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Document overview
- Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 24
Technical content
Features
- 80 MHz Gain Bandwidth Product
- 115 MHz –3dB Bandwidth
- 550 μA Supply Current (Typical)
- 5-Lead SC70 Package
- 3000V/μs Slew Rate (T ypical)
- Drives Any Capacitive Load
- Unity Gain Stable
Applications
- Video
- Imaging
- Ultrasound
- Portable Equipment
- Line Drivers General Description The MIC920 is a high-speed operational amplifier with a gain-bandwidth product of 80 MHz. The part is unity gain stable. It has a very low 550 μA supply current, and features the 5-Lead SC70 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. Package Type Pin Configuration Functional Pinout OUT V+ ,1í IN+ 9íIN+ V– OUT IN– A37 Part Identification
80 MHz Low-Power SC70 Op Amp
DS20006268A-page 2 2019 Microchip Technology Inc.
1.0 ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings † Operating Ratings ‡ † Notice: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational sections of this specification is not intended. Exposure to maximum rating conditions for extended periods may affect device reliability. ‡ Notice: The device is not guaranteed to function outside the operating ratings. Note 1: Exceeding the maximum differential input voltage will damage the input stage and degrade performance (in particular, input bias current is likely to change). 2: Devices are ESD sensitive. Handling precautions are recommended. Human body model, 1.5 kΩ in series with 100 pF. Pin 4 is ESD sensitive.
ELECTRICAL CHARACTERISTICS (±5V) Electrical Characteristics: V+ = +5V, V– = –5V, VCM = 0V, RL = 10 MΩ; TA = 25°C, unless otherwise noted. Parameters Symbol Min. Typ. Max. Units Conditions Input Offset Voltage VOS — 0.43 5 mV –40°C ≤ TJ ≤ +85°C Input Offset Voltage T emperature Coefficient ΔVOS/ΔTA — 1 — μV/°C –40°C ≤ TJ ≤ +85°C Input Bias Current IB — 0.26 0.6 μA –40°C ≤ TJ ≤ +85°C Input Offset Current IOS — 0.04 0.3 μA –40°C ≤ TJ ≤ +85°C Input Common-Mode Range V CM –3.25 — +3.25 V CMRR > 72 dB, –40°C ≤ TJ ≤ +85°C Common-Mode Rejection Ratio CMRR 75 85 — dB –2.5V < V CM < +2.5V Power Supply Rejection Ratio PSRR 95 104 — dB ±3.5V < V S < ±9V Large-Signal V oltage Gain AVOL 65 82 — dB RL = 2k, VOUT = ±2V — 85 — dB RL = 100Ω, VOUT = ±1V Maximum Output V oltage Swing VOUT +3.0 3.6 — V Positive, RL = 2 kΩ –40°C ≤ TJ ≤ +85°C — –3.6 –3.0 V Negative, RL = 2 kΩ –40°C ≤ TJ ≤ +85°C Unity Gain-Bandwidth Product GBW — 67 — MHz CL = 1.7 pF Phase Margin PM — 32 — ° — –3 dB Bandwidth BW — 100 — MHz AV = 1, CL = 1.7 pF, RL = 1 kΩ Slew Rate SR — 1350 — V/μs C = 1.7 pF, Gain = 1, VOUT = 5V, Peak to Peak, Positive SR = 1190V/μs Short-Circuit Output Current I SC 45 63 — mA Source 20 45 — Sink Supply Current IS — 0.55 0.80 mA No load, –40°C ≤ TJ ≤ +85°C Input Voltage Noise — — 11 — nV/√Hz f = 10 kHz Input Current Noise — — 0.7 — pA/√Hz f = 10 kHz 2019 Microchip Technology Inc. DS20006268A-page 3 MIC920
ELECTRICAL CHARACTERISTICS
Electrical Characteristics: V+ = +9V, V– = –9V, VCM = 0V RL = 10 MΩ; TJ = 25°C, unless otherwise noted. Parameters Symbol Min. Typ. Max. Units Conditions Input Offset Voltage VOS — 0.3 5 mV –40°C ≤ TJ ≤ +85°C Input Offset Voltage T emperature Coefficient ΔVOS/ΔTA — 1 — μV/°C –40°C ≤ TJ ≤ +85°C Input Bias Current IB — 0.23 0.60 μA –40°C ≤ TJ ≤ +85°C Input Offset Current IOS — 0.04 0.3 μA –40°C ≤ TJ ≤ +85°C Input Common-Mode Range V CM –7.25 — +7.25 V CMRR > 75 dB, –40°C ≤ TJ ≤ +85°C Common-Mode Rejection Ratio CMRR 60 91 — dB –6.5V < V CM < +6.5V Power Supply Rejection Ratio PSRR 95 104 — dB ±3.5V < V S < ±9V Large-Signal V oltage Gain AVOL 75 84 — dB RL = 2k, VOUT = ±2V — 93 — dB RL = 100Ω, VOUT = ±1V Maximum Output V oltage Swing VOUT 6.5 7.5 — V Positive, RL = 2 kΩ, –40°C ≤ TJ ≤ +85°C — –7.5 –6.2 V Negative, RL = 2 kΩ –40°C ≤ TJ ≤ +85°C Unity Gain-Bandwidth Product G BW — 80 — MHz CL = 1.7 pF Phase Margin PM — 30 — ° — –3 dB Bandwidth BW — 115 — MHz AV = 1, CL = 1.7 pF, RL = 1 kΩ Slew Rate SR — 3000 — V/μs C = 1.7 pF, Gain = 1, VOUT = 5V, Peak to Peak, Positive SR = 2500V/μs Short-Circuit Output Current I SC 50 65 — mA Source 30 50 — Sink Supply Current IS — 0.55 0.8 mA No load, –40°C ≤ TJ ≤ +85°C Input Voltage Noise — — 10 — nV/√Hz f = 10 kHz Input Current Noise — — 0.8 — pA/√Hz f = 10 kHz MIC920 DS20006268A-page 4 2019 Microchip Technology Inc.
TEMPERATURE SPECIFICATIONS (Note 1) Parameters Symbol Min. Typ. Max. Units Conditions Temperature Ranges Storage Temperature TS — — 150 °C — Operating Junction Temperature Range TJ –40 — +85 °C — Lead Temperature — — — 260 °C Soldering, 5 sec. Package Thermal Resistance Thermal Resistance SC70 — — 450 — °C/W — Note 1: The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable junction temperature and the thermal resistance from junction to air (i.e., TA, TJ, JA). Exceeding the maximum allowable power dissipation will cause the device operating junction temperature to exceed the maximum +85°C rating. Sustained junction temperatures above +85°C can impact the device reliability. 2019 Microchip Technology Inc. DS20006268A-page 5 MIC920
DS20006268A-page 6 2019 Microchip Technology Inc.
2.0 TYPICAL PERFORMANCE CURVES
0.9 0.95 1.05 1.1 1.15 1.2 1.25 -40 -20 0 20 40 60 80 100 ) V m ( E G A T L O V T E S F F O TEMPERATURE (qC) Vr = r2.5V Vr = r5V Vr = r9V Note: The graphs and tables provided following this note are a statistical summary based on a limited number of samples and are provided for informational purposes only. The performance characteristics listed herein are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified operating range (e.g., outside specified power supply range) and therefore outside the warranted range. FIGURE 2-1: Offset Voltage vs. Temperature. 0.30 0.35 0.40 0.45 0.50 0.55 0.60 -40 -20 0 20 40 60 80 100 ) A m ( T N E R R U C Y L P P U S TEMPERATURE (qC) Vr = r2.5V Vr = r9V Vr = r5V FIGURE 2-2: Supply Current vs. Temperature. 0.40 0.42 0.44 0.46 0.48 0.50 0.52 0.54 0.56 0.58 0.60 0.62 ) A m ( T N E R R U C Y L P P U S SUPPLY VOLTAGE (V) –40qC +85qC +25qC FIGURE 2-3: Supply Current vs. Supply Voltage. 0.2 0.4 0.6 0.8 1.2 1.4 1.6 1.8 2.2 -900 -540 -180 180 540 900) V m ( E G A T L O V T E S F F O COMMON-MODE VOLTAGE (V) –40qC +85qC +25qC Vr = r2.5V FIGURE 2-4: Offset Voltage vs. Common-Mode Voltage. 0.2 0.4 0.6 0.8 1.2 1.4 1.6 1.8 2.2 0 4 . 3 - 2 7 . 2 - 4 0 . 2 - 6 3 . 1 - 8 6 . 0 - 8 6 . 0 6 3 . 1 4 0 . 2 2 7 . 2 0 4 . 3 ) V m ( E G A T L O V T E S F F O COMMON-MODE VOLTAGE (V) –40qC +85qC +25qC Vr = r5V FIGURE 2-5: Offset Voltage vs. Common-Mode Voltage. 0.2 0.4 0.6 0.8 1.2 1.4 1.6 1.8 2.2 0 4 . 7 - 2 9 . 5 - 4 4 . 4 - 6 9 . 2 - 8 4 . 1 - 8 4 . 1 6 9 . 2 4 4 . 4 2 9 . 5 0 4 . 7 ) V m ( E G A T L O V T E S F F O COMMON-MODE VOLTAGE (V) –40qC +85qC +25qC Vr = r9V FIGURE 2-6: Offset Voltage vs. Common-Mode Voltage.
DS20006268A-page 14 2019 Microchip Technology Inc.
3.0 TEST CIRCUITS
0.1μF 0.1μF 0.1μF 10μF 0.1μF 10μFAll resistors: 1% metal film Output Input Input MIC920 4 BNC BNC BNC FIGURE 3-1: PSRR vs. Frequency. R2 4k 0.1μF 10μF 0.1F 10μF10pF 10pF MIC920 4 BNC R4 27k R3 27kR1 100pF To Dynamic Analyzer FIGURE 3-2: Noise Measurement. 0.1μF 10μF 0.1μF 10μF MIC920 4 BNC R7c 2k 5E 5D Input 200k Output R1 5kBNC All resistors 1% VV R2 R2 R R4 OUT ERROR=+ + ++§ ©¨ · ¹¸1 5 FIGURE 3-3: CMRR vs. Frequency. VIN MIC920 4 VOUT FET Probe 1k CL 0.1μF 10μF 0.1μF 10μF FIGURE 3-4: Closed Loop Frequency Response Measurement.
2019 Microchip Technology Inc. DS20006268A-page 15 MIC920
4.0 PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 4-1. TABLE 4-1: PIN FUNCTION TABLE Pin Number Symbol Description 1 IN+ Non-inverting input. 2 V– Negative Supply (Input). 3 IN– Inverting Input.
4 OUT Output: Amplifier Output
5 V+ Positive Supply (Input).
DS20006268A-page 16 2019 Microchip Technology Inc.
5.0 APPLICATION INFORMATION
The MIC920 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.
5.1 Driving High Capacitance
The MIC920 is stable when driving high capacitance, making it ideal for driving long coaxial cables or other high-capacitance loads. Most high-speed op amps are only able to drive limited capacitance. Note: Increasing load capacitance does reduce the speed of the device. In applications where the load capacitance reduces the speed of the op amp to an unacceptable level, the ef fect of the load capacitance can be reduced by adding a small resistor (<100Ω) in series with the output.
5.2 Feedback Resistor Selection
Conventional op amp gain configurations and resistor selection apply, the MIC920 is NOT a current feedback device. Also, for minimum peaking, the feedback resistor should have low parasitic capacitance, usually 470Ω is ideal. To use the part as a follower, the output should be connected to input via a short wire.
5.3 Layout Considerations
All high speed devices require careful PCB layout. The following guidelines should be observed: Capacitance, particularly on the two inputs pins will degrade performance; avoid large copper traces to the inputs. Keep the output signal away from the inputs and use a ground plane. It is important to ensure adequate supply bypassing capacitors are located close to the device.
5.4 Power Supply Bypassing
Regular supply bypassing techniques are recommended. A 10 μF capacitor in parallel with a 0.1 μF capacitor on both the positive and negative supplies are ideal. For best performance all bypassing capacitors should be located as close to the op amp as possible and all capacitors should be low ESL (equivalent series inductance), ESR (equivalent series resistance). Surface-mount ceramic capacitors are ideal.
5.5 Thermal Considerations
The SC70-5 package, like all small packages, have a high thermal resistance. It is important to ensure the IC does not exceed the maximum operating junction (die) temperature of 85°C. The part can be operated up to the absolute maximum temperature rating of 125°C, but between 85°C and 125°C performance will degrade, in particular CMRR will reduce. An MIC920 with no load, dissipates power equal to the quiescent supply current x supply voltage. EQUATION 5-1: PDn o load V V + V V -– IS= When a load is added, the additional power is dissipated in the output stage of the op amp. The power dissipated in the device is a function of supply voltage, output voltage and output current. EQUATION 5-2: PD output stage V V + V OUT–= PD Total PDn o load PD output stage+= Ensure the total power dissipated in the device is no greater than the thermal capacity of the package. The SC70-5 package has a thermal resistance of 450°C/W. EQUATION 5-3: PDm a x
2019 Microchip Technology Inc. DS20006268A-page 17 MIC920
6.0 PACKAGING INFORMATION
6.1 Package Marking Information
5-Lead SC70* Example XXX NNN A37 508 Legend: XX...X Product code or customer-specific information Y Year code (last digit of calendar year) YY Year code (last 2 digits of calendar year) WW Week code (week of January 1 is week ‘01’) NNN Alphanumeric traceability code Pb-free JEDEC ® designator for Matte Tin (Sn) * This package is Pb-free. The Pb-free JEDEC designator ( ) can be found on the outer packaging for this package.
- , ▲, ▼ Pin one index is identified by a dot, delta up, or delta down (triangle mark). Note: In the event the full Microchip part number cannot be marked on one line, it will be carried over to the next line, thus limiting the number of available characters for customer-specific information. Package may or may not include the corporate logo. Underbar (_) and/or Overbar (‾) symbol may not be to scale.
DS20006268A-page 18 2019 Microchip Technology Inc. 5-Lead SC70 (C5) Package Outline and Recommended Land Pattern Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging.
2019 Microchip Technology Inc. DS20006268A-page 19 MIC920 APPENDIX A: REVISION HISTORY Revision A (October 2019)
- Converted Micrel document MIC920 to Microchip data sheet template DS20006268A.
- Minor text changes throughout.
DS20006268A-page 20 2019 Microchip Technology Inc. NOTES:
2019 Microchip Technology Inc. DS20006268A-page 21 MIC920 PRODUCT IDENTIFICATION SYSTEM To order or obtain information, e.g., on pricing or delivery, contact your local Microchip representative or sales office. Examples: a) MIC920YC5-TR: 80 MHz Low-Power SC-
70 Op Amp, –40°C to
+85°C Ambient Tempera- ture Range, 5-Lead SC70 Package, 3,000/Reel PART NO. XX PackageDevice Device: MIC920: 80 MHz Low-Power SC70 Op Amp Temperature: Y = –40°C to +85°C Media Type: TR = 3,000/Reel X Temperature -XX Media Type Note 1: Tape and Reel identifier only appears in the catalog part number description. This identifier is used for ordering purposes and is not printed on the device package. Check with your Microchip Sales Office for package availability with the Tape and Reel option.
DS20006268A-page 22 2019 Microchip Technology Inc. NOTES:
2019 Microchip Technology Inc. DS20006268A-page 23 Information contained in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE . Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in life support and/or safety applications is entirely at the buyer’s risk, and the buyer agrees to defend, indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights unless otherwise stated. Trademarks The Microchip name and logo, the Microchip logo, Adaptec, AnyRate, AVR, AVR logo, AVR Freaks, BesTime, BitCloud, chipKIT, chipKIT logo, CryptoMemory, CryptoRF, dsPIC, FlashFlex, flexPWR, HELDO, IGLOO, JukeBlox, KeeLoq, Kleer, LANCheck, LinkMD, maXStylus, maXTouch, MediaLB, megaAVR, Microsemi, Microsemi logo, MOST, MOST logo, MPLAB, OptoLyzer, PackeTime, PIC, picoPower, PICSTART, PIC32 logo, PolarFire, Prochip Designer, QTouch, SAM-BA, SenGenuity, SpyNIC, SST, SST Logo, SuperFlash, Symmetricom, SyncServer, Tachyon, TempTrackr, TimeSource, tinyAVR, UNI/O, Vectron, and XMEGA are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. APT, ClockWorks, The Embedded Control Solutions Company, EtherSynch, FlashTec, Hyper Speed Control, HyperLight Load, IntelliMOS, Libero, motorBench, mTouch, Powermite 3, Precision Edge, ProASIC, ProASIC Plus, ProASIC Plus logo, Quiet-Wire, SmartFusion, SyncWorld, Temux, TimeCesium, TimeHub, TimePictra, TimeProvider, Vite, WinPath, and ZL are registered trademarks of Microchip Technology Incorporated in the U.S.A. Adjacent Key Suppression, AKS, Analog-for-the-Digital Age, Any Capacitor, AnyIn, AnyOut, BlueSky, BodyCom, CodeGuard, CryptoAuthentication, CryptoAutomotive, CryptoCompanion, CryptoController, dsPICDEM, dsPICDEM.net, Dynamic Average Matching, DAM, ECAN, EtherGREEN, In-Circuit Serial Programming, ICSP, INICnet, Inter-Chip Connectivity, JitterBlocker, KleerNet, KleerNet logo, memBrain, Mindi, MiWi, MPASM, MPF, MPLAB Certified logo, MPLIB, MPLINK, MultiTRAK, NetDetach, Omniscient Code Generation, PICDEM, PICDEM.net, PICkit, PICtail, PowerSmart, PureSilicon, QMatrix, REAL ICE, Ripple Blocker, SAM-ICE, Serial Quad I/O, SMART-I.S., SQI, SuperSwitcher, SuperSwitcher II, Total Endurance, TSHARC, USBCheck, VariSense, ViewSpan, WiperLock, Wireless DNA, and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. The Adaptec logo, Frequency on Demand, Silicon Storage Technology, and Symmcom are registered trademarks of Microchip Technology Inc. in other countries. GestIC is a registered trademark of Microchip Technology Germany II GmbH & Co. KG, a subsidiary of Microchip Technology Inc., in other countries. All other trademarks mentioned herein are property of their respective companies. © 2019, Microchip Technology Incorporated, All Rights Reserved. ISBN: 978-1-5224-5206-5 Note the following details of the code protection feature on Microchip devices:
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- There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
- Microchip is willing to work with the customer who is concerned about the integrity of their code.
- Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as “unbreakable.” Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act. For information regarding Microchip’s Quality Management Systems, please visit www.microchip.com/quality.
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