MIC922
Micrel
MIC922
230MHz Low-Power SC-70 Op Amp
Final Information
General Description
The MIC922 is a high-speed operational amplifier with a gain-
bandwidth product of 230MHz. The part is unity gain stable.
It has a very low 2.5mA supply current, and features the
Teeny™ SC-70 package.
Supply voltage range is from
±2.5V
to
±9V,
allowing the
MIC922 to be used in low-voltage circuits or applications
requiring large dynamic range.
The MIC922 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 MIC922 ideal for portable equipment. The ability to
drive capacitative loads also makes it possible to drive long
coaxial cables.
Features
•
•
•
•
•
•
•
230MHz gain bandwidth product
400MHz –3dB bandwidth
2.5mA supply current
SC-70 package
1500V/µs slew rate
Drives any capacitive load
Unity gain stable
Applications
•
•
•
•
•
Video
Imaging
Ultrasound
Portable equipment
Line drivers
Ordering Information
Part Number
MIC922BC5
Junction Temp. Range
–40°C to +85°C
Package
SC-70
Pin Configuration
IN–
3
Functional Pinout
V–
2
IN+
1
IN–
V–
2
IN+
1
Part
Identification
3
A39
4
5
4
5
OUT
V+
OUT
V+
SC-70
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)
Teeny is a trademark of Micrel, Inc.
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com
March 2002
1
MIC922
MIC922
Micrel
Absolute Maximum Ratings
(Note 1)
Supply Voltage (V
V+
– V
V–
) ........................................... 20V
Differential 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
SC-70-5
(θ
JA
) .................................................... 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
–2.5V < V
CM
< +2.5V
±3.5V
< V
S
<
±9V
R
L
= 2kΩ, V
OUT
=
±2V
R
L
= 100Ω, V
OUT
=
±1V
Maximum Output Voltage Swing
positive, R
L
= 2kΩ
negative, R
L
= 2kΩ
positive, R
L
= 100Ω
negative, R
L
= 100Ω,
Note 5
GBW
PM
BW
SR
I
SC
I
S
Unity Gain-Bandwidth Product
Phase Margin
–3dB Bandwidth
Slew Rate
Short-Circuit Output Current
C
L
= 1.7pF
C
L
= 1.7pF
Av = 1, C
L
= 1.7pF
C=1.7pF, Gain=1, V
OUT
=4V
PP
negative SR = 360V/µs
source
sink
Supply Current
Input Voltage Noise
Input Current Noise
No Load
f = 10kHz
f = 10kHz
65
40
+2.7
+3
-2
–3.25
75
68
65
80
87
74
77
3.6
–3.6
3.0
–2.6
200
49
320
420
78
47
2.5
9
1.1
3
–2.3
–3
Condition
Min
-5
Typ
0.8
15
1.7
0.3
4.5
2
+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
–6.5V < V
CM
< +6.5V
±3.5V
< V
S
<
±9V
–7.25
58
68
83
87
Condition
Min
-5
Typ
0.4
15
1.7
0.3
4.5
2
+7.25
Max
5
Units
mV
µV/°C
µA
µA
V
dB
dB
MIC922
2
March 2002
MIC922
Symbol
A
VOL
V
OUT
GBW
PM
BW
SR
I
SC
I
S
Parameter
Large-Signal Voltage Gain
Condition
R
L
= 2kΩ, V
OUT
=
±3V
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
C
L
= 1.7pF
C
L
= 1.7pF
A
V
= 1, C
L
= 1.7pF
C=1.7pF, Av =1, V
OUT
=8V
PP
,
positive SR = 750V/µs
source
sink
Supply Current
Input Voltage Noise
Input Current Noise
Note 1.
Note 2.
Note 3.
Note 4.
Note 5.
Micrel
Min
65
Typ
76
86
7
7.5
–7.5
230
44
400
1500
70
40
84
50
2.5
9
1.1
3
–7
Max
Units
dB
dB
V
V
MHz
°
MHz
V/µs
mA
mA
mA
nV/√Hz
pA/√Hz
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.”
March 2002
3
MIC922
MIC922
Micrel
Test Circuits
V+
10µF
V+
50Ω
BNC
0.1µF
R2
5k
10µF
Input
0.1µF
10k
10k
50Ω
BNC
2k
3
5
BNC
BNC
Input
Output
R1 5k
R7c 2k
R7b 200Ω
R7a 100Ω
R6
3
5
0.1µF
4
BNC
MIC922
1
2
4
MIC922
1
2
Output
10k
0.1µF
0.1µF
50Ω
5k
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
MIC922
1
2
To
Dynamic
Analyzer
MIC922
V
IN
50Ω
1
2
4
300Ω
V
OUT
FET Probe
0.1µF
R5
20Ω
R4 27k
0.1µF
C
L
10pF
V–
10µF
10µF
V–
Noise Measurement
Closed Loop Frequency Response Measurement
MIC922
4
March 2002
MIC922
Micrel
Typical Characteristics
Supply Current
vs. Temperature
2.70
SUPPLY CURRENT (mA)
2.60
Supply Current
vs. Supply Voltage
1.4
OFFSET VOLTAGE (mV)
–40°C
25°C
2.55
2.50
2.45
2.40
2.35
2.30
2.25
2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5
SUPPLY VOLTAGE (V)
85°C
Offset Voltage
vs. Temperature
1.2
1
0.8
0.6
0.4
0.2
0
-40 -20
0
20
V± =
±5V
V± =
±9V
40
60
80 100
V± =
±2.5V
SUPPLY CURRENT (mA)
2.65
2.60
2.55
2.50
2.45
2.40
2.35
2.30
2.25
-40 -20
0
V± =
±5V
V± =
±9V
V± =
±2.5V
20
40
60
80 100
TEMPERATURE (°C)
TEMPERATURE (°C)
Offset Voltage
vs. Common-Mode Voltage
8
7
6
5
4
3
2
1
0
-1
-2
-3
V± =
±5V
OFFSET VOLTAGE (mV)
Offset Voltage
vs. Common-Mode Voltage
8
7
6
5
4
3
2
1
0
-1
-2
-3
V± =
±9V
OUTPTU VOLTAGE (V)
Output Voltage
vs. Output Current
5.5
5.0 Sourcing
V± =
±5V
4.5
4.0
3.5
3.0
2.5
–40°C
2.0
1.5
85°C
1.0
0.5
25°C
0
0 10 20 30 40 50 60 70 80
OUTPUT CURRENT (mA)
OFFSET VOLTAGE (mV)
25°C
–40°C
25°C
–40°C
85°C
85°C
-9.0
-7.2
-5.4
-3.6
-1.8
0
1.8
3.6
5.4
7.2
-5 -4 -3 -2 -1 0 1 2 3 4 5
COMMON-MODE VOLTAGE (V)
COMMON-MODE VOLTAGE (V)
Output Voltage
vs. Output Current
9.9
9.0 Sourcing
V± =
±9V
8.1
7.2
6.3
–40°C
5.4
4.5
3.6
2.7
+25°C
1.8
+85°C
0.9
0
0 10 20 30 40 50 60 70 80 90
OUTPUT CURRENT (mA)
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
Output Voltage
vs. Output Current
0.5
Sinking
0
V± =
±5V
-0.5
-1.0
-1.5
-2.0 –40°C
-2.5
25°C
-3.0
-3.5
-4.0
85°C
-4.5
-5.0
-50-45-40-35-30-25-20-15-10 -5 0
OUTPUT CURRENT (mA)
OUTPUT VOLTAGE (V)
9.0
Output Votage
vs. Output Current
0.9
Sinking
0.0
V± =
±9V
-0.9
-1.8
25°C
-2.7
-3.6
-4.5
-5.4 –40°C
-6.3
-7.2
-8.1
85°C
-9.0
-60-54-48-42-36-30-24-18-12 -6 0
OUTPUT CURRENT (mA)
Short-Circuit Current
vs. Supply Voltage
99
90 Sourcing
81
72
63
54
45
36
27
18
9
0
2.0
2.7
3.4
–40°C
NOISE VOLTAGE (nV/HZ)
Short Circuit Current
vs. Supply Voltage
6
0
-6
-12
-18
-24
-30
-36
-42
-48
-54
-60
Bias Current
vs. Temperature
3
INPUT BIAS CURRENT (µA)
2.5
2
1.5
1
0.5
0
-40 -20
0
20
V± =
±9V
V± =
±5V
V± =
±2.5V
SHORT-CIRCUIT CURRENT (mA)
Sinking
85°C
25°C
25°C
85°C
–40°C
2.0
2.7
3.4
4.1
4.8
5.5
6.2
6.9
7.6
8.3
9.0
4.1
4.8
5.5
6.2
6.9
7.6
8.3
9.0
40
60
80 100
SUPPLY VOLTAGE (±V)
SUPPLY VOLTAGE (±V)
TEMPERATURE (°C)
March 2002
5
MIC922
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