Data Sheet LMV321 FEATURES ■ 130μA supply current ■ 1MHz gain bandwidth ■ Input voltage range with 5V supply: -0.2V to 4.2V ■ Output voltage range with 5V supply: 0.065V to 4.99V ■ >1V/μs slew rate ■ No crossover distortion ■ Fully specified at 2.7V and 5V supplies ■ LMV321: Pb-free TSOT-5 The LMV321 is a single channel, low cost, voltage feedback amplifier. The LMV321 consumes only 130μA of supply current and is designed to operate from a supply range of 2.7V to 5.5V (±1.35 to ±2.75). The input voltage range extends 200mV below the negative rail and 800mV below the positive rail. The LMV321 is fabricated on a CMOS process. It offers 1MHz gain bandwidth product and >1V/μs slew rate. The combination of low power, low supply voltage operation, and rail-to-rail performance make the LMV321 well suited for battery-powered systems. The LMV321 is packaged in the space saving TSOT-5 package. TSOT-5 package is pin compatible with the SOT23-5 package. ■ Typical Performance Examples Vout vs. Vcm Slew Rate vs. Supply Voltage 2XWSXW9ROWDJH9 96 9 6OHZ5DWH9 6OHZ5DWH9ʅV APPLICATIONS Portable/battery-powered applications ■ Mobile communications, cell phones, pagers ■ ADC buffer ■ Active filters ■ Portable test instruments ■ Signal conditioning ■ Medical Equipment ■ Portable medical instrumentation General Description 5LVLQJ(GJH $9 5/ Nё sŝŶ сϭsƉƉ Rev 1 )DOOLQJ(GJH 9&0 9 6XSSO\9ROWDJH9 Ordering Information Part Number Package Pb-Free RoHS Compliant Operating Temperature Range Packaging Method LMV321IST5X* TSOT-5 Yes Yes -40°C to +85°C Reel Moisture sensitivity level for all parts is MSL-1. *Advance Information, contact CADEKA for availability. ©2009-2012 CADEKA Microcircuits, LLC LMV321 General Purpose, Rail-to-Rail Output Amplifier General Purpose, Rail-to-Rail Output Amplifier Rail-to-Rail Amplifiers www.cadeka.com Data Sheet LMV321 Pin Assignments1 LMV321 Pin Configuration +IN 1 2 -IN 3 +VS + - 4 OUT Pin Name Description 1 +IN Positive input 2 -VS Negative supply 3 -IN Negative input 4 OUT Output 5 +VS Positive supply LMV321 General Purpose, Rail-to-Rail Output Amplifier -V S 5 Pin No. Notes: 1.Pin compatible to SOT23-5. Rev 1 ©2009-2012 CADEKA Microcircuits, LLC www.cadeka.com 2 Data Sheet Absolute Maximum Ratings The safety of the device is not guaranteed when it is operated above the “Absolute Maximum Ratings”. The device should not be operated at these “absolute” limits. Adhere to the “Recommended Operating Conditions” for proper device function. The information contained in the Electrical Characteristics tables and Typical Performance plots reflect the operating conditions noted on the tables and plots. Min Supply Voltage Input Voltage Range Continuous Output Current Max Unit 7 V LMV321 General Purpose, Rail-to-Rail Output Amplifier Parameter -VS-0.4V +VS V Output is protected against momentary short circuit Reliability Information Parameter Min Junction Temperature Storage Temperature Range Typ -65 Lead Temperature (Soldering, 10s) Package Thermal Resistance 5-Lead TSOT Max Unit 150 150 °C °C 260 °C 221 °C/W Notes: Package thermal resistance (θJA), JDEC standard, multi-layer test boards, still air. ESD Protection Product TSOT-5 Human Body Model (HBM) 2kV Charged Device Model (CDM) 2kV Recommended Operating Conditions Parameter Min Operating Temperature Range Supply Voltage Range Typ Max Unit -40 +85 °C 2.7 5.5 V Rev 1 ©2009-2012 CADEKA Microcircuits, LLC www.cadeka.com 3 Data Sheet Electrical Characteristics at +2.7V TA = 25°C, VS = +2.7V, Rf = Rg =10 KΩ, RL = 10kΩ to VS/2, G = 2; unless otherwise noted. Symbol Parameter Conditions Min Typ Max Units 1.7 7 mV DC Performance Input Offset Voltage dVIO Average Drift Ib Input Bias Current <1 250 nA IOS Input Offset Current <1 50 nA 5 µV/°C CMRR Common Mode Rejection Ratio 0V ≤ VCM ≤ 1.7V 50 63 dB PSRR Power Supply Rejection Ratio 2.7V ≤ V+ ≤ 5V, VO=1V, VCM=1V 50 60 dB CMIR Common Mode Input Range For VCM ≤ 50 dB 0 -0.2 V VOUT Output Voltage Swing RL = 10kΩ to VS / 2 V+ -100 V+ -10 1.9 IS Supply Current 1.7 V mV 60 180 mV 110 170 μA AC Performance GBWP Gain Bandwidth Product Φm Phase Margin CL=200 pF 60 ° Gm Gain Margin 10 dB en Input Voltage Noise 46 nV/√Hz f = 1kHz 1 MHz Notes: Min max specifications are guaranteed by testing, design, or characterization LMV321 General Purpose, Rail-to-Rail Output Amplifier VIO Rev 1 ©2009-2012 CADEKA Microcircuits, LLC www.cadeka.com 4 Data Sheet Electrical Characteristics at +5V TA = 25°C, VS = +5V, Rf = Rg =10kΩ, RL = 10kΩ to VS/2, G = 2; unless otherwise noted. Boldface limits apply at the temperature extremes. Symbol Parameter Conditions Min Typ Max Units DC Performance Input Offset Voltage 1.7 7 mV 9 dVIO Average Drift Ib Input Bias Current 5 <1 µV/°C 250 nA 500 IOS Input Offset Current <1 50 150 nA CMRR Common Mode Rejection Ratio 0V ≤ VCM ≤ 4V 50 65 dB PSRR Power Supply Rejection Ratio 2.7V ≤ V+ ≤ 5V, VO=1V, VCM=1V 50 60 dB CMIR Common Mode Input Range For VCM ≤ 50 dB 0 -0.2 4.2 AOL Open-Loop Gain RL = 2kΩ 15 V 4 100 V/mV 10 VOUT Output Voltage Swing RL = 2kΩ to VS / 2 V+ -300 V+ -400 V V+ -40 120 mV 300 mV 400 RL = 10kΩ to VS / 2 V+ -100 V+ -200 V+ -10 65 mV 180 mV 280 ISC IS Short Circuit Output Current Sourcing VO=0V 5 60 Sinking VO=5V 10 160 Supply Current 130 mA mA 250 μA 350 AC Performance SR Slew Rate GBWP Gain Bandwidth Product >1 V/µs 1 MHz Rev 1 CL=200 pF Φm Phase Margin 60 ° Gm Gain Margin 10 dB en Input Voltage Noise 39 nV/√Hz f = 1kHz Notes: Min max specifications are guaranteed by testing, design, or characterization ©2009-2012 CADEKA Microcircuits, LLC www.cadeka.com LMV321 General Purpose, Rail-to-Rail Output Amplifier VIO 5 Data Sheet Typical Performance Characteristics at +5V - Continued TA = 25°C, VS = +5V, Rf = Rg =10kΩ, RL = 10kΩ to VS/2, G = 2; unless otherwise noted. VIO vs. CMR +2.7V VIO vs. CMR +5V 9,2 P9 9,2 P9 9 9&0 9 VOUT vs. VCM +2.7V vs.Signal VCM +5V Non-Inverting Non-Inverting Non-InvertingVSmall Small Small Signal Signal Pulse Pulse Pulse Response Response Response OUT 96 9 2XWSXW9ROWDJH9 96 9 ,QSXW&XUUHQWQ$ 7 & 7 & Input Current vs. Temperature Rev 1 Supply Current vs. Supply Voltage 9&0 9 9&0 9 6XSSO\&XUUHQW 6XSSO\&XUUHQWʅͿ 9&0 9 2XWSXW9ROWDJH9 96 7 & 96 9 9LQ 96 6XSSO\9ROWDJH9 ©2009-2012 CADEKA Microcircuits, LLC LMV321 General Purpose, Rail-to-Rail Output Amplifier 96 9 7HPSHUDWXUH& www.cadeka.com 6 Data Sheet Typical Performance Characteristics at +5V - Continued TA = 25°C, VS = +5V, Rf = Rg =10kΩ, RL = 10kΩ to VS/2, G = 2; unless otherwise noted. Sinking Current vs. Output Voltage +2.7V Sinking Current vs. Output Voltage +5V ,6,1. P$ ,6,1. P$ 96 9 2XWSXW9ROWDJH5HIHUHQFHWR*1'9 Sourcing Current vs. Output Voltage +2.7V Sourcing Current vs.Signal Output Voltage +5V Non-Inverting Non-Inverting Non-Inverting Small Small Small Signal Signal Pulse Pulse Pulse Response Response Response 96 9 96 9 Short Circuit Current vs. Temperature (Sinking) Rev 1 2XWSXW9ROWDJH5HIHUHQFHWR99 2XWSXW9ROWDJH5HIHUHQFHWR99 Short Circuit Current vs. Temperature (Sourcing) 6LQNLQJ 6RXUFLQJ 96 9 6KRUW&LUFXLW&XUUHQWP$ 6KRUW&LUFXLW&XUUHQWP$ 2XWSXW9ROWDJH5HIHUHQFHWR*1'9 ,6285&( P$ ,6285&( P$ 96 9 96 9 96 9 7HPSHUDWXUH& ©2009-2012 CADEKA Microcircuits, LLC 96 9 LMV321 General Purpose, Rail-to-Rail Output Amplifier 7HPSHUDWXUH& www.cadeka.com 7 Data Sheet Typical Performance Characteristics at +5V - Continued TA = 25°C, VS = +5V, Rf = Rg =10kΩ, RL = 10kΩ to VS/2, G = 2; unless otherwise noted. Output Voltage Swing vs. Supply Voltage Slew Rate vs. Supply Voltage 5/ Nё 3RVLWLYH6ZLQJ $9 5/ Nё sŝŶ сϭsƉƉ CMRR vs. Frequency PSRR vs. Signal Frequency Non-Inverting Non-Inverting Non-Inverting Small Small Small Signal Signal Pulse Pulse Pulse Response Response Response 96 9 96 9 3655G% 96 9 96 9 9LQ 96 5/ Nё 5/ Nё 6XSSO\9ROWDJH9 6XSSO\9ROWDJH9 &055G% 5LVLQJ(GJH 1HJDWLYH6ZLQJ )DOOLQJ(GJH 6OHZ5DWH9 6OHZ5DWH9ʅV Input Voltage Noise vs. Frequency Rev 1 )UHTXHQF\N+] )UHTXHQF\N+] THD vs. Frequency 7+' ,QSXW9ROWDJH1RLVHQ9¥+] 96 9 96 9$99287 933 96 9$99287 933 96 9 96 9$99287 933 96 9$99287 933 )UHTXHQF\N+] ©2009-2012 CADEKA Microcircuits, LLC LMV321 General Purpose, Rail-to-Rail Output Amplifier 2XWSXW9ROWDJHIURP6XSSO\9ROWDJHP9 )UHTXHQF\N+] www.cadeka.com 8 Data Sheet Typical Performance Characteristics at +5V - Continued TA = 25°C, VS = +5V, Rf = Rg =10kΩ, RL = 10kΩ to VS/2, G = 2; unless otherwise noted. Open Loop Output Impedance vs. Frequency Open Loop Frequency Response +2.7V 3+$6( 96 9 96 9 5/ Nё 5/ Nё 5/ ё *$,1 96 9 )UHTXHQF\N+] OpenNon-Inverting Loop Frequency Response vs. Temperature Non-Inverting Non-Inverting Small Small Small Signal Signal Signal Pulse Pulse Pulse Response Response Response 5/ ё *$,1 9 & & 9 9V6 9 9 Nё 5 5/ .ё / Gain and Phase vs. Capacitive Load RL=600Ω Gain and Phase vs. Capacitive Load RL=100kΩ 3+$6( &/ S) &/ *$,1 S) &/ S) &/ S) 96 9 5/ ё )UHTXHQF\0+] ©2009-2012 CADEKA Microcircuits, LLC *$,1 &/ 3+$6( *DLQG% 3KDVH0DUJLQ'HJ Rev 1 )UHTXHQF\0+] )UHTXHQF\0+] *DLQG% & *$,1 96 3KDVH0DUJLQ'HJ Nё *DLQG% 5/ 3KDVH0DUJLQ'HJ *DLQG% Nё 3+$6( 3+$6( 5/ )UHTXHQF\0+] Open Loop Frequency Response 5V &/ &/ S) S) &/ S) S) 3KDVH0DUJLQ'HJ 3KDVH0DUJLQ'HJ *DLQG% 2XWSXW,PSHGDQFH 2XWSXW,PSHGDQFHёͿ 96 9 5/ Nё LMV321 General Purpose, Rail-to-Rail Output Amplifier )UHTXHQF\0+] www.cadeka.com 9 Data Sheet Typical Performance Characteristics at +5V - Continued TA = 25°C, VS = +5V, Rf = Rg =10kΩ, RL = 10kΩ to VS/2, G = 2; unless otherwise noted. Inverting Large Signal Pulse Response Inverting Large Signal Pulse Response ,QSXW6LJQDO LMV321 General Purpose, Rail-to-Rail Output Amplifier 96 9 5/ Nё $9B& 96 9 5/ Nё $9B& 9GLY 9GLY ,QSXW6LJQDO 2XWSXW6LJQDO 2XWSXW6LJQDO 7LPHʅƐͬĚŝǀͿ 7LPHʅƐͬĚŝǀͿ Inverting Large Signal Pulse Response Inverting Small Signal Pulse Response Non-Inverting Non-Inverting Non-Inverting Small Small Small Signal Signal Signal Pulse Pulse Pulse Response Response Response 96 9 5/ Nё $9B& 96 9 5/ Nё $9B& ,QSXW6LJQDO 9GLY P9GLY ,QSXW6LJQDO 2XWSXW6LJQDO 2XWSXW6LJQDO 7LPHʅƐͬĚŝǀͿ Inverting Small Signal Pulse Response Inverting Small Signal Pulse Response Rev 1 7LPHʅƐͬĚŝǀͿ 96 9 5/ Nё $9B& 96 9 5/ Nё $9B& ,QSXW6LJQDO P9GLY P9GLY ,QSXW6LJQDO 2XWSXW6LJQDO 7LPHʅƐͬĚŝǀͿ ©2009-2012 CADEKA Microcircuits, LLC 2XWSXW6LJQDO 7LPHʅƐͬĚŝǀͿ www.cadeka.com 10 Data Sheet Typical Performance Characteristics at +5V - Continued TA = 25°C, VS = +5V, Rf = Rg =10kΩ, RL = 10kΩ to VS/2, G = 2; unless otherwise noted. Non-Inverting Large Signal Pulse Response 96 9 5/ Nё $9B& 96 9 5/ Nё $9B& LMV321 General Purpose, Rail-to-Rail Output Amplifier Non-Inverting Large Signal Pulse Response ,QSXW6LJQDO 9GLY 9GLY ,QSXW6LJQDO 2XWSXW6LJQDO 2XWSXW6LJQDO 7LPHʅƐͬĚŝǀͿ 7LPHʅƐͬĚŝǀͿ Non-Inverting Large Signal Pulse Response Non-Inverting Non-Inverting Non-Inverting Small Small Small Signal Signal Signal Pulse Pulse Pulse Response Response Response 96 9 5/ Nё $9B& 96 9 5/ Nё $9B& ,QSXW6LJQDO 9GLY P9GLY ,QSXW6LJQDO 2XWSXW6LJQDO 2XWSXW6LJQDO 7LPHʅƐͬĚŝǀͿ Non-Inverting Small Signal Pulse Response Non-Inverting Small Signal Pulse Response Rev 1 7LPHʅƐͬĚŝǀͿ 96 9 5/ Nё $9B& 9V 9 5/ Nё $9B& ,QSXW6LJQDO P9GLY P9GLY ,QSXW6LJQDO 2XWSXW6LJQDO 7LPHʅƐͬĚŝǀͿ ©2009-2012 CADEKA Microcircuits, LLC 2XWSXW6LJQDO 7LPHʅƐͬĚŝǀͿ www.cadeka.com 11 Data Sheet Application Information +Vs 6.8µF General Description Input Output RL 0.1µF The common mode input range extends to 200mV below ground and to 800mV below Vs. Exceeding these values will not cause phase reversal. However, if the input voltage exceeds the rails by more than 0.5V, the input ESD devices will begin to conduct. The output will stay at the rail during this overdrive condition. The output stage is short circuit protected and offers “soft” saturation protection that improves recovery time.Figures 1, 2, and 3 illustrate typical circuit configurations for noninverting, inverting, and unity gain topologies for dual supply applications. They show the recommended bypass capacitor values and overall closed loop gain equations. Figure 4 shows the typical non-inverting gain circuit for single supply applications 6.8µF Input Figure 3. Unity Gain Circuit +Vs 6.8µF Input + 0.1µF Output RL Rf Rg 0.1µF + G=1 -Vs +Vs 6.8µF 0.1µF + LMV321 General Purpose, Rail-to-Rail Output Amplifier The LMV321 is a single supply, general purpose, voltagefeedback amplifier fabricated on a CMOS process. The LMV321 offers 1MHz gain bandwidth product, >1V/μs slew rate, and only 130μA supply current. It features a rail-to-rail output stage and is unity gain stable. Figure 4. Single Supply Non-Inverting Gain Circuit Output RL Rg 6.8µF -Vs Power Dissipation Rf G = 1 + (Rf/Rg) Figure 1. Typical Non-Inverting Gain Circuit +Vs 6.8µF R1 Input Rg 0.1µF + Output RL 0.1µF 6.8µF -Vs Rf G = - (Rf/Rg) For optimum input offset voltage set R1 = Rf || Rg Figure 2. Typical Inverting Gain Circuit ©2009-2012 CADEKA Microcircuits, LLC Power dissipation should not be a factor when operating under the stated 2kΩ load condition. However, applications with low impedance, DC coupled loads should be analyzed to ensure that maximum allowed junction temperature is not exceeded. Guidelines listed below can be used to verify that the particular application will not cause the device to operate beyond it’s intended operating range. Maximum power levels are set by the absolute maximum junction rating of 150°C. To calculate the junction temperature, the package thermal resistance value ThetaJA (ӨJA) is used along with the total die power dissipation. TJunction = TAmbient + (ӨJA × PD) Where TAmbient is the temperature of the working environment. In order to determine PD, the power dissipated in the load needs to be subtracted from the total power delivered by www.cadeka.com 12 Rev 1 0.1µF Data Sheet the supplies. PD = Psupply - Pload Supply power is calculated by the standard power equation. Psupply = Vsupply × IRMS supply Vsupply = VS+ - VSFigure 5. Addition of RS for Driving Capacitive Loads Power delivered to a purely resistive load is: Pload = ((VLOAD)RMS2)/Rloadeff The effective load resistor (Rloadeff) will need to include the effect of the feedback network. For instance, For a given load capacitance, adjust RS to optimize the tradeoff between settling time and bandwidth. In general, reducing RS will increase bandwidth at the expense of additional overshoot and ringing. Rloadeff in Figure 3 would be calculated as: RL || (Rf + Rg) These measurements are basic and are relatively easy to perform with standard lab equipment. For design purposes however, prior knowledge of actual signal levels and load impedance is needed to determine the dissipated power. Here, PD can be found from PD = PQuiescent + PDynamic - PLoad Quiescent power can be derived from the specified IS values along with known supply voltage, VSupply. Load power can be calculated as above with the desired signal amplitudes using: Overdrive Recovery An overdrive condition is defined as the point when either one of the inputs or the output exceed their specified voltage range. Overdrive recovery is the time needed for the amplifier to return to its normal or linear operating point. The recovery time varies, based on whether the input or output is overdriven and by how much the range is exceeded. The LMV321 and will typically recover in less than 5us from an overdrive condition. Figure 6 shows the LMV321 in an overdriven condition. 96 9 5/ Nё $9B& (VLOAD)RMS = VPEAK / √2 ,QSXW6LJQDO Rev 1 The dynamic power is focused primarily within the output stage driving the load. This value can be calculated as: $PSOLWXGH9 ( ILOAD)RMS = ( VLOAD)RMS / Rloadeff 2XWSXW6LJQDO PDYNAMIC = (VS+ - VLOAD)RMS × ( ILOAD)RMS Assuming the load is referenced in the middle of the power rails or Vsupply/2. The LMV321 is short circuit protected. However, this may not guarantee that the maximum junction temperature (+150°C) is not exceeded under all conditions. 7LPHʅƐͿ Figure 6. Overdrive Recovery Layout Considerations Driving Capacitive Loads Increased phase delay at the output due to capacitive loading can cause ringing, peaking in the frequency response, and possible unstable behavior. Use a series resistance, RS, between the amplifier and the load to help improve stability and settling performance. Refer to Figure 5. ©2009-2012 CADEKA Microcircuits, LLC LMV321 General Purpose, Rail-to-Rail Output Amplifier General layout and supply bypassing play major roles in high frequency performance. CADEKA has evaluation boards to use as a guide for high frequency layout and as an aid in device testing and characterization. Follow the steps below as a basis for high frequency layout: ▪ Include 6.8µF and 0.1µF ceramic capacitors for power www.cadeka.com 13 Data Sheet supply decoupling ▪ Place the 6.8µF capacitor within 0.75 inches of the power pin LMV321 General Purpose, Rail-to-Rail Output Amplifier ▪ Place the 0.1µF capacitor within 0.1 inches of the power pin ▪ Remove the ground plane under and around the part, especially near the input and output pins to reduce parasitic capacitance ▪ Minimize all trace lengths to reduce series inductances Evaluation Board Schematics Evaluation board schematics and layouts are shown in Figures 7-9. These evaluation boards are built for dual supply operation. Follow these steps to use the board in a single-supply application: Figure 8. CEB004 Top View 1. Short -Vs to ground. 2. Use C3 (6.8uF) and C4 (0.1uF), if the -VS pin of the amplifier is not directly connected to the ground plane. +Vs 6.8µF Input Rin 5 1 + 0.1µF Output 4 2 Rg Rout Rev 1 3 - RL 0.1µF Rf 6.8µF Figure 9. CEB004 Bottom View -Vs Figure 7. CEB004 Schematic ©2009-2012 CADEKA Microcircuits, LLC www.cadeka.com 14 Data Sheet Mechanical Dimensions TSOT-5 Package 1. ALL DIMENSIONS ARE IN MILLIMETERS. 2. PACKAGE LENGTH DOES NOT INCLUDE INTERLEAD FALSH OR PROTRUSION 3. PACKAGE WIDTH DOES NOTINCLUDE INTERLEAD FALSH OR PROTRUSION. 4. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.10 MILLIMETERS MAX. 5. DRAWING CONFROMS TO JEDEC MO-193, VARIATION AA. 6. DRAWING IS NOT TO SCALE. LMV321 General Purpose, Rail-to-Rail Output Amplifier NOTE: Rev 1 For additional information regarding our products, please visit CADEKA at: cadeka.com CADEKA Headquarters Loveland, Colorado T: 970.663.5452 T: 877.663.5452 (toll free) CADEKA, the CADEKA logo design, COMLINEAR, and the COMLINEAR logo design are trademarks or registered trademarks of CADEKA Microcircuits LLC. All other brand and product names may be trademarks of their respective companies. CADEKA reserves the right to make changes to any products and services herein at any time without notice. CADEKA does not assume any responsibility or liability arising out of the application or use of any product or service described herein, except as expressly agreed to in writing by CADEKA; nor does the purchase, lease, or use of a product or service from CADEKA convey a license under any patent rights, copyrights, trademark rights, or any other of the intellectual property rights of CADEKA or of third parties. Copyright ©2009-2012 CADEKA Microcircuits, LLC. All rights reserved.