LMV601/LMV602/LMV604 1 MHz, Low Power General Purpose, 2.7V Operational Amplifiers General Description Features The LMV601/LMV602/LMV604 are single, dual, and quad low voltage, low power Operational Amplifiers. They are designed specifically for low voltage general purpose applications. Other important product characteristics are low input bias current, rail-to-rail output, and wide temperature range. The LMV601/ LMV602/LMV604 have 29nV Voltage Noise at 10KHz, 1MHz GBW, 1.0V/μs Slew Rate, 0.25mV Vos. The LMV601/2/4 operates from a single supply voltage as low as 2.7V, while drawing 100uA (typ) quiescent current. In shutdown mode the current can be reduced to 45pA. The industrial-plus temperature range of −40°C to 125°C allows the LMV601/LMV602/LMV604 to accommodate a broad range of extended environment applications. The LMV601 offers a shutdown pin that can be used to disable the device. Once in shutdown mode, the supply current is reduced to 45pA (typical). The LMV601 is offered in the tiny 6-Pin SC70 package, the LMV602 in space saving 8-Pin MSOP and SOIC, and the LMV604 in 14-Pin TSSOP and SOIC. These small package amplifiers offer an ideal solution for applications requiring minimum PCB footprint. Applications with area constrained PC board requirements include portable and battery operated electronics. (Typical 2.7V supply values; unless otherwise noted) ■ Guaranteed 2.7V and 5V specifications 100μA ■ Supply current (per amplifier) 1.0MHz ■ Gain bandwidth product 45pA ■ Shutdown Current (LMV601) 5μs ■ Turn-on time from shutdown (LMV601) 20fA ■ Input bias current Applications ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ Cordless/cellular phones Laptops PDAs PCMCIA/Audio Portable/battery-powered electronic equipment Supply current monitoring Battery monitoring Buffer Filter Driver Sample and Hold Circuit 30185544 © 2012 Texas Instruments Incorporated 301855 SNOSC70A www.ti.com LMV601/LMV602/LMV604 1 MHz, Low Power General Purpose, 2.7V Operational Amplifiers May 31, 2012 LMV601/LMV602/LMV604 Infrared or Convection Reflow (20 sec.) Wave Soldering Lead Temp. (10 sec.) Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and specifications. ESD Tolerance (Note 2) Machine Model Human Body Model Differential Input Voltage Supply Voltage (V + -V −) Output Short Circuit to V + Output Short Circuit to V − Storage Temperature Range Junction Temperature (Note 5) Mounting Temperature Operating Ratings 200V 2000V ± Supply Voltage 6.0V (Note 3) (Note 4) −65°C to 150°C 150°C 2.7V DC Electrical Characteristics 235°C 260°C (Note 1) Supply Voltage Temperature Range 2.7V to 5.5V −40°C to 125°C Thermal Resistance (θ JA) 6-Pin SC70 8-Pin SOIC 8-Pin MSOP 14-Pin TSSOP 14-Pin SOIC 414°C/W 190°C/W 235°C/W 155°C/W 145°C/W (Note 10) Unless otherwise specified, all limits guaranteed for TJ = 25°C, V+ = 2.7V, V− = 0V, VCM = V+/2, VO = V+/2 and RL > 1MΩ. Boldface limits apply at the temperature extremes. Symbol VOS Parameter Input Offset Voltage Conditions Min (Note 7) Typ (Note 6) Max (Note 7) LMV601 0.25 4 LMV602/LMV604 0.55 5 Units mV TCVOS Input Offset Voltage Average Drift 1.7 µV/°C IB Input Bias Current 0.02 pA IOS Input Offset Current 6.6 fA IS Supply Current Per Amplifier Shutdown Mode, VSD = 0V (LMV601) 100 170 45pA 1μA μA 0V ≤ VCM ≤ 1.7V 80 dB Power Supply Rejection Ratio 2.7V ≤ V+ ≤ 5V 82 dB VCM Input Common Mode Voltage For CMRR ≥ 50dB AV Large Signal Voltage Gain RL = 10kΩ to 1.35V VO Output Swing RL = 10kΩ to 1.35V CMRR Common Mode Rejection Ratio PSRR 0V ≤ VCM ≤ 1.6V 0 Output Short Circuit Current 5.0 Sourcing LMV601/LMV602 32 Sourcing LMV604 24 Sinking 24 Turn-on Time from Shutdown (LMV601) 5 VSD Shutdown Pin Voltage Range ON Mode (LMV601) Shutdown Mode (LMV601) 2 V dB 30 5.3 ton www.ti.com 1.7 113 30 IO −0.2 to 1.9 (Range) mV mA μs 1.7 to 2.7 2.4 to 2.7 0 to 1 0 to 0.8 V (Note 10) Unless otherwise specified, all limits guaranteed for TJ = 25°C, V+ = 2.7V, V− = 0V, VCM = V+/2, VO = V+/2 and RL > 1MΩ. Boldface limits apply at the temperature extremes. Symbol Parameter Conditions Min (Note 7) Typ (Note 6) Max (Note 7) Units SR Slew Rate RL = 10kΩ, (Note 9) 1.0 V/μs GBW Gain Bandwidth Product RL = 100kΩ, CL = 200pF 1.0 MHz Φm Phase Margin RL = 100kΩ 72 deg Gm Gain Margin RL = 100kΩ 20 dB en Input-Referred Voltage Noise f = 1kHz 40 nV/ in Input-Referred Current Noise f = 1kHz 0.001 pA/ THD Total Harmonic Distortion f = 1kHz, AV = +1 0.017 % RL = 600Ω, VIN = 1VPP 5V DC Electrical Characteristics (Note 10) Unless otherwise specified, all limits guaranteed for TJ = 25°C, V+ = 5V, V− = 0V, VCM = V+/2, VO = V+/2 and R L > 1MΩ. Boldface limits apply at the temperature extremes. Symbol VOS Parameter Input Offset Voltage Conditions Min (Note 7) Typ (Note 6) Max (Note 7) LMV601 0.25 4 LMV602/LMV604 0.70 5 Units mV TCVOS Input Offset Voltage Average Drift 1.9 µV/°C IB Input Bias Current 0.02 pA IOS Input Offset Current 6.6 fA IS Supply Current Per Amplifier Shutdown Mode, VSD = 0V (LMV601) CMRR Common Mode Rejection Ratio 107 200 μA 0.033 1 μA 0V ≤ VCM ≤ 4.0V 86 dB 82 dB 0V ≤ VCM ≤ 3.9V PSRR Power Supply Rejection Ratio 2.7V ≤ V+ ≤ 5V VCM Input Common Mode Voltage For CMRR ≥ 50dB AV Large Signal Voltage Gain (Note RL = 10kΩ to 2.5V 8) VO Output Swing 0 Output Short Circuit Current 7 RL = 10kΩ to 2.5V 113 Sinking 75 5 ton Turn-on Time from Shutdown (LMV601) VSD Shutdown Pin Voltage Range ON Mode (LMV601) Shutdown Mode (LMV601) V dB 30 7 Sourcing 5V AC Electrical Characteristics 4 116 30 IO −0.2 to 4.2 (Range) mV mA µs 3.1 to 5 4.5 to 5.0 0 to 1 0 to 0.8 V (Note 10) Unless otherwise specified, all limits guaranteed for TJ = 25°C, V+ = 5V, V− = 0V, VCM = V+/2, VO = V+/2 and R L > 1MΩ. Boldface limits apply at the temperature extremes. Symbol Parameter Conditions Min (Note 7) Typ (Note 6) Max (Note 7) Units SR Slew Rate RL = 10kΩ, (Note 9) 1.0 V/µs GBW Gain-Bandwidth Product RL = 10kΩ, CL = 200pF 1.0 MHz 3 www.ti.com LMV601/LMV602/LMV604 2.7V AC Electrical Characteristics LMV601/LMV602/LMV604 Symbol Parameter Conditions Min (Note 7) Typ (Note 6) Max (Note 7) Units Φm Phase Margin RL = 100kΩ 70 deg Gm Gain Margin RL = 100kΩ 20 dB en Input-Referred Voltage Noise f = 1kHz 39 nV/ in Input-Referred Current Noise f = 1kHz 0.001 pA/ THD Total Harmonic Distortion f = 1kHz, AV = +1 0.012 % RL = 600Ω, VIN = 1VPP Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics. Note 2: Human Body Model, applicable std. MIL-STD-883, Method 3015.7. Machine Model, applicable std. JESD22-A115-A (ESD MM std. of JEDEC) Field-Induced Charge-Device Model, applicable std. JESD22-C101-C (ESD FICDM std. of JEDEC). Note 3: Shorting output to V+ will adversely affect reliability. Note 4: Shorting output to V- will adversely affect reliability. Note 5: The maximum power dissipation is a function of TJ(MAX), θJA. The maximum allowable power dissipation at any ambient temperature is PD = (TJ(MAX) – TA)/ θJA. All numbers apply for packages soldered directly onto a PC Board. Note 6: Typical values represent the most likely parametric norm as determined at the time of characterization. Actual typical values may vary over time and will also depend on the application and configuration. The typical values are not tested and are not guaranteed on shipped production material. Note 7: All limits are guaranteed by testing or statistical analysis. Note 8: RL is connected to mid-supply. The output voltage is GND + 0.2V ≤ VO ≤ V+ −0.2V Note 9: Connected as voltage follower with 2VPP step input. Number specified is the slower of the positive and negative slew rates. Note 10: Electrical Table values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very limited self-heating of the device such that TJ = TA. No guarantee of parametric performance is indicated in the electrical tables under conditions of internal self heating where TJ > TA. www.ti.com 4 LMV601/LMV602/LMV604 Connection Diagrams 6-Pin SC70 8-Pin MSOP/SOIC 30185541 Top View 14-Pin TSSOP/SOIC 30185552 30185551 Top View Top View Ordering Information Package 6-Pin SC70 8-Pin MSOP 8-Pin SOIC 14-Pin TSSOP 14-Pin SOIC Part Number LMV601MG LMV601MGX LMV602MM LMV602MMX LMV602MA LMV602MAX LMV604MT LMV604MTX LMV604MA LMV604MAX Package Marking Transport Media 1k Units Tape and Reel AUA 3k Units Tape and Reel AC9A LMV602MA LMV604MT LMV604MA 5 1k Units Tape and Reel 3.5k Units Tape and Reel 95 Units/Rail 2.5k Units Tape and Reel Rails 2.5k Units Tape and Reel 55 Units/Rail 2.5k Units Tape and Reel NSC Drawing MAA06A MUA08A M08A MTC14 M14A www.ti.com LMV601/LMV602/LMV604 Typical Performance Characteristics Supply Current vs. Supply Voltage (LMV601) Input Current vs. Temperature 30185528 30185546 Output Voltage Swing vs. Supply Voltage Output Voltage Swing vs. Supply Voltage 30185526 30185527 ISOURCE vs. VOUT ISOURCE vs. VOUT 30185529 www.ti.com 30185530 6 LMV601/LMV602/LMV604 ISINK vs. VOUT ISINK vs. VOUT 30185532 30185531 VOS vs. VCM VOS vs. VCM 30185533 30185534 VIN vs. VOUT VIN vs. VOUT 30185535 30185536 7 www.ti.com LMV601/LMV602/LMV604 CMRR vs. Frequency PSRR vs. Frequency 30185501 30185503 Input Voltage Noise vs. frequency Slew Rate vs. VSUPPLY 30185504 30185502 Slew Rate vs. Temperature Slew Rate vs. Temperature 30185522 www.ti.com 30185523 8 LMV601/LMV602/LMV604 THD+N vs. Frequency THD+N vs. VOUT 30185525 30185524 Open Loop Frequency Over Temperature Open Loop Frequency Response 30185521 30185520 Open Loop Frequency Response Gain and Phase vs. CL 30185519 30185517 9 www.ti.com LMV601/LMV602/LMV604 Gain and Phase vs. CL Stability vs. Capacitive Load 30185548 30185518 Stability vs. Capacitive Load Non-Inverting Small Signal Pulse Response 30185505 30185549 www.ti.com Non-Inverting Large Signal Pulse Response Non-Inverting Small Signal Pulse Response 30185508 30185506 10 Non-Inverting Small Signal Pulse Response 30185509 30185507 Non-Inverting Large Signal Pulse Response LMV601/LMV602/LMV604 Non-Inverting Large Signal Pulse Response Inverting Small Signal Pulse Response 30185510 30185511 Inverting Large Signal Pulse Response Inverting Small Signal Pulse Response 30185514 30185512 11 www.ti.com LMV601/LMV602/LMV604 Inverting Large Signal Pulse Response Inverting Small Signal Pulse Response 30185515 30185513 Inverting Large Signal Pulse Response Crosstalk Rejection vs. Frequency 30185516 30185554 www.ti.com 12 LMV601/LMV602/LMV604 The LMV601/LMV602/LMV604 family of amplifiers features low voltage, low power, and rail-to-rail output operational amplifiers designed for low voltage portable applications. The family is designed using all CMOS technology. This results in an ultra low input bias current. The LMV601 has a shutdown option, which can be used in portable devices to increase battery life. A simplified schematic of the LMV601/LMV602/LMV604 family of amplifiers is shown in Figure 1. The PMOS input differential pair allows the input to include ground. The output of this differential pair is connected to the Class AB turnaround stage. This Class AB turnaround has a lower quiescent current, compared to regular turnaround stages. This results in lower offset, noise, and power dissipation, while slew rate equals that of a conventional turnaround stage. The output of the Class AB turnaround stage provides gate voltage to the complementary common-source transistors at the output stage. These transistors enable the device to have rail-to-rail output. SAMPLE AND HOLD CIRCUIT The lower input bias current of the LMV601 results in a very high input impedance. The output impedance when the device is in shutdown mode is quite high. These high impedances, along with the ability of the shutdown pin to be derived from a separate power source, make LMV601 a good choice for sample and hold circuits. The sample clock should be connected to the shutdown pin of the amplifier to rapidly turn the device on or off. Figure 2 shows the schematic of a simple sample and hold circuit. When the sample clock is high the first amplifier is in normal operation mode and the second amplifier acts as a buffer. The capacitor, which appears as a load on the first amplifier, will be charging at this time. The voltage across the capacitor is that of the non-inverting input of the first amplifier since it is connected as a voltage-follower. When the sample clock is low the first amplifier is shut off, bringing the output impedance to a high value. The high impedance of this output, along with the very high impedance on the input of the second amplifier, prevents the capacitor from discharging. There is very little voltage droop while the first amplifier is in shutdown mode. The second amplifier, which is still in normal operation mode and is connected as a voltage follower, also provides the voltage sampled on the capacitor at its output. 30185553 FIGURE 1. Simplified Schematic 30185544 FIGURE 2. Sample and Hold Circuit CLASS AB TURNAROUND STAGE AMPLIFIER This patented folded cascode stage has a combined class AB amplifier stage, which replaces the conventional folded cascode stage. Therefore, the class AB folded cascode stage runs at a much lower quiescent current compared to conventional folded cascode stages. This results in significantly smaller offset and noise contributions. The reduced offset and noise contributions in turn reduce the offset voltage level and the voltage noise level at the input of the LMV601/LMV602/ LMV604. Also the lower quiescent current results in a high open-loop gain for the amplifier. The lower quiescent current does not affect the slew rate of the amplifier nor its ability to handle the total current swing coming from the input stage. The input voltage noise of the device at low frequencies, below 1kHz, is slightly higher than devices with a BJT input stage; However the PMOS input stage results in a much lower input bias current and the input voltage noise drops at frequencies above 1kHz. SHUTDOWN FEATURE The LMV601 is capable of being turned off in order to conserve power and increase battery life in portable devices. Once in shutdown mode the supply current is drastically reduced, 1µA maximum, and the output will be "tri-stated." The device will be disabled when the shutdown pin voltage is pulled low. The shutdown pin should never be left unconnected. Leaving the pin floating will result in an undefined operation mode and the device may oscillate between shutdown and active modes. The LMV601 typically turns on 2.8µs after the shutdown voltage is pulled high. The device turns off in less than 400ns after shutdown voltage is pulled low. Figure 3 and Figure 4 show the turn-on and turn-off time of the LMV601, respectively. In order to reduce the effect of the capacitance added to the circuit by the scope probe, in the turn-off time circuit a resistive load of 600Ω is added. Figure 5 and Figure 6 show the test circuits used to obtain the two plots. 13 www.ti.com LMV601/LMV602/LMV604 Application Section LMV601/LMV602/LMV604 30185543 FIGURE 6. Turn-off Time LOW INPUT BIAS CURRENT The LMV601/LMV602/LMV604 Amplifiers have a PMOS input stage. As a result, they will have a much lower input bias current than devices with BJT input stages. This feature makes these devices ideal for sensor circuits. A typical curve of the input bias current of the LMV601 is shown in Figure 7. 30185540 FIGURE 3. Turn-on Time 30185539 FIGURE 4. Turn-off Time 30185547 FIGURE 7. Input Bias Current vs. VCM 30185542 FIGURE 5. Turn-on Time www.ti.com 14 LMV601/LMV602/LMV604 Physical Dimensions inches (millimeters) unless otherwise noted 6-Pin SC70 NS Package Number MAA06A 8-Pin MSOP NS Package Number MUA08A 15 www.ti.com LMV601/LMV602/LMV604 8-Pin SOIC NS Package Number M08A 14-Pin TSSOP NS Package Number MTC14 www.ti.com 16 LMV601/LMV602/LMV604 14-Pin SOIC NS Package Number M14A 17 www.ti.com LMV601/LMV602/LMV604 1 MHz, Low Power General Purpose, 2.7V Operational Amplifiers Notes www.ti.com IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. 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