MIC920
Micrel, Inc.
MIC920
80MHz Low-Power SC-70 Op Amp
General Description
The MIC920 is a high-speed operational amplifier with a
gain-bandwidth product of 80MHz. The part is unity gain
stable. It has a very low 550µA supply current, and features
the SC-70 package.
Supply voltage range is from ±2.5V to ±9V, allowing the
MIC920 to be used in low-voltage circuits or applications
requiring large dynamic range.
The MIC920 is stable driving any capacitative load and
achieves excellent PSRR and CMRR, making it much easier
to use than most conventional high-speed devices. Low
supply voltage, low power consumption, and small packing
make the MIC920 ideal for portable equipment. The ability
to drive capacitative loads also makes it possible to drive
long coaxial cables.
Features
•
•
•
•
•
•
•
80MHz gain bandwidth product
115MHz –3dB bandwidth
550µA supply current
SC-70 or SOT-23-5 packages
3000V/µs slew rate
Drives any capacitive load
Unity gain stable
Applications
•
•
•
•
•
Video
Imaging
Ultrasound
Portable equipment
Line drivers
Ordering Information
Part Number
Standard
MIC920BM5
MIC920BC5
Marking
A37
A37
MIC920YC5
A37
Pb-Free
Marking
Ambient Temperature
–40ºC to +85ºC
–40ºC to +85ºC
Package
SOT-23-5*
SC-70-5
* Contact factory for availability of SOT-23-5 package.
Note: Underbar marking may not be to scale.
Pin Configuration
IN– V– IN+
3
Functional Pinout
Part
Identification
IN–
3
V– IN+
2
1
2
1
A37
4
5
4
5
OUT
V+
OUT
V+
SOT-23-5 or SC-70
SOT-23-5 or SC-70
Pin Description
Pin Number
1
2
3
4
5
Pin Name
IN+
V–
IN–
OUT
V+
Pin Function
Noninverting Input
Negative Supply (Input)
Inverting Input
Output: Amplifier Output
Positive Supply (Input)
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
March 2006
1
MIC920
MIC920
Micrel, Inc.
Absolute Maximum Ratings
(Note 1)
Supply Voltage (V
V+
– V
V–
) ........................................... 20V
Differentail Input Voltage (V
IN+
– V
IN–
)
........... 4V,
Note 3
Input Common-Mode Range (V
IN+
, V
IN–
) ............V
V+
to V
V–
Lead Temperature (soldering, 5 sec.) ........................ 260°C
Storage Temperature (T
S
) ......................................... 150°C
ESD Rating,
Note 4
................................................... 1.5kV
Operating Ratings
(Note 2)
Supply Voltage (V
S
) .........................................±2.5V to ±9V
Junction Temperature (T
J
) .......................... –40°C to +85°C
Package Thermal Resistance..............................................
SOT-23-5 ........................................................... 260°C/W
SC-70-5 ............................................................. 450°C/W
Electrical Characteristics (±5V)
Symbol
V
OS
V
OS
I
B
I
OS
V+ = +5V, V– = –5V, V
CM
= 0V, R
L
= 10MΩ; T
J
= 25°C,
bold
values indicate –40°C ≤ T
J
≤ +85°C; unless noted.
Parameter
Condition
Min
Input Offset Voltage
V
OS
Temperature Coefficient
Input Bias Current
Input Offset Current
Input Common-Mode Range
Common-Mode Rejection Ratio
Power Supply Rejection Ratio
Large-Signal Voltage Gain
Maximum Output Voltage Swing
CMRR > 72dB
±3.5V < V
S
< ±9V
–2.5V < V
CM
< +2.5V
R
L
= 2k, V
OUT
= ±2V
positive, R
L
= 2kΩ
–3.25
75
95
65
+3.0
+1.5
85
104
82
85
3.6
–3.6
3.0
–2.5
67
32
100
1350
45
20
63
45
0.55
11
0.7
0.80
–1.0
–3.0
Typ
0.43
1
0.26
0.04
0.6
0.3
+3.25
Max
5
Units
mV
µV/°C
µA
µA
V
dB
dB
dB
dB
V
V
V
V
MHz
°
MHz
V/µs
mA
mA
mA
V/√Hz
A/√Hz
V
CM
CMRR
PSRR
A
VOL
V
OUT
R
L
= 100Ω, V
OUT
= ±1V
negative, R
L
= 2kΩ
positive, R
L
= 200Ω
GBW
PM
BW
SR
I
SC
I
S
Unity Gain-Bandwidth Product
Phase Margin
–3dB Bandwidth
Slew Rate
Short-Circuit Output Current
Supply Current
Input Voltage Noise
Input Current Noise
C
L
= 1.7pF
negative, R
L
= 200Ω,
Note 5
C=1.7pF, Gain=1, V
OUT
=5V, peak to peak,
positive SR = 1190V/µs
source
sink
No Load
f = 10kHz
f = 10kHz
Av = 1, R
L
= 1kΩ, C
L
= 1.7pF
Electrical Characteristics
Symbol
V
OS
V
OS
I
B
V+ = +9V, V– = –9V, V
CM
= 0V, R
L
= 10MΩ; T
J
= 25°C,
bold
values indicate –40°C ≤ T
J
≤ +85°C; unless noted
Parameter
Condition
Min
Input Offset Voltage
Input Offset Voltage
Temperature Coefficient
Input Bias Current
Input Offset Current
Input Common-Mode Range
Common-Mode Rejection Ratio
Power Supply Rejection Ratio
CMRR > 75dB
±3.5V < V
S
< ±9V
–6.5V < V
CM
< +6.5V
–7.25
60
95
91
104
Typ
0.3
1
0.23
0.04
0.60
0.3
+7.25
Max
5
Units
mV
µV/°C
µA
µA
V
dB
dB
I
OS
V
CM
CMRR
PSRR
MIC920
2
March 2006
MIC920
Symbol
A
VOL
V
OUT
GBW
PM
BW
SR
I
SC
I
S
Parameter
Large-Signal Voltage Gain
Maximum Output Voltage Swing
Unity Gain-Bandwidth Product
Phase Margin
–3dB Bandwidth
Slew Rate
Short-Circuit Output Current
Supply Current
Input Voltage Noise
Input Current Noise
Note 1.
Note 2.
Note 3.
Note 4.
Note 5.
Micrel, Inc.
Condition
R
L
= 2k, V
OUT
= ±2V
positive, R
L
= 2kΩ
R
L
= 100Ω, V
OUT
= ±1V
Min
75
6.5
Typ
84
93
7.5
–7.5
80
30
115
3000
50
30
65
50
0.55
10
0.8
0.8
–6.2
Max
Units
dB
dB
V
V
MHz
°
MHz
V/µs
mA
mA
mA
V/√Hz
A/√Hz
C
L
= 1.7pF
negative, R
L
= 2kΩ
C=1.7pF, Gain=1, V
OUT
=5V, peak to peak,
negative SR = 2500V/µs
source
sink
No Load
f = 10kHz
f = 10kHz
A
V
= 1, R
L
= 1kΩ, C
L
= 1.7pF
Exceeding the absolute maximum rating may damage the device.
The device is not guaranteed to function outside its operating rating.
Exceeding the maximum differential input voltage will damage the input stage and degrade performance (in particular, input bias current is
likely to change).
Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.
Output swing limited by the maximum output sink capability, refer to the short-circuit current vs. temperature graph in “Typical Characteristics.”
March 2006
3
MIC920
MIC920
Micrel, Inc.
V+
10µF
V+
Test Circuits
Input
BNC
50Ω
0.1µF
10k
3
0.1µF
R2
5k
10µF
2k
5
10k
10k
1
MIC920
2
4
BNC
Input
BNC
R1 5k
R7c 2k
R7b 200Ω
R7a 100Ω
3
5
0.1µF
4
BNC
Output
1
MIC920
2
Output
50Ω
0.1µF
R6
5k
R3
200k
R4
250Ω
R5
5k
10µF
Input
BNC
0.1µF
50
0.1µF
All resistors 1%
V–
All resistors:
1% metal film
10µF
V–
R2 R2 + R 5 + R4
V
OUT
= V
ERROR
1 +
+
R1
R7
PSRR vs. Frequency
CMRR vs. Frequency
100pF
R2 4k
V+
10µF
3
V+
10µF
10pF
R1
20Ω
R3 27k
S1
S2
5
0.1µµF
4
3
5
0.1µF
4
BNC
1
MIC920
2
R5
20Ω
R4 27k
10pF
0.1F
To
Dynamic
Analyzer
V
IN
1
MIC920
2
300Ω
V
OUT
FET Probe
0.1µF
50Ω
1k
C
L
10µF
10µF
V–
V–
Noise Measurement
Closed Loop Frequency Response Measurement
MIC920
4
March 2006
MIC920
Micrel, Inc.
Typical Characteristics
Offset Voltage
vs. Temperature
V± =
±2.5V
1.25
OFFSET VOLTAGE (mV)
1.2
0.60
SUPPLY CURRENT (mA)
Supply Current
vs. Temperature
V± =
±9V
V± =
±5V
V± =
±2.5V
1.15
1.1
V± =
±5V
V± =
±9V
0.50
0.45
0.40
0.35
SUPPLY CURRENT (mA)
0.55
1.05
1
0.95
0.9
-40 -20 0 20 40 60 80 100
TEMPERATURE
°C)
(
0.30
-40 -20 0 20 40 60 80 100
TEMPERATURE
°C)
(
0.62
0.60
0.58
0.56
0.54
0.52
0.50
0.48
0.46
0.44
0.42
0.40
2.5
Supply Current
vs. Supply Voltage
+85°C
+25°C
–40°C
3.8 5.1 6.4 7.7
SUPPLY VOLTAGE (V)
9
-3.40
-2.72
-2.04
-1.36
-0.68
0
0.68
1.36
2.04
2.72
3.40
COMMON-MODE VOLTAGE (V)
84
80
76
72
68
64
60
56
52
48
44
40
2.0
Short-Circuit Current vs.
Supply Voltage (Sourcing)
–40°C
25°C
85°C
3.4 4.8 6.2 7.6 9.0
SUPPLY VOLTAGE (V)
17
20
23
26
29
32
35
38 25°C
85°C
41
44
47
–40°C
50
2.0 3.4 4.8 6.2 7.6 9.0
SUPPLY VOLTAGE (V)
Short-Circuit Current vs.
Supply Voltage (Sinking)
SHORT-CIRCUIT CURRENT (mA)
SHORT-CIRCUIT CURRENT (mA)
45.0
40.5
36.0
31.5
27.0
22.5
18.0
13.5
9.0
4.5
0
0
-8
-16
-24
-32
-40
-48
-56
-64
-72
-80
OUTPUT CURRENT (mA)
OUTPUT CURRENT (mA)
March 2006
5
50
45
40
35
30
25
20
15
10
5
0
0.5
85°C
0
-0.5
-1.0
-1.5
-2.0 25°C
-2.5
-3.0
-3.5
-4.0
-4.5
-5.0
Output Voltage vs.
Output Current (Sinking)
V± =
±5V
–40°C
11
10
9
8
7
6
5
4
3
2
1
0
Output Voltage vs.
Output Current (Sourcing)
V± =
±9V
–40°C
25°C
85°C
1
25°C
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
OUTPUT VOLTAGE (V)
OUTOUT VOLTAGE (V)
OUTOUT VOLTAGE (V)
0
-8
-16
-24
-32
-40
-48
-56
-64
-72
-80
5.5
5.0
4.5
4.0 85°C
3.5
3.0
2.5 –40°C
2.0
1.5
1.0
0.5
0
OUTPUT VOLTAGE (V)
-7.40
-5.92
-4.44
-2.96
-1.48
0
1.48
2.96
4.44
5.92
7.40
2.2
2
V± =
±2.5V
1.8
1.6
–40°C
1.4
1.2
+25°C
1
0.8
0.6
0.4
0.2
+85°C
0
-900 -540 -180 180 540 900
COMMON-MODE VOLTAGE (V)
Offset Voltage vs.
Common-Mode Voltage
2.2
2
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
Offset Voltage vs.
Common-Mode Voltage
V± =
±5V
–40°C
+25°C
+85°C
2.2
2
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
Offset Voltage vs.
Common-Mode Voltage
V± =
±9V
OFFSET VOLTAGE (mV)
OFFSET VOLTAGE (mV)
OFFSET VOLTAGE (mV)
–40°C
+25°C
+85°C
COMMON-MODE VOLTAGE (V)
Output Voltage vs.
Output Current (Sourcing)
V± =
±5V
25°C
OUTPUT CURRENT (mA)
Output Voltage vs.
Output Current (Sinking)
V± =
±9V
85°C
–40°C
OUTPUT CURRENT (mA)
MIC920
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