MIC862 Dual Ultra-Low-Power Op Amp in SOT23-8 General Description Features The MIC862 is a dual low-power operational amplifier in an SOT23-8 package. It is designed to operate in the 2V to 5V range, rail-to-rail output, with input common-mode to ground. The MIC862 provides 3MHz gain-bandwidth product while consuming only a 31μA/channel supply current. With low supply voltage and SOT23-8 packaging, MIC862 provides two channels as general-purpose amplifiers for portable and battery-powered applications. Its package provides the maximum performance available while maintaining an extremely slim form factor. The minimal power consumption of this IC maximizes the battery life potential. Datasheets and support documentation are available on Micrel’s website at: www.micrel.com. SOT23-8 package 3MHz gain-bandwidth product 5MHz, –3dB bandwidth 31µA supply current Rail-to-rail output Ground sensing at input (common mode to GND) Drive large capacitive loads Unity gain stable Applications Portable equipment Medical instruments PDAs Pagers Cordless phones Consumer electronics Typical Application Peak Detector Circuit for AM Radio Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com July 29, 2014 Revision 3.0 Micrel, Inc. MIC862 Ordering Information Part Number Marking Ambient Temperature Range Package MIC862TYM8 A34 –40° to +85°C SOT23-8 Pin Configuration SOT23-8 (M8) (Top View) Pin Description Pin Number Pin Name 1 OUTA 2 INA- Amplifier A inverting input 3 INA+ Amplifier A non-inverting input 4 V- 5 INB+ Amplifier B non-inverting input 6 INB- Amplifier B inverting input 7 OUTB 8 V+ July 29, 2014 Pin Function Amplifier A output Negative supply Amplifier B output Positive supply 2 Revision 3.0 Micrel, Inc. MIC862 Absolute Maximum Ratings(1) Operating Ratings(2) Supply Voltage (VV+ to VV-).......................................... +6.0V (3) Differential Input Voltage (VIN+ to VIN-) ...................... +6.0V Input Voltage (VIN+ to VIN-) .................. VV+ + 0.3V, VV- - 0.3V Lead Temperature (soldering, 10s) ............................ 260°C Output Short-Circuit Current Duration ....................Indefinite Operating Temperature ............................. –40°C to +125°C Storage Temperature (Ts).......................................... 150°C (4) ESD Rating ................................................. ESD Sensitive Supply Voltage (V+ to V-) .......................... +2.0V to +5.25V Ambient Temperature (TA) .......................... –40°C to +85°C Package Thermal Resistance JA (Using 4 Layer PCB) .................................. 100°C/W JC (Using 4 Layer PCB) .................................... 70°C/W Electrical Characteristics(5) V+ = +2V, 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 Input Offset Voltage VOS Min. Typ. Max. Units -6 0.1 6 mV -5 0.1 5 mV 0.5 mV Input Offset Voltage Temperature Coefficient 6 µV/°C IB Input Bias Current 10 pA IOS Input Offset Current 5 pA VCM Input Voltage Range (from V-) CMRR > 50dB 0.5 1 V CMRR Common-Mode Rejection Ratio 0 < VCM < 1V 45 75 dB PSRR Power Supply Rejection Ratio Supply voltage change of 2V to 2.7V 50 78 dB RL = 5kΩ, VOUT = 1.4VPP 66 74 dB RL = 100kΩ, VOUT = 1.4VPP 75 89 dB 85 AVOL Differential Offset Voltage Large-Signal Voltage Gain RL = 500kΩ, VOUT = 1.4VPP VOUT Maximum Output Voltage Swing 100 dB RL = 5kΩ V+ -80mV V+ -55mV V RL = 500kΩ V+ -3mV V+ -1.4mV RL = 5kΩ V V- +14mV V- +20mV V V- +0.85mV V- +3mV V VOUT Minimum Output Voltage Swing GBW Gain-Bandwidth Product RL = 20kΩ, CL = 2pF, AV = 11 2.1 MHz PM Phase Margin RL = 20kΩ, CL = 2pF, AV = 11 57 ° BW –3dB Bandwidth RL = 1MΩ, CL = 2pF, AV = 1 4.2 MHz SR Slew Rate RL = 1MΩ, CL = 2pF, AV = 1 Positive Slew Rate = 1.5V/µs 2 V/µs ISC Short-Circuit Ouptut Current IS Supply Current (per Op Amp) No Load Channel-to-Channel Crosstalk Note 6 RL = 500kΩ Source 1.8 2.6 mA Sink 1.5 2.2 mA 27 -100 43 µA dB Notes: 1. Exceeding the absolute maximum ratings may damage the device. 2. The device is not guaranteed to function outside its operating ratings. 3. Exceeding the maximum differential input voltage will damage the input stage and degrade performance. In particular, input bias current is likely to increase. 4. Devices are ESD sensitive. Handling precautions are recommended. Human body model, 1.5kΩ in series with 100pF. 5. Specification for packaged product only. 6. DC signal referenced to input. Refer to Typical Characteristics graphs for AC performance. July 29, 2014 3 Revision 3.0 Micrel, Inc. MIC862 Electrical Characteristics(5) (Continued) 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 Input Offset Voltage VOS Min. Typ. Max. Units -6 0.1 6 mV -5 0.1 5 mV 0.5 mV Input Offset Voltage Temperature Coefficient 6 µV/°C IB Input Bias Current 10 pA IOS Input Offset Current 5 pA VCM Input Voltage Range (from V-) CMRR PSRR AVOL Differential Offset Voltage Common-Mode Rejection Ratio Power Supply Rejection Ratio Large-Signal Voltage Gain CMRR > 60dB 1 1.8 V 0 < VCM < 1.35V 65 83 dB Supply voltage change of 2.7V to 3V 60 85 dB RL = 5kΩ, VOUT = 2VPP 65 77 dB RL = 100kΩ, VOUT = 2VPP 80 90 dB RL = 500kΩ, VOUT = 2VPP 90 101 dB GBW Gain-Bandwidth Product RL = 20kΩ, CL = 2pF, AV = 11 2.3 MHz PM Phase Margin RL = 20kΩ, CL = 2pF, AV = 11 50 ° BW –3dB Bandwidth RL = 1MΩ, CL = 2pF, AV = 1 4.2 MHz SR Slew Rate RL = 1MΩ, CL = 2pF, AV = 1 Positive Slew Rate = 1.5V/µs 3 V/µs ISC Short-Circuit Ouptut Current IS Supply Current (per Op Amp) No Load Channel-to-Channel Crosstalk Note 6 July 29, 2014 Source 4.5 6.3 mA Sink 4.5 6.2 mA 28 -120 4 45 µA dB Revision 3.0 Micrel, Inc. MIC862 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 Input Offset Voltage VOS Min. Typ. Max. Units -6 0.1 6 mV -5 0.1 5 mV 0.5 mV Input Offset Voltage Temperature Coefficient 6 µV/°C IB Input Bias Current 10 pA IOS Input Offset Current 5 pA VCM Input Voltage Range (from V-) CMRR PSRR AVOL Differential Offset Voltage Common-Mode Rejection Ratio Power Supply Rejection Ratio Large-Signal Voltage Gain CMRR > 60dB 3.5 4.1 V 0 < VCM < 3.5V 60 87 dB Supply voltage change of 3V to 5V 60 92 dB RL = 5kΩ, VOUT = 4.8VPP 65 73 dB RL = 100kΩ, VOUT = 4.8VPP 80 86 dB RL = 500kΩ, VOUT = 4.8VPP 89 96 dB RL = 5kΩ V+ -50mV V+ -37mV V RL = 500kΩ V+ -3mV V+ -1.3mV V VOUT Maximum Output Voltage Swing VOUT Minimum Output Voltage Swing GBW Gain-Bandwidth Product PM Phase Margin BW –3dB Bandwidth SR Slew Rate ISC Short-Circuit Ouptut Current IS Supply Current (per Op Amp) No Load Channel-to-Channel Crosstalk Note 6 July 29, 2014 RL = 5kΩ V- +24mV V- +40mV V RL = 500kΩ V- +0.7mV V- +3mV V RL = 20kΩ, CL = 2pF, AV = 11 3 MHz 45 ° RL = 1MΩ, CL = 2pF, AV = 1 5 MHz RL = 1MΩ, CL = 2pF, AV = 1 Positive Slew Rate = 1.5V/µs 4 V/µs Source 17 23 mA Sink 18 27 mA 31 -120 5 47 µA dB Revision 3.0 Micrel, Inc. MIC862 Typical Characteristics July 29, 2014 6 Revision 3.0 Micrel, Inc. MIC862 Typical Characteristics (Continued) July 29, 2014 7 Revision 3.0 Micrel, Inc. MIC862 Typical Characteristics (Continued) July 29, 2014 8 Revision 3.0 Micrel, Inc. MIC862 Functional Characteristics July 29, 2014 9 Revision 3.0 Micrel, Inc. MIC862 Functional Characteristics (Continued) July 29, 2014 10 Revision 3.0 Micrel, Inc. MIC862 Functional Characteristics (Continued) July 29, 2014 11 Revision 3.0 Micrel, Inc. MIC862 Capacitive Load When driving a large capacitive load, a resistor of 500Ω is recommended to be connected between the op amp output and the capacitive load to avoid oscillation. Application Information 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). Surfacemount ceramic capacitors are ideal. Supply and Loading Resistive Considerations The MIC862 is intended for single-supply applications configured with a grounded load. It is not advisable to operate the MIC862 under either of the following conditions: A grounded load and split supplies (±V) A single supply where the load is terminated above ground. Under the above conditions, if the load is less than 20kΩ and the output swing is greater than 1V (peak), there may be some instability when the output is sinking current. July 29, 2014 12 Revision 3.0 Micrel, Inc. MIC862 Package Information(7) SOT-23-8 (M8) Note: 7. Package information is correct as of the publication date. For updates and most current information, go to www.micrel.com. July 29, 2014 13 Revision 3.0 Micrel, Inc. MIC862 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. July 29, 2014 14 Revision 3.0