MIC862
Dual Ultra-Low Power Op Amp in SOT-23-8
Features
8-Pin SOT-23 Package
3 MHz Gain-Bandwidth Product
5 MHz, –3 dB Bandwidth
31 µA Supply Current
Rail-to-Rail Output
Ground Sensing at Input
(Common-Mode-to-GND)
• Drives Large Capacitive Loads
• Unity Gain Stable
•
•
•
•
•
•
General Description
The MIC862 is a dual low-power operational amplifier
in an SOT23-8 package. It is designed to operate in the
2V to 5V range, rail-to-rail output, with input
common-mode to ground. The MIC862 provides
3 MHz gain-bandwidth product while consuming only
31 µA supply current per channel.
With low supply voltage and 8-lead SOT-23 packaging,
MIC862 provides two channels as general-purpose
amplifiers
for
portable
and
battery-powered
applications. Its package provides the maximum
performance available while maintaining an extremely
slim form factor. The minimal power consumption of
this IC maximizes the battery life potential.
Applications
•
•
•
•
•
•
Portable Equipment
Medical Instruments
PDAs
Pagers
Cordless Phones
Consumer Electronics
Package Type
MIC862
8-Pin SOT-23 (M8)
OUTA
1
8 V+
7 OUTB
6 INB–
5 INB+
INA– 2
INA+ 3
V– 4
2017 Microchip Technology Inc.
DS20005836A-page 1
MIC862
Typical Application Schematic
P
EAK
D
ETECTOR
C
IRCUIT FOR
AM R
ADIO
V+
10μF
0.1μF
1
/ MIC862
2
1
/ MIC862
2
V
OUT
RF
100pF
DS20005836A-page 2
2017 Microchip Technology Inc.
MIC862
1.0
ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings †
Supply Voltage (V
V+
to V
V–
).....................................................................................................................................+6.0V
Differential Input Voltage (V
IN+
to V
IN–
) (Note
1)......................................................................................................+6.0V
Input Voltage (V
IN+
to V
IN–
) ...........................................................................................................V
V+
+ 0.3V, V
V–
– 0.3V
Output Short-Circuit Current Duration.................................................................................................................Indefinite
ESD Rating (Note
2)
.................................................................................................................................. ESD Sensitive
Operating Ratings ‡
Supply Voltage (V+ to V-)........................................................................................................................ +2.0V to +5.25V
† Notice:
Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device.
This is a stress rating only and functional operation of the device at those or any other conditions above those indicated
in the operational sections of this specification is not intended. Exposure to maximum rating conditions for extended
periods may affect device reliability.
‡ Notice:
The device is not guaranteed to function outside the operating ratings.
Note 1:
Exceeding the maximum differential input voltage will damage the input stage and degrade performance (in
particular, input bias current is likely to increase).
2:
Devices are ESD sensitive. Handling precautions are recommended. Human body model, 1.5 kΩ in series
with 100 pF.
2017 Microchip Technology Inc.
DS20005836A-page 3
MIC862
TABLE 1-1:
ELECTRICAL CHARACTERISTICS
Electrical Characteristics:
V+ = +2V, V– = 0V, V
CM
= V+/2; R
L
= 500 kΩ to V+/2; –40°C
≤
T
A
≤
+85°C unless
otherwise noted.
Parameters
Input Offset Voltage
Differential Offset
Voltage
Input Offset Voltage
Temperature
Coefficient
Input Bias Current
Input Offset Current
Input Voltage
Range (from V–)
Common-Mode
Rejection Ratio
Power Supply
Rejection Ratio
Large-Signal
Voltage Gain
I
B
I
OS
V
CM
CMRR
PSRR
V
OS
Symbol
Min.
–6
–5
—
—
—
—
0.5
45
50
66
A
VOL
75
85
Maximum Output
Voltage Swing
V
OUT
Minimum Output
Voltage Swing
Gain-Bandwidth
Product
Phase Margin
–3 dB Bandwidth
Slew Rate
Short-Circuit Output
Current
Supply Current (per
Op Amp)
Channel-to-
Channel Crosstalk
Note 1:
—
—
GBW
PM
BW
SR
I
SC
I
S
—
—
—
—
—
1.8
1.5
—
—
V+ – 80 mV
V+ – 3 mV
Typ.
0.1
0.1
0.5
6
10
5
1
75
78
74
89
100
V+ –
55 mV
V+ –
1.4 mV
V– +
14 mV
V– +
0.85 mV
2.1
57
4.2
2
2.6
2.2
27
–100
Max.
6
5
—
—
—
—
—
—
—
—
—
—
—
V
—
V– + 20 mV
V
V– + 3 mV
—
—
—
—
—
—
43
—
MHz
°
MHz
V/µs
mA
µA
dB
R
L
= 500 kΩ
R
L
= 20 kΩ, C
L
= 2 pF, A
V
= 11
R
L
= 20 kΩ, C
L
= 2 pF, A
V
= 11
R
L
= 1 MΩ, C
L
= 2 pF, A
V
= 1
R
L
= 1 MΩ, C
L
= 2 pF, A
V
= 1,
Positive Slew Rate = 1.5 V/µs
Source
Sink
No Load
Note 1
R
L
= 500 kΩ
R
L
= 5 kΩ
dB
Units
mV
mV
µV/°C
pA
pA
V
dB
dB
—
T
A
= +25°C
—
—
—
—
CMRR > 50 dB
0V < V
CM
< 1V
Supply voltage change of 2V to
2.7V.
R
L
= 5 kΩ, V
OUT
= 1.4 V
PP
R
L
= 100 kΩ, V
OUT
= 1.4 V
PP
R
L
= 500 kΩ, V
OUT
= 1.4 V
PP
R
L
= 5 kΩ
Conditions
DC signal referenced to input. Refer to the
Typical Performance Curves
section’s AC performance graphs.
DS20005836A-page 4
2017 Microchip Technology Inc.
MIC862
TABLE 1-2:
ELECTRICAL CHARACTERISTICS
Electrical Characteristics:
V+ = +2.7V, V– = 0V, V
CM
= V+/2; R
L
= 500 kΩ to V+/2; –40°C
≤
T
A
≤
+85°C unless
otherwise noted.
Parameters
Input Offset Voltage
Differential Offset
Voltage
Input Offset Voltage
Temperature
Coefficient
Input Bias Current
Input Offset Current
Input Voltage
Range (from V–)
Common-Mode
Rejection Ratio
Power Supply
Rejection Ratio
Large-Signal
Voltage Gain
Gain-Bandwidth
Product
Phase Margin
–3 dB Bandwidth
Slew Rate
Short-Circuit Output
Current
Supply Current (per
Op Amp)
Channel-to-
Channel Crosstalk
Note 1:
I
B
I
OS
V
CM
CMRR
PSRR
V
OS
Symbol
Min.
–6
–5
—
—
—
—
1
65
60
65
A
VOL
GBW
PM
BW
SR
I
SC
I
S
—
80
90
—
—
—
—
4.5
4.5
—
—
Typ.
0.1
0.1
0.5
6
10
5
1.8
83
85
77
90
101
2.3
50
4.2
3
6.3
6.2
28
–120
Max.
6
5
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
45
—
MHz
°
MHz
V/µs
mA
µA
dB
dB
Units
mV
mV
µV/°C
pA
pA
V
dB
dB
—
T
A
= +25°C
—
—
—
—
CMRR > 60 dB
0V < V
CM
< 1.35V
Supply voltage change of 2.7V to
3V
R
L
= 5 kΩ, V
OUT
= 2 V
PP
R
L
= 100 kΩ, V
OUT
= 2 V
PP
R
L
= 500 kΩ, V
OUT
= 2 V
PP
R
L
= 20 kΩ, C
L
= 2 pF, A
V
= 11
R
L
= 20 kΩ, C
L
= 2 pF, A
V
= 11
R
L
= 1 MΩ, C
L
= 2 pF, A
V
= 1
R
L
= 1 MΩ, C
L
= 2 pF, A
V
= 1,
Positive Slew Rate = 1.5 V/µs
Source
Sink
No Load
Note 1
Conditions
DC signal referenced to input. Refer to the
Typical Performance Curves
section’s AC performance graphs.
2017 Microchip Technology Inc.
DS20005836A-page 5
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