1
N
1
||R
||R
EQ
– 1) + V
2
) – R
2
) + R
EQ
OOS
EQ
)
defines
) / 2]
DD
the
/2.