Micrel MIC861 Teenyâ ¢ ultra-low-power op amp Datasheet

MIC861
Teeny™ Ultra-Low-Power Op Amp
General Description
Features
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.
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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.
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
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Portable equipment
PDAs
Pagers
Cordless phones
Consumer electronics
Functional Pinout
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
Micrel, Inc.
MIC861
Ordering Information
(1)
Part Number
Marking
MIC861YC5
Ambient Temperature Range
Package
–40° to +85°C
5-Pin SC70
A33
Note:
1. Underbar marking may not be to scale.
Pin Configuration
5-Pin SC70 (C5)
(Top View)
Pin Description
Pin Number
Pin Name
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
5
V+
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Pin Function
Output of operational amplifier.
Positive power supply input. Connect a 10µF and 0.1µF capacitor in parallel to this pin for power
supply bypassing.
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MIC861
Absolute Maximum Ratings(2)
Operating Ratings(3)
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
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
Input Offset Voltage
Note 6
-10
2
10
mV
VOS
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
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
V
±0.2mV
No load
4.2
V
V ±2mV
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.
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MIC861
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
Input Offset Voltage
Note 6
-10
2
10
mV
VOS
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
RL = 100kΩ, VOUT = 4V peak-to-peak
60
76
dB
RL = 500kΩ, VOUT = 4V peak-to-peak
68
83
dB
V ±2mV
V
±0.7mV
V
AVOL
Large Signal Voltage Gain
VOUT
Maximum Output Voltage Swing
RL = 500kΩ
VOUT
Minimum Output Voltage Swing
RL = 500kΩ
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
IS
Supply Current
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V
±0.7mV
V ±2mV
V
Source
10
24
mA
Sink
10
24
mA
No load
4.6
4
9
µA
Revision 3.0
Micrel, Inc.
MIC861
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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MIC861
DC Typical Characteristics
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MIC861
AC Typical Characteristics
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MIC861
Functional Characteristics
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MIC861
Functional Characteristics (Continued)
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MIC861
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
September 9, 2014
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.
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MIC861
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.
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com
Micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished in this data sheet. This
information is not intended as a warranty and Micrel does not assume responsibility for its use. Micrel reserves the right to change circuitry,
specifications and descriptions at any time without notice. No license, whether express, implied, arising by estoppel or otherwise, to any intellectual
property rights is granted by this document. Except as provided in Micrel’s terms and conditions of sale for such products, Micrel assumes no liability
whatsoever, and Micrel disclaims any express or implied warranty relating to the sale and/or use of Micrel products including liability or warranties
relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right.
Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product
can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical
implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A
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© 2014 Micrel, Incorporated.
September 9, 2014
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