MIC916 Micrel, Inc. MIC916 Triple 135MHz Low-Power Op Amp General Description Features The MIC916 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 per op amp. Supply voltage range is from ±2.5V to ±9V, allowing the MIC916 to be used in low-voltage circuits or applications requiring large dynamic range. The MIC916 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 MIC916 ideal for portable equipment. The ability to drive capacitative loads also makes it possible to drive long coaxial cables. • • • • • 135MHz gain bandwidth product 2.4mA supply current per op amp QSOP-16 package 270V/µs slew rate drives any capacitive load Applications • • • • Video Imaging Ultrasound Portable equipment Ordering Information Part Number Standard Pb-Free MIC916BQS MIC916YQS Junction Temp. Range Package –40°C to +85°C QSOP-16 Pin Configuration INA- 1 16 V–(A)* V+(A) 2 15 OUTA INA+ 3 14 V–(B)* INB- 4 13 OUTB INB+ 5 12 V+(B) INC- 6 11 V–(C)* NC 7 10 OUTC INC+ 8 9 V+(C) QSOP-16 * V– pins must be externally shorted together Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com April 2005 1 M9999-042205 MIC916 Micrel, Inc. Pin Description Pin Number Pin Name 1 INA– Inverting Input A 2 V+(A) Positive Supply Input (Op Amp A) 3 INA+ Noninverting Input A 4 INB– Inverting Input B 5 INB+ Noninverting Input B 6 INC– Inverting Input C 7 NC 8 INC+ Noninverting Input C 9 V+(C) Positive Supply Input (Op Amp C) 10 OUTC Output C 11 V–(C) Negative Supply Input (Op Amp C) 12 V+(B) Positive Supply Input(Op Amp B) 13 OUTB Output B 14 V–(B) Negative Supply Input (Op Amp B) 15 OUTA Output A 16 V–(A) Negative Supply Input (Op Amp A) M9999-042205 Pin Function Not Connected 2 April 2005 MIC916 Micrel, Inc. Absolute Maximum Ratings (Note 1) Operating Ratings (Note 2) 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.) ....................... 260°C Storage Temperature (TS) ........................................ 150°C ESD Rating, Note 3 ................................................... 1.5kV Supply Voltage (VS) ....................................... ±2.5V to ±9V Junction Temperature (TJ) ......................... –40°C to +85°C Package Thermal Resistance ............................... 260°C/W Electrical Characteristics (±5V) VV+ = +5V, VV– = –5V, VCM = 0V, VOUT = 0V; RL = 10MΩ; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +85°C; unless noted. Symbol Parameter VOS Typ Max Units Input Offset Voltage 1 15 mV VOS Input Offset Voltage Temperature Coefficient 4 IB Input Bias Current 3.5 5.5 9 µA µA IOS Input Offset Current 0.05 3 µA VCM Input Common-Mode Range CMRR > 60dB +3.25 V CMRR Common-Mode Rejection Ratio –2.5V < VCM < +2.5V 70 60 90 dB dB PSRR Power Supply Rejection Ratio ±5V < VS < ±9V 74 70 81 dB dB AVOL Large-Signal Voltage Gain RL = 2k, VOUT = ±2V 60 71 dB RL = 200Ω, VOUT = ±2V 60 71 dB +3.3 +3.0 3.5 V V VOUT Maximum Output Voltage Swing Condition Min positive, RL = 2kΩ –3.25 negative, RL = 2kΩ positive, RL = 200Ω –3.5 +3.0 +2.75 µV/°C –3.3 –3.0 3.2 negative, RL = 200Ω –2.8 V V V V –2.45 –2.2 V V GBW Gain-Bandwidth Product RL = 1kΩ 125 MHz BW –3dB Bandwidth AV = 1, RL = 100Ω 192 MHz SR Slew Rate 230 V/µs f = 1MHz, between op amp A and B or B and C 56 dB f = 1 MHz, between op amp A and C 72 dB source 72 mA sink 25 mA Crosstalk IGND IGND Short-Circuit Output Current Supply Current per Op Amp 2.4 3.5 4.1 mA mA Electrical Characteristics VV+ = +9V, VV– = –9V, VCM = 0V, VOUT = 0V; RL = 10MΩ; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +85°C; unless noted Symbol Parameter VOS VOS April 2005 Condition Min Typ Max Units Input Offset Voltage 1 15 mV Input Offset Voltage Temperature Coefficient 4 3 µV/°C M9999-042205 MIC916 Micrel, Inc. Symbol Parameter IB Condition Typ Max Units Input Bias Current 3.5 5.5 9 µA µA IOS Input Offset Current 0.05 3 µA VCM Input Common-Mode Range CMRR > 60dB +7.25 V CMRR Common-Mode Rejection Ratio –6.5V < VCM < 6.5V 70 60 98 dB dB AVOL Large-Signal Voltage Gain RL = 2kΩ, VOUT = ±6V 60 73 dB VOUT Maximum Output Voltage Swing positive, RL = 2kΩ +7.2 +6.8 +7.4 V V GBW Gain-Bandwidth Product SR Slew Rate Crosstalk IGND Short-Circuit Output Current IGND Min –7.25 negative, RL = 2kΩ –7.4 RL = 1kΩ 135 MHz 270 V/µs f = 1MHz, between op amp A and B or B and C 56 dB f = 1 MHz, between op amp A and C 72 dB source 90 mA sink 32 mA Supply Current per Op Amp 2.5 –7.2 –6.8 V V 3.7 4.3 mA 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. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF. Note 4. Exceeding the maximum differential input voltage will damage the input stage and degrade performance (in particular, input bias current is likely to increase. Test Circuits VCC R2 VCC 5k 10µF 10µF BNC 50Ω Input 0.1µF BNC R1 5k Input 0.1µF BNC R3 200k Output All resistors 1% 50Ω BNC 0.1µF All resistors: 1% metal film R5 5k 10µF VEE R4 250Ω R2 R2 + R 5 + R4 VOUT = VERROR 1 + + R1 R7 Input 50Ω 0.1µF 5k BNC 10k Output R6 2k 10k 10k 0.1µF R7c 2k R7b 200Ω R7a 100Ω 0.1µF CMRR vs. Frequency 10µF VEE PSRR vs. Frequency M9999-042205 4 April 2005 MIC916 Micrel, Inc. 100pF 10pF R1 20Ω VCC R2 4k 10µF R3 27k 0.1µF BNC S1 S2 R5 20Ω To Dynamic Analyzer 0.1µF R4 27k 10pF 10µF VEE Noise Measurement April 2005 5 M9999-042205 MIC916 Micrel, Inc. Electrical Characteristics 2.5 2.0 2 -40°C 3 4 5 6 7 8 9 SUPPLY VOLTAGE (±V) 10 3.5 VSUPPLY = ±9V 3.0 VSUPPLY = ±5V 2.5 Offset Voltage vs. Common-Mode Voltage OFFSET VOLTGE (mV) BIAS CURRENT (µA) 2 VSUPPLY = ±9V VSUPPLY = ±9V 1.5 Offset Voltage vs. Common-Mode Voltage 6 3 2.0 1.0 -40 -20 0 20 40 60 80 100 TEMPERATURE (°C) 5 VSUPPLY = ±5V VSUPPLY = ±5V 2.0 -40 -20 0 20 40 60 80 100 TEMPERATURE (°C) Bias Current vs. Temperature 4 OFFSET VOLTAGE (mV) +25°C 2.5 5 VSUPPLY = ±9V 5 VSUPPLY = ±5V OFFSET VOLTGE (mV) +85°C 3.0 Offset Voltage vs. Temperature 4.0 SUPPLY CURRENT (mA) SUPPLY CURRENT (mA) 3.5 Supply Current vs. Temperature Supply Current vs. Supply Voltage 4 +85°C 3 -40°C 2 1 4 3 2 1 +25°C +25°C 0 -8 -6 -4 -2 0 2 4 6 8 COMMON-MODE VOLTAGE (V) 0 -5 -4 -3 -2 -1 0 1 2 3 4 5 COMMON-MODE VOLTAGE (V) Short-Circuit Current vs. Temperature Short-Circuit Current vs. Temperature Short-Circuit Current vs. Supply Voltage 80 SOURCING CURRENT 70 65 VSUPPLY = ±5V 60 55 -40 -20 0 20 40 60 80 100 TEMPERATURE (°C) +85°C -30 -35 SINKING CURRENT M9999-042205 -35 VSUPPLY = ±9V -40 -40 -20 0 20 40 60 80 100 TEMPERATURE (°C) 10 -40°C -25 -40 2 SINKING CURRENT Short-Circuit Current vs. Supply Voltage -20 +25°C 3 4 5 6 7 8 9 SUPPLY VOLTAGE (±V) 10 VSUPPLY = ±5V -30 OUTPUT VOLTAGE (V) -15 -25 VSUPPLY = ±9V 7 6 5 4 +25°C -40°C 3 2 SOURCING CURRENT +85°C 20 40 60 80 100 OUTPUT CURRENT (mA) 6 80 -40°C +25°C 60 +85°C 40 SOURCING CURRENT 20 2 Output Voltage vs. Output Current 9 8 1 0 0 OUTPUT CURRENT (mA) 85 75 100 -20 VSUPPLY = ±9V 0 OUTPUT VOLTAGE (V) 90 SUPPLY CURRENT (mA) SUPPLY CURRENT (mA) -40°C 1 -40 -20 0 20 40 60 80 100 TEMPERATURE (°C) 95 OUTPUT CURRENT (mA) +85°C 3 4 5 6 7 8 9 SUPPLY VOLTAGE (±V) Output Voltage vs. Output Current -1 -2 -3 -4 10 -40°C SINKING CURRENT +85°C +25°C -5 -6 -7 -8 -9 VSUPPLY = ±9V -10 -40 -30 -20 -10 OUTPUT CURRENT (mA) 0 April 2005 MIC916 Micrel, Inc. 0 0 SOURCING CURRENT -4.0 -4.5 -30 20 40 60 80 OUTPUT CURRENT (mA) 46 125 44 42 VSUPPLY = ±9V 40 50 38 25 36 0 0 GAIN BANDWIDTH (MHz) 150 100 +85°C VSUPPLY = ±5V -25 -20 -15 -10 -5 OUTPUT CURRENT (mA) 40 50 38 25 36 0 0 0 34 200 400 600 800 1000 CAPACITIVE LOAD (pF) 150 54 120 125 52 100 100 50 75 48 50 46 25 44 20 42 10 0 0 2 3 4 5 6 7 8 9 SUPPLY VOLTAGE (±V) PHASE MARGIN (°) 75 Gain Bandwidth and Phase Margin vs. Supply Voltage PHASE MARGIN (°) GAIN BANDWIDTH (MHz) Gain Bandwidth and Phase Margin vs. Load 75 -3.5 VSUPPLY = ±5V 34 200 400 600 800 1000 CAPACITIVE LOAD (pF) Common-Mode Rejection Ratio 80 60 40 VSUPPLY = ±9V 1x107 0.5 -3.0 42 100 1x106 -40°C +25°C 44 1x105 +85°C 1.0 -2.5 125 1x102 1.5 -2.0 46 1x104 2.0 -1.5 150 1x103 +25°C 2.5 -40°C CMRR (dB) 3.0 -1.0 GAIN BANDWIDTH (MHz) 3.5 SINKING CURRENT -0.5 PHASE MARGIN (°) OUTPUT VOLTAGE (V) 0.0 VSUPPLY = ±5V 4.0 OUTPUT VOLTAGE (V) 4.5 Gain Bandwidth and Phase Margin vs. Load Output Voltage vs. Output Current Output Voltage vs. Output Current FREQUENCY (Hz) VSUPPLY = ±9V VSUPPLY = ±9V 1x107 1x106 1x102 1x107 1x106 FREQUENCY (Hz) 1x105 1x102 0 1x104 0 1x107 1x106 1x105 1x104 40 20 20 1x103 1x102 40 60 1x105 VSUPPLY = ±5V 20 60 1x104 40 –PSRR (dB) 60 0 80 80 80 +PSRR (dB) CMRR (dB) 100 100 Negative Power Supply Rejection Ratio 1x103 100 Positive Power Supply Rejection Ratio 1x103 120 Common-Mode Rejection Ratio FREQUENCY (Hz) FREQUENCY (Hz) VSUPPLY = ±5V -60 -70 -80 7 1x107 1x106 1x105 FREQUENCY (Hz) 1x108 -90 1x104 0 -50 -100 1x103 FREQUENCY (Hz) 1x107 1x106 1x105 1x104 1x103 20 -40 1x107 20 40 -30 1x106 VSUPPLY = ±5V 60 -20 1x105 40 1x102 CROSS TALK (dB) –PSRR (dB) +PSRR (dB) -10 80 60 April 2005 0 100 80 0 Distant Channel Cross Talk Negative Power Supply Rejection Ratio 1x102 100 Positive Power Supply Rejection Ratio FREQUENCY (Hz) M9999-042205 MIC916 Micrel, Inc. Adjacent Channel Cross Talk VCC 0 50 FET probe MIC916 CL RF 40 30 -20 -30 GAIN (dB) 0.1µF CROSS TALK (dB) -10 -40 -50 -60 0 -10 -40 -50 1 1x108 1x107 VEE 1x106 1x105 -90 10µF 20 10 -20 -30 -70 -80 50Ω 1000pF 500pF 200pF 100pF 50pF 10µF Closed-Loop Frequency Response 0p Closed-Loop Frequency Response Test Circuit VCC = ±2.5V 10 100 200 FREQUENCY (MHz) FREQUENCY (Hz) -180 -225 10 100 200 FREQUENCY (MHz) 250 SLEW RATE (V/µs) 100 60 40 No Load 0 -45 VCC = ±5V -40 -50 1 10 100 200 FREQUENCY (MHz) Positive Slew Rate VCC = ±5V 150 100 50 250 200 -90 -135 VCC = ±9V -180 -225 10 100 200 FREQUENCY (MHz) Negative Slew Rate VCC = ±5V 150 100 50 0 0 200 400 600 800 1000 LOAD CAPACITANCE (pF) PHASE (°) GAIN (dB) 90 45 20 10 0 -10 225 180 135 RL=100Ω -20 -30 200 0 0 1x105 1x104 1x101 0 1x103 20 Open-Loop Frequency Response 40 30 0 -10 -40 -50 1 Voltage Noise 80 50 -20 -30 VCC = ±5V 1x102 nV Hz 20 10 -90 -135 120 NOISE VOLTAGE 90 45 0 -45 No Load -20 -30 -40 -50 1 40 30 SLEW RATE (V/µs) 0 -10 50 180 135 0p 20 10 225 Closed-Loop Frequency Response 1000pF 500pF 200pF 100pF 50pF RL=100Ω GAIN (dB) GAIN (dB) 40 30 PHASE (°) 50 Open-Loop Frequency Response 200 400 600 800 1000 LOAD CAPACITANCE (pF) FREQUENCY (Hz) SLEW RATE (V/µs) 3 2 1 VCC = ±9V 200 150 100 1x105 1x104 50 1x103 1x101 0 Positive Slew Rate 250 4 1x102 NOISE CURRENT pA Hz 300 0 0 300 250 SLEW RATE (V/µs) Current Noise 5 Negative Slew Rate VCC = ±9V 200 150 100 50 200 400 600 800 1000 LOAD CAPACITANCE (pF) 0 0 200 400 600 800 1000 LOAD CAPACITANCE (pF) FREQUENCY (Hz) M9999-042205 8 April 2005 MIC916 Micrel, Inc. INPUT Small-Signal Pulse Response VCC = ±9V AV = 1 CL = 1.7pF RL = 10MΩ INPUT Small-Signal Pulse Response Small-Signal Pulse Response INPUT Small-Signal Pulse Response VCC = ±5V AV = 1 CL = 1000pF RL = 10MΩ OUTPUT VCC = ±9V AV = 1 CL = 1000pF RL = 10MΩ OUTPUT INPUT VCC = ±5V AV = 1 CL = 100pF RL = 10MΩ OUTPUT VCC = ±9V AV = 1 CL = 100pF RL = 10MΩ OUTPUT INPUT Small-Signal Pulse Response April 2005 VCC = ±5V AV = 1 CL = 1.7pF RL = 10MΩ OUTPUT OUTPUT INPUT Small-Signal Pulse Response 9 M9999-042205 MIC916 Micrel, Inc. Large-Signal Pulse Response Large-Signal Pulse Response VCC = ±5V AV = 1 CL = 1.7pF OUTPUT OUTPUT VCC = ±9V AV = 1 CL = 1.7pF ∆V = 5.64V ∆t = 21ns Large-Signal Pulse Response VCC = ±5V AV = 1 CL = 100pF ∆V = 5.84V ∆t = 22.5ns OUTPUT OUTPUT Large-Signal Pulse Response ∆V = 5.68V ∆t = 24.5ns VCC = ±9V AV = 1 CL = 100pF Large-Signal Pulse Response ∆V = 5.84V ∆t = 26ns Large-Signal Pulse Response ∆V = 5.88V ∆t = 70ns OUTPUT OUTPUT VCC = ±5V AV = 1 CL = 1000pF VCC = ±9V AV = 1 CL = 1000pF M9999-042205 10 ∆V = 5.48V ∆t = 95ns April 2005 MIC916 Micrel, Inc. 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 resistance). Surface-mount ceramic capacitors are ideal. All V– pins must be externally shorted together. Thermal Considerations 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. A MIC916 with no load, dissipates power equal to the quiescent supply current * supply voltage Applications Information The MIC916 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 MIC916 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 (<100Ω) in series with the output. Feedback Resistor Selection Conventional op amp gain configurations and resistor selection apply, the MIC916 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 MIC916 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. April 2005 ( ) 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 QSOP-16 package has a thermal resistance of 260°C/W. Max . Allowable Power Dissipation = 11 TJ (max) − TA(max) TBD W M9999-042205 MIC916 Micrel, Inc. Package Information PIN 1 DIMENSIONS: INCHES (MM) 0.157 (3.99) 0.150 (3.81) 0.009 (0.2286) REF 0.025 (0.635) BSC 0.0098 (0.249) 0.0040 (0.102) 0.012 (0.30) 0.008 (0.20) 0.0098 (0.249) 0.0075 (0.190) 0.196 (4.98) 0.189 (4.80) SEATING 0.0688 (1.748) PLANE 0.0532 (1.351) 45° 8° 0° 0.050 (1.27) 0.016 (0.40) 0.2284 (5.801) 0.2240 (5.690) QSOP-16 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. © 2000 Micrel Incorporated M9999-042205 12 April 2005