Micrel MIC910 135mhz, low-power sot-23-5 op amp Datasheet

MIC910
135MHz, Low-Power SOT-23-5 Op Amp
General Description
Features
The MIC910 is a high-speed, unity-gain stable operational
amplifier. It provides a gain-bandwidth product of 135MHz
with a very low, 2.4mA supply current, and features the
tiny SOT-23-5 package.
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Supply voltage range is from ±2.5V to ±9V, allowing the
MIC910 to be used in low-voltage circuits or applications
requiring large dynamic range.
The MIC910 is stable driving any capacitive load and
achieves excellent PSRR, making it much easier to use
than most conventional high-speed devices. Low supply
voltage, low power consumption, and small packing make
the MIC910 ideal for portable equipment. The ability to
drive capacitive loads also makes it possible to drive long
coaxial cables.
135MHz gain bandwidth product
2.4mA supply current
Unconditionally unity-gain stable
SOT-23-5 package
270V/µs slew rate
Drives any capacitive load
Applications
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Video
Imaging
Ultrasound
Portable equipment
Line drivers
Datasheets and support documentation are available on
Micrel’s web site at: www.micrel.com.
Functional Pinout
SOT-23-5
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 19, 2014
Revision 2.0
Micrel, Inc.
MIC910
Ordering Information
Part Number(1)
Marking
Junction Temperature Range
Package
A21
–40°C to +85°C
SOT-23-5
MIC910YM5
Note:
1. Underbar (
) may not be to scale.
Pin Configuration
SOT-23-5 (M5)
(Top View)
Pin Description
Pin Number
Pin Name
1
OUT
2
V+
Positive Supply (Input): Connect a 10µF capacitor in parallel with a 0.1µF capacitor to ground.
3
IN+
Noninverting Input.
4
IN−
Inverting Input.
5
V−
Negative Supply (Input): Connect a 10µF capacitor in parallel with a 0.1µF capacitor to ground.
September 19, 2014
Pin Function
Output: Amplifier output.
2
Revision 2.0
Micrel, Inc.
MIC910
Absolute Maximum Ratings(2)
Operating Ratings(3)
Supply Voltage (VV+ − VV−) ........................................... +20V
Differential Input Voltage (|VIN+ − VIN−|). ........................ 8V(4)
Input Common-Mode Range (VIN+, VIN−) ...............VV+ to VV−
Lead Temperature (soldering, 5s) ............................ +260°C
Storage Temperature (TS) ........................................ +150°C
ESD Rating(5) ............................................................... 1.5kV
Supply Voltage (VS)......................................... ±2.5V to ±9V
Junction Temperature (TJ) .......................... –40°C to +85°C
Package Thermal Resistance
SOT-23-5 (θJA) ............................................... +260°C/W
Electrical Characteristics (±5V)
VV+ = +5V; VV− = −5V, VCM = 0V, VOUT = 0V; RL = 10MΩ; TJ = +25°C, bold values indicate –40°C ≤ TJ ≤ +85°C, unless noted.
Symbol
VOS
Parameter
Condition
Min.
Typ.
Max.
Units
Input Offset Voltage
1
15
mV
Input Offset Voltage Temperature Coefficient
4
3.5
IB
Input Bias Current
IOS
Input Offset Current
VCM
Input Common-Mode Range
CMRR > 60dB
CMRR
Common-Mode Rejection Ratio
−2.5V < VCM < +2.5V
PSRR
Power Supply Rejection Ratio
±5V < VS < ±9V
AVOL
Large-Signal Voltage Gain
5.5
µA
9
0.05
−3.25
70
74
+3.25
V
dB
81
dB
70
71
RL = 200Ω, VOUT = ±2V
60
71
+3.3
3.5
dB
+3.0
−3.5
Negative, RL = 2kΩ
Positive, RL = 200Ω
µA
60
60
Maximum Output Voltage Swing
3
90
RL = 2kΩ, VOUT = ±2V
Positive, RL = 2kΩ
VOUT
µV/°C
−3.3
−3.0
+3.0
V
3.2
+2.75
Negative, RL = 200Ω
−2.8
−2.45
−2.2
GBW
Gain Bandwidth Product
RL = 1kΩ
125
MHz
BW
−3dB Bandwidth
AV = 1, RL = 100Ω
192
MHz
SR
Slew Rate
230
V/µs
Short-Circuit Output Current
IGND
Source
72
Sink
25
2.4
Supply Current
3.5
mA
4.1
Notes:
2. Exceeding the absolute maximum ratings may damage the device.
3. The device is not guaranteed to function outside its operating ratings.
4. Exceeding the maximum differential input voltage will damage the input stage and degrade performance as input bias current is likely to increase.
5. Devices are ESD sensitive. Handling precautions are recommended. Human body model, 1.5kΩ in series with 100pF.
September 19, 2014
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Revision 2.0
Micrel, Inc.
MIC910
Electrical Characteristics (±9V)
VV+ = +9V; VV− = −9V, VCM = 0V, VOUT = 0V; RL = 10MΩ; TJ = +25°C, bold values indicate –40°C ≤ TJ ≤ +85°C, unless noted.
Symbol
VOS
Parameter
Condition
Typ.
Max.
Units
Input Offset Voltage
1
15
mV
Input Offset Voltage Temperature Coefficient
4
3.5
IB
Input Bias Current
IOS
Input Offset Current
VCM
Input Common-Mode Range
CMRR > 60dB
CMRR
Common-Mode Rejection Ratio
−6.5V < VCM < +6.5V
AVOL
Large-Signal Voltage Gain
RL = 2kΩ, VOUT = ±6V
0.05
Maximum Output Voltage Swing
Negative, RL = 2kΩ
GBW
Gain Bandwidth Product
SR
Slew Rate
Short-Circuit Output Current
IGND
RL = 1kΩ
−7.25
5.5
µA
70
3
µA
+7.25
V
98
dB
60
60
73
+7.2
7.4
dB
+6.8
−7.4
−7.2
V
−6.8
135
MHz
270
V/µs
Source
90
Sink
32
2.5
Supply Current
September 19, 2014
µV/°C
9
Positive, RL = 2kΩ
VOUT
Min.
3.7
mA
4.3
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Micrel, Inc.
MIC910
Test Circuit
PSRR vs. Frequency
CMRR vs. Frequency
Noise Measurement
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MIC910
Typical Characteristics
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MIC910
Typical Characteristics (Continued)
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MIC910
Typical Characteristics (Continued)
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MIC910
Typical Characteristics (Continued)
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MIC910
Functional Characteristics
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MIC910
Functional Characteristics (Continued)
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MIC910
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 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.
The MIC910 is a high-speed, voltage-feedback
operational amplifier featuring very low supply current
and excellent stability. This device is unity gain stable
and capable of driving high capacitance loads.
Driving High Capacitance
The MIC910 is stable when driving any capacitance (see
the “Gain Bandwidth and Phase Margin vs. Load
Capacitance” graph in the Typical Characteristics
section) making it ideal for driving long coaxial cables or
other high-capacitance loads.
Thermal Considerations
The SOT-23-5 package, like all small packages, has a
high thermal resistance. It is important to ensure the IC
does not exceed the maximum operating junction (die)
temperature of 85°C. The part can be operated up to the
absolute maximum temperature rating of 125°C, but
between 85°C and 125°C performance will degrade, in
particular CMRR will reduce.
Phase margin remains constant as load capacitance is
increased. Most high-speed op amps are only able to
drive limited capacitance.
Note: increasing load capacitance does reduce the speed
of the device (see the “Gain Bandwidth and Phase
Margin vs. Load” in the Typical Characteristics section).
In applications where the load capacitance reduces the
speed of the op amp to an unacceptable level, the effect
of the load capacitance can be reduced by adding a small
resistor (<100Ω) in series with the output.
A MIC910 with no load, dissipates power equal to the
quiescent supply current × the supply voltage (Equation
1):
Feedback Resistor Selection
Conventional op amp gain configurations and resistor
selection apply; the MIC910 is not a current feedback
device. Resistor values in the range of 1kΩ to 10kΩ are
recommended.
PD(NO LOAD) = (VV+ − VV−)IS
When a load is added, the additional power is dissipated
in the output stage of the op amp. The power dissipated
in the device is a function of supply voltage, output
voltage and output current (Equation 2).
Layout Considerations
All high-speed devices require careful PCB layout. The
high stability and high PSRR of the MIC910 make it
easier to use than most other op amps, but the following
guidelines should be observed:
PD(OUTPUT STAGE) = (VV+ − VOUT)IOUT
• Capacitance, particularly on the two inputs pins will
degrade performance.
• Avoid large copper traces to the inputs.
• Keep the output signal away from the inputs and use a
ground plane.
Eq. 2
Total Power Dissipation = PD(NO LOAD) + PD(OUTPUT STAGE)
Ensure the total power dissipated in the device is no
greater than the thermal capacity of the package. The
SOT23-5 package has a thermal resistance of 260°C/W
(Equation 3).
It is important to ensure adequate supply bypassing
capacitors are located close to the device
Maximum Allowable Power Dissipation =
TJ(MAX ) − TA(MAX )
260°C / W
September 19, 2014
Eq. 1
12
Eq. 3
Revision 2.0
Micrel, Inc.
MIC910
Package Information and Recommended Landing Pattern(6)
SOT-23-5 (M5)
Note:
6. Package information is correct as of the publication date. For updates and most current information, go to www.micrel.com.
September 19, 2014
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Revision 2.0
Micrel, Inc.
MIC910
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, Inc. is a leading global manufacturer of IC solutions for the worldwide high performance linear and power, LAN, and timing & communications
markets. The Company’s products include advanced mixed-signal, analog & power semiconductors; high-performance communication, clock
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information is not intended as a warranty and Micrel does not assume responsibility for its use. Micrel reserves the right to change circuitry,
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