MIC920YC5-TR

MIC920 Micrel, Inc. MIC920 80MHz Low-Power SC-70 Op Amp General Description Features 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 550µA 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. • • • • • • • 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 Ordering Information Part Number Standard Marking MIC920BM5 A37 MIC920BC5 A37 Pb-Free MIC920YC5 Marking Ambient Temperature Package –40ºC to +85ºC SOT-23-5* –40ºC to +85ºC SC-70-5 A37 * Contact factory for availability of SOT-23-5 package. Note: Underbar marking may not be to scale. Functional Pinout Pin Configuration IN– V– IN+ 3 2 1 A37 IN– Part Identification 3 V– IN+ 2 1 4 5 4 5 OUT V+ OUT V+ SOT-23-5 or SC-70 SOT-23-5 or SC-70 Pin Description Pin Number Pin Name 1 IN+ Pin Function Noninverting Input 2 V– Negative Supply (Input) 3 IN– Inverting Input 4 OUT Output: Amplifier Output 5 V+ 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) Operating Ratings (Note 2) 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.) ........................ 260°C Storage Temperature (TS) ......................................... 150°C ESD Rating, Note 4 ................................................... 1.5kV Supply Voltage (VS) .........................................±2.5V to ±9V Junction Temperature (TJ) .......................... –40°C to +85°C Package Thermal Resistance.............................................. SOT-23-5 ........................................................... 260°C/W SC-70-5 ............................................................. 450°C/W 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 VOS Input Offset Voltage IB Input Bias Current VOS VOS Temperature Coefficient IOS Input Offset Current VCM Input Common-Mode Range CMRR Common-Mode Rejection Ratio PSRR Power Supply Rejection Ratio AVOL Large-Signal Voltage Gain VOUT Maximum Output Voltage Swing Condition Min Unity Gain-Bandwidth Product PM Phase Margin Max Units 5 mV 1 0.26 0.04 CMRR > 72dB –3.25 µV/°C 0.6 µA 0.3 µA +3.25 V –2.5V < VCM < +2.5V 75 85 dB 95 104 dB RL = 2k, VOUT = ±2V 65 82 dB 85 dB ±3.5V < VS < ±9V RL = 100Ω, VOUT = ±1V positive, RL = 2kΩ +3.0 positive, RL = 200Ω +1.5 negative, RL = 2kΩ GBW Typ 0.43 3.6 –3.6 negative, RL = 200Ω, Note 5 Av = 1, RL = 1kΩ, CL = 1.7pF V –1.0 V 3.0 –2.5 CL = 1.7pF V –3.0 V 67 MHz 32 ° 100 MHz 1350 V/µs 63 mA BW –3dB Bandwidth SR Slew Rate C=1.7pF, Gain=1, VOUT=5V, peak to peak, positive SR = 1190V/µs ISC Short-Circuit Output Current source 45 sink 20 IS Supply Current No Load 0.55 Input Voltage Noise f = 10kHz 11 V/√Hz Input Current Noise f = 10kHz 0.7 A/√Hz 45 mA 0.80 mA 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 VOS Input Offset Voltage VOS Condition Min Input Offset Voltage Temperature Coefficient Typ Max 0.3 5 1 Units mV µV/°C Input Bias Current 0.23 0.60 µA IOS Input Offset Current 0.04 0.3 µA Input Common-Mode Range CMRR > 75dB CMRR Common-Mode Rejection Ratio PSRR Power Supply Rejection Ratio –6.5V < VCM < +6.5V IB VCM MIC920 ±3.5V < VS < ±9V 2 –7.25 +7.25 V 60 91 dB 95 104 dB March 2006 MIC920 Micrel, Inc. Symbol Parameter Condition Min Typ AVOL Large-Signal Voltage Gain RL = 2k, VOUT = ±2V 75 84 dB 93 dB VOUT Maximum Output Voltage Swing positive, RL = 2kΩ 6.5 GBW Unity Gain-Bandwidth Product PM Phase Margin RL = 100Ω, VOUT = ±1V negative, RL = 2kΩ 7.5 –7.5 CL = 1.7pF AV = 1, RL = 1kΩ, CL = 1.7pF Max Units V –6.2 V 80 MHz 30 ° 115 MHz 3000 V/µs 65 mA BW –3dB Bandwidth SR Slew Rate C=1.7pF, Gain=1, VOUT=5V, peak to peak, negative SR = 2500V/µs ISC Short-Circuit Output Current source 50 sink 30 IS Supply Current No Load 0.55 Input Voltage Noise f = 10kHz 10 V/√Hz Input Current Noise f = 10kHz 0.8 A/√Hz 50 mA 0.8 mA 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 4. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF. Note 5. 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. Test Circuits V+ 10µF V+ Input 0.1µF 50Ω BNC R2 5k 10µF 0.1µF 10k 10k 10k 2k 3 1 5 MIC920 4 BNC Input R1 5k BNC R7c 2k Output 1 R7b 200Ω R7a 100Ω 2 50Ω Input 3 5k R3 200k 50 All resistors: 1% metal film 0.1µF All resistors 1% MIC920 2 4 BNC Output 0.1µF R5 5k 10µF V– R4 250Ω  R2 R2 + R 5 + R4  VOUT = VERROR 1 + +   R1  R7 10µF V– PSRR vs. Frequency 100pF 0.1µF R6 0.1µF BNC 5 CMRR vs. Frequency V+ V+ 10µF 10pF R1 20Ω R3 27k S1 S2 R5 20Ω R2 4k 3 3 1 R4 27k 10µF 5 0.1µF MIC920 2 10pF 4 0.1F BNC To Dynamic Analyzer VIN 0.1µµF MIC920 2 300Ω 4 0.1µF 50Ω 1k VOUT FET Probe CL 10µF 10µF V– V– Closed Loop Frequency Response Measurement Noise Measurement MIC920 1 5 4 March 2006 MIC920 Micrel, Inc. Typical Characteristics 0.50 0.45 V± = ±9V 1 0.40 0.35 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) ( Offset Voltage vs. Common-Mode Voltage SHORT-CIRCUIT CURRENT (mA) 84 80 76 72 68 64 60 56 52 48 44 40 2.0 –40°C 25°C 85°C 3.4 4.8 6.2 7.6 9.0 SUPPLY VOLTAGE (V) Output Voltage vs. Output Current (Sinking) V± = ±5V –40°C 45.0 40.5 36.0 31.5 27.0 22.5 18.0 13.5 9.0 4.5 0 OUTPUT VOLTAGE (V) 0.5 85°C 0 -0.5 -1.0 -1.5 -2.0 25°C -2.5 -3.0 -3.5 -4.0 -4.5 -5.0 OUTPUT CURRENT (mA) March 2006 Offset Voltage vs. Common-Mode Voltage OFFSET VOLTAGE (mV) V± = ±5V –40°C +25°C 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 -3.40 -2.72 -2.04 -1.36 -0.68 0 0.68 1.36 2.04 2.72 3.40 +85°C COMMON-MODE VOLTAGE (V) Short-Circuit Current vs. Supply Voltage (Sinking) 17 20 23 26 29 32 35 38 25°C 85°C 41 44 47 –40°C 50 2.0 3.4 4.8 6.2 7.6 9.0 SUPPLY VOLTAGE (V) SHORT-CIRCUIT CURRENT (mA) Short-Circuit Current vs. Supply Voltage (Sourcing) 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 11 10 9 8 7 6 5 4 3 2 1 0 OUTOUT VOLTAGE (V) OFFSET VOLTAGE (mV) 2.2 2 V± = ±2.5V 1.8 1.6 –40°C 1.4 1.2 +25°C 1 0.8 0.6 0.4 0.2 +85°C 0 -900 -540 -180 180 540 900 COMMON-MODE VOLTAGE (V) Output Voltage vs. Output Current (Sourcing) V± = ±9V 25°C –40°C 85°C OUTPUT CURRENT (mA) 5 +85°C +25°C –40°C 3.8 5.1 6.4 7.7 SUPPLY VOLTAGE (V) 9 Offset Voltage vs. Common-Mode Voltage V± = ±9V –40°C +25°C +85°C -7.40 -5.92 -4.44 -2.96 -1.48 0 1.48 2.96 4.44 5.92 7.40 1.05 V± = ±2.5V COMMON-MODE VOLTAGE (V) Output Voltage vs. Output Current (Sourcing) 5.5 5.0 4.5 4.0 85°C 3.5 3.0 2.5 –40°C 2.0 1.5 1.0 0.5 0 V± = ±5V 25°C 0 -8 -16 -24 -32 -40 -48 -56 -64 -72 -80 V± = ±5V OFFSET VOLTAGE (mV) 1.1 OUTPUT CURRENT (mA) Output Voltage vs. Output Current (Sinking) 1 25°C 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 V± = ±9V 85°C –40°C 50 45 40 35 30 25 20 15 10 5 0 V± = ±5V SUPPLY CURRENT (mA) 0.55 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 OUTPUT VOLTAGE (V) V± = ±2.5V V± = ±9V 0 -8 -16 -24 -32 -40 -48 -56 -64 -72 -80 OFFSET VOLTAGE (mV) 1.2 1.15 0.60 OUTOUT VOLTAGE (V) 1.25 Supply Current vs. Temperature SUPPLY CURRENT (mA) Offset Voltage vs. Temperature OUTPUT CURRENT (mA) MIC920 MIC920 Micrel, Inc. 0.00 -40 -20 0 20 40 60 80 100 TEMPERATURE °C) ( 75 60 50 Phase Margin 40 30 20 10 0 0 MIC920 Gain Bandwidth 30 25 20 200 400 600 800 1000 CAPACITIVE LOAD (pF) Open-Loop Frequency Response V± = ±5V 100Ω 60 40 No Load 20 0 Gain -20 100Ω 45 0 -45 -40 -90 -60 -135 -180 -80 -100 100k -225 1M 10M 100M CAPACITIVE LOAD (pF) 6 Phase Margin 30 20 35 30 Gain Bandwidth 10 40 25 20 200 400 600 800 1000 CAPACITIVE LOAD (pF) 0 0 Open-Loop Frequency Response 180 135 50 45 40 225 Phase 90 V± = ±5V 50 Gain Bandwidth 25 50 0 1 2 3 4 5 6 7 8 9 10 SUPPLY VOLTAGE ±V) ( 80 35 27 55 100 40 35 60 29 60 50 45 70 31 65 G A IN B A N D W ID T H (d B ) GAIN BANDWIDTH (MHz) 70 37 33 70 55 PHASE MARGIN (°) V± = ±9V 80 Phase Margin 80 GAIN BANDWIDTH (MHz) OPEN-LOOP GAIN (dB) 85 Gain Bandwidth and Phase Margin vs. Load 90 Gain Bandwidth and Phase Margin vs. Load Gain Bandwidth and Phase Margin vs. Supply Voltage Open-Loop Gain vs. Frequency 50 V± = ±9V 40 30 20 121pF 50pF 10 1.7pF 0 1000pF 471pF -10 200pF -20 -30 -40 -50 6 6 10M6 100M 1M 6 1x10 10x10 100x10 200x10 FREQUENCY (Hz) 50 V± = ±5V 40 30 20 121pF 50pF 10 1.7pF 0 1000pF 471pF -10 200pF -20 -30 -40 -50 6 6 10M6 100M 1M 6 10x10 100x10 200x10 1x10 FREQUENCY (Hz) OPEN-LOOP GAIN (dB) 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 2E+8 10M 1M 100M FREQUENCY (Hz) CLOSED-LOOP GAIN (dB) CLOSED-LOOP GAIN (dB) 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) Open-Loop Gain vs. Frequency Closed-Loop Gain vs. Frequency Closed-Loop Gain vs. Frequency PHASE MARGIN (°) 0.05 GAIN BANDWIDTH (MHz) 0.10 GAIN BANDWIDTH (dB) ±9V PHASE MARGIN (°) 0.15 ±5V GAIN (dB) BIAS CURRENT (µA) 0.20 25 20 15 10 5 ±9.0V 0 ±5.0V -5 ±2.5V -10 -15 Av = 2 R = RI = 475Ω -20 F -25 1E+6 10E+6 100E+6 200E+6 1M 100M 10M FREQUENCY (Hz) GAIN (dB) 25 20 15 10 5 ±9.0V 0 -5 ±5.0V -10 ±2.5V -15 Av = –1 -20 R+ = R = 475Ω I -25 1E+6 10E+6 100E+6 200E+6 1M 100M 10M FREQUENCY (Hz) 0.30 0.25 Closed-Loop Frequency Response Closed-Loop Frequency Response 100 80 60 40 20 0 -20 -40 -60 -80 -100 100k 225 180 100Ω 135 Phase 90 No Load 45 0 Gain 100Ω -45 -90 -135 -180 -225 1M 10M 100M CAPACITIVE LOAD (pF) V± = ±9V PHASE MARGIN (°) Bias Current vs. Temperature PHASE M ARG IN (°) 0.35 March 2006 MIC920 Micrel, Inc. Positive PSRR vs. Frequency 120 60 40 80 60 40 20 10k 0 0.1 10k 100 90 80 70 60 50 40 30 20 10 0 100x10 100 0 Negative PSRR vs. Frequency V± = ±9V 40 20 10 100 1k FREQUENCY (kHz) Positive Slew Rate V± = ±5V SLEW RATE (V/µs) 600 400 200 Negative Slew Rate V± = ±9V SLEW RATE (V/µs) 1x10 1k3 10x10 10k3 100x10 100k3 1x10 1M6 10x10 10M6 FREQUENCY (Hz) Negative Slew Rate V± = ±5V Voltage Noise Density vs. Frequency 60 0 10 3000 0 0 200 400 600 800 1000 LOAD CAPACITANCE (pF) 10x10 10k3 100x10 100k3 1x10 1M6 10x10 10M6 FREQUENCY (Hz) Positive Slew Rate V± = ±9V 2.5 200 400 600 800 1000 LOAD CAPACITANCE (pF) Current Noise Density vs. Frequency 2.0 1.5 1.0 0.5 10 200 400 600 800 1000 LOAD CAPACITANCE (pF) 3500 1x10 1k3 500 20 500 V± = ±9V 1000 200 30 1000 Common-Mode Rejection Ratio 1500 40 1500 10k 2000 400 70 10 100 1k FREQUENCY (kHz) 2500 600 0 0 1 100 90 80 70 60 50 40 30 20 10 0 100x10 100 0 V± = ±5V 50 2000 March 2006 Common-Mode Rejection Ratio 800 200 400 600 800 1000 LOAD CAPACITANCE (pF) 2500 0 0 1200 0 0.1 10k 1000 800 3000 10 100 1k FREQUENCY (kHz) NOISE VOLTAGE (nV/Hz1/2) SLEW RATE (V/µs) 1 1000 0 0 1 CMRR (dB) PSRR (dB) 10 100 1k FREQUENCY (kHz) 60 1200 20 CMRR (dB) 1 80 1400 40 20 100 0 0.1 60 SLEW RATE (V/µs) 120 80 NOISE CURRENT (pA/Hz1/2) 0 0.1 V± = ±9V 100 PSRR (dB) 80 Positive PSRR vs. Frequency 120 V± = ±5V 100 PSRR (dB) PSRR (dB) 120 V± = ±5V 100 Negative PSRR vs. Frequency 100 1000 10000 100000 FREQUENCY (Hz) 7 0 10 100 1000 10000 100000 FREQUENCY (Hz) MIC920 MIC920 Micrel, Inc. Functional Characteristics Small Signal Response INPUT (50mV/div) VCC = ±9.0V CL = 1.7µF Av = 1.0V/V TIME (100ns/div) TIME (100ns/div) Small Signal Response TIME (100ns/div) TIME (100ns/div) Small Signal Response Small Signal Response INPUT (50mV/div) VCC = ±9.0V CL = 1000pF Av = +1V/V VCC = ±5.0V CL = 1000pF Av = +1V/V OUTPUT (50mV/div) OUTPUT (50mV/div) INPUT (50mV/div) VCC = ±5.0V CL = 100pF Av = +1V/V OUTPUT (50mV/div) INPUT (50mV/div) VCC = ±9.0V CL = 100pF Av = +1 OUTPUT (50mV/div) INPUT (50mV/div) Small Signal Response TIME (100ns/div) MIC920 VCC = ±5.0V CL = 1.7µF Av = 1.0V/V OUTPUT (50mV/div) OUTPUT (50mV/div) INPUT (50mV/div) Small Signal Response TIME (100ns/div) 8 March 2006 MIC920 Micrel, Inc. Large Signal Response Large Signal Response OUTPUT (2V/div) OUTPUT (2V/div) V = ±5V CL = 1.7pF Av = 1 Positive SR = 1350V/µsec Negative SR = 1190V/sec V = ±9V CL = 1.7pF Av = 1 Positive SR = 3000V/µsec Negative SR = 2500V/µsec TIME (10ns/div) TIME (10ns/div) Large Signal Reponse Large Signal Response OUTPUT (2V/div) OUTPUT (2V/div) V = ±5V CL = 100pF Av = 1 Positive SR = 373V/µsec Negative SR = 290V/sec V = ±9V CL = 100pF Av = 1 Positive SR = 672V/µsec Negative SR = 424V/sec TIME (50ns/div) TIME (50ns/div) Large Signal Response Large Signal Response Output (2V/div) OUTPUT (2V/div) V = ±5V CL = 1000pF Av = 1 Positive SR = 75V/µsec Negative SR = 41V/sec V = ±9V CL = 1000pF Av = 1 Positive SR = 97V/µsec Negative SR = 60V/sec TIME (100ns/div) TIME (100ns/div) March 2006 9 MIC920 MIC920 Micrel, Inc. Applications Information 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 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 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 quiescent supply current × supply voltage 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 (