MIC913 350MHz Low-Power SOT23-5 Op Amp General Description Features The MIC913 is a high-speed, operational amplifier. It provides a gain-bandwidth product of 350MHz with a very low, 4.2mA supply current, and features the tiny SOT-23-5 package. Supply voltage range is from ±2.5V to ±9V, allowing the MIC913 to be used in low-voltage circuits or applications requiring large dynamic range. The MIC913 requires a minimum gain of +2 or –1 but is stable driving any capacitive 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 MIC913 ideal for portable equipment. The ability to drive capacitive loads also makes it possible to drive long coaxial cables. Data sheets and support documentation can be found on Micrel’s web site at: www.micrel.com. • • • • • • • 350MHz gain bandwidth product 4.2mA supply current SOT23-5 package 500V/µs slew rate Drives any capacitive load Stable with gain of +2 or –1 Low distortion Applications • • • • • • Video Imaging Ultrasound Portable equipment Line drivers XDSL ___________________________________________________________________________________________________________ Ordering Information Part Number Temperature Range Package Lead Finish MIC913BM5 –40° to +85°C 5-Pin SOT23 Standard MIC913YM5 –40° to +85°C 5-Pin SOT23 Pb-Free Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com October 2007 M9999-101707 Micrel, Inc. MIC913 Pin Configuration Functional Pinout IN+ 3 V+ OUT 2 1 IN+ 3 Part Identification V+ OUT 2 1 A24 4 5 4 5 IN– V– IN– V– SOT23-5 SOT23-5 Pin Description Pin Number Pin Name 1 OUT 2 V+ Positive Supply (Input) 3 IN+ Non-inverting Input 4 IN– Inverting Input 5 V– Negative Supply (Input) October 2007 Pin Function Output: Amplifier Output 2 M9999-101707 Micrel, Inc. MIC913 Absolute Maximum Ratings(1) Operating Ratings(2) Supply Voltage (VV+ – VV–) .............................................20V Differential Input Voltage (|VIN+ – VIN–|)(3) .........................4V Input Common-Mode Range (VIN+ – VIN–) .............VV+ to VV– Lead Temperature (soldering, 5 sec.)........................ 260°C Storage Temperature (Ts) .......................................... 150°C ESD Rating(4) ............................................................... 1.5kV Supply Voltage (VS)......................................... ±2.5V to ±9V Junction Temperature (TJ) .......................... –40°C to +85°C 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 VOS IB IOS Parameter Condition Min Typ Max Input Offset Voltage 1 16 Input Offset Voltage Temperature Coefficient 4 Input Bias Current 5.5 Input Offset Current 0.05 –3.25 Units mV µV/°C 9 µA 15 µA 3 µA VCM Input Common-Mode Range CMRR > 60dB CMRR Common-Mode Rejection Ratio –2.0V < VCM < +2.0V 70 85 +3.25 dB PSRR Power Supply Rejection Ratio ±5V < VS < ±9V 70 81 dB AVOL Large-Signal Voltage Gain RL = 2k, VOUT = ±2V 60 71 dB RL = 200Ω, VOUT = ±2V 60 71 dB +3.3 3.5 dB 65 VOUT Maximum Output Voltage Swing positive, RL = 2kΩ V V +3.0 negative, RL = 2kΩ –3.5 positive, RL = 200Ω +3.0 –3.3 V –3.0 V 3.2 V V +2.75 negative, RL = 200Ω V –2.8 –2.45 V –2.2 V GBW Gain-Bandwidth Product f = 80MHz, RL = 1kΩ BW –3dB Bandwidth AV = 2, RL = 150Ω 213 MHz AV = 4, or AV = –3, RL = 400Ω 104 MHz RF = RG = 470Ω, AV = 2, VOUT = 2Vpp, f = 2MHz 0.01 % AV = 2, VOUT = 2Vpp, f = 2MHz, RL = 500Ω 0.05 % 350 V/µs 72 mA THD Total Harmonic Distortion SR Slew Rate IGND Short-Circuit Output Current source sink MHz 25 Supply Current October 2007 300 4.1 3 mA 4.9 mA 5.4 mA M9999-101707 Micrel, Inc. MIC913 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 Condition Min Typ Max Units Input Offset Voltage 1 16 mV Input Offset Voltage Temperature Coefficient 4 µV/°C IB Input Bias Current 5.5 IOS Input Offset Current 0.05 VCM Input Common-Mode Range CMRR Common-Mode Rejection Ratio –6.0V < VCM < 6.0V 70 88 dB AVOL Large-Signal Voltage Gain RL = 2kΩ, VOUT = ±6V 60 73 dB VOUT Maximum Output Voltage Swing positive, RL = 2kΩ +7.2 +7.4 V CMRR > 60dB –7.25 9 15 µA 3 µA +7.25 V V +6.8 negative, RL = 2kΩ µA –7.4 –7.2 V –6.8 V GBW Gain-Bandwidth Product RL = 1kΩ, f = 80MHz 350 MHz BW –3dB Bandwidth AV = 2 or AV = –1, RL = 150Ω 240 MHz AV = 4 or AV = –3 140 MHz RF = RG = 470Ω, AV = 2, VOUT = 2Vpp, f = 2MHz 0.01 % AV = 2, VOUT = 2Vpp, f = 2MHz, RL = 500Ω 0.04 % 500 V/µs source 90 mA sink 32 mA THD Total Harmonic Distortion SR Slew Rate IGND Short-Circuit Output Current Supply Current 4.2 5.0 mA 5.5 mA Notes: 1. Exceeding the absolute maximum rating may damage the device. 2. The device is not guaranteed to function outside its operating rating. 3. Exceeding the maximum differential input voltage will damage the input stage and degrade performance (in particular, input bias current is likely to change). 4. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF. October 2007 4 M9999-101707 Micrel, Inc. MIC913 Test Circuits VCC 10µF VCC 0.1µF Input R2 BNC 5k 10µF 0.1µF 10k 10k 10k 2k 4 MIC913 BNC 1 BNC Input 2 R1 5k Output 4 R7c 2k 2 0.1µF MIC913 3 1 BNC Output 3 5 5 0.1µF R6 Input 0.1F BNC 5k R3 200k 0.1µF All resistors: 1% metal film All resistors 1% R5 5k 10µF VEE R4 10µF ⎛ R2 R2 + R 5 + R4 ⎞ VOUT = VERROR ⎜ 1+ + ⎟ ⎝ R1 ⎠ R7 PSRR vs. Frequency CMRR vs. Frequency VEE 100pF 10pF R1 R3 27k S1 S2 R5 R4 27k VCC R2 4k 4 10µF 2 0.1µF MIC913 1 3 5 10pF 0.1µF BNC To Dynamic Analyzer 10µF VEE Noise Measurement October 2007 5 M9999-101707 Micrel, Inc. MIC913 Typical Characteristics October 2007 6 M9999-101707 Micrel, Inc. MIC913 Typical Characteristics (continued) October 2007 7 M9999-101707 Micrel, Inc. MIC913 Typical Characteristics (continued) October 2007 8 M9999-101707 Micrel, Inc. MIC913 Typical Characteristics (continued) October 2007 9 M9999-101707 Micrel, Inc. MIC913 Functional Characteristics October 2007 10 M9999-101707 Micrel, Inc. MIC913 Functional Characteristics (continued) October 2007 11 M9999-101707 Micrel, Inc. MIC913 It is important to ensure adequate supply bypassing capacitors are located close to the device. Application Information The MIC913 is a high-speed, voltage-feedback operational amplifier featuring very low supply current. The MIC913 is not unity-gain stable, it requires a minimum gain of +2 or –1 to ensure stability. The device is however stable even when driving high capacitance loads. 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. Driving High Capacitance The MIC913 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. 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 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 MIC913 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+ – VV–)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 SOT23-5 package has a thermal resistance of 260°C/W. Feedback Resistor Selection Conventional op amp gain configurations and resistor selection apply, the MIC913 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 MIC913 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. October 2007 Max. Allowable Power Dissipation = 12 TJ(max) − TA(max) 260W M9999-101707 Micrel, Inc. MIC913 Package Information 5-Pin SOT23 (M5) 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 The 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. October 2007 13 M9999-101707