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, as well as a low
profile extra-thin (XTDFN) 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
•
10-pin 2.5mm x 2.5mm x 0.4mm XTDFN package
Applications
•
•
•
•
Battery-powered equipment
Cellular phone PA biasing circuits
Carbon monoxide detectors
Smoke detectors
_________________________________________________________________________________________________________________________
Pin Configuration
MIC864 8-Pin SOIC (M)
(Top View)
MIC864 10-Pin 2.5mm x 2.5mm XTDFN (MX)
(Top View)
1.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 •
http://www.micrel.com
June 30, 2014
063014-2.0
Micrel, Inc.
MIC864
Ordering Information
Part Number
MIC864YM
MIC864YMX
Note:
1.
Extra Thin DFN package pin 1 identifier = ▼.
Marking
864YM
864
Junction Temperature Range
–40°C to +125°C
–40°C to +125°C
Package
8-Pin SOIC
10-Pin Extra Thin DFN (2.5mm x 2.5mm x 0.4mm)
(1)
Pin Configuration
Δ
NC
5
10
9
8
7
6
NC
8-Pin SOIC (M)
(Top View)
10-Pin 2.5mm x 2.5mm XTDFN (MX)
(Top View)
Pin Description
Pin Number
SOIC
1
2
3
4
5
6
7
8
-
-
Pin Number
XTDFN
1
2
3
4
7
8
9
10
5, 6
EP
Pin
Name
OUTA
−INA
+INA
V−
+INB
−INB
OUTB
V+
NC
ePad
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.
Not internally connected, leave unconnected.
Heatsink pad, connect to GND for best thermal performance.
June, 2014
2
063014-2.0
Micrel, Inc.
MIC864
Absolute Maximum Ratings
(2)
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
(4)
................................................. ESD Sensitive
Operating Ratings
(3)
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
2.5mm x 2.5mm XTDF-10 (θ
JA
) ......................... 73°C/W
Electrical Characteristics
(5)
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
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
350
0.2
23
15
33
50
(V−)
−
0.2
54
80
80
80
(V+)
−
0.015
(V+)
−
0.125
Condition
Min.
Typ.
2
4
±2.5
±0.5
±20
±15
(V+) + 0.2
Max.
8
Units
mV
µV/°C
pA
pA
V
dB
dB
dB
V
kHz
V/µs
mA
I
S
Notes:
2.
3.
4.
5.
µA
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.
June, 2014
3
063014-2.0
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
100
CMRR vs. Frequency
100
Open-Loop Gain and Phase
vs. Frequency
45
80
80
80
60
0
-45
CMRR (dB)
PSRR (dB)
GAIN (dB)
60
60
40
40
40
-90
20
PSRR (100kΩ)
PSRR (100kΩ || 100pF)
-20
10
10
100
100
1k
1000
10k
10000
100k
100000
1M
1000000
20
CMRR (100kΩ)
CMRR (100kΩ || 100pF)
-20
10
10
100
100
1k
1000
10k
10000
100k
100000
1M
1000000
20
0
GAIN (100kΩ)
Gain
-20
1
1
10
10
100
100
1k
1000
PHASE (100kΩ)
Phase (100kΩ)
-135
-180
0
0
-225
10k 100k
1000000
10000 100000
1M
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
Open-Loop Gain and Phase
vs. Frequency
100
45
Open-Loop Gain and Phase
vs. Frequency
100
GAIN (5kΩ)
Gain (5kΩ)
PHASE (5kΩ)
Phase (5kΩ)
0
80
Open-Loop Gain and Phase
vs. Frequency
45
100
45
80
60
0
80
0
-45
PHASE (Degrees)
PHASE (Degrees)
GAIN (dB)
GAIN (dB)
40
-90
GAIN (dB)
-45
60
-45
60
40
-90
40
-90
20
0
-135
-180
20
0
-135
-180
20
0
-135
-180
Gain
& 100pF)
GAIN (100kΩ AND 100pF)
PHASE(100kΩ ||II100pF)
(100kΩ 100pF)
Phase
1
1
10
Gain (5kΩ II 100pF)
GAIN (5kΩ || 100pF)
PHASE (5kΩ II 100pF)
Phase (5kΩ || 100pF)
1
1
10
10
100
100
1k
1000
10k
10000
-20
10
100
100
1000
1k
10000
10k
100000 1000000
100k
-225
1M
-20
1
1
10
10
100
100
1k
1000
10k
10000
-225
100k
1M
100000 1000000
-20
-225
100k
1000000
100000
1M
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
25
30
Short Circuit Current vs. Supply
Voltage
+IN = 0V, Sinking, RL to
+IN = 0V, SINKING, R
L
TO V+
+IN = = 5V, Sourcing, RL
L
to V-
+IN 5V, SOURCING, R TO 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)
OUTPUT VOLTAGE (V)
60
50
SINGLE OP AMP
40
30
20
CURRENT (mA)
70
20
15
10
5
10
0
2
2.5
3
3.5
4
4.5
5
5.5
0
2
2.5
3
3.5
4
4.5
5
5.5
OUTPUT CURRENT (mA)
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
June, 2014
4
063014-2.0
PHASE (Degrees)
PHASE (Degrees)
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.
June, 2014
5
063014-2.0
传感器
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