LMP7701

LMP7701 Precision, CMOS Input, RRIO, Wide Supply Range Amplifier PRELIMINARY September 2005 LMP7701 Precision, CMOS Input, RRIO, Wide Supply Range Amplifier General Description 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. Features 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 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 Model Machine Model VIN Differential Supply Voltage (VS = V+ – V−) Voltage at Input/Output Pins Input Current Storage Temperature Range 2 kV 200V Junction Temperature (Note 3) Soldering Information Infrared or Convection (20 sec) Wave Soldering Lead Temp. (10 sec) +150˚C 235˚C 260˚C ± 300 mV 13.2V V++ 0.3V, V− − 0.3V 10 mA −65˚C to +150˚C (Note 4) Operating Ratings (Note 1) Temperature Range (Note 3) Supply Voltage (VS = V+ – V−) Package Thermal Resistance (θJA (Note 3)) 5-Pin SOT23 234˚C/W −40˚C to +125˚C 2.7V to 12V 3V Electrical Characteristics Symbol VOS TCVOS IB IOS CMRR PSRR CMVR AVOL Parameter Input Offset Voltage Input Offset Voltage Drift Input Bias Current Input Offset Current Common Mode Rejection Ratio Power Supply Rejection Ratio Input Common-Mode Voltage Range Large Signal Voltage Gain 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. Conditions Min (Note 6) Typ (Note 5) Max (Note 6) Units ± 37 (Note 7) (Notes 7, 8) ±1 0.3 40 ± 200 ± 500 ±5 10 300 µV µV/˚C pA fA dB dB 0V ≤ VCM ≤ 3V 2.7V ≤ V+ ≤ 12V, Vo = V+/2 CMRR ≥ 80 dB CMRR ≥ 77 dB RL = 2 kΩ VO = 0.3V to 2.7V RL = 10 kΩ VO = 0.2V to 2.8V 86 80 86 82 –0.2 –0.2 100 96 100 96 2.92 2.88 2.96 2.94 98 98 3.2 3.2 114 124 2.96 2.97 0.04 0.02 0.06 0.08 0.04 0.05 V dB VO Output Swing High RL = 2 kΩ to V+/2 RL = 10 kΩ to V+/2 V Output Swing Low RL = 2 kΩ to V+/2 RL = 10 kΩ to V+/2 V IO Output Short Circuit Current (Notes 3, 9) Sourcing VO = 0V VIN = 100 mV Sinking VO = 3V VIN = −100 mV 25 15 25 20 42 42 0.670 1.0 1.2 mA IS SR GBW THD+N en Supply Current Slew Rate (Note 10) Gain Bandwidth Product Total Harmonic Distortion + Noise Input-Referred Voltage Noise f = 1 kHz, Av = 1, RL = 1 kΩ f = 1 kHz AV = +1, VO = 2 VPP 10% to 90% mA V/µs MHz % nV/ 0.9 2.5 0.02 12 www.national.com 2 LMP7701 3V Electrical Characteristics Symbol in Parameter Input-Referred Current Noise (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. Conditions f = 100 kHz (Note 4) Min (Note 6) Typ (Note 5) 1 Max (Note 6) Units fA/ 5V Electrical Characteristics Symbol VOS TCVOS IB IOS CMRR PSRR CMVR AVOL Parameter Input Offset Voltage Input Offset Voltage Drift Input Bias Current Input Offset Current Common Mode Rejection Ratio Power Supply Rejection Ratio Input Common-Mode Voltage Range Large Signal Voltage Gain 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. Conditions Min (Note 6) Typ (Note 5) Max (Note 6) Units ± 37 (Note 7) (Notes 7, 8) ±1 0.3 40 ± 200 ± 500 ±5 10 300 µV µV/˚C pA fA dB dB 0V ≤ VCM ≤ 5V 2.7V ≤ V ≤ 12V, Vo = V /2 + + 88 83 86 82 –0.2 –0.2 100 96 100 96 4.89 4.87 4.95 4.93 100 98 5.2 5.2 119 130 4.94 4.96 0.05 0.03 0.08 0.09 0.04 0.05 CMRR ≥ 80 dB CMRR ≥ 78 dB RL = 2 kΩ VO = 0.3V to 4.7V RL = 10 kΩ VO = 0.2V to 4.8V V dB VO Output Swing High RL = 2 kΩ to V+/2 RL = 10 kΩ to V+/2 V Output Swing Low RL = 2 kΩ to V+/2 RL = 10 kΩ to V+/2 V IO Output Short Circuit Current (Notes 3, 9) Sourcing VO = 0V VIN = 100 mV Sinking VO = 5V VIN = −100 mV 40 28 40 28 66 76 0.715 1.0 1.2 mA IS SR GBW THD+N en in Supply Current Slew Rate (Note 10) Gain Bandwidth Product Total Harmonic Distortion + Noise Input-Referred Voltage Noise Input-Referred Current Noise f = 1 kHz, Av = 1, RL = 1 kΩ f = 1 kHz f = 100 kHz AV = +1, VO = 4 VPP 10% to 90% mA V/µs MHz % nV/ fA/ 1.0 2.5 0.02 12 1 3 www.national.com 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 VOS TCVOS IB IOS CMRR PSRR CMVR AVOL Parameter Input Offset Voltage Input Offset Voltage Drift Input Bias Current Input Offset Current Common Mode Rejection Ratio Power Supply Rejection Ratio Input Common-Mode Voltage Range Large Signal Voltage Gain –5V ≤ VCM ≤ 5V 2.7V ≤ V+ ≤ 12V, Vo = VCM CMRR ≥ 80 dB CMRR ≥ 78dB RL = 2 kΩ VO = –4.7V to 4.7V RL = 10 kΩ VO = –4.8V to 4.8V VO Output Swing High RL = 2 kΩ to VCM RL = 10 kΩ to VCM Output Swing Low RL = 2 kΩ to VCM RL = 10 kΩ to VCM IO Output Short Circuit Current (Notes 3, 9) Sourcing VO = –5V VIN = 100 mV Sinking VO = 5V VIN = −100 mV IS SR GBW THD+N en in Supply Current Slew Rate (Note 10) Gain Bandwidth Product Total Harmonic Distortion + Noise Input-Referred Voltage Noise Input-Referred Current Noise f = 1 kHz, Av = 1, RL = 1 kΩ f = 1 kHz f = 100 kHz AV = +1, VO = 9 VPP 10% to 90% 50 35 50 35 92 88 86 82 –5.2 –5.2 100 98 100 98 4.85 4.83 4.92 4.90 121 134 4.91 4.96 −4.91 −4.96 86 84 0.790 1.1 2.5 0.02 12 1 nV/ fA/ 1.1 1.3 mA −4.87 -4.85 −4.95 -4.94 V dB (Note 7) (Notes 7, 8) Conditions Min (Note 6) Typ (Note 5) Max (Note 6) Units ± 37 ±1 0.3 40 110 98 ± 200 ± 500 ±5 10 300 µV µV/˚C pA fA dB dB 5.2 5.2 V V mA V/µs MHz % 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 AC2A Transport Media 1k Units Tape and Reel 3k Units Tape and Reel NSC Drawing MF05A 5 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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