MIC861
Teeny™ Ultra-Low-Power Op Amp
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
September 9, 2014
Revision 3.0
General Description
The MIC861 is a rail-to-rail output, input common-mode to
ground, operational amplifier in Teeny™ SC70 packaging.
The MIC861 provides a 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.
Datasheets and support documentation are available on
Micrel’s website at: www.micrel.com.
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 capacitive loads (1000pF)
Unity gain stable
Applications
Portable equipment
PDAs
Pagers
Cordless phones
Consumer electronics
Functional Pinout
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Ordering Information
Part Number
Marking(1)
Ambient Temperature Range
Package
MIC861YC5
A33
–40° to +85°C
5-Pin SC70
Note:
1. Underbar marking may not be to scale.
Pin Configuration
5-Pin SC70 (C5)
(Top View)
Pin Description
Pin Number
Pin Name
Pin Function
1
IN+
Non-inverting input.
2
V-
Negative power supply connection. Connect a 10µF and 0.1µF capacitor in parallel to this pin for
power supply bypassing.
3
IN-
Inverting input.
4
OUT
Output of operational amplifier.
5
V+
Positive power supply input. Connect a 10µF and 0.1µF capacitor in parallel to this pin for power
supply bypassing.
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Absolute Maximum Ratings(2)
Supply Voltage (VV+ – VV-)........................................... +6.0V
Differential Input Voltage |VIN+ – VIN-| .......................... +6.0V
Input Voltage (VIN+ – VIN-) ...................... V+ + 0.3V, V- - 0.3V
Lead Temperature (soldering, 5s) .............................. 260°C
Output Short Circuit Current Duration .................... Indefinite
Storage Temperature (Ts) .......................................... 150°C
ESD Rating ................................................................. Note 4
Operating Ratings(3)
Supply Voltage (VV+ – VV-) ....................... +2.43V to +5.25V
Ambient Temperature (TA) .......................... –40°C to +85°C
Junction Thermal Resistance
5-Pin SC70 (ƟJA) ............................................. 450°C/W
Electrical Characteristics(5)
V+ = +2.7V, V- = 0V, VCM = V+/2; RL = 500kΩ to V+/2; TA = 25°C, bold values indicate –40°C ≤ TA ≤ +85°C, unless noted.
Symbol
Parameter
Condition
Min.
Typ.
Max.
Units
VOS
Input Offset Voltage
Note 6
-10
2
10
mV
Input Offset Voltage
Temperature Coefficient
15
µV/°C
IB
Input Bias Current
20
pA
IOS
Input Offset Current
10
pA
VCM
Input Voltage Range
CMRR >60dB
1.8
V
CMRR
Common Mode Rejection Ratio
0 < VCM < 1.35V
45
77
dB
PSRR
Power Supply Rejection Ratio
Supply voltage change of 3V
50
83
dB
AVOL
Large Signal Voltage Gain
RL = 100kΩ, VOUT = 2V peak-to-peak
60
74
dB
RL = 500kΩ, VOUT = 2V peak-to-peak
73
83
dB
VOUT
Maximum Output Voltage Swing
RL = 500kΩ
V ±2mV
V
±0.7mV
V
VOUT
Minimum Output Voltage Swing
RL = 500kΩ
V
±0.2mV
V ±2mV
V
GBW
Gain-Bandwidth Product
RL = 200kΩ, CL = 2pF, VOUT = 0
350
kHz
BW
–3dB Bandwidth
AV = 1, CL = 2pF, RL = 1MΩ
500
kHz
SR
Slew Rate
AV = 1, CL = 2pF, RL = 1MΩ
0.12
V/µs
ISC
Short-Circuit Output Current
Source
6
mA
Sink
5
mA
IS
Supply Current
No load
4.2
9
µA
Notes:
2. Exceeding the absolute maximum ratings may damage the device.
3. The device is not guaranteed to function outside its operating ratings.
4. Devices are ESD sensitive. Handling precautions are recommended. Human body model, 1.5kΩ in series with 100pF. Pin 4 is ESD sensitive.
5. Specification for packaged product only. Exceeding the maximum differential input voltage will damage the input stage and degrade performance (in
particular, input bias will likely increase).
6. The offset voltage distribution is centered around 0V. The typical offset number shown is equal to the standard deviation of the voltage offset
distribution.
MIC861
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Electrical Characteristics(5) (Continued)
V+ = +5V, V- = 0V, VCM = V+/2; RL = 500kΩ to V+/2; TA = 25°C, bold values indicate –40°C ≤ TA ≤ +85°C, unless noted.
Symbol
Parameter
Condition
Min.
Typ.
Max.
Units
VOS
Input Offset Voltage
Note 6
-10
2
10
mV
Input Offset Voltage
Temperature Coefficient
15
µV/°C
IB
Input Bias Current
20
pA
IOS
Input Offset Current
10
pA
VCM
Input Voltage Range
CMRR >60dB
4.2
V
CMRR
Common Mode Rejection Ratio
0 < VCM < 3.5V
60
80
dB
PSRR
Power Supply Rejection Ratio
Supply voltage change of 1V
45
85
dB
AVOL
Large Signal Voltage Gain
RL = 100kΩ, VOUT = 4V peak-to-peak
60
76
dB
RL = 500kΩ, VOUT = 4V peak-to-peak
68
83
dB
VOUT
Maximum Output Voltage Swing
RL = 500kΩ
V ±2mV
V
±0.7mV
V
VOUT
Minimum Output Voltage Swing
RL = 500kΩ
V
±0.7mV
V ±2mV
V
GBW
Gain-Bandwidth Product
RL = 200kΩ, CL = 2pF, VOUT = 0
400
kHz
BW
–3dB Bandwidth
AV = 1, CL = 2pF, RL = 1MΩ
650
kHz
SR
Slew Rate
AV = 1, CL = 2pF, RL = 1MΩ
0.12
V/µs
ISC
Short-Circuit Output Current
Source
10
24
mA
Sink
10
24
mA
IS
Supply Current
No load
4.6
9
µA
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Test Circuits
Test Circuit 1. AV = 11
Test Circuit 2. AV = 2
Test Circuit 3. AV = 1
Test Circuit 4. AV = –1
Test Circuit 5. Positive Power Supply Rejection Ratio
Measurement
Test Circuit 6. Closed-Loop Unity Gain Frequency Response
Measurement
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DC Typical Characteristics
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AC Typical Characteristics
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Functional Characteristics
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Functional Characteristics (Continued)
MIC861
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Functional Characteristics (Continued)
Applications Information
Regular supply bypassing techniques are recommended.
A 10µF capacitor in parallel with a 0.1µF capacitor on both
the positive and negative supplies is ideal. For best
performance, all bypassing capacitors should be located
as close to the op amp as possible and all capacitors
should be low equivalent series inductance (ESL) and
equivalent series resistance (ESR). Surface-mount
ceramic capacitors are ideal.
MIC861
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Revision 3.0
Package Information(7)
5-Pin SC70 (C5)
Note:
7. Package information is correct as of the publication date. For updates and most current information, go to www.micrel.com.
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