MIC922
Micrel, Inc.
MIC922
230MHz Low-Power SC-70 Op Amp
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
Standard
MIC922BC5
Marking
A39
Pb-Free
MIC922YC5
Marking
A39
Ambient Temperature
–40ºC to +85ºC
Package
SC-70-5
Pin Configuration
IN– V– IN+
3
Functional Pinout
2
1
A39
4
5
Part
Identification
IN–
3
V– IN+
2
1
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. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-100 • http://www.micrel.com
May 2006
1
MIC922
MIC922
Micrel, Inc.
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)
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
-5
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
±3.5V < V
S
< ±9V
–2.5V < V
CM
< +2.5V
R
L
= 2kΩ, V
OUT
= ±2V
positive, R
L
= 2kΩ
-2
–3.25
75
68
65
+3
+2.7
80
87
74
77
3.6
–3.6
3.0
–2.6
200
49
320
420
65
40
78
47
2.5
9
1.1
3
–2.3
–3
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
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
= 100Ω
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
C
L
= 1.7pF
negative, R
L
= 100Ω,
Note 5
C=1.7pF, Gain=1, V
OUT
=4V
PP
negative SR = 360V/µs
source
sink
No Load
f = 10kHz
f = 10kHz
Av = 1, 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
-5
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
±3.5V < V
S
< ±9V
–6.5V < V
CM
< +6.5V
–7.25
58
68
83
87
Typ
0.4
15
1.7
0.3
4.5
2
+7.25
Max
5
Units
mV
µV/°C
µA
µA
V
dB
dB
I
OS
V
CM
CMRR
PSRR
MIC922
2
May 2006
MIC922
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
= 100Ω, V
OUT
= ±1V
negative, R
L
= 2kΩ
C
L
= 1.7pF
positive, R
L
= 2kΩ
R
L
= 2kΩ, V
OUT
= ±3V
Min
65
7
Typ
76
86
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
C
L
= 1.7pF
C=1.7pF, Av =1, V
OUT
=8V
PP
,
positive SR = 750V/µs
source
sink
No Load
f = 10kHz
f = 10kHz
A
V
= 1, 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.”
May 2006
3
MIC922
MIC922
Micrel, Inc.
V+
10µF
Test Circuits
Input
BNC
50Ω
0.1µF
10k
3
0.1µF
V+
R2
5k
10µF
2k
5
10k
10k
1
MIC922
2
4
BNC
Output
Input
BNC
R1 5k
R7c 2k
R7b 200Ω
R7a 100Ω
3
5
0.1µF
4
BNC
1
MIC922
2
Output
50Ω
0.1µF
Input
BNC
0.1µF
R6
5k
R3
200k
R4
250Ω
R5
5k
10µF
50Ω
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
3
5
0.1µF
4
BNC
5
0.1µF
4
1
MIC922
2
R5
20Ω
R4 27k
10pF
0.1µF
To
Dynamic
Analyzer
V
IN
1
MIC922
2
300Ω
V
OUT
FET Probe
0.1µF
50Ω
C
L
10µF
10µF
V–
V–
Noise Measurement
Closed Loop Frequency Response Measurement
MIC922
4
May 2006
MIC922
Micrel, Inc.
Typical Characteristics
Supply Current
vs. Temperature
V± = ±9V
2.70
SUPPLY CURRENT (mA)
2.65
2.60
2.55
2.50
2.45
2.40
2.35
2.30
2.60
SUPPLY CURRENT (mA)
2.55
2.50
2.45
2.40
2.35
2.30
Supply Current
vs. Supply Voltage
–40°C
25°C
1.4
OFFSET VOLTAGE (mV)
1.2
1
Offset Voltage
vs. Temperature
V± = ±2.5V
0.8
0.6
0.4
0.2
V± = ±5V
V± = ±9V
V± = ±5V
85°C
V± = ±2.5V
2.25
-40 -20 0 20 40 60 80 100
TEMPERATURE °C)
(
2.25
2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5
SUPPLY VOLTAGE (V)
0
-40 -20 0 20 40 60 80 100
TEMPERATURE °C)
(
8
7 V± = ±5V
25°C
6
5
4
–40°C
3
2
1
0
85°C
-1
-2
-3
-5 -4 -3 -2 -1 0 1 2 3 4 5
COMMON-MODE VOLTAGE (V)
Offset Voltage
vs. Common-Mode Voltage
OFFSET VOLTAGE (mV)
-9.0
-7.2
-5.4
-3.6
-1.8
0
1.8
3.6
5.4
7.2
9.0
8
7
6
5
4
3
2
1
0
-1
-2
-3
Offset Voltage
vs. Common-Mode Voltage
V± = ±9V
25°C
–40°C
85°C
COMMON-MODE VOLTAGE (V)
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)
Output Voltage
vs. Output Current
OFFSET VOLTAGE (mV)
OUTPTU VOLTAGE (V)
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
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
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)
Output Voltage
vs. Output Current
2.0
2.7
3.4
4.1
4.8
5.5
6.2
6.9
7.6
8.3
9.0
SUPPLY VOLTAGE ±V)
(
May 2006
2.0
2.7
3.4
4.1
4.8
5.5
6.2
6.9
7.6
8.3
9.0
99
90 Sourcing
81
72
63
54
45
36
27
18
9
0
Short-Circuit Current
vs. Supply Voltage
–40°C
85°C
25°C
OUTPUT VOLTAGE (V)
6
0
-6
-12
-18
-24
-30
-36
-42
-48
-54
-60
Short Circuit Current
vs. Supply Voltage
INPUT BIAS CURRENT (µA)
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
SHORT-CIRCUIT CURRENT (mA)
NOISE VOLTAGE (nV/HZ)
Sinking
3
2.5
2
Bias Current
vs. Temperature
25°C
85°C
V± = ±2.5V
V± = ±5V
V± = ±9V
1.5
1
–40°C
SUPPLY VOLTAGE ±V)
(
0.5
0
-40 -20 0 20 40 60 80 100
TEMPERATURE °C)
(
5
MIC922
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