Datasheet
Table Of Contents
- Package Types
- Typical Application
- 1.0 Electrical Characteristics
- 2.0 Typical Performance Curves
- Figure 2-1: Input Offset Voltage
- Figure 2-2: Input Offset Voltage Drift
- Figure 2-3: Input Offset Voltage vs. Common Mode Input Voltage
- Figure 2-4: Input Offset Voltage vs. Common Mode Input Voltage
- Figure 2-5: Input Offset Voltage vs. Output Voltage
- Figure 2-6: Input Offset Voltage vs. Power Supply Voltage
- FIGURE 2-7: Input Noise Voltage Density vs. Frequency.
- FIGURE 2-8: Input Noise Voltage Density vs. Common Mode Input Voltage.
- FIGURE 2-9: CMRR, PSRR vs. Frequency.
- FIGURE 2-10: CMRR, PSRR vs. Ambient Temperature.
- FIGURE 2-11: Input Bias, Offset Currents vs. Ambient Temperature.
- FIGURE 2-12: Input Bias Current vs. Common Mode Input Voltage.
- FIGURE 2-13: Quiescent Current vs. Ambient Temperature.
- FIGURE 2-14: Quiescent Current vs. Common Mode Input Voltage.
- FIGURE 2-15: Quiescent Current vs. Common Mode Input Voltage.
- FIGURE 2-16: Quiescent Current vs. Power Supply Voltage.
- FIGURE 2-17: Open-Loop Gain, Phase vs. Frequency.
- FIGURE 2-18: DC Open-Loop Gain vs. Ambient Temperature.
- FIGURE 2-19: Gain Bandwidth Product, Phase Margin vs. Ambient Temperature.
- FIGURE 2-20: Gain Bandwidth Product, Phase Margin vs. Ambient Temperature.
- FIGURE 2-21: Output Short Circuit Current vs. Power Supply Voltage.
- FIGURE 2-22: Output Voltage Swing vs. Frequency.
- FIGURE 2-23: Output Voltage Headroom vs. Output Current.
- FIGURE 2-24: Output Voltage Headroom vs. Output Current.
- FIGURE 2-25: Output Voltage Headroom vs. Ambient Temperature.
- FIGURE 2-26: Output Voltage Headroom vs. Ambient Temperature.
- FIGURE 2-27: Slew Rate vs. Ambient Temperature.
- FIGURE 2-28: Small Signal Non-Inverting Pulse Response.
- FIGURE 2-29: Small Signal Inverting Pulse Response.
- FIGURE 2-30: Large Signal Non-Inverting Pulse Response.
- FIGURE 2-31: Large Signal Inverting Pulse Response.
- FIGURE 2-32: The MCP6491/2/4 Shows No Phase Reversal.
- FIGURE 2-33: Closed Loop Output Impedance vs. Frequency.
- FIGURE 2-34: Measured Input Current vs. Input Voltage (below VSS).
- FIGURE 2-35: Channel-to-Channel Separation vs. Frequency (MCP6492/4 only).
- 3.0 Pin Descriptions
- 4.0 Application Information
- 5.0 Design Aids
- 6.0 Packaging Information
- Appendix A: Revision History
- Product Identification System
- Trademarks
- Worldwide Sales and Service
MCP6491/2/4
DS20002321C-page 8 2012-2013 Microchip Technology Inc.
Note: Unless otherwise indicated, T
A
=+25°C, V
DD
= +2.4V to +5.5V, V
SS
= GND, V
CM
=V
DD
/2, V
OUT
V
DD
/2,
V
L
=V
DD
/2, R
L
=10kto V
L
and C
L
=20pF.
FIGURE 2-7: Input Noise Voltage Density
vs. Frequency.
FIGURE 2-8: Input Noise Voltage Density
vs. Common Mode Input Voltage.
FIGURE 2-9: CMRR, PSRR vs.
Frequency.
FIGURE 2-10: CMRR, PSRR vs. Ambient
Temperature.
FIGURE 2-11: Input Bias, Offset Currents
vs. Ambient Temperature.
FIGURE 2-12: Input Bias Current vs.
Common Mode Input Voltage.
100
1,000
N
oise Voltage Density
(nV/¥Hz)
10
1.E-1 1.E+0 1.E+1 1.E+2 1.E+3 1.E+4 1.E+5 1.E+6
Input
N
Frequency (Hz)
0.1 1 10 100 1k 10k 100k 1M
10
15
20
25
30
Voltage Noise Density
(nV/¥Hz)
f = 10 kHz
V
=55V
0
5
-0.5
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Input
Common Mode Input Voltage (V)
V
DD
=
5
.
5
V
50
60
70
80
90
100
M
RR, PSRR (dB)
Representative Part
CMRR
PSRR+
PSRR-
20
30
40
1.00E+01 1.00E+02 1.00E+03 1.00E+04 1.00E+05 1.00E+06
C
M
Frequency (Hz)
10 100 1k 10k 100k 1M
80
85
90
95
100
105
MRR, PSRR (dB)
PSRR
CMRR @ V
DD
= 5.5V
65
70
75
-50 -25 0 25 50 75 100 125
C
Temperature (°C)
@
V
DD
= 2.4
V
1
10
100
1000
a
nd Offset Currents
(A)
Input Bias Current
V
DD
= 5.5 V
1n
100p
10p
1p
0.01
0.1
25
35
45
55
65
75
85
95
105
115
125
Input Bias
a
Ambient Temperature (°C)
Input Offset Current
0.1p
0.01p
50
100
150
200
250
u
t Bias Current (pA)
T
A
= +125°C
T
=+85
°
C
V
DD
= 5.5 V
-50
0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
Inp
u
Common Mode Input Voltage (V)
T
A
= +85
C
T
A
= +25°C