LMP7711

LMP7711 Precision, 17 MHz, Low Noise, CMOS Input Amplifier PRELIMINARY September 2005 LMP7711 Precision, 17 MHz, Low Noise, CMOS Input Amplifier General Description 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. 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. Features 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 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 Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. ESD Tolerance (Note 2) Human Body Machine Model VIN Differential Supply Voltage (VS = V+ – V−) Voltage on Input/Ouput Pins Storage Temperature Range Junction Temperature (Note 3) 2000V 200V 0.3V 6.0V V+ +0.3V, V− −0.3V −65˚C to 150˚C +150˚C Soldering Information Infrared or Convection (20 sec) Wave Soldering Lead Temp. (10 sec) 235˚C 260˚C Operating Ratings (Note 1) Temperature Range (Note 3) Supply Voltage (VS = V – V ) 0˚C ≤ TA ≤125˚C –40˚C ≤ TA ≤125˚C Package Thermal Resistance (θJA (Note 3)) 6-Pin TSOT23 170˚C/W 1.8V to 5.5V 2V to 5.5V + − −40˚C to 125˚C 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 VOS TC VOS IB IOS CMRR PSRR Parameter Input Offset Voltage Input Offset Voltage Drift Input Bias Current Input Offset Current Common Mode Rejection Ratio Power Supply Rejection Ratio (Note 6) (Notes 7, 8) VCM = 1V (Note 8) 0V ≤ VCM ≤ 1.4V 2V ≤ V+ ≤ 5.5V, V− = 0V, VCM = 0 1.8V ≤ V+ ≤ 5.5V, V− = 0V, VCM = 0 CMVR AVOL Input Common-Mode Voltage Range Large Signal Voltage Gain CMRR ≥ 80 dB CMRR ≥ 78 dB VO = 0.15 to 2.2V, RL = 2 kΩ to V+/2 VO = 0.15 to 2.2V, RL = 10 kΩ to V+/2 VO Output Swing High RL = 2 kΩ to V+/2 RL = 10 kΩ to V+/2 Output Swing Low RL = 2 kΩ to V+/2 RL = 10 kΩ to V+/2 IO Output Short Circuit Current Sourcing to V− VIN = 200 mV (Note 9) Sinking to V+ VIN = –200 mV (Note 9) IS Supply Current Enable Mode VEN > 2.1 Shutdown Mode VEN < 0.4 36 30 7.5 5.0 83 80 85 80 85 −0.3 -0.3 88 82 92 88 70 77 60 66 98 110 25 20 30 15 47 15 0.95 0.03 1.3 1.6 1 4 mA 70 73 60 62 mV from V+ dB Conditions Min (Note 5) Typ (Note 4) Max (Note 5) Units ± 20 ±1 0.05 6 97 100 ± 180 ± 580 ±4 0.5 50 100 µV µV/˚C pA fA dB dB 98 1.5 1.5 V mV mA µA www.national.com 2 LMP7711 2.5V Electrical Characteristics Symbol SR GBW en in ton toff VEN IEN THD Slew Rate Gain Bandwidth Product Input-Referred Voltage Noise Input-Referred Current Noise Turn-on Time Turn-off Time Shutdown Pin Voltage Range Shutdown Pin Input Current Total Harmonic Distortion Parameter (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. Conditions AV = +1, Rising (10% to 90%) AV = +1, Falling (90% to 10%) f = 400 Hz f = 1 kHz f = 1 kHz 10.5 14 7 6.2 0.01 140 1000 Enable Mode Shutdown Mode VEN > 2.1V (Note 7) VEN < 0.4V (Note 7) f = 1 kHz, AV = 1, RL = 600Ω 2.1 to 2.5 0 to 0.4 2 to 2.5 0 to 0.5 1.5 0.003 0.01 3.0 0.1 Min (Note 5) Typ (Note 4) Max (Note 5) Units V/µs MHz nV/ pA/ ns ns V 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 VOS TC VOS IB IOS CMRR PSRR Parameter Input Offset Voltage Input Offset Average Drift Input Bias Current Input Offset Current Common Mode Rejection Ratio Power Supply Rejection Ratio (Note 6) (Notes 7, 8) VCM = 2V (Note 8) 0V ≤ VCM ≤ 3.7V 2V ≤ V+ ≤ 5.5V, V− = 0V, VCM = 0 1.8V ≤ V+ ≤ 5.5V, V− = 0V, VCM = 0 CMVR AVOL Input Common-Mode Voltage Range Large Signal Voltage Gain CMRR ≥ 80 dB CMRR ≥ 78 dB VO = 0.3 to 4.7V, RL = 2 kΩ to V+/2 VO = 0.3 to 4.7V, RL = 10 kΩ to V+/2 VO Output Swing High RL = 2 kΩ to V+/2 RL = 10 kΩ to V /2 + Conditions Min (Note 5) Typ (Note 4) Max (Note 5) Units ± 10 ±1 0.1 11 85 82 85 80 85 −0.3 -0.3 88 82 92 88 70 77 60 66 107 110 35 25 50 20 46 38 10.5 6.5 60 20 100 100 ± 150 ± 550 ±4 1 100 150 µV µV/˚C pA fA dB dB 98 4 4 V dB mV from V+ 70 73 60 62 Output Swing Low RL = 2 kΩ to V+/2 RL = 10 kΩ to V+/2 mV IO Output Short Circuit Current Sourcing to V− VIN = 200 mV (Note 9) Sinking to V+ VIN = –200 mV (Note 9) 3 mA www.national.com LMP7711 5V Electrical Characteristics IS Supply Current (Continued) 1.15 0.14 6.0 7.5 9.5 11.5 17 6.8 5.8 0.01 1.40 1.75 1 4 mA µA V/µs MHz nV/ pA/ ns ns Enable Mode VEN > 4.6 Shutdown Mode VEN < 0.4 SR GBW en in ton toff VEN IEN THD Slew Rate Gain Bandwidth Product Input-Referred Voltage Noise Input-Referred Current Noise Turn-on Time Turn-off Time Enable Pin Voltage Range Enable Pin Input Current Total Harmonic Distortion AV = +1, Rising (10% to 90%) AV = +1, Falling (90% to 10%) f = 400 Hz f = 1 kHz f = 1 kHz Enable Mode Shutdown Mode VEN > 4.6V (Note 7) VEN < 0.4V (Note 7) f = 1 kHz, AV = 1, RL = 600Ω 4.6 to 5.0 4.5 to 5.0 0 to 0.4 0 to 0.5 5.6 0.005 0.01 10 0.2 V 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 Part Number LMP7711MK LMP7711MKX Package Marking AC3A Transport Media 1k Units Tape and Reel 3k Units Tape and Reel NSC Drawing MK06A www.national.com 4 LMP7711 Precision, 17 MHz, Low Noise, CMOS Input Amplifier Physical Dimensions 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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