MIC864
Dual 350kHz Rail-to-Rail
Operational Amplifier
General Description
The MIC864 is a dual operational amplifier offering small-
size, low-power consumption (33µA/channel typical),
‘greater-than-the-rails’ input capability, and output range
to within 15mV of the supply rails. The MIC864 can be
operated with a single supply of +2.5V to +5.5V or a dual-
supply of ±1.25V to ±2.75V, and features an excellent
speed/power ratio with a gain bandwidth product of
350kHz.
The MIC864 was designed with input stage
transconductance normalization, making it immune to
common-mode rejection ratio (CMRR) and power supply
rejection ratio (PSRR) degradation across the input
voltage range. This feature makes the MIC864 superior to
some earlier operational amplifiers, in which a region of
the input voltage range was subject to degraded
performance.
The MIC864 is available with an industry standard pin
configuration in an 8-pin SOIC package, and is specified to
operate from
−40°C
to +125°C junction temperature.
Data sheets and support documentation can be found on
Micrel’s web site at:
www.micrel.com.
Features
•
2.5V to 5.5V single or ±1.25V to ±2.75V dual supply
voltage
•
33µA per channel quiescent current
•
350kHz gain bandwidth product
•
0.2V/µs slew rate
•
18mA output drive capability (sink or source)
•
200mV greater-than-the-rails input capability
•
Rail-to-rail output (within 15mV)
•
80dB common mode rejection ratio (CMRR)
•
80dB power supply rejection ratio (PSRR)
•
8-pin SOIC Package
Applications
•
•
•
•
Battery-powered equipment
Cellular phone PA biasing circuits
Carbon monoxide detectors
Smoke detectors
_________________________________________________________________________________________________________________________
Pin Configuration
MIC864 8-Pin SOIC (M)
(Top View)
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 •
http://www.micrel.com
March 2012
M9999-032612-A
Micrel, Inc.
MIC864
Ordering Information
Part Number
MIC864YM
Junction Temperature Range
–40°C to +125°C
Package
8-Pin SOIC
Pin Configuration
MIC864 8-Pin SOIC (M)
(Top View)
Pin Description
Pin Number
1
2
3
4
5
6
7
8
Pin Name
OUTA
−INA
+INA
V−
+INB
−INB
OUTB
V+
Pin Function
Output of operational amplifier A.
Inverting input of operational amplifier A.
Non-inverting input of operational amplifier A.
Negative Power Supply Connection. Connect to GND for single supply operation.
Non-inverting input of operational amplifier B.
Inverting input of operational amplifier B.
Output of operational amplifier B.
Positive Power Supply Input. Connect a 0.1µF ceramic bypass capacitor from V+ to V−, placed within
0.2in (5mm) of the MIC864.
March 2012
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M9999-032612-A
Micrel, Inc.
MIC864
Absolute Maximum Ratings
(1)
Supply Voltage (V+ to V−)...........................................+6.0V
Differential Input Voltage (|V
+IN
−
V
-IN
|)........................+6.0V
Input Voltage (V
+IN
, V
−IN
) ............... (V+) + 0.2V, (V−)
−
0.2V
Output Short-Circuit Duration............................. Continuous
Lead Temperature (soldering, 10s)............................ 260°C
Storage Temperature (T
S
).........................−65°C to +150°C
Junction Temperature (T
J
) ........................−40°C to +150°C
ESD Rating
(3)
................................................. ESD Sensitive
Operating Ratings
(2)
Supply Voltage (V+ to V−)............................ +2.5V to +5.5V
Differential Input Voltage (|V
+IN
−
V
-IN_
|)........ +2.5V to +5.5V
Input Voltage (V
+IN
, V
−IN)
.................(V+) + 0.2V, (V−)
−
0.2V
Ambient Temperature (T
A
) ........................ –40°C to +125°C
Package Thermal Resistance
SOIC-8 (θ
JA
).......................................................99°C/W
Electrical Characteristics
(4)
V+ = +2.5V, V− =
−2.5V,
V
CM
= ((V+) – (V-))/2; R
L
= 100kΩ connected to ((V+) – (V−))/2; T
J
= +25°C, unless otherwise noted.
Bold
values indicate –40°C
≤
T
J
≤
+125°C.
Symbol
V
OS
Parameter
Input Offset Voltage
Input Offset Voltage
Temperature Coefficient
I
B
I
OS
V
CM
CMRR
PSRR
A
VOL
V
OUT
GBW
SR
I
SC
I
S
Notes:
1.
2.
3.
4.
Exceeding the absolute maximum rating may damage the device.
The device is not guaranteed to function outside its operating rating.
Devices are ESD Sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF.
Specification for packaged product only.
Condition
Min.
Typ.
2
4
±2.5
±0.5
Max.
8
Units
mV
µV/°C
Input Bias Current
Input Offset Current
Input Voltage Range
Common-Mode Rejection
Ratio
Power Supply Rejection
Ratio
Large-Signal Voltage Gain
Maximum Output Voltage
Swing
Gain-Bandwidth Product
Slew Rate
Short-Circuit Output
Current
Supply Current per
Amplifier
(V−)
−
0.2V
<
V
CM
<
(V+) + 0.2V
2.5
<
V
S
<
5.25V
C
L
= 100pF, R
L
= 100kΩ
R
L
= 100kΩ
R
L
= 5kΩ
C
L
= 100pF, R
L
= 100kΩ
A
V
= 1, C
L
= 100pF, R
L
= 100kΩ
Source, RL connected to V−
Sink, R
L
connected to V+
No Load
(V−) + 0.015
(V−) + 0.125
(V−)
−
0.2
54
±20
±15
(V+) + 0.2
pA
pA
V
dB
dB
dB
80
80
80
(V+)
−
0.015
(V+)
−
0.125
350
0.2
23
15
33
50
V
kHz
V/µs
mA
µA
March 2012
3
M9999-032612-A
Micrel, Inc.
MIC864
Typical Characteristics
V+ =
V
S
/2 = 2.5V, V− =
−V
S
/2 =
−2.5V,
R
L
= 100kΩ , R
L
and C
L
connected in parallel to GND; T
A
= +25°C, unless otherwise noted.
PSRR vs. Frequency
100
80
60
40
20
0
-20
10
10
100
100
1k
1000
10k
10000
100k
100000
1M
1000000
100
80
60
40
20
0
-20
10
10
100
100
1k
1000
10k
10000
100k
100000
1M
1000000
CMRR (100kΩ)
CMRR (100kΩ || 100pF)
CMRR vs. Frequency
100
80
60
Open-Loop Gain and Phase
vs. Frequency
45
0
-45
-90
-135
-180
GAIN (100k
Ω
)
Gain (100kΩ)
-20
1
1
10
10
100
100
1k
1000
PHASE (100k
Ω
)
Phase (100kΩ)
-225
10k 100k
1000000
10000 100000
1M
40
20
0
PSRR (100kΩ)
PSRR (100kΩ || 100pF)
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
Open-Loop Gain and Phase
vs. Frequency
100
80
60
45
0
Open-Loop Gain and Phase
vs. Frequency
100
GAIN (5kΩ))
Gain (5k
Ω
80
PHASE (5k
Ω
)
Phase (5kΩ)
0
80
Open-Loop Gain and Phase
vs. Frequency
45
100
45
0
-45
-90
-135
Gain (5k
Ω
II 100pF)
GAIN (5kΩ || 100pF)
PHASE(5kΩ || II 100pF)
Phase (5k
Ω
100pF)
1
10
10
100
100
1k
1000
10k
10000
-180
-225
100k
1000000
100000
1M
PHASE (Degrees)
PHASE (Degrees)
-45
-90
-135
-180
-225
60
-45
-90
-135
-180
-225
1
1
10
10
100
100
1k
1000
10k
10000
100k
1M
100000 1000000
60
40
20
0
-20
40
20
0
-20
40
20
0
-20
Gain (100k
Ω
& 100pF)
GAIN (100kΩ AND 100pF)
PHASE(100kΩ ||II100pF)
Phase (100k
Ω
100pF)
1
1
10
10
100
100
1k
1000
10k
10000
100k 1M
100000 1000000
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
Output Voltage Swing vs.
Output Current
5
4.5
Supply Current vs. Supply
Voltage
90
80
NO LOAD
DUAL OP AMP
30
Short Circuit Current vs. Supply
Voltage
+IN = 0V, Sinking, RL to
+IN = 0V, SINKING, R
L
TO V+
25
+IN = = 5V, Sourcing, RL
L
to V-
+IN 5V, SOURCING, R TO V-
OUTPUT VOLTAGE (V)
4
3.5
3
2.5
2
1.5
1
0.5
0
0
5
10
15
20
25
30
=+IN 0V, SINKING, RL to V+
+IN = = 0V, Sinking, R
L
TO V+
+IN = 5V, SOURCING, R
L
TO V-
+IN = 5V, Sourcing, RL to V-
SUPPLY CURRENT (µA)
60
50
40
30
20
10
0
2
2.5
3
3.5
4
4.5
5
5.5
SINGLE OP AMP
CURRENT (mA)
70
20
15
10
5
0
2
2.5
3
3.5
4
4.5
5
5.5
OUTPUT CURRENT (mA)
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
March 2012
4
M9999-032612-A
PHASE (Degrees)
GAIN (dB)
GAIN (dB)
GAIN (dB)
PHASE (Degrees)
CMRR (dB)
PSRR (dB)
GAIN (dB)
Micrel, Inc.
MIC864
Functional Characteristics
V+ =
V
S
/2 = 2.5V, V− = -V
S
/2 = 2.5V, R
L
= 100kΩ , R
L
and C
L
connected in parallel to GND; T
A
= +25°C, unless otherwise noted.
March 2012
5
M9999-032612-A
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