Micrel MIC862 Dual ultra-low-power op amp in sot23-8 Datasheet

MIC862
Dual Ultra-Low-Power Op Amp in SOT23-8
General Description
Features
The MIC862 is a dual low-power operational amplifier in an
SOT23-8 package. It is designed to operate in the 2V to
5V range, rail-to-rail output, with input common-mode to
ground. The MIC862 provides 3MHz gain-bandwidth
product while consuming only a 31μA/channel supply
current.
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With low supply voltage and SOT23-8 packaging, MIC862
provides two channels as general-purpose amplifiers for
portable and battery-powered applications. Its package
provides the maximum performance available while
maintaining an extremely slim form factor. The minimal
power consumption of this IC maximizes the battery life
potential.
Datasheets and support documentation are available on
Micrel’s website at: www.micrel.com.
SOT23-8 package
3MHz gain-bandwidth product
5MHz, –3dB bandwidth
31µA supply current
Rail-to-rail output
Ground sensing at input (common mode to GND)
Drive large capacitive loads
Unity gain stable
Applications
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Portable equipment
Medical instruments
PDAs
Pagers
Cordless phones
Consumer electronics
Typical Application
Peak Detector Circuit for AM Radio
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
July 29, 2014
Revision 3.0
Micrel, Inc.
MIC862
Ordering Information
Part Number
Marking
Ambient Temperature Range
Package
MIC862TYM8
A34
–40° to +85°C
SOT23-8
Pin Configuration
SOT23-8 (M8)
(Top View)
Pin Description
Pin Number
Pin Name
1
OUTA
2
INA-
Amplifier A inverting input
3
INA+
Amplifier A non-inverting input
4
V-
5
INB+
Amplifier B non-inverting input
6
INB-
Amplifier B inverting input
7
OUTB
8
V+
July 29, 2014
Pin Function
Amplifier A output
Negative supply
Amplifier B output
Positive supply
2
Revision 3.0
Micrel, Inc.
MIC862
Absolute Maximum Ratings(1)
Operating Ratings(2)
Supply Voltage (VV+ to VV-).......................................... +6.0V
(3)
Differential Input Voltage (VIN+ to VIN-) ...................... +6.0V
Input Voltage (VIN+ to VIN-) .................. VV+ + 0.3V, VV- - 0.3V
Lead Temperature (soldering, 10s) ............................ 260°C
Output Short-Circuit Current Duration ....................Indefinite
Operating Temperature ............................. –40°C to +125°C
Storage Temperature (Ts).......................................... 150°C
(4)
ESD Rating ................................................. ESD Sensitive
Supply Voltage (V+ to V-) .......................... +2.0V to +5.25V
Ambient Temperature (TA) .......................... –40°C to +85°C
Package Thermal Resistance
JA (Using 4 Layer PCB) .................................. 100°C/W
JC (Using 4 Layer PCB) .................................... 70°C/W
Electrical Characteristics(5)
V+ = +2V, 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
Input Offset Voltage
VOS
Min.
Typ.
Max.
Units
-6
0.1
6
mV
-5
0.1
5
mV
0.5
mV
Input Offset Voltage
Temperature Coefficient
6
µV/°C
IB
Input Bias Current
10
pA
IOS
Input Offset Current
5
pA
VCM
Input Voltage Range (from V-)
CMRR > 50dB
0.5
1
V
CMRR
Common-Mode Rejection Ratio
0 < VCM < 1V
45
75
dB
PSRR
Power Supply Rejection Ratio
Supply voltage change of 2V to 2.7V
50
78
dB
RL = 5kΩ, VOUT = 1.4VPP
66
74
dB
RL = 100kΩ, VOUT = 1.4VPP
75
89
dB
85
AVOL
Differential Offset Voltage
Large-Signal Voltage Gain
RL = 500kΩ, VOUT = 1.4VPP
VOUT
Maximum Output Voltage Swing
100
dB
RL = 5kΩ
V+ -80mV
V+ -55mV
V
RL = 500kΩ
V+ -3mV
V+ -1.4mV
RL = 5kΩ
V
V- +14mV
V- +20mV
V
V- +0.85mV
V- +3mV
V
VOUT
Minimum Output Voltage Swing
GBW
Gain-Bandwidth Product
RL = 20kΩ, CL = 2pF, AV = 11
2.1
MHz
PM
Phase Margin
RL = 20kΩ, CL = 2pF, AV = 11
57
°
BW
–3dB Bandwidth
RL = 1MΩ, CL = 2pF, AV = 1
4.2
MHz
SR
Slew Rate
RL = 1MΩ, CL = 2pF, AV = 1
Positive Slew Rate = 1.5V/µs
2
V/µs
ISC
Short-Circuit Ouptut Current
IS
Supply Current (per Op Amp)
No Load
Channel-to-Channel Crosstalk
Note 6
RL = 500kΩ
Source
1.8
2.6
mA
Sink
1.5
2.2
mA
27
-100
43
µA
dB
Notes:
1. Exceeding the absolute maximum ratings may damage the device.
2. The device is not guaranteed to function outside its operating ratings.
3. Exceeding the maximum differential input voltage will damage the input stage and degrade performance. In particular, input bias current is likely to
increase.
4. Devices are ESD sensitive. Handling precautions are recommended. Human body model, 1.5kΩ in series with 100pF.
5. Specification for packaged product only.
6. DC signal referenced to input. Refer to Typical Characteristics graphs for AC performance.
July 29, 2014
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Revision 3.0
Micrel, Inc.
MIC862
Electrical Characteristics(5) (Continued)
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
Input Offset Voltage
VOS
Min.
Typ.
Max.
Units
-6
0.1
6
mV
-5
0.1
5
mV
0.5
mV
Input Offset Voltage
Temperature Coefficient
6
µV/°C
IB
Input Bias Current
10
pA
IOS
Input Offset Current
5
pA
VCM
Input Voltage Range (from V-)
CMRR
PSRR
AVOL
Differential Offset Voltage
Common-Mode Rejection Ratio
Power Supply Rejection Ratio
Large-Signal Voltage Gain
CMRR > 60dB
1
1.8
V
0 < VCM < 1.35V
65
83
dB
Supply voltage change of 2.7V to 3V
60
85
dB
RL = 5kΩ, VOUT = 2VPP
65
77
dB
RL = 100kΩ, VOUT = 2VPP
80
90
dB
RL = 500kΩ, VOUT = 2VPP
90
101
dB
GBW
Gain-Bandwidth Product
RL = 20kΩ, CL = 2pF, AV = 11
2.3
MHz
PM
Phase Margin
RL = 20kΩ, CL = 2pF, AV = 11
50
°
BW
–3dB Bandwidth
RL = 1MΩ, CL = 2pF, AV = 1
4.2
MHz
SR
Slew Rate
RL = 1MΩ, CL = 2pF, AV = 1
Positive Slew Rate = 1.5V/µs
3
V/µs
ISC
Short-Circuit Ouptut Current
IS
Supply Current (per Op Amp)
No Load
Channel-to-Channel Crosstalk
Note 6
July 29, 2014
Source
4.5
6.3
mA
Sink
4.5
6.2
mA
28
-120
4
45
µA
dB
Revision 3.0
Micrel, Inc.
MIC862
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
Input Offset Voltage
VOS
Min.
Typ.
Max.
Units
-6
0.1
6
mV
-5
0.1
5
mV
0.5
mV
Input Offset Voltage
Temperature Coefficient
6
µV/°C
IB
Input Bias Current
10
pA
IOS
Input Offset Current
5
pA
VCM
Input Voltage Range (from V-)
CMRR
PSRR
AVOL
Differential Offset Voltage
Common-Mode Rejection Ratio
Power Supply Rejection Ratio
Large-Signal Voltage Gain
CMRR > 60dB
3.5
4.1
V
0 < VCM < 3.5V
60
87
dB
Supply voltage change of 3V to 5V
60
92
dB
RL = 5kΩ, VOUT = 4.8VPP
65
73
dB
RL = 100kΩ, VOUT = 4.8VPP
80
86
dB
RL = 500kΩ, VOUT = 4.8VPP
89
96
dB
RL = 5kΩ
V+ -50mV
V+ -37mV
V
RL = 500kΩ
V+ -3mV
V+ -1.3mV
V
VOUT
Maximum Output Voltage Swing
VOUT
Minimum Output Voltage Swing
GBW
Gain-Bandwidth Product
PM
Phase Margin
BW
–3dB Bandwidth
SR
Slew Rate
ISC
Short-Circuit Ouptut Current
IS
Supply Current (per Op Amp)
No Load
Channel-to-Channel Crosstalk
Note 6
July 29, 2014
RL = 5kΩ
V- +24mV
V- +40mV
V
RL = 500kΩ
V- +0.7mV
V- +3mV
V
RL = 20kΩ, CL = 2pF, AV = 11
3
MHz
45
°
RL = 1MΩ, CL = 2pF, AV = 1
5
MHz
RL = 1MΩ, CL = 2pF, AV = 1
Positive Slew Rate = 1.5V/µs
4
V/µs
Source
17
23
mA
Sink
18
27
mA
31
-120
5
47
µA
dB
Revision 3.0
Micrel, Inc.
MIC862
Typical Characteristics
July 29, 2014
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Micrel, Inc.
MIC862
Typical Characteristics (Continued)
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Micrel, Inc.
MIC862
Typical Characteristics (Continued)
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Micrel, Inc.
MIC862
Functional Characteristics
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Micrel, Inc.
MIC862
Functional Characteristics (Continued)
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Micrel, Inc.
MIC862
Functional Characteristics (Continued)
July 29, 2014
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Micrel, Inc.
MIC862
Capacitive Load
When driving a large capacitive load, a resistor of 500Ω is
recommended to be connected between the op amp
output and the capacitive load to avoid oscillation.
Application Information
Power Supply Bypassing
Regular supply bypassing techniques are recommended.
A 10μF capacitor in parallel with a 0.1μF capacitor on
both the positive and negative supplies are ideal. For
best performance all bypassing capacitors should be
located as close to the op amp as possible and all
capacitors should be low ESL (equivalent series
inductance), ESR (equivalent series resistance). Surfacemount ceramic capacitors are ideal.
Supply and Loading Resistive Considerations
The MIC862 is intended for single-supply applications
configured with a grounded load. It is not advisable to
operate the MIC862 under either of the following
conditions:
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A grounded load and split supplies (±V)
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A single supply where the load is terminated above
ground.
Under the above conditions, if the load is less than 20kΩ
and the output swing is greater than 1V (peak), there may
be some instability when the output is sinking current.
July 29, 2014
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Micrel, Inc.
MIC862
Package Information(7)
SOT-23-8 (M8)
Note:
7. Package information is correct as of the publication date. For updates and most current information, go to www.micrel.com.
July 29, 2014
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Revision 3.0
Micrel, Inc.
MIC862
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
Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully
indemnify Micrel for any damages resulting from such use or sale.
© 2014 Micrel, Incorporated.
July 29, 2014
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