Page 1
MIC913 Micrel
MIC913
350MHz Low-Power SOT-23-5 Op Amp
General Description
The MIC913 is a high-speed, operational amplifier. It provides a gain-bandwidth product of 350MHz with a very low,
4.2mA supply current, and features the tiny SOT-23-5 package.
Supply voltage range is from ±2.5V to ±9V, allowing the
MIC913 to be used in low-voltage circuits or applications
requiring large dynamic range.
The MIC913 requires a minimum gain of +2 or –1 but is stable
driving any capacitative load and achieves excellent PSRR,
making it much easier to use than most conventional highspeed devices. Low supply voltage, low power consumption,
and small packing make the MIC913 ideal for portable
equipment. The ability to drive capacitative loads also makes
it possible to drive long coaxial cables.
Features
• 350MHz gain bandwidth product
• 4.2mA supply current
• SOT-23-5 package
• 500V/µs slew rate
• Drives any capacitive load
• Low distortion
• Stable with gain of +2 or –1
Applications
• Video
• Imaging
• Ultrasound
• Portable equipment
• Line drivers
• XDSL
Ordering Information
Part Number Junction Temp. Range Package
MIC913BM5 –40°C to +85°C SOT-23-5
Pin Configuration
IN+
OUTV+
13
2
Part
Identification
A24
45
IN–
V–
SOT-23-5
Pin Description
Pin Number Pin Name Pin Function
1 OUT Output: Amplifier Output
2 V+ Positive Supply (Input)
3 IN+ Noninverting Input
4 IN– Inverting Input
5 V– Negative Supply (Input)
Functional Pinout
IN+
45
IN–
OUTV+
13
2
V–
SOT-23-5
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com
August 2000 1 MIC913
Page 2
MIC913 Micrel
Absolute Maximum Ratings (Note 1)
Supply Voltage (V
Differential Input Voltage (V
Input Common-Mode Range (V
– VV–) ........................................... 20V
V+
IN+
– V
IN+
) .......... 4V, Note 3
IN–
, V
) .......... VV+ to V
IN–
Operating Ratings (Note 2)
Supply Voltage (V
Junction Temperature (T
Package Thermal Resistance ............................... 260°C/W
V–
) ....................................... ±2.5V to ±9V
S
) ......................... –40°C to +85°C
J
Lead Temperature (soldering, 5 sec.) ....................... 260°C
Storage Temperature (T
) ........................................ 150°C
S
ESD Rating, Note 4 ................................................... 1.5kV
Electrical Characteristics (±5V)
VV+ = +5V, VV– = –5V, VCM = 0V, V
Symbol Parameter Condition Min Typ Max Units
V
OS
V
OS
Input Offset Voltage 1 16 mV
Input Offset Voltage 4 µV/°C
Temperature Coefficient
I
B
I
OS
V
CM
Input Bias Current 5.5 9 µA
Input Offset Current 0.05 3 µA
Input Common-Mode Range CMRR > 60dB –3.25 +3.25 V
CMRR Common-Mode Rejection Ratio –2.0V < VCM < +2.0V 70 85 dB
PSRR Power Supply Rejection Ratio ±5V < V
A
V
VOL
OUT
Large-Signal Voltage Gain RL = 2k, V
Maximum Output Voltage Swing positive, RL = 2kΩ +3.3 3.5 V
GBW Gain-Bandwidth Product f = 80MHz, RL = 1kΩ 300 MHz
BW –3dB Bandwidth AV = 2, RL = 150Ω 213 MHz
THD Total Harmonic Distortion R
SR Slew Rate 350 V/µs
I
GND
I
GND
Short-Circuit Output Current source 72 mA
Supply Current 4.1 4.9 mA
= 0V; RL = 10MΩ; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +85°C; unless noted.
OUT
< ±9V 70 81 dB
S
OUT
RL = 200Ω, V
= ±2V 60 71 dB
= ±2V 60 71 dB
OUT
65 dB
+3.0 V
negative, R
positive, R
negative, R
= 2kΩ –3.5 –3.3 V
L
= 200Ω +3.0 3.2 V
L
= 200Ω –2.8 –2.45 V
L
+2.75 V
AV = 4 or AV = –3, RL = 400Ω- 104 MHz
= RG = 470Ω, AV = 2, V
F
= 2Vpp, 0.01 %
OUT
f = 2MHz
AV = 2, V
= 2Vpp, f = 2MHz, RL = 500Ω 0.05 %
OUT
sink 25 mA
15 µA
–3.0 V
–2.2 V
5.4 mA
MIC913 2 August 2000
Page 3
MIC913 Micrel
Electrical Characteristics
VV+ = +9V, VV– = –9V, VCM = 0V, V
Symbol Parameter Condition Min Typ Max Units
V
OS
V
OS
Input Offset Voltage 1 16 mV
Input Offset Voltage 4 µV/°C
Temperature Coefficient
I
B
I
OS
V
CM
Input Bias Current 5.5 9 µA
Input Offset Current 0.05 3 µA
Input Common-Mode Range CMRR > 60dB –7.25 +7.25 V
CMRR Common-Mode Rejection Ratio –6.0V < VCM < 6.0V 70 88 dB
A
V
VOL
OUT
Large-Signal Voltage Gain RL = 2kΩ, V
Maximum Output Voltage Swing positive, RL = 2kΩ +7.2 +7.4 V
GBW Gain-Bandwidth Product RL = 1kΩ, f = 80MHz 350 MHz
BW –3dB Bandwidth AV = 2 or AV = –1, RL = 150Ω 240 MHz
THD Total Harmonic Distortion R
SR Slew Rate 500 V/µs
I
GND
I
GND
Short-Circuit Output Current source 90 mA
Supply Current 4.2 5.0 mA
= 0V; RL = 10MΩ; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +85°C; unless noted
OUT
= ±6V 60 73 dB
OUT
+6.8 V
negative, R
= 2kΩ –7.4 –7.2 V
L
AV = 4 or AV = –3 140 MHz
= RG = 470Ω, AV = 2, V
F
= 2Vpp, 0.01 %
OUT
f = 2MHz
AV = 2, V
= 2Vpp, f = 2MHz, RL = 500Ω 0.04 %
OUT
sink 32 mA
15 µA
–6.8 V
5.5 mA
Note 1. Exceeding the absolute maximum rating may damage the device.
Note 2. The device is not guaranteed to function outside its operating rating.
Note 3. Exceeding the maximum differential input voltage will damage the input stage and degrade performance (in particular, input bias current is
Note 4. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.
likely to increase).
August 2000 3 MIC913
Page 4
MIC913 Micrel
c
r
Test Circuits
V
CC
10µF
V
CC
Input
BNC
50Ω
0.1µF
0.1µF
R2
5k
10µF
Input
10k
4
MIC913
3
10k
10k
50Ω
BNC
0.1µF
50Ω
All resistors:
1% metal film
PSRR vs. Frequency
2k
2
5
BNC
1
Output
Input
BNC
R1 5k
R7c 2k
R7b 200Ω
R7a 100Ω
4
MIC913
3
0.1µF
2
5
0.1µF
1
BNC
Output
R6
5k
R3
R4
250Ω
R5
5k
++
5
R7
200k
0.1µF
10µF
V
EE
All resistors 1%
R2R1R2 R R4
VV
=++
OUT ERROR
1
10µF
V
EE
CMRR vs. Frequency
100pF
V
CC
R1
20Ω
R5
20Ω
10pF
R3 27k
S1
S2
R4 27k
R2 4k
4
MIC913
3
10µF
0.1µF
2
5
0.1µF
1
BNC
To
Dynami
Analyze
10pF
10µF
V
EE
Noise Measurement
MIC913 4 August 2000
Page 5
MIC913 Micrel
-1.5
-1.0
-0.5
0.0
0.5
1.0
-40 -20 0 20 40 60 80 100
OFFSET VOLTAGE (mV)
TEMPERATURE (°C)
Offset Voltage
vs. Temperature
V
SUPPLY
= ±5V
V
SUPPLY
= ±9V
-2
0
2
4
6
8
10
-8 -6 -4 -2 0 2 4 6 8
OFFSET VOLTGE (mV)
COMMON-MODE VOLTAGE (V)
0
1
2
3
4
5
6
7
8
9
10
0 20406080100
OUTPUT VOLTAGE (V)
OUTPUT CURRENT (mA)
Electrical Characteristics
Supply Current
vs. Supply Voltage
5.0
4.5
4.0
3.5
SUPPLY CURRENT (mA)
3.0
2345678910
SUPPLY VOLTAGE (±V)
+85°C
+25°C
-40°C
Bias Current
vs. Temperature
10
8
6
V
4
SUPPLY
BIAS CURRENT (µA)
2
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
= ±5V
V
SUPPLY
= ±9V
Supply Current
vs. Temperature
5.0
V
= ±9V
SUPPLY
4.5
V
4.0
SUPPLY CURRENT (mA)
3.5
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
SUPPLY
= ±5V
Offset Voltage
vs. Common-Mode Voltage
V
= ±9V
+85°C
+25°C
SUPPLY
-40°C
Offset Voltage
vs. Common-Mode Voltage
10
9
8
7
6
5
4
3
2
-40°C
1
OFFSET VOLTGE (mV)
0
-1
-5-4-3-2-1012345
COMMON-MODE VOLTAGE (V)
+85°C
+25°C
V
SUPPLY
= ±5V
OUTPUT CURRENT (mA)
-10
-15
-20
August 2000 5 MIC913
-25
-30
OUTPUT CURRENT (mA)
-35
Short-Circuit Current
vs. Temperature
90
85
V
= ±9V
SUPPLY
80
75
70
65
60
-40 -20 0 20 40 60 80 100
SOURCING
CURRENT
V
= ±5V
SUPPLY
TEMPERATURE (°C)
Short-Circuit Current
vs. Supply Voltage
-40°C
+85°C
SINKING
CURRENT
2345678910
SUPPLY VOLTAGE (±V)
+25°C
Short-Circuit Current
vs. Temperature
-20
V
= ±5V
SUPPLY
-25
SINKING
-30
-35
OUTPUT CURRENT (mA)
-40
-40 -20 0 20 40 60 80 100
CURRENT
V
= ±9V
SUPPLY
TEMPERATURE (°C)
Output Voltage
vs. Output Current
V
= ±9V
SUPPLY
+85°C
SOURCING
CURRENT
+25°C
-40°C
Short-Circuit Current
vs. Supply Voltage
100
80
60
40
OUTPUT CURRENT (mA)
20
2345678910
SUPPLY VOLTAGE (±V)
+85°C
SOURCING
CURRENT
-40°C
+25°C
Output Voltage
vs. Output Current
0
-1
-2
-3
-4
-5
-6
-7
-8
OUTPUT VOLTAGE (V)
-9
-10
-35 -30 -25 -20 -15 -10 -5 0
-40°C
+25°C
V
SUPPLY
OUTPUT CURRENT (mA)
+85°C
= ±9V
SINKING
CURRENT
Page 6
MIC913 Micrel
(
)
(
)
(
)
Output Voltage
vs. Output Current
4.0
+85°C
3.5
3.0
-40°C
2.5
2.0
1.5
1.0
OUTPUT VOLTAGE (V)
SOURCING
0.5
CURRENT
0
0 20406080
OUTPUT CURRENT (mA)
+25°C
V
SUPPLY
= ±5V
Gain Bandwidth and
Phase Margin vs. Load
200
V
SUPPLY
Phase
Margin
= ±9V
Gain
Bandwidth
160
120
80
40
GAIN BANDWIDTH (MHz)
0
0 200 400 600 800 1000
CAPACITIVE LOAD (pF)
50
40
°
30
20
PHASE MARGIN
10
0
Output Voltage
vs. Output Current
0
-0.5
-1.0
-1.5
-2.0
-2.5
-3.0
OUTPUT VOLTAGE (V)
-3.5
-4.0
+85°C
V
SUPPLY
-30 -25 -20 -15 -10 -5 0
OUTPUT CURRENT (mA)
-40°C
= ±5V
CURRENT
+25°C
SINKING
Gain Bandwidth and
Phase Margin vs. Supply Voltage
225
200
175
150
125
GAIN BANDWIDTH (MHz)
100
2345678910
SUPPLY VOLTAGE (±V)
Phase
Margin
Gain
Bandwidth
20
15
°
10
5
PHASE MARGIN
0
-5
Gain Bandwidth and
Phase Margin vs. Load
200
160
120
80
40
GAIN BANDWIDTH (MHz)
0
0 200 400 600 800 1000
CAPACITIVE LOAD (pF)
Phase
Margin
V
SUPPLY
Bandwidth
= ±5V
Gain
Common-Mode
120
100
CMRR (dB)
Rejection Ratio
80
60
40
V
= ±5V
20
0
SUPPLY
1x1021x1031x1041x1051x1061x10
FREQUENCY (Hz)
50
40
°
30
20
PHASE MARGIN
10
0
7
Positive Power Supply
100
+PSRR (dB)
Rejection Ratio
80
60
40
20
0
V
= ±5V
SUPPLY
1x1021x1031x1041x1051x1061x10
FREQUENCY (Hz)
Positive Power Supply
100
+PSRR (dB)
Rejection Ratio
80
60
40
20
0
V
= ±9V
SUPPLY
1x1021x1031x1041x1051x1061x10
FREQUENCY (Hz)
Negative Power Supply
100
–PSRR (dB)
7
Rejection Ratio
80
60
40
20
0
V
= ±5V
SUPPLY
1x1021x1031x1041x1051x1061x10
FREQUENCY (Hz)
120
100
CMRR (dB)
7
Negative Power Supply
100
–PSRR (dB)
7
Rejection Ratio
80
60
40
20
0
V
= ±9V
SUPPLY
1x1021x1031x1041x1051x1061x10
FREQUENCY (Hz)
-10
GAIN (dB)
-20
-30
-40
7
-50
Common-Mode
Rejection Ratio
80
60
40
V
= ±9V
20
0
SUPPLY
1x1021x1031x1041x1051x1061x10
FREQUENCY (Hz)
Closed-Loop
Frequency Response
50
RL = 150Ω
40
GAIN = -1
30
20
10
0
1 10 100 500
FREQUENCY (MHz)
±2.5V
±9V
±5V
7
MIC913 6 August 2000
Page 7
MIC913 Micrel
-20
-10
0
10
20
30
-360
-270
-180
-90
0
90
1 10 100 400
GAIN (dB)
PHASE (°)
FREQUENCY (MHz)
Closed-Loop
Frequency Response
V
SUPPLY
= ±9V
A
V
= 4
GAIN
PHASE
-50
-40
-30
-20
-10
0
10
20
30
40
50
1 10 100 500
GAIN (dB)
FREQUENCY (MHz)
-50
-40
-30
-20
-10
0
10
20
30
40
50
1 10 100 500
GAIN (dB)
FREQUENCY (MHz)
0
100
200
300
400
0 200 400 600 800 1000
SLEW RATE (V/µs)
LOAD CAPACITANCE (pF)
Closed-Loop
Frequency Response
30
20
10
0
GAIN (dB)
-10
-20
1 10 100 400
PHASE
GAIN
V
= ±2.5V
SUPPLY
A
= 4
V
FREQUENCY (MHz)
Open-Loop
Frequency Response
50
40
30
20
10
1000pF
0
471pF
-10
GAIN (dB)
-20
-30
-40
-50
200pF
V
SUPPLY
R
= 1k
L
1 10 100 500
FREQUENCY (MHz)
100pF
= ±5V
50pF
0pF
90
0
-90
-180
-270
-360
Closed-Loop
Frequency Response
30
20
10
V
0
SUPPLY
PHASE (°)
GAIN (dB)
A
= 4
V
-10
-20
1 10 100 400
PHASE
GAIN
= ±5V
FREQUENCY (MHz)
Open-Loop
Frequency Response
100pF
1000pF
471pF
200pF
V
= ±9V
SUPPLY
R
= 1k
L
50pF
0pF
90
0
-90
-180
-270
-360
PHASE (°)
Open-Loop
Frequency Response
50
40
30
20
10
0
-10
GAIN (dB)
-20
-30
V
-40
-50
1 10 100 500
PHASE
GAIN
No Load
RL = 100Ω
= ±5V
SUPPLY
FREQUENCY (MHz)
200
150
100
50
0
-50
-100
-150
-200
-250
-300
PHASE (°)
August 2000 7 MIC913
RF
Open-Loop
Frequency Response
50
40
30
20
GAIN
10
0
-10
GAIN (dB)
-20
-30
V
-40
SUPPLY
-50
1 10 100 500
FREQUENCY (MHz)
PHASE
No Load
RL = 100Ω
= ±9V
Closed-Loop
Frequency Response
Test Circuit
V
CC
10µF
0.1µF
MIC913
50Ω
10µF
V
EE
FET probe
C
L
200
150
100
50
0
-50
-100
-150
-200
-250
-300
Closed-Loop
Frequency Response
V
= ±5V
SUPPLY
PHASE (°)
CL = 1000pF
CL = 470pF
CL = 100pF
RL = 470Ω
GAIN = -1
CL = 1.7pF
50
40
30
20
10
0
-10
GAIN (dB)
-20
-30
-40
-50
Positive
Slew Rate
VCC = ±5V
400
300
200
100
SLEW RATE (V/µs)
Closed-Loop
Frequency Response
V
= ±9V
SUPPLY
CL = 1000pF
CL = 470pF
CL = 100pF
1 10 100 500
FREQUENCY (MHz)
RL = 470Ω
GAIN = -1
CL = 1.7pF
Negative
Slew Rate
VCC = ±5V
0
0 200 400 600 800 1000
LOAD CAPACITANCE (pF)
Page 8
MIC913 Micrel
Positive
Slew Rate
600
500
400
300
200
SLEW RATE (V/µs)
100
0
0 200 400 600 800 1000
LOAD CAPACITANCE (pF)
VCC = ±9V
Negative
600
500
400
300
200
SLEW RATE (V/µs)
100
0
0 200 400 600 800 1000
Slew Rate
VCC = ±9V
LOAD CAPACITANCE (pF)
MIC913 8 August 2000
Page 9
MIC913 Micrel
Functional Characteristics
VCC = ±5V
= 2
A
V
= 1.7pF
C
L
R1 = R2 = 470Ω
OUTPUT INPUT
Small-Signal
Pulse Response
Small-Signal
Pulse Response
VCC = ±9V
= 1
A
V
= 1.7pF
C
L
R1 = R2 = 470Ω
OUTPUT INPUT
Small-Signal
Pulse Response
Small-Signal
Pulse Response
VCC = ±5V
= 2
A
V
= 100pF
C
L
R1 = R2 = 470Ω
OUTPUT INPUT
VCC = ±5V
= 1
A
V
= 1000pF
C
L
R1 = R2 = 470Ω
OUTPUT INPUT
Small-Signal
Pulse Response
VCC = ±9V
= 1
A
V
= 100pF
C
L
R1 = R2 = 470Ω
OUTPUT INPUT
VCC = ±9V
= 1
A
V
= 1000pF
C
L
R1 = R2 = 470Ω
OUTPUT INPUT
Small-Signal
Pulse Response
August 2000 9 MIC913
Page 10
MIC913 Micrel
OUTPUT
Large-Signal
Pulse Response
Large-Signal
Pulse Response
VCC = ±5V
= –1
A
V
= 1.7pF
C
L
VCC = ±5V
= –1
A
V
= 100pF
C
L
OUTPUT
Large-Signal
Pulse Response
Large-Signal
Pulse Response
VCC = ±9V
= –1
A
V
= 1.7pF
C
L
VCC = ±9V
= –1
A
V
= 100pF
C
L
OUTPUT
OUTPUT
Large-Signal
Pulse Response
VCC = ±5V
= –1
A
V
= 1000pF
C
L
OUTPUT
OUTPUT
Large-Signal
Pulse Response
VCC = ±9V
= –1
A
V
= 1000pF
C
L
MIC913 10 August 2000
Page 11
MIC913 Micrel
PVVI
DVV
S
(no load)
=−
()
+−
Total Power Dissipation P P
DDt
=+
(no load) (outpu stage)
Applications Information
The MIC913 is a high-speed, voltage-feedback operational
amplifier featuring very low supply current. The MIC913 is not
unity-gain stable, it requires a minimum gain of +2 or –1 to
ensure stability. The device is however stable even when
driving high capacitance loads.
Driving High Capacitance
The MIC913 is stable when driving any capacitance (see
“Typical Characteristics: Gain Bandwidth and Phase Margin
vs. Load Capacitance”) making it ideal for driving long coaxial
cables or other high-capacitance loads.
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 “Typical Characteristics: Gain Bandwidth and Phase Margin vs.
Load”). 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.
Feedback Resistor Selection
Conventional op amp gain configurations and resistor selection apply, the MIC913 is NOT a current feedback device.
Resistor values in the range of 1k to 10k are recommended.
Layout Considerations
All high speed devices require careful PCB layout. The high
stability and high PSRR of the MIC913 make this op amp
easier to use than most, but the following guidelines should
be observed: 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.
It is important to ensure adequate supply bypassing capacitors are located close to the device.
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). Surface-mount ceramic capacitors are ideal.
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.
A MIC913 with no load, dissipates power equal to the quiescent supply current * supply voltage
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.
PVVI
DV
(output stage)
=−
()
+
OUT OUT
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.
Max Allowable Power Dissipation
. =
TT
−
JA
(max) (max)
260W
August 2000 11 MIC913
Page 12
MIC913 Micrel
Package Information
1.90 (0.075) REF
0.95 (0.037) REF
3.02 (0.119)
2.80 (0.110)
0.50 (0.020)
0.35 (0.014)
1.75 (0.069)
1.50 (0.059)
1.30 (0.051)
0.90 (0.035)
0.15 (0.006)
0.00 (0.000)
SOT-23-5 (M5)
3.00 (0.118)
2.60 (0.102)
10°
0°
DIMENSIONS:
MM (INCH)
0.20 (0.008)
0.09 (0.004)
0.60 (0.024)
0.10 (0.004)
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other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel Inc.
© 2000 Micrel Incorporated
MIC913 12 August 2000
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