MIC920
Micrel
MIC920
80MHz Low-Power SC-70 Op Amp
Final Information
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 fea-
tures 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 pos-
sible 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
MIC920BM5
MIC920BC5
Junction Temp. Range
–40°C to +85°C
–40°C to +85°C
Package
SOT-23-5*
SC-70
* Contact factory for availabilty of SOT-23-5 package.
Pin Configuration
IN–
3
Functional Pinout
V–
2
IN+
1
IN–
V–
2
IN+
1
Part
Identification
3
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. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com
December 2001
1
MIC920
MIC920
Micrel
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)
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.
Symbol
V
OS
V
OS
I
B
I
OS
V
CM
CMRR
PSRR
A
VOL
V
OUT
Parameter
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
CMRR > 72dB
–2.5V < V
CM
< +2.5V
±3.5V
< V
S
<
±9V
R
L
= 2k, V
OUT
=
±2V
R
L
= 100Ω, V
OUT
=
±1V
Maximum Output Voltage Swing
positive, R
L
= 2kΩ
negative, R
L
= 2kΩ
positive, R
L
= 200Ω
negative, R
L
= 200Ω,
Note 5
GBW
PM
BW
SR
I
SC
I
S
Unity Gain-Bandwidth Product
Phase Margin
–3dB Bandwidth
Slew Rate
Short-Circuit Output Current
Av = 1, R
L
= 1kΩ, C
L
= 1.7pF
C=1.7pF, Gain=1, V
OUT
=5V, peak to peak,
positive SR = 1190V/µs
source
sink
Supply Current
Input Voltage Noise
Input Current Noise
No Load
f = 10kHz
f = 10kHz
45
20
C
L
= 1.7pF
+1.5
+3.0
–3.25
75
95
65
85
104
82
85
3.6
–3.6
3.0
–2.5
67
32
100
1350
63
45
0.55
11
0.7
0.80
–1.0
–3.0
Condition
Min
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
nV/√Hz
pA/√Hz
Electrical Characteristics
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
Symbol
V
OS
V
OS
I
B
I
OS
V
CM
CMRR
PSRR
Parameter
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
–6.5V < V
CM
< +6.5V
±3.5V
< V
S
<
±9V
–7.25
60
95
91
104
Condition
Min
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
MIC920
2
December 2001
MIC920
Symbol
A
VOL
V
OUT
GBW
PM
BW
SR
I
SC
I
S
Parameter
Large-Signal Voltage Gain
Condition
R
L
= 2k, V
OUT
=
±2V
R
L
= 100Ω, V
OUT
=
±1V
Maximum Output Voltage Swing
positive, R
L
= 2kΩ
negative, R
L
= 2kΩ
Unity Gain-Bandwidth Product
Phase Margin
–3dB Bandwidth
Slew Rate
Short-Circuit Output Current
A
V
= 1, R
L
= 1kΩ, C
L
= 1.7pF
C=1.7pF, Gain=1, V
OUT
=5V, peak to peak,
negative SR = 2500V/µs
source
sink
Supply Current
Input Voltage Noise
Input Current Noise
Note 1.
Note 2.
Note 3.
Note 4.
Note 5.
Micrel
Min
75
Typ
84
93
6.5
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
nV/√Hz
pA/√Hz
C
L
= 1.7pF
No Load
f = 10kHz
f = 10kHz
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.”
December 2001
3
MIC920
MIC920
Micrel
Test Circuits
V+
10µF
V+
50Ω
BNC
0.1µF
R2
5k
10µF
Input
0.1µF
10k
10k
50Ω
BNC
2k
3
5
BNC
Input
4
BNC
R1 5k
R7c 2k
R7b 200Ω
R7a 100Ω
R6
5k
3
5
0.1µF
4
BNC
MIC920
1
2
Output
MIC920
1
2
Output
10k
0.1µF
0.1µF
50Ω
All resistors 1%
Input
0.1µF
R3
200k
R4
250Ω
R5
5k
V–
10µF
All resistors:
1% metal film
V–
10µF
R2 R2
+
R 5
+
R4
V
OUT
=
V
ERROR
1
+
+
R1
R7
PSRR vs. Frequency
CMRR vs. Frequency
100pF
V+
V+
10µF
10pF
R1
20Ω
R2 4k
10µF
3
0.1µF
5
R3 27k
S1
S2
3
5
0.1µF
4
BNC
MIC920
1
2
To
Dynamic
Analyzer
MIC920
V
IN
50Ω
1
2
4
300Ω
V
OUT
FET Probe
0.1µF
1k
R5
20Ω
R4 27k
0.1µF
C
L
10pF
V–
10µF
10µF
V–
Noise Measurement
Closed Loop Frequency Response Measurement
MIC920
4
December 2001
MIC920
Micrel
Typical Characteristics
Offset Voltage
vs. Temperature
1.25
SUPPLY CURRENT (mA)
Supply Current
vs. Temperature
0.60
V± =
±9V
V± =
±5V
V± =
±2.5V
SUPPLY CURRENT (mA)
Supply Current
vs. Supply Voltage
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
OFFSET VOLTAGE (mV)
1.2
1.15
1.1
1.05
1
0.95
V± =
±2.5V
0.55
0.50
0.45
0.40
0.35
V± =
±5V
V± =
±9V
+85°C
+25°C
–40°C
0.9
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
0.30
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
3.8
5.1
6.4
7.7
SUPPLY VOLTAGE (V)
9
Offset Voltage vs.
Common-Mode Voltage
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)
2.2
2
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
OFFSET VOLTAGE (mV)
OFFSET VOLTAGE (mV)
Offset Voltage vs.
Common-Mode Voltage
OFFSET VOLTAGE (mV)
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
V± =
±9V
V± =
±5V
–40°C
+25°C
–40°C
+25°C
+85°C
1.48
2.96
4.44
5.92
-64
-72
–40°C
+85°C
0.68
1.36
2.04
2.72
-2.04
-1.36
-0.68
0
3.40
-3.40
-2.72
-7.40
-5.92
-4.44
-2.96
COMMON-MODE VOLTAGE (V)
COMMON-MODE VOLTAGE (V)
Short-Circuit Current vs.
Supply Voltage (Sourcing)
84
80
76
72
68
64
60
56
52
48
44
40
2.0
SHORT-CIRCUIT CURRENT (mA)
SHORT-CIRCUIT CURRENT (mA)
Short-Circuit Current vs.
Supply Voltage (Sinking)
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)
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
OUTPUT VOLTAGE (V)
Output Voltage vs.
Output Current (Sourcing)
V± =
±5V
85°C
25°C
–40°C
–40°C
25°C
85°C
-8
-16
-24
-32
-40
-48
-56
-1.48
0
3.4
4.8
6.2
7.6
SUPPLY VOLTAGE (V)
9.0
OUTPUT CURRENT (mA)
Output Voltage vs.
Output Current (Sinking)
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
V± =
±5V
Output Voltage vs.
Output Current (Sourcing)
11
10
9
8
7
6
5
4
3
2
1
0
V± =
±9V
OUTOUT VOLTAGE (V)
OUTOUT VOLTAGE (V)
Output Voltage vs.
Output Current (Sinking)
1
25°C
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
50
45
V± =
±9V
85°C
OUTPUT VOLTAGE (V)
25°C
–40°C
–40°C
85°C
-16
-24
-32
-40
-48
-56
-64
-72
-80
0
-8
45.0
40.5
36.0
31.5
27.0
22.5
18.0
13.5
9.0
4.5
0
40
35
30
25
20
15
10
OUTPUT CURRENT (mA)
OUTPUT CURRENT (mA)
OUTPUT CURRENT (mA)
December 2001
5
5
0
-80
0
7.40
MIC920
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