MIC915
Dual 135MHz Low-Power Op Amp
General Description
Features
The MIC915 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 per op amp.
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Supply voltage range is from ±2.5V to ±9V, allowing the
MIC915 to be used in low-voltage circuits or applications
requiring large dynamic range.
The MIC915 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 packaging
make the MIC915 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 per op amp
10-pin MSOP 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
10-Pin MSOP
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 24, 2014
Revision 2.0
Micrel, Inc.
MIC915
Ordering Information
Part Number
Junction Temperature Range
Package
MIC915YMM
–40°C to +85°C
10-Pin MSOP
Pin Configuration
10-Pin MSOP (MM)
(Top View)
Pin Description
Pin Number
(1)
Pin Name
Pin Function
1
INA−
Inverting input of operational amplifier A.
2
INA+
Noninverting input of operational amplifier A.
3
V+(A)
4
INB−
Positive supply input for operational amplifier A. Connect a 10µF capacitor in parallel with a 0.1µF
capacitor to ground.
Inverting input of operational amplifier B.
5
INB+
Noninverting input of operational amplifier B.
6
V+(B)
7
OUTB
8
V−(B)
9
OUTA
10
V−(A)
Positive supply input for operational amplifier B. Connect a 10µF capacitor in parallel with a 0.1µF
capacitor to ground.
Output of operational amplifier B.
Negative supply input for operational amplifier B. Connect a 10µF capacitor in parallel with a
0.1µF capacitor to ground.
Output of operational amplifier A.
Negative supply input for operational amplifier A. Connect a 10µF capacitor in parallel with a
0.1µF capacitor to ground.
Note:
1. V− pins must be externally shorted together.
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Micrel, Inc.
MIC915
Absolute Maximum Ratings(2)
Operating Ratings(3)
Supply Voltage (VV+ − VV−) ........................................... +20V
(4)
Differential Input Voltage (|VIN+ − VIN−|). ........................ 8V
Input Common-Mode Range (VIN+, VIN−) ...............VV+ to VV−
Lead Temperature (soldering, 5s) ............................ +260°C
Storage Temperature (TS) ........................................ +150°C
(5)
ESD Rating ............................................................... 1.5kV
Supply Voltage (VS) ......................................... ±2.5V to ±9V
Junction Temperature (TJ) .......................... –40°C to +85°C
Package Thermal Resistance
10-Pin MSOP (θJA) ......................................... +160°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
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.
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Micrel, Inc.
MIC915
Electrical Characteristics (±5V) (Continued)
VV+ = +5V; VV− = −5V, VCM = 0V, VOUT = 0V; RL = 10MΩ; TJ = +25°C, bold values indicate –40°C ≤ TJ ≤ +85°C, unless noted.
Symbol
Parameter
Condition
Crosstalk
f = 1MHz
82
Source
72
Sink
25
Short-Circuit Output Current
IGND
Min.
Typ.
2.4
Supply Current per Op Amp
Max.
Units
dB
mA
3.5
4.1
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
Crosstalk
Short-Circuit Output Current
IGND
RL = 1kΩ
5.5
µA
−7.25
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
f = 1MHz
82
dB
Source
90
Sink
32
2.5
Supply Current per Op Amp
September 24, 2014
µV/°C
9
Positive, RL = 2kΩ
VOUT
Min.
3.7
mA
4.3
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Revision 2.0
Micrel, Inc.
MIC915
Test Circuit
PSRR vs. Frequency
CMRR vs. Frequency
Noise Measurement
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MIC915
Typical Characteristics
September 24, 2014
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Revision 2.0
Micrel, Inc.
MIC915
Typical Characteristics (Continued)
September 24, 2014
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Revision 2.0
Micrel, Inc.
MIC915
Typical Characteristics (Continued)
September 24, 2014
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Revision 2.0
Micrel, Inc.
MIC915
Typical Characteristics (Continued)
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Micrel, Inc.
MIC915
Functional Characteristics
September 24, 2014
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Revision 2.0
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MIC915
Functional Characteristics (Continued)
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Micrel, Inc.
MIC915
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 MIC915 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 MIC915 is stable when driving any capacitance (see
the “Gain Bandwidth and Phase Margin vs. Load
Capacitance” graph in the Typical Operating
Characteristics section) making it ideal for driving long
coaxial cables or other high-capacitance loads.
Note: Both V− pins must be externally shorted together.
Thermal Considerations
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 Operating 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 (
