mic921bm5 Micrel Semiconductor, mic921bm5 Datasheet

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mic921bm5

Manufacturer Part Number
mic921bm5
Description
Mic921 45mhz Low-power Sc-70 Op Amp
Manufacturer
Micrel Semiconductor
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MIC921BM5
Manufacturer:
MICREL/麦瑞
Quantity:
20 000
General Description
The MIC921 is a high-speed operational amplifier with a
gain-bandwidth product of 45MHz. The part is unity gain
stable. It has a very low 300µA supply current, and features
the IttyBitty
Supply voltage range is from ±2.5V to ±9V, allowing the
MIC921 to be used in low-voltage circuits or applications
requiring large dynamic range.
The MIC921 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 MIC921 ideal for portable equipment. The ability
to drive capacitative loads also makes it possible to drive
long coaxial cables.
Pin Configuration
Pin Description
April 2006
MIC921
IttyBitty is a trademark or Micrel, Inc.
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
Pin Number
1
2
3
4
5
SC-70 and SOT-23-5 package.
SOT-23-5 or SC-70
OUT
IN–
3
4
A38
V–
2
Pin Name
IN+
V+
1
5
OUT
IN+
IN–
V–
V+
Ordering Information
* Contact factory for availability of SOT-23-5 package.
Note: Underbar marking may not be to scale.
Standard
MIC921BM5
MIC921BC5
Part
Identification
Marking
Pin Function
Noninverting Input
Negative Supply (Input)
Inverting Input
Output: Amplifier Output
Positive Supply (Input)
A38
A38
Part Number
1
Pb-Free
MIC921YC5
Features
• 45MHz gain bandwidth product
• 61MHz –3dB bandwidth
• 300µA supply current
• SC-70 or SOT-23-5 packages
• 3200V/µs slew rate
• Drives any capacitive load
• 112dB CMRR
• Unity gain stable
Applications
• Video
• Imaging
• Ultrasound
• Portable equipment
• Line drivers
Functional Pinout
45MHz Low-Power SC-70 Op Amp
Marking
A38
SOT-23-5 or SC-70
OUT
Ambient Temperature
MIC921
IN–
3
4
–40ºC to +85ºC
–40ºC to +85ºC
V–
2
IN+
V+
1
5
SOT-23-5*
Package
SC-70-5
Micrel, Inc.
MIC921

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mic921bm5 Summary of contents

Page 1

... Video • Imaging • Ultrasound • Portable equipment • Line drivers Ordering Information Part Number Standard Marking Pb-Free MIC921BM5 A38 MIC921BC5 A38 MIC921YC5 * Contact factory for availability of SOT-23-5 package. Note: Underbar marking may not be to scale. Functional Pinout Part Identification ...

Page 2

MIC921 Absolute Maximum Ratings Supply Voltage (V – ........................................... 20V V+ V– Differentail Input Voltage (V – V IN+ Input Common-Mode Range ( IN+ Lead Temperature (soldering, 5 sec.) ........................ 260°C Storage Temperature (T ) ......................................... ...

Page 3

MIC921 Symbol Parameter PSRR Power Supply Rejection Ratio A Large-Signal Voltage Gain VOL V Maximum Output Voltage Swing OUT GBW Unity Gain-Bandwidth Product PM Phase Margin BW –3dB Bandwidth SR Slew Rate I Short-Circuit Output Current SC I Supply Current ...

Page 4

MIC921 Test Circuits V+ 10µF 0.1µF 50Ω BNC Input 0.1µF 10k 3 5 MIC921 10k 1 10k 2 50Ω 0.1µF BNC Input 50Ω 0.1µF All resistors: 10µF 1% metal film V– PSRR vs. Frequency 100pF 10µF 10pF ...

Page 5

MIC921 Typical Characteristics Offset Voltage vs. Temperature 1 0.95 0.9 0.85 V± = ±2.5V 0.8 0.75 0.7 V± = ±5V 0.65 V± = ±9V 0.6 0.55 0.5 -40 - 100 TEMPERATURE ( °C) Offset Voltage ...

Page 6

MIC921 Bias Current vs. Temperature 0.18 0.16 0.14 0.12 V± = ±5V 0.10 V± = ±9V 0.08 0.06 0.04 0.02 0.00 -40 - 100 TEMPERATURE ( °C) Open-Loop Gain vs. Frequenc y 50 V± = ...

Page 7

MIC921 Positive Slew Rate vs. Supply Voltage 800 700 600 500 400 300 200 100 POSITIVE VOLTAGE ( ±V) Positive Slew Rate 1600 V± = ±5V 1400 1200 1000 800 600 ...

Page 8

MIC921 Functional Characteristics Small Signal Reponse V = ± 1.7pF L TIME (100ns/div) Small Signal Reponse V = ± 100pF L TIME (500ns/div) Small Signal Reponse V = ±5V Av ...

Page 9

MIC921 Large Signal Response Positive Slew Rate = 1520V/µs Negative Slew Rate = 1312V/µs TIME (25ns/div) Large Signal Response Positive Slew Rate = 349V/µs Negative Slew Rate = 181V/µs TIME (50ns/div) Large Signal Response Positive Slew Rate = 63V/µs Negative ...

Page 10

MIC921 Applications Information The MIC921 is a high-speed, voltage-feedback operational amplifier featuring very low supply current and excellent stability. This device is unity gain stable, capable of driving high capacitance loads. Driving High Capacitance The MIC921 is stable when driving ...

Page 11

MIC921 Package Information MICREL INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL This information furnished by Micrel in this data sheet is believed to be accurate and reliable. However no responsibility is assumed by ...

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