MCP6143-I/P Microchip Technology, MCP6143-I/P Datasheet - Page 19
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MCP6143-I/P
Manufacturer Part Number
MCP6143-I/P
Description
IC OPAMP 1.4V SNGL W/CS R-R 8DIP
Manufacturer
Microchip Technology
Datasheet
1.MCP6142-ESN.pdf
(38 pages)
Specifications of MCP6143-I/P
Amplifier Type
General Purpose
Number Of Circuits
1
Output Type
Rail-to-Rail
Slew Rate
0.003 V/µs
Gain Bandwidth Product
100kHz
Current - Input Bias
1pA
Voltage - Input Offset
3000µV
Current - Supply
0.6µA
Current - Output / Channel
20mA
Voltage - Supply, Single/dual (±)
1.4 V ~ 6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Through Hole
Package / Case
8-DIP (0.300", 7.62mm)
Number Of Channels
1
Voltage Gain Db
115 dB
Common Mode Rejection Ratio (min)
60 dB
Input Offset Voltage
3 mV
Operating Supply Voltage
3 V, 5 V
Supply Current
0.001 mA
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MCP6143-I/P
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
4.9
4.9.1
The MCP6141/2/3/4 op amps’ Common Mode Input
Range, which goes 0.3V beyond both supply rails,
supports their use in high side and low side battery
current sensing applications. The very low quiescent
current (0.6 µA, typical) help prolong battery life, and
the rail-to-rail output supports detection low currents.
Figure 4-10
circuit. The 1 kΩ resistor is sized to minimize power
losses. The battery current (I
resistor causes its top terminal to be more negative
than the bottom terminal. This keeps the common
mode input voltage of the op amp below V
within its allowed range. When no current is flowing, the
output will be at its Maximum Output Voltage Swing
(V
FIGURE 4-10:
Sensor.
© 2009 Microchip Technology Inc.
.
1.4V
6.0V
OH
to
), which is virtually at V
Application Circuits
V
OUT
I
BATTERY CURRENT SENSING
DD
shows a high side battery current sensor
100 kΩ
=
1 kΩ
V
DD
High Side Battery Current
–
(
1 kΩ
MCP6141
DD
.
) 11 V/V
1 MΩ
DD
(
) through the 1 kΩ
)I
DD
DD
, which is
V
V
DD
OUT
4.9.2
The MCP6141/2/3/4 op amp is well suited for the
inverting summing amplifier shown in
the resistors at the input (R
noise gain at least 10 V/V. The output voltage (V
a weighted sum of the inputs (V
shifted by the V
follow in
FIGURE 4-11:
EQUATION 4-3:
.
Noise Gain:
Signal Gains:
Output Signal:
V
V
V
1
2
3
G
G
G
G
V
Equation
OUT
N
1
2
3
V
INVERTING SUMMING AMPLIFIER
=
=
=
=
REF
R
R
R
–
–
–
=
1
R
R
R
MCP6141/2/3/4
REF
1
2
3
+
F
F
F
V
4-3.
R
1
⁄
⁄
⁄
G
R
R
R
F
input. The necessary calculations
1
2
3
⎛
⎝
1
----- -
R
Summing Amplifier.
+
1
MCP614X
1
V
+
2
----- -
R
G
R
1
1
2
2
F
, R
+
+
1
----- -
R
V
2
1
, V
3
, and R
3
⎞
⎠
G
DS21668D-page 19
2
≥
3
Figure 4-11
, and V
10 V/V
+
V
REF
3
V
) make the
OUT
3
G
), and is
N
OUT
when
) is