MIC861
Micrel, Inc.
MIC861
Teeny™ Ultra Low Power Op Amp
General Description
The MIC861 is a rail-to-rail output, input common-mode to
ground, operational amplifier in
Teeny™
SC70 packaging.
The MIC861 provides 400kHz gain-bandwidth product while
consuming an incredibly low 4.6µA supply current.
The SC70 packaging achieves significant board space savings
over devices packaged in SOT-23 or MSOP-8 packaging.
The SC70 occupies approximately half the board area of a
SOT-23 package.
Features
•
•
•
•
•
•
•
•
Teeny™
SC70 packaging
400kHz gain-bandwidth product
650kHz, –3dB bandwidth
4.6µA supply current
Rail-to-Rail output
Ground sensing at input (common mode to GND)
Drives large capactive loads (1000pF)
Unity gain stable
Applications
•
•
•
•
•
Portable equipment
PDAs
Pagers
Cordless Phones
Consumer Electronics
Ordering Information
Part Number
Standard
MIC861BC5
Marking
A33
Pb-Free
MIC861YC5
Marking*
A33
Ambient
Temp. Range
–40ºC to +85ºC
Package
SC-70-5
* Underbar marking may not be to scale.
Pin Configuration
Functional Pinout
IN−
3
V−
2
IN+
1
A33
4
5
Part
Identification
IN−
V−
3
IN+
1
2
OUT
V+
4
5
OUT
V+
SC-70
Teeny
is a trademark of Micrel, Inc.
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
February 2006
1
M9999-022706
MIC861
Micrel, Inc.
Absolute Maximum Ratings
(Note 1)
Supply Voltage (V
V+
– V–) .......................................... +6.0V
Differentail Input Voltage (V
IN+
– V
IN–
),
Note 4 ...... +6.0V
Input Voltage (V
IN+
– V
IN–
) ...................V
+
+ 0.3V, V
–
–0.3V
Lead Temperature (soldering, 5 sec.) ........................ 260°C
Output Short Circuit Current Duration ...................Indefinite
Storage Temperature (T
S
) ......................................... 150°C
ESD Rating,
Note 3
Operating Ratings
(Note 2)
Supply Voltage (V+ – V–) ........................ +2.43V to +5.25V
Ambient Temperature Range...................... –40°C to +85°C
Package Thermal Resistance................................ 450°C/W
Electrical Characteristics
Symbol
V
OS
I
B
V+ = +2.7V, V– = 0V, V
CM
= V+/2; R
L
= 500kΩ to V+/2; T
A
= 25°C, unless otherwise noted.
Bold
values indicate –40°C≤ T
A
≤ +85°C.
Parameter
Condition
Note 5
Min
–10
Typ
2
15
20
10
CMRR > 60dB
Supply voltage change of 3V
R
L
= 500k, V
OUT
2V peak to peak
R
L
= 500k
R
L
= 500k
R
L
= 100k, V
OUT
2V peak to peak
0 < V
CM
< 1.35V
45
50
60
73
1.8
77
83
74
83
V–+0.2mV
V–+ 2mV
350
500
0.12
6
5
4.2
9
Max
10
Input Offset Voltage
Input Offset Voltage Temp Coefficient
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
Minimum Output Voltage Swing
Gain-Bandwidth Product
–3dB Bandwidth
Slew Rate
Short-Circuit Output Current
Supply Current
Units
mV
µV/°C
pA
pA
V
dB
dB
dB
dB
V
V
kHz
kHz
V/µs
mA
mA
µA
I
OS
V
CM
CMRR
PSRR
A
VOL
V
OUT
V
OUT
BW
SR
I
SC
I
S
GBW
V+–2mV
V+–0.7mV
R
L
= 200kΩ, C
L
= 2pF, V
OUT
= 0
A
V
= 1, C
L
= 2pF, R
L
= 1MΩ
Source
Sink
A
V
= 1, C
L
= 2pF, R
L
= 1MΩ
No Load
V
OS
I
B
V+= +5V, V–= 0V, V
CM
= V+/2; R
L
= 500kΩ to V+/2; T
A
= 25°C, unless otherwise noted.
Bold
values indicate –40°C≤ T
A
≤ +85°C.
Input Offset Voltage
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
Minimum Output Voltage Swing
Gain-Bandwidth Product
–3dB Bandwidth
CMRR > 60dB
Supply voltage change of 1V
R
L
= 500k, V
OUT
4.0V peak to peak
R
L
= 500k
R
L
= 500k
R
L
= 100k, V
OUT
4.0V peak to peak
0 < V
CM
< 3.5V
60
45
60
68
Note 5
–10
2
10
Input Offset Voltage Temp Coefficient
15
20
10
4.2
80
85
76
83
V–+0.7mV
V–+ 2mV
400
650
mV
µV/°C
pA
pA
V
dB
dB
dB
dB
V
V
kHz
kHz
I
OS
V
CM
CMRR
PSRR
A
VOL
V
OUT
V
OUT
BW
GBW
V+–2mV
V+–0.7mV
R
L
= 200kΩ, C
L
= 2pF, V
OUT
= 0
A
V
= 1, C
L
= 2pF, R
L
= 1MΩ
M9999-022706
2
February 2006
MIC861
Symbol
SR
I
SC
I
S
Note 1.
Note 2.
Note 3.
Note 4.
Note 5.
Micrel, Inc.
Parameter
Slew Rate
Short-Circuit Output Current
Supply Current
Condition
Source
Sink
No Load
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, 1.5k in series with 100pF. Pin 4 is ESD sensetive
Exceeding the maximum differential input voltage will damage the input stage and degrade performance (in particular, input bias current is
likely to increase.
The offset voltage distribution is centered around 0V. The typical offset number shown, is equal to the standard deviation of the voltage offset
distribution.
Min
10
10
Typ
0.12
24
24
4.6
Max
Units
V/µs
mA
mA
A
V
= 1, C
L
= 2pF, R
L
= 1MΩ
9
µA
February 2006
3
M9999-022706
MIC861
Micrel, Inc.
Test Circuits
Test Circuit 1. A
V
= 11
Test Circuit 2:A
V
= 2
Test Circuit 3. A
V
= 1
V+
10µF
100µF
Test Circuit 4. A
V
= –1
Input
BNC
50Ω
10µF
48k
10k
50Ω
0.1µF
170k
MIC861
BNC
Output
10k
0.1µF
All resistors:
1% metal film
100µF
10µF
V—
Test Circuit 5. Positive Power Supply Rejection Ratio Measurement
M9999-022706
4
February 2006
MIC861
Micrel, Inc.
DC Performance Characteristics
Output Voltage vs.
Output Current
5
4
3
2
1
25°C
85°C
0
0 -5 -10 -15 -20 -25 -30 -35 -40
OUTPUT CURRENT (mA)
-40°C
Sourcing
Output Voltage vs.
Output Current
5 Sinking
4
3
2
1
0
0
-40°C
5
10 15 20 25 30
OUTPUT CURRENT (mA)
85°C
25°C
30
25
20
15
10
5
Short Circuit Current vs.
Supply Voltage
Sourcing
-40°C
25°C
85°C
0
0.8 1 1.2 1.4 1.6 1.8 2 2.2 2.4
SUPPLY VOLTAGE (±V)
30
25
20
15
10
5
Short Circuit Current vs.
Supply Voltage
Sinking
-40°C
25°C
1.1
1
0.9
0.8
Offset Voltage vs.
Common-Mode Voltage
V+ = 2.7V
85°C
1.1
1
0.9
Offset Voltage vs.
Common-Mode Voltage
V+ = 5V
85°C
25°C
85°C
25°C
–40°C
0.5
1
1.5
2
2.5
COMMON-MODE VOLTAGE (V)
0.8
0.7
0.6
0.5
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
COMMON-MODE VOLTAGE (V)
–40°C
0.7
0.6
0.5
0
0
0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5
SUPPLY VOLTAGE (±V)
9
8
7
6
5
4
3
2
1
Offset Voltage vs.
Supply Voltage
85°C
25°C
-40°C
100
80
60
40
20
0
0.1
Open Loop Gain vs.
Resistive Load
V+ = 5V
V+ = 2.7V
7
6
5
4
3
2
1
Supply Current vs.
Temperature
5V
2.7V
0
0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5
SUPPLY VOLTAGE (V)
1
10 100 1000 10000
RESISTIVE LOAD (kΩ)
0
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
0
-1
-2
-3
-4
-5
Offset Voltage vs.
Temperature
30
25
20
Short Circuit Current
vs. Temperature
Sourcing
0
-5
-10
Short Circuit Current
vs. Temperature
Sinking
2.7V
5V
15
10
5V
-15
-20
-25
5V
2.7V
-6
-40 -20 0 20 40 60 80 100
TEMPERATURE (
°C)
2.7V
0
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
5
-30
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
February 2006
5
M9999-022706
微控制器 MCU
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