|
If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
Datasheet File OCR Text: |
MIC920 Micrel, Inc. MIC920 80MHz Low-Power SC-70 Op Amp 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 550A supply current, and features 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 possible to drive long coaxial cables. Features * * * * * * * 80MHz gain bandwidth product 115MHz -3dB bandwidth 550A supply current SC-70 or SOT-23-5 packages 3000V/s slew rate Drives any capacitive load Unity gain stable Applications * * * * * Video Imaging Ultrasound Portable equipment Line drivers Ordering Information Part Number Standard MIC920BM5 MIC920BC5 Marking A37 A37 MIC920YC5 A37 Pb-Free Marking Ambient Temperature -40C to +85C -40C to +85C Package SOT-23-5* SC-70-5 * Contact factory for availability of SOT-23-5 package. Note: Underbar marking may not be to scale. Pin Configuration IN- V- IN+ 3 Functional Pinout Part Identification IN- 3 V- IN+ 2 1 2 1 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. * 2180 Fortune Drive * San Jose, CA 95131 * USA * tel + 1 (408) 944-0800 * fax + 1 (408) 474-1000 * http://www.micrel.com March 2006 1 MIC920 MIC920 Micrel, Inc. Absolute Maximum Ratings (Note 1) Supply Voltage (VV+ - VV-) ........................................... 20V Differentail Input Voltage (VIN+ - VIN-) ........... 4V, Note 3 Input Common-Mode Range (VIN+, VIN-) ............VV+ to VV- Lead Temperature (soldering, 5 sec.) ........................ 260C Storage Temperature (TS) ......................................... 150C ESD Rating, Note 4 ................................................... 1.5kV Operating Ratings (Note 2) Supply Voltage (VS) .........................................2.5V to 9V Junction Temperature (TJ) .......................... -40C to +85C Package Thermal Resistance.............................................. SOT-23-5 ........................................................... 260C/W SC-70-5 ............................................................. 450C/W Electrical Characteristics (5V) Symbol VOS VOS IB IOS V+ = +5V, V- = -5V, VCM = 0V, RL = 10M; TJ = 25C, bold values indicate -40C TJ +85C; unless noted. Parameter Condition Min Input Offset Voltage VOS 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 CMRR > 72dB 3.5V < VS < 9V -2.5V < VCM < +2.5V RL = 2k, VOUT = 2V positive, RL = 2k -3.25 75 95 65 +3.0 +1.5 85 104 82 85 3.6 -3.6 3.0 -2.5 67 32 100 1350 45 20 63 45 0.55 11 0.7 0.80 -1.0 -3.0 Typ 0.43 1 0.26 0.04 0.6 0.3 +3.25 Max 5 Units mV V/C A A V dB dB dB dB V V V V MHz MHz V/s mA mA mA V/Hz A/Hz VCM CMRR PSRR AVOL VOUT RL = 100, VOUT = 1V negative, RL = 2k positive, RL = 200 GBW PM BW SR ISC IS Unity Gain-Bandwidth Product Phase Margin -3dB Bandwidth Slew Rate Short-Circuit Output Current Supply Current Input Voltage Noise Input Current Noise CL = 1.7pF negative, RL = 200, Note 5 C=1.7pF, Gain=1, VOUT=5V, peak to peak, positive SR = 1190V/s source sink No Load f = 10kHz f = 10kHz Av = 1, RL = 1k, CL = 1.7pF Electrical Characteristics Symbol VOS VOS IB V+ = +9V, V- = -9V, VCM = 0V, RL = 10M; TJ = 25C, bold values indicate -40C TJ +85C; unless noted Parameter Condition Min 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 3.5V < VS < 9V -6.5V < VCM < +6.5V -7.25 60 95 91 104 Typ 0.3 1 0.23 0.04 0.60 0.3 +7.25 Max 5 Units mV V/C A A V dB dB IOS VCM CMRR PSRR MIC920 2 March 2006 MIC920 Symbol AVOL VOUT GBW PM BW SR ISC IS 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 RL = 2k, VOUT = 2V positive, RL = 2k RL = 100, VOUT = 1V Min 75 6.5 Typ 84 93 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/s mA mA mA V/Hz A/Hz CL = 1.7pF negative, RL = 2k C=1.7pF, Gain=1, VOUT=5V, peak to peak, negative SR = 2500V/s source sink No Load f = 10kHz f = 10kHz AV = 1, RL = 1k, CL = 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." March 2006 3 MIC920 MIC920 Micrel, Inc. V+ 10F V+ Test Circuits Input BNC 50 0.1F 10k 3 0.1F R2 5k 10F 2k 5 10k 10k 1 MIC920 2 4 BNC Input BNC R1 5k R7c 2k R7b 200 R7a 100 3 5 0.1F 4 BNC Output 1 MIC920 2 Output 50 0.1F R6 5k R3 200k R4 250 R5 5k 10F Input BNC 0.1F 50 0.1F All resistors 1% V- All resistors: 1% metal film 10F V- R2 R2 + R 5 + R4 VOUT = VERROR 1 + + R1 R7 PSRR vs. Frequency CMRR vs. Frequency 100pF R2 4k V+ 10F 3 V+ 10F 10pF R1 20 R3 27k S1 S2 5 0.1F 4 3 5 0.1F 4 BNC 1 MIC920 2 R5 20 R4 27k 10pF 0.1F To Dynamic Analyzer VIN 1 MIC920 2 300 VOUT FET Probe 0.1F 50 1k CL 10F 10F V- V- Noise Measurement Closed Loop Frequency Response Measurement MIC920 4 March 2006 MIC920 Micrel, Inc. Typical Characteristics Offset Voltage vs. Temperature V = 2.5V 1.25 OFFSET VOLTAGE (mV) 1.2 0.60 SUPPLY CURRENT (mA) Supply Current vs. Temperature V = 9V V = 5V V = 2.5V 1.15 1.1 V = 5V V = 9V 0.50 0.45 0.40 0.35 SUPPLY CURRENT (mA) 0.55 1.05 1 0.95 0.9 -40 -20 0 20 40 60 80 100 TEMPERATURE C) ( 0.30 -40 -20 0 20 40 60 80 100 TEMPERATURE C) ( 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 Supply Current vs. Supply Voltage +85C +25C -40C 3.8 5.1 6.4 7.7 SUPPLY VOLTAGE (V) 9 -3.40 -2.72 -2.04 -1.36 -0.68 0 0.68 1.36 2.04 2.72 3.40 COMMON-MODE VOLTAGE (V) 84 80 76 72 68 64 60 56 52 48 44 40 2.0 Short-Circuit Current vs. Supply Voltage (Sourcing) -40C 25C 85C 3.4 4.8 6.2 7.6 9.0 SUPPLY VOLTAGE (V) 17 20 23 26 29 32 35 38 25C 85C 41 44 47 -40C 50 2.0 3.4 4.8 6.2 7.6 9.0 SUPPLY VOLTAGE (V) Short-Circuit Current vs. Supply Voltage (Sinking) SHORT-CIRCUIT CURRENT (mA) SHORT-CIRCUIT CURRENT (mA) 45.0 40.5 36.0 31.5 27.0 22.5 18.0 13.5 9.0 4.5 0 0 -8 -16 -24 -32 -40 -48 -56 -64 -72 -80 OUTPUT CURRENT (mA) OUTPUT CURRENT (mA) March 2006 5 50 45 40 35 30 25 20 15 10 5 0 0.5 85C 0 -0.5 -1.0 -1.5 -2.0 25C -2.5 -3.0 -3.5 -4.0 -4.5 -5.0 Output Voltage vs. Output Current (Sinking) V = 5V -40C 11 10 9 8 7 6 5 4 3 2 1 0 Output Voltage vs. Output Current (Sourcing) V = 9V -40C 25C 85C 1 25C 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 OUTPUT VOLTAGE (V) OUTOUT VOLTAGE (V) OUTOUT VOLTAGE (V) 0 -8 -16 -24 -32 -40 -48 -56 -64 -72 -80 5.5 5.0 4.5 4.0 85C 3.5 3.0 2.5 -40C 2.0 1.5 1.0 0.5 0 OUTPUT VOLTAGE (V) -7.40 -5.92 -4.44 -2.96 -1.48 0 1.48 2.96 4.44 5.92 7.40 2.2 2 V = 2.5V 1.8 1.6 -40C 1.4 1.2 +25C 1 0.8 0.6 0.4 0.2 +85C 0 -900 -540 -180 180 540 900 COMMON-MODE VOLTAGE (V) 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 Offset Voltage vs. Common-Mode Voltage V = 5V -40C +25C +85C 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 Offset Voltage vs. Common-Mode Voltage V = 9V OFFSET VOLTAGE (mV) OFFSET VOLTAGE (mV) OFFSET VOLTAGE (mV) -40C +25C +85C COMMON-MODE VOLTAGE (V) Output Voltage vs. Output Current (Sourcing) V = 5V 25C OUTPUT CURRENT (mA) Output Voltage vs. Output Current (Sinking) V = 9V 85C -40C OUTPUT CURRENT (mA) MIC920 MIC920 Micrel, Inc. 0.35 BIAS CURRENT (A) 0.30 0.25 0.20 0.15 0.10 0.05 Bias Current vs. Temperature 9V 0.00 -40 -20 0 20 40 60 80 100 TEMPERATURE C) ( GAIN (dB) GAIN (dB) 5V 25 20 15 10 5 9.0V 0 -5 5.0V -10 2.5V -15 Av = -1 -20 R+ = R = 475 I -25 1E+6 10E+6 100E+6 200E+6 1M 100M 10M FREQUENCY (Hz) Closed-Loop Frequency Response 25 20 15 10 5 9.0V 0 5.0V -5 2.5V -10 -15 Av = 2 R = RI = 475 -20 F -25 1E+6 10E+6 100E+6 200E+6 1M 100M 10M FREQUENCY (Hz) Closed-Loop Frequency Response 50 40 30 20 10 400pF 200pF 0 0 100pF -10 1000pF 800pF -20 600pF -30 V = 5V -40 Av = 1 -50 1E+6 10E+6 100E+6 200E+6 100M 1M 10M FREQUENCY (Hz) Closed-Loop Gain vs. Frequency 50 40 30 20 1.7pF 10 200pF 0 100pF -10 1000pF 800pF -20 600pF 400pF -30 V = 9V -40 Av = 1 -50 1E+6 1E+7 1E+8 E+8 2 10M 1M 100M FREQUENCY (Hz) Closed-Loop Gain vs. Frequency 50 V = 5V 40 30 20 121pF 50pF 10 1.7pF 0 1000pF 471pF -10 200pF -20 -30 -40 -50 10M 100M 1M 10x106 100x106 6 200x10 1x106 FREQUENCY (Hz) Open-Loop Gain vs. Frequency CLOSED-LOOP GAIN (dB) CLOSED-LOOP GAIN (dB) OPEN-LOOP GAIN (dB) 50 V = 9V 40 30 20 121pF 50pF 10 1.7pF 0 1000pF 471pF -10 200pF -20 -30 -40 -50 10M 100M 1M 1x106 10x106 100x106 6 200x10 FREQUENCY (Hz) Open-Loop Gain vs. Frequency 85 GAIN BANDWIDTH (MHz) 80 75 70 65 60 55 Gain Bandwidth and Phase Margin vs. Supply Voltage Phase Margin 37 PHASE MARGIN () 35 33 31 29 27 70 GAIN BANDWIDTH (MHz) 60 50 40 30 20 10 Gain Bandwidth and Phase Margin vs. Load V = 5V 50 PHASE MARGIN () 45 OPEN-LOOP GAIN (dB) Phase Margin 40 35 30 25 Gain Bandwidth Gain Bandwidth 25 50 0 1 2 3 4 5 6 7 8 9 10 SUPPLY VOLTAGE V) ( 0 0 20 200 400 600 800 1000 CAPACITIVE LOAD (pF) 90 Gain Bandwidth and Phase Margin vs. Load V = 9V 55 G A IN B A N D W ID T H (d B ) 100 80 60 40 20 0 -20 -40 -60 -80 Open-Loop Frequency Response V = 5V 100 No Load Gain 100 225 135 GAIN BANDWIDTH (MHz) PHASE MARGIN () 60 50 40 30 20 10 0 0 45 Phase Margin 40 35 Gain Bandwidth 30 25 Phase 90 45 0 -45 -90 -135 -180 -225 1M 10M 100M CAPACITIVE LOAD (pF) 20 200 400 600 800 1000 CAPACITIVE LOAD (pF) -100 100k MIC920 6 PHASE M ARG IN () March 2006 PHASE MARGIN () 70 GAIN BANDWIDTH (dB) 80 50 180 100 80 60 40 20 0 -20 -40 -60 -80 -100 100k Open-Loop Frequency Response V = 9V 225 180 100 135 Phase 90 No Load 45 0 Gain 100 -45 -90 -135 -180 -225 1M 10M 100M CAPACITIVE LOAD (pF) MIC920 Micrel, Inc. 120 100 PSRR (dB) 80 60 40 20 0 0.1 1 Positive PSRR vs. Frequency V = 5V 120 100 PSRR (dB) Negative PSRR vs. Frequency V = 5V 120 100 PSRR (dB) Positive PSRR vs. Frequency V = 9V 80 60 40 20 80 60 40 20 10 100 1k FREQUENCY (kHz) 10k 0 0.1 1 10 100 1k FREQUENCY (kHz) 10k 0 0.1 1 10 100 1k FREQUENCY (kHz) 10k 120 100 PSRR (dB) 80 60 40 20 0 0.1 Negative PSRR vs. Frequency V = 9V 1 10 100 1k FREQUENCY (kHz) 10k 100 90 80 70 60 50 40 30 20 10 0 100x100 100 Common-Mode Rejection Ratio V = 5V 1x103 1k 10x103 100x103 1x106 10x106 10k 100k 1M 10M FREQUENCY (Hz) 100 90 80 70 60 50 40 30 20 10 0 100x100 100 Common-Mode Rejection Ratio V = 9V CMRR (dB) CMRR (dB) 1x103 1k 10x103 100x103 1x106 10x106 10k 100k 1M 10M FREQUENCY (Hz) 1400 1200 Positive Slew Rate V = 5V 1200 SLEW RATE (V/s) 1000 800 600 400 200 0 0 Negative Slew Rate V = 5V 3500 3000 SLEW RATE (V/s) 2500 2000 1500 1000 500 Positive Slew Rate V = 9V SLEW RATE (V/s) 1000 800 600 400 200 0 0 200 400 600 800 1000 LOAD CAPACITANCE (pF) 200 400 600 800 1000 LOAD CAPACITANCE (pF) 0 0 200 400 600 800 1000 LOAD CAPACITANCE (pF) 3000 Negative Slew Rate V = 9V 70 NOISE VOLTAGE (nV/Hz1/2) 60 50 40 30 20 10 0 10 Voltage Noise Density vs. Frequency 2.5 NOISE CURRENT (pA/Hz1/2) 2.0 1.5 1.0 0.5 0 10 Current Noise Density vs. Frequency SLEW RATE (V/s) 2500 2000 1500 1000 500 0 0 200 400 600 800 1000 LOAD CAPACITANCE (pF) 100 1000 10000 100000 FREQUENCY (Hz) 100 1000 10000 100000 FREQUENCY (Hz) March 2006 7 MIC920 MIC920 Micrel, Inc. Functional Characteristics Small Signal Response Small Signal Response INPUT (50mV/div) OUTPUT (50mV/div) TIME (100ns/div) OUTPUT (50mV/div) INPUT (50mV/div) VCC = 9.0V CL = 1.7F Av = 1.0V/V VCC = 5.0V CL = 1.7F Av = 1.0V/V TIME (100ns/div) Small Signal Response Small Signal Response INPUT (50mV/div) OUTPUT (50mV/div) OUTPUT (50mV/div) INPUT (50mV/div) VCC = 9.0V CL = 100pF Av = +1 VCC = 5.0V CL = 100pF Av = +1V/V TIME (100ns/div) TIME (100ns/div) Small Signal Response Small Signal Response INPUT (50mV/div) INPUT (50mV/div) VCC = 9.0V CL = 1000pF Av = +1V/V VCC = 5.0V CL = 1000pF Av = +1V/V OUTPUT (50mV/div) TIME (100ns/div) OUTPUT (50mV/div) TIME (100ns/div) MIC920 8 March 2006 MIC920 Micrel, Inc. Large Signal Response V = 5V CL = 1.7pF Av = 1 Positive SR = 1350V/sec Negative SR = 1190V/sec Large Signal Response OUTPUT (2V/div) OUTPUT (2V/div) V = 9V CL = 1.7pF Av = 1 Positive SR = 3000V/sec Negative SR = 2500V/sec TIME (10ns/div) TIME (10ns/div) Large Signal Reponse V = 5V CL = 100pF Av = 1 Positive SR = 373V/sec Negative SR = 290V/sec OUTPUT (2V/div) Large Signal Response OUTPUT (2V/div) V = 9V CL = 100pF Av = 1 Positive SR = 672V/sec Negative SR = 424V/sec TIME (50ns/div) TIME (50ns/div) Large Signal Response V = 5V CL = 1000pF Av = 1 Positive SR = 75V/sec Negative SR = 41V/sec OUTPUT (2V/div) Large Signal Response Output (2V/div) V = 9V CL = 1000pF Av = 1 Positive SR = 97V/sec Negative SR = 60V/sec TIME (100ns/div) TIME (100ns/div) March 2006 9 MIC920 MIC920 Micrel, Inc. Power Supply Bypassing Regular supply bypassing techniques are recommended. A 10F capacitor in parallel with a 0.1F 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 resis-tance). Surface-mount ceramic capacitors are ideal. Thermal Considerations The SC70-5 package and the SOT-23-5 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 85C. The part can be operated up to the absolute maximum temperature rating of 125C, but between 85C and 125C performance will degrade, in par-ticular CMRR will reduce. An MIC920 with no load, dissipates power equal to the quiescent supply current x supply voltage PD(no load) = VV+ - VV- 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. PD(output stage) = VV+ - VOUT IOUT Total Power Dissipation = PD(no 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 450C/W. TJ(max) - TA(max) Max. Allowable Power Dissipation = 450C/W Applications 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. 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 effect of the load capacitance can be reduced by adding a small resistor (<100) in series with the output. 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 470 is ideal. To use the part as a follower, the output should be connected to input via a short wire. Layout Considerations All high speed devices require careful PCB layout. The following guidelines should be observed: Capacitance, par-ticularly 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. ( ) ( ) MIC920 10 March 2006 MIC920 Micrel, Inc. Package Information SOT-23-5 (M5) SC-70 (C5) MICREL INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL + 1 (408) 944-0800 FAX + 1 (408) 474-1000 WEB http://www.micrel.com This information furnished by Micrel in this data sheet is believed to be accurate and reliable. However no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser's use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser's own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. (c) 2001 Micrel, Inc. March 2006 11 MIC920 |
Price & Availability of MIC920BC5 |
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
[Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |