MIC861 Teeny™ Ultra-Low-Power Op Amp General Description Features The MIC861 is a rail-to-rail output, input common-mode to ground, operational amplifier in Teeny™ SC70 packaging. The MIC861 provides a 400kHz gain-bandwidth product while consuming an incredibly low 4.6μA supply current. The SC70 packaging achieves significant board space savings over devices packaged in SOT-23 or MSOP-8 packaging. The SC70 occupies approximately half the board area of a SOT-23 package. Datasheets and support documentation are available on Micrel’s website at: www.micrel.com. Teeny™ SC70 packaging 400kHz gain-bandwidth product 650kHz, –3dB bandwidth 4.6µA supply current Rail-to-rail output Ground sensing at input (common mode to GND) Drives large capacitive loads (1000pF) Unity gain stable Applications Portable equipment PDAs Pagers Cordless phones Consumer electronics Functional Pinout Teeny is a trademark of Micrel, Inc. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com September 9, 2014 Revision 3.0 Micrel, Inc. MIC861 Ordering Information (1) Part Number Marking MIC861YC5 Ambient Temperature Range Package –40° to +85°C 5-Pin SC70 A33 Note: 1. Underbar marking may not be to scale. Pin Configuration 5-Pin SC70 (C5) (Top View) Pin Description Pin Number Pin Name 1 IN+ Non-inverting input. 2 V- Negative power supply connection. Connect a 10µF and 0.1µF capacitor in parallel to this pin for power supply bypassing. 3 IN- Inverting input. 4 OUT 5 V+ September 9, 2014 Pin Function Output of operational amplifier. Positive power supply input. Connect a 10µF and 0.1µF capacitor in parallel to this pin for power supply bypassing. 2 Revision 3.0 Micrel, Inc. MIC861 Absolute Maximum Ratings(2) Operating Ratings(3) Supply Voltage (VV+ – VV-)........................................... +6.0V Differential Input Voltage |VIN+ – VIN-| .......................... +6.0V Input Voltage (VIN+ – VIN-) ...................... V+ + 0.3V, V- - 0.3V Lead Temperature (soldering, 5s) .............................. 260°C Output Short Circuit Current Duration ....................Indefinite Storage Temperature (Ts).......................................... 150°C ESD Rating.................................................................Note 4 Supply Voltage (VV+ – VV-) ....................... +2.43V to +5.25V Ambient Temperature (TA) .......................... –40°C to +85°C Junction Thermal Resistance 5-Pin SC70 (ƟJA) ............................................. 450°C/W Electrical Characteristics(5) V+ = +2.7V, V- = 0V, VCM = V+/2; RL = 500kΩ to V+/2; TA = 25°C, bold values indicate –40°C ≤ TA ≤ +85°C, unless noted. Symbol Parameter Condition Min. Typ. Max. Units Input Offset Voltage Note 6 -10 2 10 mV VOS Input Offset Voltage Temperature Coefficient 15 µV/°C IB Input Bias Current 20 pA IOS Input Offset Current 10 pA VCM Input Voltage Range CMRR >60dB 1.8 V CMRR Common Mode Rejection Ratio 0 < VCM < 1.35V 45 77 dB PSRR Power Supply Rejection Ratio Supply voltage change of 3V 50 83 dB AVOL Large Signal Voltage Gain RL = 100kΩ, VOUT = 2V peak-to-peak 60 74 dB RL = 500kΩ, VOUT = 2V peak-to-peak 73 83 dB VOUT Maximum Output Voltage Swing RL = 500kΩ V ±2mV V ±0.7mV V VOUT Minimum Output Voltage Swing RL = 500kΩ GBW Gain-Bandwidth Product RL = 200kΩ, CL = 2pF, VOUT = 0 350 kHz BW –3dB Bandwidth AV = 1, CL = 2pF, RL = 1MΩ 500 kHz SR Slew Rate AV = 1, CL = 2pF, RL = 1MΩ 0.12 V/µs ISC Short-Circuit Output Current Source 6 mA Sink 5 mA IS Supply Current V ±0.2mV No load 4.2 V V ±2mV 9 µA Notes: 2. Exceeding the absolute maximum ratings may damage the device. 3. The device is not guaranteed to function outside its operating ratings. 4. Devices are ESD sensitive. Handling precautions are recommended. Human body model, 1.5kΩ in series with 100pF. Pin 4 is ESD sensitive. 5. Specification for packaged product only. Exceeding the maximum differential input voltage will damage the input stage and degrade performance (in particular, input bias will likely increase). 6. The offset voltage distribution is centered around 0V. The typical offset number shown is equal to the standard deviation of the voltage offset distribution. September 9, 2014 3 Revision 3.0 Micrel, Inc. MIC861 Electrical Characteristics(5) (Continued) V+ = +5V, V- = 0V, VCM = V+/2; RL = 500kΩ to V+/2; TA = 25°C, bold values indicate –40°C ≤ TA ≤ +85°C, unless noted. Symbol Parameter Condition Min. Typ. Max. Units Input Offset Voltage Note 6 -10 2 10 mV VOS Input Offset Voltage Temperature Coefficient 15 µV/°C IB Input Bias Current 20 pA IOS Input Offset Current 10 pA VCM Input Voltage Range CMRR >60dB 4.2 V CMRR Common Mode Rejection Ratio 0 < VCM < 3.5V 60 80 dB PSRR Power Supply Rejection Ratio Supply voltage change of 1V 45 85 dB RL = 100kΩ, VOUT = 4V peak-to-peak 60 76 dB RL = 500kΩ, VOUT = 4V peak-to-peak 68 83 dB V ±2mV V ±0.7mV V AVOL Large Signal Voltage Gain VOUT Maximum Output Voltage Swing RL = 500kΩ VOUT Minimum Output Voltage Swing RL = 500kΩ GBW Gain-Bandwidth Product RL = 200kΩ, CL = 2pF, VOUT = 0 400 kHz BW –3dB Bandwidth AV = 1, CL = 2pF, RL = 1MΩ 650 kHz SR Slew Rate AV = 1, CL = 2pF, RL = 1MΩ 0.12 V/µs ISC Short-Circuit Output Current IS Supply Current September 9, 2014 V ±0.7mV V ±2mV V Source 10 24 mA Sink 10 24 mA No load 4.6 4 9 µA Revision 3.0 Micrel, Inc. MIC861 Test Circuits Test Circuit 1. AV = 11 Test Circuit 2. AV = 2 Test Circuit 3. AV = 1 Test Circuit 4. AV = –1 Test Circuit 5. Positive Power Supply Rejection Ratio Measurement Test Circuit 6. Closed-Loop Unity Gain Frequency Response Measurement September 9, 2014 5 Revision 3.0 Micrel, Inc. MIC861 DC Typical Characteristics September 9, 2014 6 Revision 3.0 Micrel, Inc. MIC861 AC Typical Characteristics September 9, 2014 7 Revision 3.0 Micrel, Inc. MIC861 Functional Characteristics September 9, 2014 8 Revision 3.0 Micrel, Inc. MIC861 Functional Characteristics (Continued) September 9, 2014 9 Revision 3.0 Micrel, Inc. MIC861 Functional Characteristics (Continued) Applications Information Regular supply bypassing techniques are recommended. A 10µF capacitor in parallel with a 0.1µF capacitor on both the positive and negative supplies is ideal. For best performance, all bypassing capacitors should be located September 9, 2014 as close to the op amp as possible and all capacitors should be low equivalent series inductance (ESL) and equivalent series resistance (ESR). Surface-mount ceramic capacitors are ideal. 10 Revision 3.0 Micrel, Inc. MIC861 Package Information(7) 5-Pin SC70 (C5) Note: 7. Package information is correct as of the publication date. For updates and most current information, go to www.micrel.com. 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 Micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished in this data sheet. This information is not intended as a warranty and Micrel does not assume responsibility for its use. Micrel reserves the right to change circuitry, specifications and descriptions at any time without notice. No license, whether express, implied, arising by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Micrel’s terms and conditions of sale for such products, Micrel assumes no liability whatsoever, and Micrel disclaims any express or implied warranty relating to the sale and/or use of Micrel products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right. 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. © 2014 Micrel, Incorporated. September 9, 2014 11 Revision 3.0