IC AMP PREC RRIO DUAL 8-MSOP

LMP7708MM/NOPB

Manufacturer Part NumberLMP7708MM/NOPB
DescriptionIC AMP PREC RRIO DUAL 8-MSOP
ManufacturerNational Semiconductor
SeriesLMP®, PowerWise®
LMP7708MM/NOPB datasheet
 

Specifications of LMP7708MM/NOPB

Amplifier TypeGeneral PurposeNumber Of Circuits2
Output TypeRail-to-RailSlew Rate5.9 V/µs
Gain Bandwidth Product15MHzCurrent - Input Bias0.2pA
Voltage - Input Offset37µVCurrent - Supply1.7mA
Current - Output / Channel86mAVoltage - Supply, Single/dual (±)2.7 V ~ 12 V, ±1.35 V ~ 6 V
Operating Temperature-40°C ~ 125°CMounting TypeSurface Mount
Package / Case8-MSOP, Micro8™, 8-uMAX, 8-uSOP,Number Of Channels2
Voltage Gain Db130 dBCommon Mode Rejection Ratio (min)86 dB
Input Offset Voltage0.22 mV at 5 VOperating Supply Voltage3 V, 5 V, 9 V
Supply Current1.9 mA at 5 VMaximum Operating Temperature+ 125 C
Minimum Operating Temperature- 40 CLead Free Status / RoHS StatusLead free / RoHS Compliant
-3db Bandwidth-Other namesLMP7708MMTR
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LMP7707/LMP7708/LMP7709
Precision, CMOS Input, RRIO, Wide Supply Range
Decompensated Amplifiers
General Description
The LMP7707/LMP7708/LMP7709 devices are single, dual,
and quad low offset voltage, rail-to-rail input and output pre-
cision amplifiers which each have a CMOS input stage and a
wide supply voltage range. The LMP7707/LMP7708/
LMP7709 are part of the LMP
®
precision amplifier family and
are ideal for sensor interface and other instrumentation ap-
plications. These decompensated amplifiers are stable at a
gain of 6 and higher.
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 LMP7707/LMP7708/LMP7709 ideal for precision
applications. The LMP7707/LMP7708/LMP7709 are built uti-
lizing VIP50 technology, which allows the combination of a
CMOS input stage and a supply voltage range of 12V with
rail-to-rail common mode voltage capability. The LMP7707/
LMP7708/LMP7709 are the perfect choice in many applica-
tions where conventional CMOS parts cannot operate due to
the voltage conditions.
The unique design of the rail-to-rail input stage of each of the
LMP7707/LMP7708/LMP7709 significantly reduces the CM-
RR glitch commonly associated with rail-to-rail input ampli-
fiers. Both sides of the complimentary input stage have been
trimmed, thereby reducing the difference between the NMOS
and PMOS offsets. The output swings within 40 mV of either
rail to maximize the signal dynamic range in applications re-
quiring low supply voltage.
The LMP7707 is offered in the space saving 5-Pin SOT23 and
8-pin SOIC package, the LMP7708 is offered in the 8-Pin
MSOP and 8-pin SOIC package and the quad LMP7709 is
offered in the 14-Pin TSSOP and the 14-pin SOIC package.
These small packages are ideal solutions for area con-
strained PC boards and portable electronics.
Open Loop Frequency Response
Increased Bandwidth for Same Supply Current at A
LMP
®
is a registered trademark of National Semiconductor Corporation.
© 2008 National Semiconductor Corporation
Features
Unless otherwise noted, typical values at V
Input offset voltage (LMP7707)
Input offset voltage (LMP7708/LMP7709) ±220 µV (max)
Input bias current
Input voltage noise
CMRR
Open loop gain
Temperature range
Gain bandwidth product (A
Stable at a gain of 10 or higher
Supply current (LMP7707)
Supply current (LMP7708)
Supply current (LMP7709)
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
202037
July 30, 2008
= 5V.
S
±200 µV (max)
±200 fA
9 nV/
130 dB
130 dB
−40°C to 125°C
=10)
14 MHz
V
715 µA
1.5 mA
2.9 mA
2.7V to 12V
20203764
> 10
V
www.national.com
Hz

LMP7708MM/NOPB Summary of contents

  • Page 1

    ... These small packages are ideal solutions for area con- strained PC boards and portable electronics. Open Loop Frequency Response Increased Bandwidth for Same Supply Current at A LMP ® registered trademark of National Semiconductor Corporation. © 2008 National Semiconductor Corporation Features Unless otherwise noted, typical values at V ■ Input offset voltage (LMP7707) ■ ...

  • 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   Charge Device Model V Differential IN Supply Voltage ( – V − Voltage at Input/Output Pins ...

  • 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) GBWP 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 Open Loop 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) GBWP Gain Bandwidth Product THD+N Total Harmonic Distortion + Noise e Input-Referred ...

  • Page 7

    Connection Diagrams LMP7707 5-Pin SOT23 Top View LMP7708 8-Pin MSOP/SOIC Top View Ordering Information Package Part Number LMP7707MF 5-Pin SOT23 LMP7707MFX LMP7707MA 8-Pin SOIC LMP7707MAX LMP7708MM 8-Pin MSOP LMP7708MMX LMP7708MA 8-Pin SOIC LMP7708MAX LMP7709MT 14-Pin TSSOP LMP7709MTX LMP7709MA 14-Pin SOIC ...

  • Page 8

    Typical Performance Characteristics connected )/2 + − Offset Voltage Distribution Offset Voltage Distribution Offset Voltage Distribution www.national.com Unless otherwise specified, T TCV 20203736 TCV 20203737 TCV 20203738 8 = 25° /2, R > 10 ...

  • Page 9

    Offset Voltage vs. Temperature 20203706 Offset Voltage vs. Supply Voltage 20203710 Offset Voltage vs 20203708 CMRR vs. Frequency Offset Voltage vs. V Offset Voltage vs 20203750 CM 20203707 CM 20203709 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 20203746 Input Bias Current vs 20203747 Input Bias Current vs 20203748 10 CM 20203730 ...

  • Page 11

    PSRR vs. Frequency 20203745 Sinking Current vs. Supply Voltage 20203713 Output Voltage vs. Output Current 20203716 Supply Current vs. Supply Voltage (Per Channel) Sourcing Current vs. Supply Voltage Slew Rate vs. Supply Voltage 11 20203711 20203712 20203717 www.national.com ...

  • Page 12

    Open Loop Frequency Response Small Signal Step Response, A Small Signal Step Response, A www.national.com Open Loop Frequency Response 20203715 = 10 Large Signal Step Response 20203719 = 100 Large Signal Step Response 20203726 12 20203714 ...

  • Page 13

    Input Voltage Noise vs. Frequency Output Swing High vs. Supply Voltage 20203733 Output Swing High vs. Supply Voltage 20203732 Open Loop Gain vs. Output Voltage Swing 20203727 Output Swing Low vs. Supply Voltage Output Swing Low vs. Supply Voltage 13 ...

  • Page 14

    THD+N vs. Frequency Crosstalk Rejection Ratio vs. Frequency (LMP7708/LMP7709) www.national.com THD+N vs. Output Voltage 20203728 20203753 14 20203729 ...

  • Page 15

    ... The increase in bandwidth and slew rate is obtained without any additional power consumption. National Semiconductor is heavily committed to precision amplifiers and the market segment they serve. Technical sup- port and extensive characterization data is available for sen- sitive applications or applications with a constrained error budget ...

  • Page 16

    FIGURE 3. Input of the LMP7707 TOTAL NOISE CONTRIBUTION The LMP7707/LMP7708/LMP7709 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 ...

  • Page 17

    FIGURE 6. Open Loop Frequency Response Compensated Amplifier (LMP7701) This amplifier is unity gain stable, because the phase shift is still < 180°, when the gain crosses 0 dB (unity gain). Stability can be expressed in two different ways: Phase ...

  • Page 18

    FIGURE 8. Op Amp with Resistive Feedback. (a) Non- inverting (b) Inverting The feedback function for a three-terminal op amp as shown in Figure 8 is the feedback voltage V input terminals relative to the op amp output voltage, V ...

  • Page 19

    This example, represented by Figure 8 and Figure 9, is gener the sense that the G as specified did not distinguish MIN between inverting and non-inverting configurations. FIGURE 11. Compensation with Reduced Loop Gain The technique of reducing ...

  • Page 20

    FIGURE 14. LMP7707 with Lead-Lag Compensation for Inverting Configuration The inverse feedback factor of the circuit in Figure 14 is: The pole of the inverse feedback function is located at: The zero of the inverse feedback function is located at: ...

  • Page 21

    Procedure: The compensation circuit shown in Figure 14 is implemented. The inverse feedback function is shaped by the solid line in Figure 15. The 1/F plot low frequencies. At higher frequencies made to intersect ...

  • Page 22

    Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 5-Pin SOT23 NS Package Number MF05A 8-Pin SOIC NS Package Number M08A 22 ...

  • Page 23

    MSOP NS Package Number MUA08A 14-Pin SOIC NS Package Number M14A 23 www.national.com ...

  • Page 24

    TSSOP NS Package Number MTC14 24 ...

  • Page 25

    Notes 25 www.national.com ...

  • Page 26

    ... For more National Semiconductor product information and proven design tools, visit the following Web sites at: Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock Conditioners www.national.com/timing Data Converters www.national.com/adc Displays www.national.com/displays Ethernet www.national.com/ethernet Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www ...