MIC861 Micrel, Inc. 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 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. • • • • • • • • 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 capactive loads (1000pF) Unity gain stable Applications • • • • • Portable equipment PDAs Pagers Cordless Phones Consumer Electronics Ordering Information Part Number Standard Marking MIC861BC5 A33 Pb-Free Marking* Ambient Temp. Range Package A33 –40ºC to +85ºC SC-70-5 MIC861YC5 * Underbar marking may not be to scale. Pin Configuration Functional Pinout IN− V− IN+ 3 2 1 A33 4 5 OUT V+ IN− V− Part Identification 3 2 IN+ 1 4 5 OUT V+ SC-70 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 February 2006 1 M9999-022706 MIC861 Micrel, Inc. 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.) ........................ 260°C Output Short Circuit Current Duration ...................Indefinite Storage Temperature (TS) ......................................... 150°C ESD Rating, Note 3 Supply Voltage (V+ – V–) ........................ +2.43V to +5.25V Ambient Temperature Range...................... –40°C to +85°C Package Thermal Resistance................................ 450°C/W Electrical Characteristics V+ = +2.7V, V– = 0V, VCM = V+/2; RL= 500kΩ to V+/2; TA= 25°C, unless otherwise noted. Bold values indicate –40°C≤ TA≤ +85°C. Symbol Parameter Condition Min Typ Max Units Note 5 –10 Input Offset Voltage Input Offset Voltage Temp Coefficient 15 µV/°C IB Input Bias Current 20 pA IOS VCM Input Offset Current Input Voltage Range CMRR Common-Mode Rejection Ratio PSRR Power Supply Rejection Ratio AVOL Large-Signal Voltage Gain VOUT Maximum Output Voltage Swing GBW Gain-Bandwidth Product BW –3dB Bandwidth VOUT Minimum Output Voltage Swing CMRR > 60dB 2 10 VOS 10 pA 1.8 V 0 < VCM < 1.35V 45 77 dB Supply voltage change of 3V 50 83 dB RL = 100k, VOUT 2V peak to peak 60 74 dB 73 83 dB RL = 500k, VOUT 2V peak to peak RL = 500k V+–2mV V+–0.7mV RL = 200kΩ, CL = 2pF, VOUT = 0 AV = 1, CL = 2pF, RL = 1MΩ AV = 1, CL = 2pF, RL = 1MΩ Slew Rate ISC Short-Circuit Output Current Source IS Supply Current No Load V V–+0.2mV V–+ 2mV RL = 500k SR Sink IB Input Offset Voltage 350 kHz kHz 0.12 V/µs 6 mA 5 4.2 Note 5 –10 Input Offset Voltage Temp Coefficient V 500 mA 9 V+= +5V, V–= 0V, VCM= V+/2; RL= 500kΩ to V+/2; TA= 25°C, unless otherwise noted. Bold values indicate –40°C≤ TA≤ +85°C. VOS mV 2 10 15 µA mV µV/°C Input Bias Current 20 pA IOS Input Offset Current 10 pA Input Voltage Range CMRR > 60dB 4.2 V CMRR Common-Mode Rejection Ratio 0 < VCM < 3.5V 60 80 dB VCM 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 68 83 dB VOUT Maximum Output Voltage Swing GBW Gain-Bandwidth Product BW –3dB Bandwidth VOUT M9999-022706 Minimum Output Voltage Swing RL = 500k, VOUT 4.0V peak to peak RL = 500k V+–2mV V+–0.7mV V V–+0.7mV V–+ 2mV RL = 500k RL = 200kΩ, CL = 2pF, VOUT = 0 AV = 1, CL = 2pF, RL = 1MΩ 2 V 400 kHz 650 kHz February 2006 MIC861 Symbol Micrel, Inc. Parameter SR Slew Rate ISC Short-Circuit Output Current IS Supply Current Condition Min AV = 1, CL = 2pF, RL = 1MΩ Source 10 Sink 10 No Load Typ Max Units 0.12 V/µs 24 mA 24 4.6 mA 9 µA 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. February 2006 3 M9999-022706 MIC861 Micrel, Inc. Test Circuits Test Circuit 1. AV = 11 Test Circuit 2:AV = 2 Test Circuit 3. AV = 1 Test Circuit 4. AV = –1 V+ 10µF 100µF Input 50Ω BNC 0.1µF 10µF 170k 48k 10k 10k MIC861 BNC Output 50Ω 0.1µF All resistors: 1% metal film 100µF 10µF V— Test Circuit 5. Positive Power Supply Rejection Ratio Measurement M9999-022706 4 February 2006 MIC861 Micrel, Inc. DC Performance Characteristics Output Voltage vs. Output Current Output Voltage vs. Output Current Sourcing 5 5 Sinking 4 4 3 3 25°C 30 85°C 1 5 25°C 85°C 0 0 -5 -10 -15 -20 -25 -30 -35 -40 OUTPUT CURRENT (mA) 0 0 30 Sinking 25 -40°C 25°C 20 85°C 10 Offset Voltage vs. Common-Mode Voltage 85°C V+ = 2.7V 7 25°C 6 -40°C 5 4 0.9 25°C 0.8 25°C 0.7 0.7 –40°C 0.5 1 1.5 2 2.5 COMMON-MODE VOLTAGE (V) 100 80 60 Open Loop Gain vs. Resistive Load 2 V+ = 5V 0 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5 SUPPLY VOLTAGE (V) Offset Voltage vs. Temperature 0 0.1 30 0.5 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 COMMON-MODE VOLTAGE (V) 7 5 V+ = 2.7V 1 1 10 100 1000 10000 RESISTIVE LOAD (kΩ) Short Circuit Current vs. Temperature Sourcing 0 -40 -20 0 20 40 60 80 100 TEMPERATURE (°C) 0 -5 -2 20 -10 -4 -5 2.7V -6 -40 -20 0 20 40 60 80 100 TEMPERATURE ( °C) February 2006 2.7V 2 25 5V 5V 3 -1 -3 Supply Current vs. Temperature 4 20 1 –40°C 0.6 6 40 3 V+ = 5V 0.9 0.5 0 85°C 1.1 Offset Voltage vs. Common-Mode Voltage 85°C 0 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5 SUPPLY VOLTAGE (±V) 8 0 0.8 1 1.2 1.4 1.6 1.8 2 2.2 2.4 SUPPLY VOLTAGE (±V) 1 0.6 Offset Voltage vs. Supply Voltage 85°C 1 5 0 5 10 15 20 25 30 OUTPUT CURRENT (mA) 0.8 15 9 -40°C 1.1 25°C 15 1 Short Circuit Current vs. Supply Voltage -40°C 20 10 -40°C Sourcing 25 2 2 Short Circuit Current vs. Supply Voltage 5V 15 -20 5 -25 5 Sinking 2.7V -15 10 2.7V 0 -40 -20 0 20 40 60 80 100 TEMPERATURE (°C) Short Circuit Current vs. Temperature 5V -30 -40 -20 0 20 40 60 80 100 TEMPERATURE (°C) M9999-022706 MIC861 Micrel, Inc. AC Perfomance Characteristics Gain Bandwidth vs. Capacitive Load 425 90 5V 375 325 PSRR vs. Frequency 80 70 2.7V 275 CMRR vs. Frequency 60 50 225 40 175 30 125 20 75 10 25 1 10 100 1000 CAPACITIVE LOAD (pF) CMRR vs. Frequency 100 0 1 V+= 5V 10 100 1k 10k 100k 1M FREQUENCY (Hz) PSRR vs. Frequency 100 Gain Bandwidth and Phase Margin 80 80 60 60 40 40 20 20 0 1 0 V+ = 2.7V 10 100 1k 10k 100k 1M FREQUENCY (Hz) Gain Bandwidth and Phase Margin 50 40 30 20 10 0 -10 Av = 11 -20 V+ = 2.5V V– = –2.5V -30 C = 2pF L -40 R = 200kΩ F -50 10k 1k 100k 1M FREQUENCY (Hz) 225 180 135 90 45 0 -45 -90 -135 -180 -225 Gain Frequency Response 50 40 30 20 10 0 -10 Av = 2 -20 V+ = 1.35V V- = –1.35V -30 C = 2pF L -40 RF = 20kΩ -50 10k 1k 100k 1M FREQUENCY (Hz) M9999-022706 225 180 135 90 45 0 -45 -90 -135 -180 -225 -20 1 V+ = 2.7V 10 100 1k 10k 100k 1M FREQUENCY (Hz) Unity Gain Frequency Response 50 40 30 20 10 0 -10 -20 Av = 1 -30 V+ = 2.5V V– = –2.5V -40 R = 1MΩ L -50 10k 1k 100k 1M FREQUENCY (Hz) Gain Bandwidth and Phase Margin 50 40 30 20 10 0 -10 Av = 2 -20 V+ = 2.5V V- = –2.5V -30 C = 2pF L -40 R = 20kΩ F -50 10k 1k 100k 1M FREQUENCY (Hz) 6 90 80 70 60 50 40 30 20 10 0 V+ = 5V -10 1 10 100 1k 10k 100k 1M FREQUENCY (Hz) 225 180 135 90 45 0 -45 -90 -135 -180 -225 50 40 30 20 10 0 -10 Av = 11 -20 V+ = 1.35V V- = –1.35V -30 C = 2pF L -40 R = 200kΩ F -50 10k 1k 100k 1M FREQUENCY (Hz) Unity Gain Frequency Response 50 40 30 20 10 0 -10 -20 Av = 1 V+ = 1.35V -30 V– = –1.35V -40 RL = 1MkΩ -50 10k 1k 100k 1M FREQUENCY (Hz) 225 180 135 90 45 0 -45 -90 -135 -180 -225 225 180 135 90 45 0 -45 -90 -135 -180 -225 225 180 135 90 45 0 -45 -90 -135 -180 -225 February 2006 MIC861 Micrel, Inc. Close-loop Unity Gain Frequency Response 18 15 AV = 1 V+ = 2.5V V- = -2.5V 0.1µF 1µF 12 0.01µF V+ 1000pF 9 FET Probe 100pF RF 6 3 CL V− 3pF 0 -3 -6 100 February 2006 1k 10k 100k FREQUENCY (Hz) 1M 10M 7 M9999-022706 MIC861 Micrel, Inc. Functional Characteristics 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 = 1MΩ Small Signal Pulse Response Test Circuit 3: AV = 1 Small Signal Pulse Response Test Circuit 3: AV = 1 INPUT 50mV/div TIME 10µs/div OUTPUT 50mV/div TIME 250ms/div Small Signal Pulse Response Test Circuit 4: AV = -1 Small Signal Pulse Response Test Circuit 4: AV = -1 INPUT 50mV/div TIME 10µs/div AV = -1 V+ = 1.35V V- = -1.35V CL = 2pF RL = 5kΩ RF = 20kΩ TIME 10µs/div M9999-022706 AV = 1 V+ = 2.5V V- = -2.5V CL = 50pF RL = 1MΩ AV = -1 V+ = 2.5V V- = -2.5V CL = 2pF RL = 5kΩ RF = 20kΩ OUTPUT 50mV/div OUTPUT 50mV/div AV = 1 V+ = 1.35V V- = -1.35V CL = 50pF RL = 1MΩ OUTPUT 50mV/div INPUT 50mV/div AV = 1 V+ = 2.5V V- = -2.5V CL = 2pF RL = 1MΩ TIME 10µs/div INPUT 50mV/div OUTPUT 50mV/div INPUT 50mV/div Small Signal Pulse Response Test Circuit 3: AV = 1 TIME 10µs/div 8 February 2006 MIC861 Micrel, Inc. INPUT 50mV/div Small Signal Pulse Response Test Circuit 4: AV = -1 TIME 10µs/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 = 1MΩ RF = 20kΩ AV = 2 V+ = 2.5V V- = -2.5V CL = 2pF RL = 1MΩ RF = 20kΩ ∆VPP = 5V TIME 250µs/div TIME 250µs/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 = 5kΩ RF = 20kΩ ∆VPP = 2.7V OUTPUT 2V/div OUTPUT 1V/div AV = -1 V+ = 2.5V V- = -2.5V CL = 2pF RL = 1MΩ RF = 20kΩ OUTPUT 50mV/div AV = -1 V+ = 1.35V V- = -1.35V CL = 2pF RL = 1MΩ RF = 20kΩ OUTPUT 50mV/div INPUT 50mV/div Small Signal Pulse Response Test Circuit 4: AV = -1 TIME 250µs/div February 2006 AV = 2 V+ = 2.5V V- = -2.5V CL = 2pF RL = 5kΩ RF = 20kΩ ∆VPP = 5V TIME 250µs/div 9 M9999-022706 MIC861 Micrel, Inc. 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 = 5kΩ OUTPUT 500mV/div AV = 1 V+ = 1.35V V- = -1.35V CL = 100pF RL = 5kΩ Positive Slew Rate = 0.14V/µs Negative Slew Rate = 0.22V/µs TIME 10µs/div M9999-022706 Positive Slew Rate = 0.13V/µs Negative Slew Rate = 0.18V/µs TIME 10µs/div 10 February 2006 MIC861 Micrel, Inc. Applications 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). Surface-mount ceramic capacitors are ideal. February 2006 11 M9999-022706 MIC861 Micrel, Inc. Package Information SC70-5 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 This 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. © 2002 Micrel, Inc. M9999-022706 12 February 2006