MIC920

MIC920_06 MICREL | Alldatasheet

Document overview

• Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
• PDF pages: 11

Technical content

Features

• 80MHz gain bandwidth product
• 115MHz –3dB bandwidth
• 550µA supply current
• SC-70 or SOT-23-5 packages
• 3000V/µs slew rate
• Drives any capacitive load
• Unity gain stable

Applications

• Video
• Imaging
• Ultrasound
• Portable equipment
• Line drivers 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 Configuration IN+V– OUT IN– 4 5 A37 Part Identification SOT-23-5 or SC-70 Pin Description Pin Number Pin Name Pin Function

1 IN+ Noninverting Input

2 V– Negative Supply (Input)

3 IN– Inverting Input

4 OUT Output: Amplifier Output

5 V+ Positive Supply (Input)

IN+V– OUT IN– 4 5 SOT-23-5 or SC-70

Ordering Information

Ambient Temperature Package Standard Marking Pb-Free Marking MIC920BM5 A37 –40ºC to +85ºC SOT-23-5* MIC920BC5 A37 MIC920YC5 A37 –40ºC to +85ºC SC-70-5 * Contact factory for availability of SOT-23-5 package. Note: Underbar marking may not be to scale.

MIC920 Micrel, Inc. MIC920 2 March 2006 Absolute Maximum Ratings (Note 1) Operating Ratings (Note 2) Electrical Characteristics (±5V) V+ = +5V, V– = –5V, VCM = 0V, RL = 10MΩ; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +85°C; unless noted. Symbol Parameter Condition Min Typ Max Units VOS Input Offset Voltage 0.43 5 mV VOS V OS Temperature Coefficient 1 µV/°C IB Input Bias Current 0.26 0.6 µA IOS Input Offset Current 0.04 0.3 µA VCM Input Common-Mode Range CMRR > 72dB –3.25 +3.25 V CMRR Common-Mode Rejection Ratio –2.5V < V CM < +2.5V 75 85 dB PSRR Power Supply Rejection Ratio ±3.5V < V S < ±9V 95 104 dB AVOL Large-Signal Voltage Gain RL = 2k, VOUT = ±2V 65 82 dB RL = 100Ω, VOUT = ±1V 85 dB VOUT Maximum Output Voltage Swing positive, R L = 2kΩ +3.0 3.6 V negative, RL = 2kΩ –3.6 –3.0 V positive, RL = 200Ω +1.5 3.0 V negative, RL = 200Ω, Note 5 –2.5 –1.0 V GBW Unity Gain-Bandwidth Product C L = 1.7pF 67 MHz PM Phase Margin 32 ° BW –3dB Bandwidth Av = 1, RL = 1kΩ, CL = 1.7pF 100 MHz SR Slew Rate C=1.7pF, Gain=1, VOUT=5V, peak to peak, 1350 V/µs positive SR = 1190V/µs ISC Short-Circuit Output Current source 45 63 mA sink 20 45 mA IS Supply Current No Load 0.55 0.80 mA Input Voltage Noise f = 10kHz 11 V/ √Hz Input Current Noise f = 10kHz 0.7 A/ √Hz

Electrical Characteristics

V+ = +9V, V– = –9V, VCM = 0V, RL = 10MΩ; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +85°C; unless noted Symbol Parameter Condition Min Typ Max Units VOS Input Offset Voltage 0.3 5 mV VOS Input Offset Voltage 1 µV/°C Temperature Coefficient IB Input Bias Current 0.23 0.60 µA IOS Input Offset Current 0.04 0.3 µA VCM Input Common-Mode Range CMRR > 75dB –7.25 +7.25 V CMRR Common-Mode Rejection Ratio –6.5V < V CM < +6.5V 60 91 dB PSRR Power Supply Rejection Ratio ±3.5V < V S < ±9V 95 104 dB

MIC920 Micrel, Inc. Symbol Parameter Condition Min Typ Max Units AVOL Large-Signal Voltage Gain RL = 2k, VOUT = ±2V 75 84 dB RL = 100Ω, VOUT = ±1V 93 dB VOUT Maximum Output Voltage Swing positive, R L = 2kΩ 6.5 7.5 V negative, RL = 2kΩ –7.5 –6.2 V GBW Unity Gain-Bandwidth Product C L = 1.7pF 80 MHz PM Phase Margin 30 ° BW –3dB Bandwidth AV = 1, RL = 1kΩ, CL = 1.7pF 115 MHz SR Slew Rate C=1.7pF, Gain=1, VOUT=5V, peak to peak, 3000 V/µs negative SR = 2500V/µs ISC Short-Circuit Output Current source 50 65 mA sink 30 50 mA IS Supply Current No Load 0.55 0.8 mA Input Voltage Noise f = 10kHz 10 V/ √Hz Input Current Noise f = 10kHz 0.8 A/ √Hz Note 1. Exceeding the absolute maximum rating may damage the device. Note 2. The device is not guaranteed to function outside its operating rating. Note 3. Exceeding the maximum differential input voltage will damage the input stage and degrade performance (in particular, input bias current is likely to change). Note 5. Output swing limited by the maximum output sink capability, refer to the short-circuit current vs. temperature graph in “Typical Characteristics.”

MIC920 Micrel, Inc. MIC920 4 March 2006 Test Circuits 2k10k 10k 10k 0.1µF 0.1µF 0.1µF 10µF 50Ω 50Ω 0.1µF 10µFAll resistors: 1% metal film Output Input Input MIC920 4 BNC BNC BNC PSRR vs. Frequency R2 4k 0.1µF 10µF 0.1F 10µF10pF 10pF MIC920 4 BNC R4 27k R3 27kR1 20Ω 20Ω 100pF To Dynamic Analyzer Noise Measurement 0.1µF 10µF 0.1µF 10µF MIC920 4 BNC R7c 2k R7b 200Ω R7a 100Ω Input 200k 250Ω Output R1 5kBNC All resistors 1% V V R2 R2 R R4 OUT ERROR= + + + +   1 5 CMRR vs. Frequency VIN MIC920 4 300Ω 50Ω VOUT FET Probe 1k CL 0.1µµF 10µF 0.1µF 10µF Closed Loop Frequency Response Measurement

MIC920 Micrel, Inc. Typical Characteristics 0.9 0.95 1.05 1.1 1.15 1.2 1.25 -40 -20 0 20 40 60 80 100 )Vm(EGATLOVTESFFO TEMPERATURE (°C) Offset Voltage vs. Temperature V± = ±2.5V V± = ±5V V± = ±9V 0.30 0.35 0.40 0.45 0.50 0.55 0.60 -40 -20 0 20 40 60 80 100 )Am(TNERRUCYLPPUS TEMPERATURE (°C) Supply Current vs. Temperature V± = ±2.5V V± = ±9V V± = ±5V 0.40 0.42 0.44 0.46 0.48 0.50 0.52 0.54 0.56 0.58 0.60 0.62 )Am(TNERRUCYLPPUS SUPPLY VOLTAGE (V) Supply Current vs. Supply Voltage –40°C +85°C +25°C 0.2 0.4 0.6 0.8 1.2 1.4 1.6 1.8 2.2 -900 -540 -180 180 540 900 )Vm(EGATLOVTESFFO COMMON-MODE VOLTAGE (V) Offset Voltage vs. Common-Mode Voltage –40°C +85°C +25°C V± = ±2.5V 0.2 0.4 0.6 0.8 1.2 1.4 1.6 1.8 2.2 04.3- 27.2- 40.2- 63.1- 86.0- 86.0 63.1 40.2 27.2 04.3 )Vm(EGATLOVTESFFO COMMON-MODE VOLTAGE (V) Offset Voltage vs. Common-Mode Voltage –40°C +85°C +25°C V± = ±5V 0.2 0.4 0.6 0.8 1.2 1.4 1.6 1.8 2.2 04.7- 29.5- 44.4- 69.2- 84.1- 84.1 69.2 44.4 29.5 04.7 )Vm(EGATLOVTESFFO COMMON-MODE VOLTAGE (V) Offset Voltage vs. Common-Mode Voltage –40°C +85°C +25°C V± = ±9V )Am(TNERRUCTIUCRIC-TROHS SUPPLY VOLTAGE (V) Short-Circuit Current vs. Supply Voltage (Sourcing) –40°C 85°C 25°C )Am(TNERRUCTIUCRIC-TROHS SUPPLY VOLTAGE (V) Short-Circuit Current vs. Supply Voltage (Sinking) –40°C 85°C 25°C 61- 42- 23- 04- 84- 65- 46- 27- 08- )V(EGATLOVTUOTUO OUTPUT CURRENT (mA) Output Voltage vs. Output Current (Sourcing) –40°C 85°C 25°C V± = ±9V -10 )V(EGATLOVTUOTUO OUTPUT CURRENT (mA) Output Voltage vs. Output Current (Sinking) –40°C 85°C 25°C V± = ±9V -5.0 -4.5 -4.0 -3.5 -3.0 -2.5 -2.0 -1.5 -1.0 -0.5 0.5 0.54 5.04 0.63 5.13 0.72 5.22 0.81 5.31 0.9 5.4 )V(EGATLOVTUPTUO OUTPUT CURRENT (mA) Output Voltage vs. Output Current (Sinking) 25°C 85°C –40°C V± = ±5V 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 61- 42- 23- 04- 84- 65- 46- 27- 08- )V(EGATLOVTUPTUO OUTPUT CURRENT (mA) Output Voltage vs. Output Current (Sourcing) –40°C 85°C 25°C V± = ±5V

MIC920 Micrel, Inc. MIC920 6 March 2006 -50 -40 -30 -20 -10 1E+6 1E+7 1E+82E+8 )Bd(NIAGPOOL-DESOLC FREQUENCY (Hz) Closed-Loop Gain vs. Frequency V± = ±9V Av = 1 1M 10M 100M 1000pF 800pF 600pF 100pF 200pF 400pF 1.7pF -50 -40 -30 -20 -10 1E+6 10E+6 100E+6200E+6 )Bd(NIAGPOOL-DESOLC FREQUENCY (Hz) Closed-Loop Gain vs. Frequency V± = ±5V Av = 1 1M 100M10M 1000pF 800pF 600pF 400pF 200pF 0100pF 85)zHM(HTDIWDNABNIAG Gain Bandwidth and Phase Margin vs. Supply Voltage 0 1 2 3 4 5 6 7 8 9 10 (NIGRAMESAHP °) SUPPLY VOLTAGE (±V) Phase Margin Gain Bandwidth 0 70)zHM(HTDIWDNABNIAG Gain Bandwidth and Phase Margin vs. Load 0 200 400 600 800 1000 (NIGRAMESAHP °) CAPACITIVE LOAD (pF) Phase Margin Gain Bandwidth V± = ±5V 90)zHM(HTDIWDNABNIAG Gain Bandwidth and Phase Margin vs. Load 0 200 400 600 800 1000 (NIGRAMESAHP °) CAPACITIVE LOAD (pF) Phase Margin Gain Bandwidth V± = ±9V -25 -20 -15 -10 1E+6 10E+6 100E+6200E+6 )Bd(NIAG FREQUENCY (Hz) Closed-Loop Frequency Response Av =–1 R+ = RI = 475Ω ±9.0V ±2.5V ±5.0V 100M1M 10M -50 -40 -30 -20 -10 1x106 10x106 100x106200x106 )Bd(NIAGPOOL-NEPO FREQUENCY (Hz) Open-Loop Gain vs. Frequency V± = ±5V 100M10M1M 1.7pF 50pF 121pF 471pF 200pF 1000pF -50 -40 -30 -20 -10 1x106 10x106 100x106200x106 )Bd(NIAGPOOL-NEPO FREQUENCY (Hz) Open-Loop Gain vs. Frequency V± = ±9V 100M10M1M 1.7pF 50pF 121pF 471pF 200pF 1000pF -100 -80 -60 -40 -20 100)Bd(HTDIWDNABNIAG Open-Loop Frequency Response -225 -180 -135 -90 -45 135 180 225 (NIGRAMESAHP °) CAPACITIVE LOAD (pF) Phase Gain V± = ±5V 100Ω 100Ω No Load 100k 1M 10M 100M 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 -40 -20 0 20 40 60 80 100 (TNERRUCSAIB µ )A TEMPERATURE (°C) Bias Current vs. Temperature ±9V ±5V -25 -20 -15 -10 1E+6 10E+6 100E+6200E+6 )Bd(NIAG FREQUENCY (Hz) Closed-Loop Frequency Response Av = 2 RF = RI = 475Ω ±9.0V ±2.5V ±5.0V 100M1M 10M -100 -80 -60 -40 -20 100)Bd(HTDIWDNABNIAG Open-Loop Frequency Response -225 -180 -135 -90 -45 135 180 225 (NIGRAMESAHP °) CAPACITIVE LOAD (pF) Phase Gain V± = ±9V 100Ω 100Ω No Load 100k 1M 10M 100M

MIC920 Micrel, Inc. 500 1000 1500 2000 2500 3000 3500 0 200 400 600 800 1000 /V(ETARWELS µ )s LOAD CAPACITANCE (pF) Positive Slew Rate V± = ±9V 500 1000 1500 2000 2500 3000 0 200 400 600 800 1000 /V(ETARWELS µ )s LOAD CAPACITANCE (pF) Negative Slew Rate V± = ±9V 200 400 600 800 1000 1200 1400 0 200 400 600 800 1000 /V(ETARWELS µ )s LOAD CAPACITANCE (pF) Positive Slew Rate V± = ±5V 200 400 600 800 1000 1200 0 200 400 600 800 1000 /V(ETARWELS µ )s LOAD CAPACITANCE (pF) Negative Slew Rate V± = ±5V 100 100x100 1x103 10x103 100x103 1x106 10x106 )Bd(RRMC FREQUENCY (Hz) Common-Mode Rejection Ratio V± = ±9V 100 1k 10k 100k 1M 10M0 100 100x100 1x103 10x103 100x103 1x106 10x106 )Bd(RRMC FREQUENCY (Hz) Common-Mode Rejection Ratio V± = ±5V 100 1k 10k 100k 1M 10M 100 120)Bd(RRSP FREQUENCY (kHz) Negative PSRR vs. Frequency V± = ±5V 0.1 1 10 100 1k 10k 100 120)Bd(RRSP FREQUENCY (kHz) Negative PSRR vs. Frequency V± = ±9V 0.1 1 10 100 1k 10k 100 120)Bd(RRSP FREQUENCY (kHz) Positive PSRR vs. Frequency V± = ±5V 0.1 1 10 100 1k 10k 100 120)Bd(RRSP FREQUENCY (kHz) Positive PSRR vs. Frequency V± = ±9V 0.1 1 10 100 1k 10k 10 100 1000 10000 100000 zH/Vn(EGATLOVESION 2/1 ) FREQUENCY (Hz) Voltage Noise Density vs. Frequency 0.5 1.0 1.5 2.0 2.5 10 100 1000 10000 100000 zH/Ap(TNERRUCESION 2/1 ) FREQUENCY (Hz) Current Noise Density vs. Frequency

MIC920 Micrel, Inc. MIC920 8 March 2006 Functional Characteristics TIME (100ns/div) VCC = ±9.0V CL = 1.7µF Av = 1.0V/V Small Signal Response INPUT (50mV/div) OUTPUT (50mV/div) TIME (100ns/div) VCC = ±5.0V CL = 1.7µF Av = 1.0V/V Small Signal Response INPUT (50mV/div) OUTPUT (50mV/div) TIME (100ns/div) Small Signal Response INPUT (50mV/div) OUTPUT (50mV/div) VCC = ±9.0V CL = 100pF Av = +1 TIME (100ns/div) Small Signal Response INPUT (50mV/div) OUTPUT (50mV/div) VCC = ±5.0V CL = 100pF Av = +1V/V Small Signal Response TIME (100ns/div) VCC = ±9.0V CL = 1000pF Av = +1V/V INPUT (50mV/div) OUTPUT (50mV/div) Small Signal Response TIME (100ns/div) INPUT (50mV/div) OUTPUT (50mV/div) VCC = ±5.0V CL = 1000pF Av = +1V/V

MIC920 Micrel, Inc. Large Signal Response TIME (10ns/div) V = ±5V CL = 1.7pF Av = 1 Positive SR = 1350V/µsec Negative SR = 1190V/sec OUTPUT (2V/div) Large Signal Response TIME (10ns/div) V = ±9V CL = 1.7pF Av = 1 Positive SR = 3000V/µsec Negative SR = 2500V/µsec OUTPUT (2V/div) Large Signal Reponse TIME (50ns/div) V = ±5V CL = 100pF Av = 1 Positive SR = 373V/µsec Negative SR = 290V/sec OUTPUT (2V/div) Large Signal Response TIME (50ns/div) V = ±9V CL = 100pF Av = 1 Positive SR = 672V/µsec Negative SR = 424V/sec OUTPUT (2V/div) Large Signal Response TIME (100ns/div) V = ±5V CL = 1000pF Av = 1 Positive SR = 75V/µsec Negative SR = 41V/sec Output (2V/div) Large Signal Response TIME (100ns/div) V = ±9V CL = 1000pF Av = 1 Positive SR = 97V/µsec Negative SR = 60V/sec OUTPUT (2V/div)

MIC920 Micrel, Inc. MIC920 10 March 2006 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-capaci- tance 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 add- ing a small resistor (<100Ω) in series with the output. Feedback Resistor Selection Conventional op amp gain configurations and resistor selec- tion 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. Layout Considerations All high speed devices require careful PCB layout. The follow- ing 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 capaci- tors are located close to the device. Power Supply Bypassing Regular supply bypassing techniques are recommended. A 10µF capacitor in parallel with a 0.1µF capacitor on both the positive and negative supplies are ideal. For best perfor- mance 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 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 par-ticular CMRR will reduce. An MIC920 with no load, dissipates power equal to the qui- escent supply current × 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 pack- age has a thermal resistance of 450°C/W. Max. Allowable Power Dissipation = TJ(max) – TA(max) 450°C/W

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. © 2001 Micrel, Inc.