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MIC910 Micrel MIC910 135MHz Low-Power SOT-23-5 Op Amp General Description The MIC910 is a high-speed, unity-gain stable operational amplifier. It provides a gain-bandwidth product of 135MHz with a very low, 2.4mA supply current, and features the tiny SOT-23-5 package. Supply voltage range is from 2.5V to 9V, allowing the MIC910 to be used in low-voltage circuits or applications requiring large dynamic range. The MIC910 is stable driving any capacitative load and achieves excellent PSRR, making it much easier to use than most conventional high-speed devices. Low supply voltage , low power consumption, and small packing make the MIC910 ideal for portable equipment. The ability to drive capacitative loads also makes it possible to drive long coaxial cables. Features * * * * * 135MHz gain bandwidth product 2.4mA supply current SOT-23-5 package 270V/s slew rate drives any capacitive load Applications * * * * * Video Imaging Ultrasound Portable equipment Line drivers Ordering Information Part Number MIC910BM5 Junction Temp. Range -40C to +85C Package SOT-23-5 Pin Configuration IN+ 3 Functional Pinout V+ OUT 2 1 IN+ V+ OUT 2 1 Part Identification 3 A21 4 5 4 5 IN- V- IN- V- SOT-23-5 SOT-23-5 Pin Description Pin Number 1 2 3 4 5 Pin Name OUT V+ IN+ IN- V- Pin Function Output: Amplifier Output Positive Supply (Input) Noninverting Input Inverting Input Negative Supply (Input) Micrel, Inc. * 1849 Fortune Drive * San Jose, CA 95131 * USA * tel + 1 (408) 944-0800 * fax + 1 (408) 944-0970 * http://www.micrel.com June 2000 1 MIC910 MIC910 Micrel Absolute Maximum Ratings (Note 1) Supply Voltage (VV+ - VV-) ........................................... 20V Differentail Input Voltage (VIN+ - VIN-) .......... 8V, Note 4 Input Common-Mode Range (VIN+, VIN-) .......... VV+ to VV- Lead Temperature (soldering, 5 sec.) ....................... 260C Storage Temperature (TS) ........................................ 150C ESD Rating, Note 3 ................................................... 1.5kV Operating Ratings (Note 2) Supply Voltage (VS) ....................................... 2.5V to 9V Junction Temperature (TJ) ......................... -40C to +85C Package Thermal Resistance ............................... 260C/W Electrical Characteristics (5V) VV+ = +5V, VV- = -5V, VCM = 0V, VOUT = 0V; RL = 10M; TJ = 25C, bold values indicate -40C TJ +85C; unless noted. Symbol VOS VOS IB IOS VCM CMRR PSRR AVOL VOUT Parameter 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 Large-Signal Voltage Gain CMRR > 60dB -2.5V < VCM < +2.5V 5V < VS < 9V RL = 2k, VOUT = 2V RL = 200, VOUT = 2V Maximum Output Voltage Swing positive, RL = 2k negative, RL = 2k positive, RL = 200 negative, RL = 200 GBW BW SR IGND IGND Gain-Bandwidth Product -3dB Bandwidth Slew Rate Short-Circuit Output Current source sink Supply Current RL = 1k AV = 1, RL = 100 +3.0 +2.75 -3.25 70 60 74 70 60 60 +3.3 +3.0 90 81 71 71 3.5 -3.5 3.2 -2.8 125 192 230 72 25 2.4 3.5 4.1 -2.45 -2.2 -3.3 -3.0 Condition Min Typ 1 4 3.5 0.05 5.5 9 3 +3.25 Max 15 Units mV V/C A A A V dB dB dB dB dB dB V V V V V V V V MHz MHz V/s mA mA mA mA Electrical Characteristics VV+ = +9V, VV- = -9V, VCM = 0V, VOUT = 0V; RL = 10M; TJ = 25C, bold values indicate -40C TJ +85C; unless noted Symbol VOS VOS IB IOS Parameter Input Offset Voltage Input Offset Voltage Temperature Coefficient Input Bias Current Input Offset Current Condition Min Typ 1 4 3.5 0.05 5.5 9 3 Max 15 Units mV V/C A A A MIC910 2 June 2000 MIC910 Symbol VCM CMRR AVOL VOUT Parameter Input Common-Mode Range Common-Mode Rejection Ratio Large-Signal Voltage Gain Maximum Output Voltage Swing Condition CMRR > 60dB -6.5V < VCM < 6.5V RL = 2k, VOUT = 6V positive, RL = 2k negative, RL = 2k GBW SR IGND IGND Note 1. Note 2. Note 3. Note 4. Micrel Min -7.25 70 60 60 +7.2 +6.8 98 73 +7.4 -7.4 135 270 source sink Supply Current Exceeding the absolute maximum rating may damage the device. The device is not guaranteed to function outside its operating rating. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF. Exceeding the maximum differential input voltage will damage the input stage and degrade performance (in particular, input bias current is likely to increase. Typ Max +7.25 Units V dB dB dB V V -7.2 -6.8 V V MHz V/s mA mA Gain-Bandwidth Product Slew Rate Short-Circuit Output Current RL = 1k 90 32 2.5 3.7 4.3 mA mA Test Circuits VCC 10F VCC 50 BNC 0.1F R2 5k 10F Input 0.1F 10k 10k 50 BNC 2k 4 2 BNC BNC Input Output R1 5k R7c 2k R7b 200 R7a 100 R6 5k 4 2 0.1F 1 BNC MIC910 3 5 1 MIC910 3 5 Output 10k 0.1F 0.1F 50 Input 0.1F R3 200k R4 250 R5 5k VEE 10F All resistors 1% All resistors: 1% metal film VEE 10F R2 R2 + R 5 + R4 VOUT = VERROR 1 + + R1 R7 100pF VCC PSRR vs. Frequency 10pF R1 20 CMRR vs. Frequency 10F R2 4k R3 27k S1 S2 4 2 0.1F 1 BNC MIC910 3 5 To Dynamic Analyzer R5 20 R4 27k 0.1F 10pF VEE 10F Noise Measurement June 2000 3 MIC910 MIC910 Micrel Electrical Characteristics Supply Current vs. Supply Voltage 3.5 SUPPLY CURRENT (mA) Supply Current vs. Temperature 4.0 OFFSET VOLTAGE (mV) 2.5 Offset Voltage vs. Temperature VSUPPLY = 5V 2.0 SUPPLY CURRENT (mA) +85C 3.0 +25C 3.5 VSUPPLY = 9V VSUPPLY = 5V 3.0 2.5 -40C 1.5 VSUPPLY = 9V 2.5 2.0 2 3456789 SUPPLY VOLTAGE (V) 10 2.0 -40 -20 0 20 40 60 80 100 TEMPERATURE (C) 1.0 -40 -20 0 20 40 60 80 100 TEMPERATURE (C) Bias Current vs. Temperature 5 Offset Voltage vs. Common-Mode Voltage 6 OFFSET VOLTGE (mV) OFFSET VOLTGE (mV) 5 4 +85C 3 -40C 2 1 +25C 0 -8 -6 -4 -2 0 2 4 6 8 COMMON-MODE VOLTAGE (V) VSUPPLY = 9V 4 3 2 1 5 Offset Voltage vs. Common-Mode Voltage VSUPPLY = 5V BIAS CURRENT (A) 4 VSUPPLY = 5V +85C 3 -40C +25C 2 VSUPPLY = 9V 1 -40 -20 0 20 40 60 80 100 TEMPERATURE (C) 0 -5 -4 -3 -2 -1 0 1 2 3 4 5 COMMON-MODE VOLTAGE (V) Short-Circuit Current vs. Temperature 95 SUPPLY CURRENT (mA) SUPPLY CURRENT (mA) 90 85 80 75 70 65 60 55 -40 -20 0 20 40 60 80 100 TEMPERATURE (C) VSUPPLY = 5V SOURCING CURRENT VSUPPLY = 9V -20 Short-Circuit Current vs. Temperature 100 VSUPPLY = 5V Short-Circuit Current vs. Supply Voltage OUTPUT CURRENT (mA) -25 80 -40C +25C -30 SINKING CURRENT -35 VSUPPLY = 9V -40 -40 -20 0 20 40 60 80 100 TEMPERATURE (C) 60 +85C 40 SOURCING CURRENT 20 2 3456789 SUPPLY VOLTAGE (V) 10 Short-Circuit Current vs. Supply Voltage -15 OUTPUT CURRENT (mA) OUTPUT VOLTAGE (V) -20 -25 -30 -35 SINKING CURRENT -40 2 +25C 10 -40C +85C 10 9 8 7 6 5 4 3 2 1 0 0 Output Voltage vs. Output Current OUTPUT VOLTAGE (V) VSUPPLY = 9V 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 -40 Output Voltage vs. Output Current SINKING CURRENT -40C +25C +85C +25C -40C SOURCING CURRENT +85C VSUPPLY = 9V -30 -20 -10 OUTPUT CURRENT (mA) 0 3456789 SUPPLY VOLTAGE (V) 20 40 60 80 100 OUTPUT CURRENT (mA) MIC910 4 June 2000 MIC910 Micrel Output Voltage vs. Output Current 4.5 4.0 OUTPUT VOLTAGE (V) 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 0 SOURCING CURRENT 20 40 60 80 OUTPUT CURRENT (mA) +85C -40C +25C OUTPUT VOLTAGE (V) 0.0 Output Voltage vs. Output Current GAIN BANDWIDTH (MHz) -0.5 -1.0 -1.5 -2.0 -2.5 -3.0 -3.5 -4.0 -4.5 -30 VSUPPLY = 5V +85C 0 +25C -40C SINKING CURRENT Gain Bandwidth and Phase Margin vs. Load 150 125 100 75 50 25 0 0 VSUPPLY = 5V 46 44 42 40 38 36 34 200 400 600 800 1000 CAPACITIVE LOAD (pF) VSUPPLY = 5V -25 -20 -15 -10 -5 OUTPUT CURRENT (mA) Gain Bandwidth and Phase Margin vs. Load 150 46 Gain Bandwidth and Phase Margin vs. Supply Voltage 150 54 52 Common-Mode Rejection Ratio 120 100 GAIN BANDWIDTH (MHz) 125 100 VSUPPLY = 9V 75 50 25 0 0 GAIN BANDWIDTH (MHz) 44 125 100 75 50 25 0 2 3456789 SUPPLY VOLTAGE (V) PHASE MARGIN () 40 38 36 34 200 400 600 800 1000 CAPACITIVE LOAD (pF) 48 46 44 42 10 CMRR (dB) 42 50 PHASE MARGIN () 80 60 40 20 VSUPPLY = 9V 1x102 1x103 1x104 1x105 1x106 FREQUENCY (Hz) Common-Mode Rejection Ratio 120 100 Positive Power Supply Rejection Ratio 100 80 +PSRR (dB) -PSRR (dB) Negative Power Supply Rejection Ratio 100 80 60 40 VSUPPLY = 9V 20 0 CMRR (dB) 80 60 40 20 VSUPPLY = 5V 60 40 VSUPPLY = 9V 20 1x102 1x103 1x104 1x105 1x106 1x107 1x102 1x103 1x104 1x105 1x106 1x102 1x103 1x104 1x105 1x106 FREQUENCY (Hz) 1x107 0 FREQUENCY (Hz) FREQUENCY (Hz) Positive Power Supply Rejection Ratio 100 80 Negative Power Supply Rejection Ratio 100 80 -PSRR (dB) +PSRR (dB) 60 40 VSUPPLY = 5V 20 0 60 40 VSUPPLY = 5V 20 1x102 1x103 1x104 1x105 1x106 1x107 1x102 1x103 1x104 1x105 1x106 FREQUENCY (Hz) FREQUENCY (Hz) June 2000 5 1x107 0 1x107 0 1x107 0 MIC910 PHASE MARGIN () MIC910 Micrel Closed-Loop Frequency Response Test Circuit VCC 10F Closed-Loop Frequency Response 50 40 30 20 GAIN (dB) 10 0 -10 -20 -30 -40 -50 1 VCC = 2.5V 10 100 200 FREQUENCY (MHz) 1000pF 500pF 200pF 100pF 50pF 50 40 30 20 GAIN (dB) Open-Loop Frequency Response RL=100 225 180 135 90 No Load 45 0 -45 -90 VCC = 5V -135 -180 PHASE () PHASE () 0p 0.1F 10 0 -10 -20 -30 -40 -50 1 FET probe MIC910 RF 50 10F VEE CL -225 10 100 200 FREQUENCY (MHz) Closed-Loop Frequency Response 50 40 30 20 GAIN (dB) 10 0 -10 -20 -30 -40 -50 1 VCC = 5V 10 100 200 FREQUENCY (MHz) 1000pF 500pF 200pF 100pF 50pF 50 40 30 20 GAIN (dB) Open-Loop Frequency Response RL=100 225 180 135 90 No Load 45 0 -45 -90 VCC = 9V -135 -180 0p 10 0 -10 -20 -30 -40 -50 1 -225 10 100 200 FREQUENCY (MHz) Voltage Noise 120 Positive Slew Rate 250 200 150 100 50 0 0 VCC = 5V 250 200 150 100 50 0 0 Negative Slew Rate VCC = 5V nV Hz 100 SLEW RATE (V/s) 80 60 40 20 NOISE VOLTAGE 1x101 1x102 1x103 1x104 1x105 0 200 400 600 800 1000 LOAD CAPACITANCE (pF) SLEW RATE (V/s) 200 400 600 800 1000 LOAD CAPACITANCE (pF) FREQUENCY (Hz) Current Noise 5 Positive Slew Rate 300 250 SLEW RATE (V/s) 200 150 100 50 VCC = 9V 300 250 SLEW RATE (V/s) 200 150 100 50 200 400 600 800 1000 LOAD CAPACITANCE (pF) 0 0 Negative Slew Rate VCC = 9V NOISE CURRENT pA Hz 4 3 2 1 0 1x101 1x102 1x103 1x104 1x105 0 0 200 400 600 800 1000 LOAD CAPACITANCE (pF) FREQUENCY (Hz) MIC910 6 June 2000 MIC910 Micrel Small-Signal Pulse Response Small-Signal Pulse Response INPUT VCC = 9V AV = 1 CL = 1.7pF RL = 10M INPUT VCC = 5V AV = 1 CL = 1.7pF RL = 10M OUTPUT Small-Signal Pulse Response OUTPUT Small-Signal Pulse Response INPUT VCC = 9V AV = 1 CL = 100pF RL = 10M INPUT VCC = 5V AV = 1 CL = 100pF RL = 10M OUTPUT Small-Signal Pulse Response OUTPUT Small-Signal Pulse Response INPUT VCC = 9V AV = 1 CL = 1000pF RL = 10M INPUT VCC = 5V AV = 1 CL = 1000pF RL = 10M OUTPUT June 2000 7 OUTPUT MIC910 MIC910 Micrel Large-Signal Pulse Response VCC = 9V AV = 1 CL = 1.7pF OUTPUT Large-Signal Pulse Response VCC = 5V AV = 1 CL = 1.7pF OUTPUT V = 5.64V t = 21ns V = 5.68V t = 24.5ns Large-Signal Pulse Response Large-Signal Pulse Response VCC = 5V AV = 1 CL = 100pF OUTPUT V = 5.84V t = 22.5ns OUTPUT VCC = 9V AV = 1 CL = 100pF V = 5.84V t = 26ns Large-Signal Pulse Response Large-Signal Pulse Response VCC = 5V AV = 1 CL = 1000pF OUTPUT V = 5.88V t = 70ns OUTPUT VCC = 9V AV = 1 CL = 1000pF V = 5.48V t = 95ns MIC910 8 June 2000 MIC910 Micrel 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 resistance). Surface-mount ceramic capacitors are ideal. Thermal Considerations The SOT-23-5 package, like all small packages, has 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 particular CMRR will reduce. A MIC910 with no load, dissipates power equal to the quiescent 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 Applications Information The MIC910 is a high-speed, voltage-feedback operational amplifier featuring very low supply current and excellent stability. This device is unity gain stable and capable of driving high capacitance loads. Driving High Capacitance The MIC910 is stable when driving any capacitance (see "Typical Characteristics: Gain Bandwidth and Phase Margin vs. Load Capacitance") making it ideal for driving long coaxial cables or other high-capacitance loads. Phase margin remains constant as load capacitance is increased. Most high-speed op amps are only able to drive limited capacitance. Note: increasing load capacitance does reduce the speed of the device (see "Typical Characteristics: Gain Bandwidth and Phase Margin vs. Load"). 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 MIC910 is NOT a current feedback device. Resistor values in the range of 1k to 10k are recommended. Layout Considerations All high speed devices require careful PCB layout. The high stability and high PSRR of the MIC910 make this op amp easier to use than most, but 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. ( ) ( ) 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 SOT23-5 package has a thermal resistance of 260C/W. Max . Allowable Power Dissipation = TJ (max) - TA(max) 260W June 2000 9 MIC910 MIC910 Micrel MIC910 10 June 2000 MIC910 Micrel Package Information 1.90 (0.075) REF 0.95 (0.037) REF 1.75 (0.069) 1.50 (0.059) 3.00 (0.118) 2.60 (0.102) DIMENSIONS: MM (INCH) 3.02 (0.119) 2.80 (0.110) 1.30 (0.051) 0.90 (0.035) 10 0 0.15 (0.006) 0.00 (0.000) 0.20 (0.008) 0.09 (0.004) 0.50 (0.020) 0.35 (0.014) 0.60 (0.024) 0.10 (0.004) SOT-23-5 (M5) June 2000 11 MIC910 MIC910 Micrel MICREL INC. 1849 FORTUNE DRIVE SAN JOSE, CA 95131 TEL USA + 1 (408) 944-0800 FAX + 1 (408) 944-0970 WEB http://www.micrel.com This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel Inc. (c) 2000 Micrel Incorporated MIC910 12 June 2000 |
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