MIC861 Micrel MIC861 TeenyTM Ultra Low Power Op Amp Preliminary Information General Description Features The MIC861 is a rail-to-rail output, input common-mode to ground, operational amplifier in TeenyTM SC70 packaging. The MIC861 provides 400kHz gain-bandwidth product while consuming an incredibly low 4.6A 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. * * * * * * * * TeenyTM SC70 packaging 400kHz gain-bandwidth product 650kHz, -3dB bandwidth 4.6A supply current Rail-to-Rail output Ground sensing at input (common mode to GND) Drives large capactive loads (1000pF) Unity gain stable Applications * * * * * Portable equipment PDAs Pagers Cordless Phones Consumer Electronics Ordering Information Part Number Marking Ambient Temp. Range* Package MIC861BC5 A33 -40C to +85C SC70-5 Pin Configuration Functional Pinout IN-- V-- IN+ IN-- V-- IN+ 3 2 1 Part Identification 3 2 1 A33 4 5 OUT V+ 4 5 OUT V+ SC-70 Teeny is a trademark of Micrel, Inc. Micrel, Inc. * 1849 Fortune Drive * San Jose, CA 95131 * USA * tel + 1 (408) 944-0800 * fax + 1 (408) 944-0970 * http://www.micrel.com June 2001 1 MIC861 MIC861 Micrel Absolute Maximum Ratings (Note 1) Operating Ratings (Note 2) Supply Voltage (VV+ - V-) ......................................... +6.0V Differentail Input Voltage (VIN+ - VIN-), Note 4 ...... +6.0V Input Voltage (VIN+ - VIN-) .................. V+ + 0.3V, V- -0.3V Lead Temperature (soldering, 5 sec.) ....................... 260C Output Short Circuit Current Duration .................. Indefinite Storage Temperature (TS) ........................................ 150C ESD Rating, Note 3 Supply Voltage (V+ - V-) ........................ +2.43V to +5.25V Ambient Temperature Range ..................... -40C to +85C Package Thermal Resistance ............................... 450C/W Electrical Characteristics V+ = +2.7V, V- = 0V, VCM = V+/2; RL= 500k to V+/2; TA= 25C, unless otherwise noted. Bold values indicate -40C TA +85C. Symbol Parameter Condition Min Typ Max Units VOS Input Offset Voltage Note 5 -10 2 10 mV Input Offset Voltage Temp Coefficient 15 V/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 = 100k, VOUT 2V peak to peak 60 74 dB RL = 500k, VOUT 2V peak to peak 73 83 dB VOUT Maximum Output Voltage Swing RL = 500k VOUT Minimum Output Voltage Swing RL = 500k GBW Gain-Bandwidth Product RL = 200k, CL = 2pF, VOUT = 0 350 kHz BW -3dB Bandwidth AV = 1, CL = 2pF, RL = 1M 500 kHz SR Slew Rate AV = 1, CL = 2pF, RL = 1M 0.12 V/s ISC Short-Circuit Output Current Source 6 mA Sink 5 mA IS Supply Current V+-2mV V+-0.7mV V V-+0.2mV V-+ 2mV No Load 4.2 V A 9 V+= +5V, V-= 0V, VCM= V+/2; RL= 500k to V+/2; TA= 25C, unless otherwise noted. Bold values indicate -40C TA +85C. VOS Input Offset Voltage Note 5 -10 2 10 mV Input Offset Voltage Temp Coefficient 15 V/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 AVOL Large-Signal Voltage Gain RL = 100k, VOUT 4.0V peak to peak 60 76 dB RL = 500k, VOUT 4.0V peak to peak 68 83 dB VOUT Maximum Output Voltage Swing RL = 500k VOUT Minimum Output Voltage Swing RL = 500k GBW Gain-Bandwidth Product RL = 200k, CL = 2pF, VOUT = 0 400 kHz BW -3dB Bandwidth AV = 1, CL = 2pF, RL = 1M 650 kHz MIC861 V+-2mV V+-0.7mV V V-+0.7mV V-+ 2mV 2 V June 2001 MIC861 Micrel Symbol Parameter Condition SR Slew Rate AV = 1, CL = 2pF, RL = 1M ISC Short-Circuit Output Current Source Sink IS Supply Current Min No Load Typ Max Units 0.12 V/s 10 24 mA 10 24 mA 4.6 A 9 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. Pin 4 is ESD sensetive 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. Note 5. The offset voltage distribution is centered around 0V. The typical offset number shown, is equal to the standard deviation of the voltage offset distribution. June 2001 3 MIC861 MIC861 Micrel Test Circuits 200k 20k V+ V+ 0.1F 10F 0.1F 10F 20k 20k MIC861 MIC861 RF RF FET PROBE 0.1F 10F 501/2 FET PROBE FET PROBE 0.1F 10F 501/2 RL 5k FET PROBE V V Test Circuit 2:AV = 2 Test Circuit 1. AV = 11 20k V+ V+ 0.1F 10F 0.1F 10F 20k RF MIC861 MIC861 RF FET PROBE FET PROBE 0.1F 10F 501/2 501/2 501/2 0.1F 10F FET PROBE FET PROBE V V Test Circuit 3. AV = 1 Test Circuit 4. AV = -1 V+ 10F 100F 50 0.1F BNC Input 10F 170k 48k BNC 10k 10k MIC861 Output 50 0.1F All resistors: 1% metal film 100F 10F V-- Test Circuit 5. Positive Power Supply Rejection Ratio Measurement MIC861 4 June 2001 MIC861 Micrel DC Performance Characteristics Output Voltage vs. Output Current 3 -40C 1 4 3 85C 2 1 -40C 0 0 1.1 15 85C 10 5 OFFSET VOLTAGE (V) 0 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5 SUPPLY VOLTAGE (V) 1 0.9 0.8 25C 0.7 -40C 0.6 0.5 0 25C 6 -40C 4 3 2 1 OPEN LOOP GAIN (dB) OFFSET VOLTAGE (V) 85C 7 0 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5 SUPPLY VOLTAGE (V) 80 60 -2 5V -4 2.7V -6 -40 -20 0 20 40 60 80 100 TEMPERATURE (C) V+ = 5V V+ = 2.7V 20 0 0.1 25C 0.8 0.7 0.5 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 COMMON-MODE VOLTAGE (V) Supply Current vs. Temperature Sourcing 25 20 5V 15 10 5 2.7V 0 -40 -20 0 20 40 60 80 100 TEMPERATURE (C) 5 5V 6 5 2.7V 4 3 2 1 0 -40 -20 0 20 40 60 80 100 TEMPERATURE (C) 1 10 100 1000 10000 RESISTIVE LOAD (k) 30 -40C 0.6 Short Circuit Current vs. Temperature SHORT CIRCUIT CURRENT (mA) OFFSET VOLTAGE (mV) -1 June 2001 0.9 7 40 Offset Voltage vs. Temperature 0 -5 85C 100 8 -3 V+ = 5V 1 Open Loop Gain vs. Resistive Load 9 5 1.1 0.5 1 1.5 2 2.5 COMMON-MODE VOLTAGE (V) Offset Voltage vs. Supply Voltage 85C 5 SUPPLY CURRENT (A) OUTPUT CURRENT (mA) 20 25C 10 Offset Voltage vs. Common-Mode Voltage 85C V+ = 2.7V Sinking 25C 15 Offset Voltage vs. Common-Mode Voltage 30 -40C 20 0 0.8 1 1.2 1.4 1.6 1.8 2 2.2 2.4 SUPPLY VOLTAGE (V) OFFSET VOLTAGE (V) Short Circuit Current vs. Supply Voltage 25 25 5 10 15 20 25 30 OUTPUT CURRENT (mA) - -40C Sourcing Short Circuit Current vs. Temperature SHORT CIRCUIT CURRENT (mA) 0 0 25C 85C - 5 -10 -15 - 20 -25 -30 - 35 - 40 OUTPUT CURRENT (mA) 25C OUTPUT CURRENT (mA) OUTPUT VOLTAGE (V) 5 Sinking 4 2 Short Circuit Current vs. Supply Voltage 30 Sourcing 5 OUTPUT VOLTAGE (V) Output Voltage vs. Output Current 0 Sinking -5 2.7V -10 -15 -20 5V -25 -30 -40 -20 0 20 40 60 80 100 TEMPERATURE (C) MIC861 MIC861 Micrel AC Perfomance Characteristics Gain Bandwidth vs. Capacitive Load PSRR vs. Frequency 90 90 375 80 325 70 80 70 5V CMRR (dB) 2.7V 275 225 175 60 50 40 30 125 20 75 10 25 1 PSRR (dB) 425 GAIN BANDWIDTH (kHz) CMRR vs. Frequency 0 1 10 100 1000 CAPACITIVE LOAD (pF) 0 V+ = 5V -10 1 10 100 1k 10k 100k 1M FREQUENCY (Hz) V+= 5V 10 100 1k 10k 100k 1M FREQUENCY (Hz) Gain Bandwidth and Phase Margin 180 40 180 30 135 30 135 20 90 20 90 10 45 10 45 0 0 0 0 -10 AV = 11 V+ = 1.35V V- = -1.35V CL = 2pF RF = 200k -20 -30 -40 1k 10k 100k FREQUENCY (Hz) GAIN (dB) -45 -10 -90 -20 -135 -30 -180 -40 -45 AV = 11 V+ = 2.5V V- = -2.5V CL = 2pF RF = 200k 1k 1M Gain Frequency Response -90 -135 -180 10k 100k FREQUENCY (Hz) 1M Gain Bandwidth and Phase Margin 40 180 30 135 30 135 20 90 20 90 10 45 10 45 0 0 0 0 GAIN (dB) -10 -45 -10 -20 -90 -20 -135 -30 -180 -40 -40 1k MIC861 AV = 2 V+ = 1.35V V- = -1.35V CL = 2pF RF = 20k 10k 100k FREQUENCY (Hz) 1k 1M 6 PHASE () 180 PHASE () 40 -30 PHASE () 40 PHASE () GAIN (dB) 40 30 20 10 Gain Bandwidth and Phase Margin GAIN (dB) 60 50 -45 -90 AV = 2 V+ = 2.5V V- = -2.5V CL = 2pF RF = 20k -135 -180 10k 100k FREQUENCY (Hz) 1M June 2001 MIC861 Micrel Unity Gain Frequency Response 180 40 180 30 135 30 135 20 90 20 90 10 45 10 45 0 0 0 0 GAIN (dB) -10 -45 -10 -20 -90 -20 -135 -30 -180 -40 -30 -40 AV = 1 V+ = 1.35V V- = -1.35V RL = 1M 1k 10k 100k FREQUENCY (Hz) -45 AV = 1 V+ = 2.5V V- = -2.5V CL = 2pF RL = 1M 1k 1M PHASE () 40 PHASE () GAIN (dB) Unity Gain Frequency Response -90 -135 -180 10k 100k FREQUENCY (Hz) 1M Close-loop Unity Gain Frequency Response 18 15 AV = 1 V+ = 2.5V V- = -2.5V 0.1F 1F GAIN (dB) 12 0.01F V+ 1000pF FET Probe 9 100pF RF CL 6 V-- 3 3pF 0 -3 -6 100 June 2001 1k 10k 100k FREQUENCY (Hz) 1M 10M 7 MIC861 MIC861 Micrel Small Signal Pulse Response Test Circuit 3: AV = 1 INPUT 50mV/div OUTPUT 50mV/div AV = 1 V+ = 1.35V V- = -1.35V CL = 2pF RL = 1M Small Signal Pulse Response Test Circuit 3: AV = 1 Small Signal Pulse Response Test Circuit 3: AV = 1 INPUT 50mV/div TIME 10s/div OUTPUT 50mV/div Small Signal Pulse Response Test Circuit 4: AV = -1 Small Signal Pulse Response Test Circuit 4: AV = -1 INPUT 50mV/div TIME 250ms/div AV = -1 V+ = 1.35V V- = -1.35V CL = 2pF RL = 5k RF = 20k AV = -1 V+ = 2.5V V- = -2.5V CL = 2pF RL = 5k RF = 20k OUTPUT 50mV/div OUTPUT 50mV/div AV = 1 V+ = 2.5V V- = -2.5V CL = 50pF RL = 1M TIME 10s/div OUTPUT 50mV/div INPUT 50mV/div AV = 1 V+ = 1.35V V- = -1.35V CL = 50pF RL = 1M TIME 10s/div MIC861 AV = 1 V+ = 2.5V V- = -2.5V CL = 2pF RL = 1M TIME 10s/div INPUT 50mV/div OUTPUT 50mV/div INPUT 50mV/div Small Signal Pulse Response Test Circuit 3: AV = 1 TIME 10s/div 8 June 2001 MIC861 Micrel INPUT 50mV/div Small Signal Pulse Response Test Circuit 4: AV = -1 TIME 10s/div Rail to Rail Output Operation Rail to Rail Output Operation INPUT 2V/div VPP = 2.7V OUTPUT 2V/div AV = 2 V+ = 1.35V V- = -1.35V CL = 2pF RL = 1M RF = 20k AV = 2 V+ = 2.5V V- = -2.5V CL = 2pF RL = 1M RF = 20k VPP = 5V TIME 250s/div TIME 250s/div Rail to Rail Output Operation Rail to Rail Output Operation INPUT 2V/div OUTPUT 2V/div INPUT 2V/div TIME 10ms/div INPUT 1V/div AV = 2 V+ = 1.35V V- = -1.35V CL = 2pF RL = 5k RF = 20k VPP = 2.7V OUTPUT 2V/div OUTPUT 1V/div AV = -1 V+ = 2.5V V- = -2.5V CL = 2pF RL = 1M RF = 20k OUTPUT 50mV/div AV = -1 V+ = 1.35V V- = -1.35V CL = 2pF RL = 1M RF = 20k OUTPUT 50mV/div INPUT 50mV/div Small Signal Pulse Response Test Circuit 4: AV = -1 TIME 250s/div June 2001 AV = 2 V+ = 2.5V V- = -2.5V CL = 2pF RL = 5k RF = 20k VPP = 5V TIME 250s/div 9 MIC861 MIC861 Micrel Large Signal Pulse Response Test Circuit 3: AV = 1 Large Signal Pulse Response Test Circuit 3: AV = 1 OUTPUT 500mV/div AV = 1 V+ = 2.5V V- = -2.5V CL = 100pF RL = 5k OUTPUT 500mV/div AV = 1 V+ = 1.35V V- = -1.35V CL = 100pF RL = 5k Positive Slew Rate = 0.14V/s Negative Slew Rate = 0.22V/s TIME 10s/div MIC861 Positive Slew Rate = 0.13V/s Negative Slew Rate = 0.18V/s TIME 10s/div 10 June 2001 MIC861 Micrel Applications Information Power Supply Bypassing Regular supply bypassing techniques are recommended. A 10F capacitor in parallel with a 0.1F 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. June 2001 11 MIC861 MIC861 Micrel Package Information 0.65 (0.0256) BSC 1.35 (0.053) 2.40 (0.094) 1.15 (0.045) 1.80 (0.071) 2.20 (0.087) 1.80 (0.071) DIMENSIONS: MM (INCH) 1.00 (0.039) 1.10 (0.043) 0.80 (0.032) 0.80 (0.032) 0.10 (0.004) 0.00 (0.000) 0.30 (0.012) 0.15 (0.006) 0.18 (0.007) 0.10 (0.004) 0.30 (0.012) 0.10 (0.004) SC70-5 MICREL INC. TEL 1849 FORTUNE DRIVE SAN JOSE, CA 95131 + 1 (408) 944-0800 FAX + 1 (408) 944-0970 WEB USA http://www.micrel.com This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel Inc. (c) 2001 Micrel Incorporated MIC861 12 June 2001