September 2005 LMP7701 Precision, CMOS Input, RRIO, Wide Supply Range Amplifier General Description Features The LMP7701 is a single, low offset voltage, rail-to-rail input and output precision amplifier with a CMOS input stage and a wide supply voltage range. The LMP7701 is part of the LMP™ precision amplifier family and is ideal for sensor interface and other instrumentation applications. The guaranteed low offset voltage of less than ± 200 µV along with the guaranteed low input bias current of less than ± 10 pA make the LMP7701 ideal for precision applications. The LMP7701 is built utilizing VIP50 technology, which allows the combination of a CMOS input stage and a 12V common mode and supply voltage range. This makes the LMP7701 a great choice in many applications where conventional CMOS parts cannot operate under the desired voltage conditions. The LMP7701 has a rail-to-rail input stage that significantly reduces the CMRR glitch commonly associated with rail-torail input amplifiers. This is achieved by trimming both sides of the complimentary input stage, thereby reducing the difference between the NMOS and PMOS offsets. The output of the LMP7701 swings within 40 mV of either rail to maximize the signal dynamic range in applications requiring low supply voltage. The LMP7701 is offered in space saving SOT23-5. This small package is an ideal solution for area constrained PC boards and portable electronics. Unless otherwise noted, typical values at VS = 5V ± 200 µV (max) n Input offset voltage n Input bias current 300 fA n Input voltage noise 12 nV/ n CMRR 100 dB n Open loop gain 130 dB n Temperature range –40˚C to 125˚C n Unity gain bandwidth 2.5 MHz n Supply current 715 µA n Supply Voltage Range 2.7V to 12V n Rail-to-rail input and output Applications n n n n n n High impedance sensor interface Battery powered instrumentation High gain amplifiers DAC buffer Instrumentation amplifier Active filters Typical Application 20127305 Precision Current Source LMP™ is a trademark of National Semiconductor Corporation. © 2005 National Semiconductor Corporation DS201273 www.national.com LMP7701 Precision, CMOS Input, RRIO, Wide Supply Range Amplifier PRELIMINARY LMP7701 Absolute Maximum Ratings (Note 1) Junction Temperature (Note 3) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Soldering Information ESD Tolerance (Note 2) Human Body Model 2 kV Machine Model 200V Supply Voltage (VS = V+ – V−) Voltage at Input/Output Pins 235˚C Wave Soldering Lead Temp. (10 sec) 260˚C Temperature Range (Note 3) 13.2V 5-Pin SOT23 −65˚C to +150˚C 3V Electrical Characteristics 2.7V to 12V Package Thermal Resistance (θJA (Note 3)) 10 mA Storage Temperature Range −40˚C to +125˚C Supply Voltage (VS = V+ – V−) V++ 0.3V, V− − 0.3V Input Current Infrared or Convection (20 sec) Operating Ratings (Note 1) ± 300 mV VIN Differential +150˚C 234˚C/W (Note 4) Unless otherwise specified, all limits are guaranteed for TA = 25˚C, V+ = 3V, V− = 0V, VCM = V+/2, and RL > 10 kΩ to V+/2. Boldface limits apply at the temperature extremes. Symbol Parameter VOS Input Offset Voltage Conditions Min (Note 6) Typ (Note 5) Max (Note 6) ± 37 ± 200 ± 500 ±5 TCVOS Input Offset Voltage Drift (Note 7) ±1 IB Input Bias Current (Notes 7, 8) 0.3 IOS Input Offset Current CMRR Common Mode Rejection Ratio 0V ≤ VCM ≤ 3V 86 80 98 PSRR Power Supply Rejection Ratio 2.7V ≤ V+ ≤ 12V, Vo = V+/2 86 82 98 CMVR Input Common-Mode Voltage Range CMRR ≥ 80 dB CMRR ≥ 77 dB –0.2 –0.2 AVOL Large Signal Voltage Gain RL = 2 kΩ VO = 0.3V to 2.7V 100 96 114 RL = 10 kΩ VO = 0.2V to 2.8V 100 96 124 RL = 2 kΩ to V+/2 2.92 2.88 2.96 RL = 10 kΩ to V+/2 2.96 2.94 2.97 VO Output Swing High Output Swing Low IO Output Short Circuit Current (Notes 3, 9) IS Supply Current SR Slew Rate (Note 10) GBW Gain Bandwidth Product THD+N en Units µV µV/˚C 10 300 pA 40 fA dB dB 3.2 3.2 dB V RL = 2 kΩ to V+/2 0.04 0.06 0.08 RL = 10 kΩ to V+/2 0.02 0.04 0.05 Sourcing VO = 0V VIN = 100 mV 25 15 42 Sinking VO = 3V VIN = −100 mV 25 20 42 0.670 V V mA 1.0 1.2 mA AV = +1, VO = 2 VPP 10% to 90% 0.9 V/µs 2.5 MHz Total Harmonic Distortion + Noise f = 1 kHz, Av = 1, RL = 1 kΩ 0.02 Input-Referred Voltage Noise f = 1 kHz www.national.com 12 2 % nV/ (Note 4) (Continued) Unless otherwise specified, all limits are guaranteed for TA = 25˚C, V+ = 3V, V− = 0V, VCM = V+/2, and RL > 10 kΩ to V+/2. Boldface limits apply at the temperature extremes. Symbol Parameter Input-Referred Current Noise in 5V Electrical Characteristics Conditions Min (Note 6) f = 100 kHz Typ (Note 5) Max (Note 6) 1 Units fA/ (Note 4) Unless otherwise specified, all limits are guaranteed for T = 25˚C, V+ = 5V, V− = 0V, VCM = V+/2, and RL > 10 kΩ to V+/2. Boldface limits apply at the temperature extremes. Symbol Parameter Conditions Min (Note 6) Typ (Note 5) Max (Note 6) ± 37 ± 200 ± 500 ±5 VOS Input Offset Voltage TCVOS Input Offset Voltage Drift (Note 7) ±1 IB Input Bias Current (Notes 7, 8) 0.3 IOS Input Offset Current CMRR Common Mode Rejection Ratio 0V ≤ VCM ≤ 5V PSRR Power Supply Rejection Ratio 2.7V ≤ V ≤ 12V, Vo = V /2 CMVR Input Common-Mode Voltage Range CMRR ≥ 80 dB CMRR ≥ 78 dB –0.2 –0.2 AVOL Large Signal Voltage Gain RL = 2 kΩ VO = 0.3V to 4.7V 100 96 119 RL = 10 kΩ VO = 0.2V to 4.8V 100 96 130 RL = 2 kΩ to V+/2 4.89 4.87 4.94 RL = 10 kΩ to V+/2 4.95 4.93 4.96 VO Output Swing High Output Swing Low IO Output Short Circuit Current (Notes 3, 9) IS Supply Current SR Slew Rate (Note 10) GBW Gain Bandwidth Product THD+N Units µV µV/˚C 10 300 pA 40 + + 88 83 100 86 82 98 fA dB dB 5.2 5.2 dB V RL = 2 kΩ to V+/2 0.05 0.08 0.09 RL = 10 kΩ to V+/2 0.03 0.04 0.05 Sourcing VO = 0V VIN = 100 mV 40 28 66 Sinking VO = 5V VIN = −100 mV 40 28 76 0.715 V V mA 1.0 1.2 mA AV = +1, VO = 4 VPP 10% to 90% 1.0 Total Harmonic Distortion + Noise f = 1 kHz, Av = 1, RL = 1 kΩ 0.02 en Input-Referred Voltage Noise f = 1 kHz 12 nV/ in Input-Referred Current Noise f = 100 kHz 1 fA/ 2.5 3 V/µs MHz % www.national.com LMP7701 3V Electrical Characteristics LMP7701 ± 5V Electrical Characteristics (Note 4) Unless otherwise specified, all limits are guaranteed for TA = 25˚C, V+ = 5V, V− = –5 V, VCM =0, and RL > 10 kΩ to VCM. Boldface limits apply at the temperature extremes. Symbol Parameter VOS Input Offset Voltage Conditions Min (Note 6) Typ (Note 5) Max (Note 6) ± 37 ± 200 ± 500 ±5 TCVOS Input Offset Voltage Drift (Note 7) ±1 IB Input Bias Current (Notes 7, 8) 0.3 IOS Input Offset Current CMRR Common Mode Rejection Ratio –5V ≤ VCM ≤ 5V 92 88 110 PSRR Power Supply Rejection Ratio 2.7V ≤ V+ ≤ 12V, Vo = VCM 86 82 98 CMVR Input Common-Mode Voltage Range CMRR ≥ 80 dB CMRR ≥ 78dB –5.2 –5.2 AVOL Large Signal Voltage Gain RL = 2 kΩ VO = –4.7V to 4.7V 100 98 121 RL = 10 kΩ VO = –4.8V to 4.8V 100 98 134 RL = 2 kΩ to VCM 4.85 4.83 4.91 RL = 10 kΩ to VCM 4.92 4.90 4.96 VO Output Swing High Output Swing Low IO Output Short Circuit Current (Notes 3, 9) Units µV µV/˚C 10 300 pA 40 fA dB dB 5.2 5.2 dB V RL = 2 kΩ to VCM −4.91 −4.87 -4.85 RL = 10 kΩ to VCM −4.96 −4.95 -4.94 Sourcing VO = –5V VIN = 100 mV 50 35 86 Sinking VO = 5V VIN = −100 mV 50 35 84 V V mA IS Supply Current SR Slew Rate (Note 10) GBW Gain Bandwidth Product THD+N Total Harmonic Distortion + Noise f = 1 kHz, Av = 1, RL = 1 kΩ en Input-Referred Voltage Noise f = 1 kHz 12 nV/ in Input-Referred Current Noise f = 100 kHz 1 fA/ 0.790 AV = +1, VO = 9 VPP 10% to 90% 1.1 1.3 mA 1.1 V/µs 2.5 MHz 0.02 % 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, and TA. 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: 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. Note 5: Typical values represent the parametric norm at the time of characterization. Note 6: 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 7: Guaranteed by design. Note 8: Positive current corresponds to current flowing into the device. Note 9: The short circuit test is a momentary test. Note 10: The number specified is the slower of positive and negative slew rates. www.national.com 4 LMP7701 Connection Diagram 5-Pin SOT23 20127302 Top View Ordering Information Package 5-Pin SOT-23 Part Number LMP7701MF LMP7701MFX Package Marking Transport Media 1k Units Tape and Reel AC2A 3k Units Tape and Reel 5 NSC Drawing MF05A www.national.com LMP7701 Precision, CMOS Input, RRIO, Wide Supply Range Amplifier Physical Dimensions inches (millimeters) unless otherwise noted 5-Pin SOT23 NS Package Number MF05A 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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