MIC921 Micrel, Inc. MIC921 45MHz Low-Power SC-70 Op Amp General Description Features The MIC921 is a high-speed operational amplier with a 45MHz gain bandwidth product gain-bandwidth product of 45MHz. The part is unity gain 61MHz 3dB bandwidth stable. It has a very low 300A supply current, and features 300A supply current the IttyBitty SC-70 and SOT-23-5 package. SC-70 or SOT-23-5 packages 3200V/s slew rate Supply voltage range is from 2.5V to 9V, allowing the Drives any capacitive load MIC921 to be used in low-voltage circuits or applications 112dB CMRR requiring large dynamic range. Unity gain stable The MIC921 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 Applications supply voltage, low power consumption, and small packing Video make the MIC921 ideal for portable equipment. The ability Imaging to drive capacitative loads also makes it possible to drive Ultrasound long coaxial cables. Portable equipment Line drivers Ordering Information Part Number Ambient Temperature Package Standard Marking Pb-Free Marking MIC921BM5 A38 40C to +85C SOT-23-5* MIC921BC5 A38 MIC921YC5 A38 40C to +85C SC-70-5 * Contact factory for availability of SOT-23-5 package. Note: Underbar marking may not be to scale. Pin Conguration Functional Pinout IN V IN+ IN V IN+ 3 2 1 Part 3 2 1 Identification A38 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 Pin Function 1 IN+ Noninverting Input 2 V Negative Supply (Input) 3 IN Inverting Input 4 OUT Output: Amplier Output 5 V+ Positive Supply (Input) IttyBitty is a trademark or Micrel, Inc. Micrel, Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel + 1 (408) 944-0800 fax + 1 (408) 474-1000 MIC921 Micrel, Inc. Absolute Maximum Ratings (Note 1) Operating Ratings (Note 2) Supply Voltage (V V ) ........................................... 20V Supply Voltage (V ) .........................................2.5V to 9V V+ V S Differentail Input Voltage ( V V ) ........... 4V, Note 3 Junction Temperature (T ) .......................... 40C to +85C IN+ IN J Input Common-Mode Range (V , V ) ............V to V Package Thermal Resistance IN+ IN V+ V SC70-5 ..............................................................450C/W Lead Temperature (soldering, 5 sec.) ........................ 260C SOT23-5 ............................................................260C/W Storage Temperature (T ) ......................................... 150C S ESD Rating, Note 4 ................................................... 1.5kV Electrical Characteristics (5V) V+ = +5V, V = 5V, V = 0V, R = 10M T = 25C, bold values indicate 40C T +85C unless noted. CM L J J Symbol Parameter Condition Min Typ Max Units V Input Offset Voltage 0.43 5 mV OS V V Temperature Coefcient 1 V/C OS OS I Input Bias Current 0.13 0.6 A B I Input Offset Current 0.06 0.3 A OS V Input Common-Mode Range CMRR > 72dB 3.25 +3.25 V CM CMRR Common-Mode Rejection Ratio 2.5V < V < +2.5V 75 87 dB CM PSRR Power Supply Rejection Ratio 3.5V < V < 9V 95 105 dB S A Large-Signal Voltage Gain R = 2k, V = 2V 70 84 dB VOL L OUT R = 100, V = 1V 85 dB L OUT V Maximum Output Voltage Swing positive, R = 2k +3.0 3.7 V OUT L negative, R = 2k 3.7 3.0 V L positive, R = 200 +1.5 3.0 V L negative, R = 200, Note 5 2.5 1.0 V L GBW Unity Gain-Bandwidth Product A = 1, C = 1.7pF 37 MHz V L PM Phase Margin 46 BW 3dB Bandwidth A = 1, R = 1k, C = 1.7pF 53 MHz V L L SR Slew Rate C=1.7pF, Gain=1, V =5V, peak to peak, 1500 V/s OUT negative SR = 1300V/s I Short-Circuit Output Current source 45 57 mA SC sink 20 40 mA I Supply Current No Load 0.30 0.50 mA S Input Voltage Noise f = 10kHz 12 nV Hz Input Current Noise f = 10kHz 0.7 pA Hz Electrical Characteristics V+ = +9V, V = 9V, V = 0V, R = 10M T = 25C, bold values indicate 40C T +85C unless noted CM L J J Symbol Parameter Condition Min Typ Max Units V Input Offset Voltage 0.4 5 mV OS V Input Offset Voltage 1 V/C OS Temperature Coefcient I Input Bias Current 0.13 0.6 A B I Input Offset Current 0.06 0.3 A OS V Input Common-Mode Range CMRR > 75dB 7.25 +7.25 V CM CMRR Common-Mode Rejection Ratio 2.5V < V < +2.5V 75 87 dB CM MIC921 2 April 2006