September 2005 LMP7711 Precision, 17 MHz, Low Noise, CMOS Input Amplifier General Description Features The LMP7711 is a low noise, low offset, CMOS input, railto-rail output precision amplifier with a high gain bandwidth and an enable pin. The LMP7711 is part of the LMP™ precision amplifier family and is ideal for a variety of instrumentation applications. Unless otherwise noted, typical values at VS = 5V. ± 150 µV (max) n Input offset voltage n Input bias current 100 fA n Input voltage noise 5.8 nV/ n Unity gain bandwidth 17 MHz n Supply current 1.15 mA n Supply voltage range 1.8V to 5.5V n Total harmonic distortion 0.001% @1 kHz, 600Ω n Operating temperature range −40oC to 125˚C n Rail-to-rail output swing n Space saving TSOT23 package Utilizing a CMOS input stage, the LMP7711 achieves an input bias current of 100 fA, input referred voltage noise of , and an input offset voltage of less than 5.8 nV/ ± 150 µV. These features make the LMP7711 a superior choice for precision applications. Consuming only 1.15 mA of supply current, the LMP7711 offers a high gain bandwidth of 17 MHz, enabling accurate amplification at high closed loop gains. The LMP7711 has a supply voltage range of 1.8V to 5.5V; which makes this an ideal choice for portable low power applications with low supply voltage requirements. In order to reduce the already low power consumption of the LMP7711, an enable function is available. Once in shutdown, the LMP7711 draws only 140 nA of supply current. The LMP7711 is built with National’s advanced VIP50 process technology. The LMP7711 is available in a 6-pin TSOT23 package. Applications n Active filters and buffers n Sensor interface applications n Transimpedance amplifiers Typical Performance Offset Voltage Distribution Input Referred Voltage Noise 20150322 20150339 LMP™ is a trademark of National Semiconductor Corporation. © 2005 National Semiconductor Corporation DS201503 www.national.com LMP7711 Precision, 17 MHz, Low Noise, CMOS Input Amplifier PRELIMINARY LMP7711 Absolute Maximum Ratings (Note 1) Soldering Information If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Infrared or Convection (20 sec) 235˚C Wave Soldering Lead Temp. (10 sec) 260˚C ESD Tolerance (Note 2) Human Body 2000V Machine Model Operating Ratings (Note 1) 200V VIN Differential 0.3V Supply Voltage (VS = V+ – V−) 6.0V Voltage on Input/Ouput Pins V+ +0.3V, V− −0.3V Storage Temperature Range −65˚C to 150˚C Junction Temperature (Note 3) Temperature Range (Note 3) + −40˚C to 125˚C − Supply Voltage (VS = V – V ) 0˚C ≤ TA ≤125˚C 1.8V to 5.5V –40˚C ≤ TA ≤125˚C 2V to 5.5V Package Thermal Resistance (θJA (Note 3)) +150˚C 6-Pin TSOT23 170˚C/W 2.5V Electrical Characteristics Unless otherwise specified, all limits are guaranteed for TA = 25˚C, V+ = 2.5V, V− = 0V, VCM = V+/2, VEN = V+. Boldface limits apply at the temperature extremes. Symbol Parameter Conditions VOS Input Offset Voltage TC VOS Input Offset Voltage Drift (Note 6) IB Input Bias Current (Notes 7, 8) VCM = 1V Min (Note 5) Typ (Note 4) Max (Note 5) ± 20 ± 180 ± 580 ±4 ±1 pA 6 100 fA Input Offset Current (Note 8) Common Mode Rejection Ratio 0V ≤ VCM ≤ 1.4V 83 80 97 PSRR Power Supply Rejection Ratio 2V ≤ V+ ≤ 5.5V, V− = 0V, VCM = 0 85 80 100 1.8V ≤ V+ ≤ 5.5V, V− = 0V, VCM = 0 85 98 Input Common-Mode Voltage Range CMRR ≥ 80 dB CMRR ≥ 78 dB AVOL Large Signal Voltage Gain VO = 0.15 to 2.2V, RL = 2 kΩ to V+/2 88 82 98 VO = 0.15 to 2.2V, RL = 10 kΩ to V+/2 92 88 110 RL = 2 kΩ to V+/2 70 77 25 RL = 10 kΩ to V+/2 60 66 20 IO IS Output Short Circuit Current Supply Current www.national.com dB dB CMVR Output Swing Low µV/˚C 0.5 50 IOS Output Swing High µV 0.05 CMRR VO Units −0.3 -0.3 1.5 1.5 dB mV from V+ RL = 2 kΩ to V+/2 30 70 73 RL = 10 kΩ to V+/2 15 60 62 Sourcing to V− VIN = 200 mV (Note 9) 36 30 47 Sinking to V+ VIN = –200 mV (Note 9) 7.5 5.0 15 V mV mA Enable Mode VEN > 2.1 0.95 1.3 1.6 mA Shutdown Mode VEN < 0.4 0.03 1 4 µA 2 (Continued) Unless otherwise specified, all limits are guaranteed for TA = 25˚C, V+ = 2.5V, V− = 0V, VCM = V+/2, VEN = V+. Boldface limits apply at the temperature extremes. Symbol SR Parameter Slew Rate Conditions Min (Note 5) Gain Bandwidth Product en Input-Referred Voltage Noise in Input-Referred Current Noise Max (Note 5) AV = +1, Rising (10% to 90%) AV = +1, Falling (90% to 10%) GBW Typ (Note 4) V/µs 10.5 14 f = 400 Hz MHz 7 f = 1 kHz 6.2 f = 1 kHz 0.01 Units nV/ pA/ ton Turn-on Time 140 ns toff Turn-off Time 1000 ns VEN Shutdown Pin Voltage Range Enable Mode Shutdown Mode IEN THD Shutdown Pin Input Current Total Harmonic Distortion 2.1 to 2.5 2 to 2.5 0 to 0.4 0 to 0.5 V VEN > 2.1V (Note 7) 1.5 3.0 VEN < 0.4V (Note 7) 0.003 0.1 f = 1 kHz, AV = 1, RL = 600Ω 0.01 µA % 5V Electrical Characteristics Unless otherwise specified, all limits are guaranteed for TA = 25˚C, V+ = 5V, V− = 0V, VCM = V+/2, VEN = V+. Boldface limits apply at the temperature extremes. Symbol Parameter VOS Input Offset Voltage Conditions Min (Note 5) Typ (Note 4) Max (Note 5) ± 10 ± 150 ± 550 ±4 Units µV TC VOS Input Offset Average Drift (Note 6) ±1 IB Input Bias Current (Notes 7, 8) VCM = 2V 0.1 1 100 pA IOS Input Offset Current (Note 8) 11 150 fA CMRR Common Mode Rejection Ratio 0V ≤ VCM ≤ 3.7V 85 82 100 PSRR Power Supply Rejection Ratio 2V ≤ V+ ≤ 5.5V, V− = 0V, VCM = 0 85 80 100 1.8V ≤ V+ ≤ 5.5V, V− = 0V, VCM = 0 85 98 Input Common-Mode Voltage Range CMRR ≥ 80 dB CMRR ≥ 78 dB AVOL Large Signal Voltage Gain VO = 0.3 to 4.7V, RL = 2 kΩ to V+/2 88 82 107 VO = 0.3 to 4.7V, RL = 10 kΩ to V+/2 92 88 110 RL = 2 kΩ to V+/2 70 77 35 60 66 25 Output Swing High −0.3 -0.3 + RL = 10 kΩ to V /2 Output Swing Low IO Output Short Circuit Current dB dB CMVR VO 4 4 mV from V+ 50 70 73 RL = 10 kΩ to V+/2 20 60 62 Sinking to V+ VIN = –200 mV (Note 9) 3 46 38 60 10.5 6.5 20 V dB RL = 2 kΩ to V+/2 Sourcing to V− VIN = 200 mV (Note 9) µV/˚C mV mA www.national.com LMP7711 2.5V Electrical Characteristics LMP7711 5V Electrical Characteristics IS Supply Current SR Slew Rate GBW Gain Bandwidth Product en Input-Referred Voltage Noise in Input-Referred Current Noise ton Turn-on Time toff Turn-off Time VEN Enable Pin Voltage Range (Continued) Enable Mode VEN > 4.6 1.15 1.40 1.75 mA Shutdown Mode VEN < 0.4 0.14 1 4 µA AV = +1, Rising (10% to 90%) 6.0 9.5 AV = +1, Falling (90% to 10%) 7.5 11.5 17 f = 400 Hz 6.8 f = 1 kHz 5.8 f = 1 kHz 0.01 nV/ pA/ ns Enable Pin Input Current THD MHz ns Enable Mode 4.6 to 5.0 4.5 to 5.0 Shutdown Mode IEN V/µs Total Harmonic Distortion 0 to 0.4 V 0 to 0.5 VEN > 4.6V (Note 7) 5.6 10 VEN < 0.4V (Note 7) 0.005 0.2 f = 1 kHz, AV = 1, RL = 600Ω 0.01 µA % 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 Tables. Note 2: Human Body Model: 1.5 kΩ in series with 100 pF. Machine Model: 0Ω in series with 200 pF. Note 3: 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 4: Typical values represent the most likely parametric norm at the time of characterization. Note 5: Limits are 100% production tested at 25˚C. Limits over the operating temperature range are guaranteed through correlations using the Statistical Quality Control (SQC) method. Note 6: Offset voltage average drift is determined by dividing the change in VOS at the temperature extremes by the total temperature change. Note 7: Positive current corresponds to current flowing into the device. Note 8: Guaranteed by design. Note 9: The short circuit test is a momentary test. Connection Diagram 6-Pin TSOT23 20150301 Top View Ordering Information Package 6-Pin TSOT23 www.national.com Part Number LMP7711MK LMP7711MKX Package Marking Transport Media 1k Units Tape and Reel AC3A 3k Units Tape and Reel 4 NSC Drawing MK06A inches (millimeters) unless otherwise noted 6-Pin TSOT23 NS Package Number MK06A National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications. For the most current product information visit us at www.national.com. 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