lmp7701max

Manufacturer Part Numberlmp7701max
DescriptionPrecision, Cmos Input, Rrio, Wide Supply Range Amplifiers
ManufacturerNational Semiconductor Corporation
lmp7701max datasheet
 


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LMP7701/LMP7702/LMP7704
Precision, CMOS Input, RRIO, Wide Supply Range
Amplifiers
General Description
The LMP7701/LMP7702/LMP7704 are single, dual, and quad
low offset voltage, rail-to-rail input and output precision am-
plifiers each with a CMOS input stage and a wide supply
voltage range. The LMP7701/LMP7702/LMP7704 are part of
the LMP
®
precision amplifier family and are 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 ±1 pA
make the LMP7701 ideal for precision applications. The
LMP7701/LMP7702/LMP7704 are built utilizing VIP50 tech-
nology, which allows the combination of a CMOS input stage
and a 12V common mode and supply voltage range. This
makes the LMP7701/LMP7702/LMP7704 great choices in
many applications where conventional CMOS parts cannot
operate under the desired voltage conditions.
The LMP7701/LMP7702/LMP7704 each have a rail-to-rail in-
put stage that significantly reduces the CMRR glitch com-
monly associated with rail-to-rail 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/LMP7702/
LMP7704 swings within 40 mV of either rail to maximize the
signal dynamic range in applications requiring low supply
voltage.
The LMP7701 is offered in the space saving 5-Pin SOT23 and
8-Pin SOIC package. The LMP7702 is offered in the 8-Pin
SOIC and 8-Pin MSOP package. The quad LMP7704 is of-
fered in the 14-Pin TSSOP package. These small packages
are ideal solutions for area constrained PC boards and
portable electronics.
Typical Application
LMP
®
is a registered trademark of National Semiconductor Corporation.
© 2007 National Semiconductor Corporation
Features
Unless otherwise noted, typical values at V
Input offset voltage (LMP7701)
Input offset voltage (LMP7702/LMP7704) ±220 µV (max)
Input bias current
Input voltage noise
CMRR
Open loop gain
Temperature range
Unity gain bandwidth
Supply current (LMP7701)
Supply current (LMP7702)
Supply current (LMP7704)
Supply voltage range
Rail-to-rail input and output
Applications
High impedance sensor interface
Battery powered instrumentation
High gain amplifiers
DAC buffer
Instrumentation amplifier
Active filters
Precision Current Source
201273
September 2007
= 5V
S
±200 µV (max)
±200 fA
9 nV/
Hz
130 dB
130 dB
−40°C to 125°C
2.5 MHz
715 µA
1.5 mA
2.9 mA
2.7V to 12V
20127305
www.national.com

lmp7701max Summary of contents

  • Page 1

    ... TSSOP package. These small packages are ideal solutions for area constrained PC boards and portable electronics. Typical Application LMP ® registered trademark of National Semiconductor Corporation. © 2007 National Semiconductor Corporation Features Unless otherwise noted, typical values at V ■ Input offset voltage (LMP7701) ■ ...

  • Page 2

    Absolute Maximum Ratings 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 V Differential IN Supply Voltage ( ...

  • Page 3

    Symbol Parameter V Output Swing High O Output Swing Low I Output Short Circuit Current O (Notes Supply Current S SR Slew Rate (Note 10) GBW Gain Bandwidth Product THD+N Total Harmonic Distortion + Noise e Input-Referred ...

  • Page 4

    Symbol Parameter I Input Offset Current OS CMRR Common Mode Rejection Ratio PSRR Power Supply Rejection Ratio CMVR Input Common-Mode Voltage Range A Large Signal Voltage Gain VOL V Output Swing High O Output Swing Low I Output Short Circuit ...

  • Page 5

    Symbol Parameter THD+N Total Harmonic Distortion + Noise e Input-Referred Voltage Noise n i Input-Referred Current Noise n ±5V Electrical Characteristics Unless otherwise specified, all limits are guaranteed for T face limits apply at the temperature extremes. Symbol Parameter V ...

  • Page 6

    Symbol Parameter V Output Swing High O Output Swing Low I Output Short Circuit Current O (Notes Supply Current S SR Slew Rate (Note 10) GBW Gain Bandwidth Product THD+N Total Harmonic Distortion + Noise e Input-Referred ...

  • Page 7

    ... Connection Diagrams 5-Pin SOT23 (LMP7701) Top View 8-Pin SOIC/MSOP (LMP7702) Top View Ordering Information Package Part Number LMP7701MF 5-Pin SOT23 LMP7701MFX LMP7701MA 8-Pin SOIC LMP7701MAX LMP7702MA 8-Pin SOIC LMP7702MAX LMP7702MM 8-Pin MSOP LMP7702MMX LMP7704MT 14-Pin TSSOP LMP7704MTX 20127302 14-Pin TSSOP (LMP7704) 20127303 ...

  • Page 8

    Typical Performance Characteristics Offset Voltage Distribution Offset Voltage Distribution Offset Voltage Distribution www.national.com Unless otherwise noted: T TCV 20127336 TCV 20127337 TCV 20127338 8 = 25° /2, R > 10 kΩ Distribution OS ...

  • Page 9

    Offset Voltage vs. Temperature 20127306 Offset Voltage vs. Supply Voltage 20127310 Offset Voltage vs 20127308 CMRR vs. Frequency Offset Voltage vs. V Offset Voltage vs 20127350 CM 20127307 CM 20127309 www.national.com ...

  • Page 10

    Input Bias Current vs. V Input Bias Current vs. V Input Bias Current vs. V www.national.com Input Bias Current vs 20127346 Input Bias Current vs 20127347 Input Bias Current vs 20127348 10 CM 20127330 ...

  • Page 11

    PSRR vs. Frequency 20127345 Sinking Current vs. Supply Voltage 20127313 Output Voltage vs. Output Current 20127316 Supply Current vs. Supply Voltage (Per Channel) Sourcing Current vs. Supply Voltage Slew Rate vs. Supply Voltage 11 20127311 20127312 20127317 www.national.com ...

  • Page 12

    Open Loop Frequency Response Large Signal Step Response Large Signal Step Response www.national.com Open Loop Frequency Response 20127315 Small Signal Step Response 20127318 Small Signal Step Response 20127319 12 20127314 20127320 20127326 ...

  • Page 13

    Input Voltage Noise vs. Frequency Output Swing High vs. Supply Voltage 20127333 Output Swing High vs. Supply Voltage 20127332 Open Loop Gain vs. Output Voltage Swing 20127327 Output Swing Low vs. Supply Voltage Output Swing Low vs. Supply Voltage 13 ...

  • Page 14

    THD+N vs. Frequency Crosstalk Rejection Ratio vs. Frequency (LMP7702/ LMP7704) www.national.com THD+N vs. Output Voltage 20127328 20127353 14 20127329 ...

  • Page 15

    Application Information LMP7701/LMP7702/LMP7704 The LMP7701/LMP7702/LMP7704 are single, dual, and quad low offset voltage, rail-to-rail input and output precision am- plifiers each with a CMOS input stage and wide supply voltage range of 2.7V to 12V. The LMP7701/LMP7702/LMP7704 have a very ...

  • Page 16

    This equation is rearranged to find the location of the two poles: As shown in Equation 1, as values of R the magnitude of the poles is reduced, which in turn decreas- es the bandwidth of the amplifier. Whenever possible, ...

  • Page 17

    PRECISION CURRENT SOURCE The LMP7701/LMP7702/LMP7704 can each be used as a precision current source in many different applications. Figure 6 shows a typical precision current source. This circuit imple- ments a precision voltage controlled current source. Amplifier ...

  • Page 18

    TOTAL NOISE CONTRIBUTION The LMP7701/LMP7702/LMP7704 have very low input bias current, very low input current noise, and very low input volt- age noise result, these amplifiers are ideal choices for circuits with high impedance sensor applications. Figure 8 ...

  • Page 19

    FIGURE 11. Temperature Dependence Electrode The schematic shown in Figure typical circuit which can be used for pH measurement. The LM35 is a precision integrated circuit temperature sensor. This sensor is differen- tiated from ...

  • Page 20

    Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 5-Pin SOT23 NS Package Number MF05A 8-Pin SOIC NS Package Number M08A 20 ...

  • Page 21

    MSOP NS Package Number MUA08A 14-Pin TSSOP NS Package Number MTC14 21 www.national.com ...

  • Page 22

    ... National Semiconductor and the National Semiconductor logo are registered trademarks of National Semiconductor Corporation. All other brand or product names may be trademarks or registered trademarks of their respective holders. ...