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National LMP7717 LMP7718 Data Handbook

Summary

These low-noise CMOS operational amplifiers (LMP7717/LMP7718) are engineered for demanding instrumentation and signal processing applications. Featuring a high gain bandwidth product of 88 MHz, rail-to-rail output, and ultra-low power consumption, these dual or single channels maintain stability across wide temperature ranges (-40°C to 125°C). The manual provides comprehensive electrical data covering specifications for medical instruments, active filters, photodiode amplifiers, and power sensor applications.

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查询LMP7718MME供应商

/L z, P re is io , L is , 1 .8 In t, D te ra tio l A lifie

November 6, 2007

LMP7717/LMP7718 88 MHz, Precision, Low Noise, 1.8V CMOS Input, Decompensated Operational Amplifier General Description Features The LMP7717 (single) and the LMP7718 (dual) low noise, (Typical 5V supply, unless otherwise noted) CMOS input operational amplifiers offer a low input voltage Input offset voltage ±150 µV (max)

noise density of 5.8 n V/ while consuming only 1.15 m A

Input referred voltage noise 5.8 n V/√Hz

(LMP7717) of quiescent current. The LMP7717/LMP7718 are

Input bias current 100 f A

stable at a gain of 10 and have a gain bandwidth (GBW)

Gain bandwidth product 88 MHz

product of 88 MHz. The LMP7717/LMP7718 have a supply

Supply voltage range 1.8V to 5.5V

voltage range of 1.8V to 5.5V and can operate from a single

Supply current per channel

supply. The LMP7717/LMP7718 each feature a rail-to-rail

LMP7717 1.15 m A

output stage. Both amplifiers are part of the LMP® precision

amplifier family and are ideal for a variety of instrumentation LMP7718 1.30 m A

applications. Rail-to-Rail output swing

The LMP7717 family provides optimal performance in low @ 10 kΩ load 25 m V from rail voltage and low noise systems. A CMOS input stage, with @ 2 kΩ load 45 m V from rail typical input bias currents in the range of a few femto-Am- Guaranteed 2.5V and 5.0V performance

peres, and an input common mode voltage range, which Total harmonic distortion 0.04% @1 k Hz, 600Ω includes ground, make the LMP7717/LMP7718 ideal for low Temperature range −40°C to 125°C power sensor applications where high speeds are needed. The LMP7717/LMP7718 are manufactured using National’s Applications advanced VIP50 process. The LMP7717 is offered in either a

ADC interface

5-Pin SOT23 or an 8-Pin SOIC package. The LMP7718 is

offered in either the 8-Pin SOIC or the 8-Pin MSOP. Photodiode amplifiers Active filters and buffers Low noise signal processing Medical instrumentation Sensor interface applications

Typical Application

Photodiode Transimpedance Amplifier Input Referred Voltage Noise vs. Frequency

LMP® is a registered trademark of National Semiconductor Corporation.

© 2007 National Semiconductor Corporation www.national.com

Page Summary Contents For National LMP7717 LMP7718 Data Handbook

Page 1 查询LMP7718MME供应商 /L z, P re is io , L is , 1 .8 In t, D te ra tio l A lifie November 6, 2007 LMP7717/LMP7718 88 MHz, Precision, Low Noise, 1.8V CMOS Input, Decompensated Operational Amplifier General D...
Page 2 Soldering Information Absolute Maximum Ratings (Note 1)  Infrared or Convection (20 sec) 235°C If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Off...
Page 3 IOUT Output Short Circuit Current Sourcing to V− VIN = 200 m V (Note 10) Sinking to V+ 7.5 VIN = –200 m V (Note 10) IS Supply Current per Amplifier LMP7717 0.95 1.30 LMP7718 per channel 1.1 1.5 SR Sle...
Page 4 VOUT Output Swing High RL = 2 kΩ to V+/2 LMP7717 LMP7718 RL = 10 kΩ to V+/2 m V from Output Swing Low LMP7717 rail RL = 2 kΩ to V+/2 LMP7718 RL = 10 kΩ to V+/2 IOUT Output Short Circuit Current Sourci...
Page 5 Connection Diagrams 5-Pin SOT23 (LMP7717) 8-Pin SOIC (LMP7717) 8-Pin SOIC/MSOP (LMP7718) Top View Top View Ordering Information Package Part Number Package Marking Transport Media NSC Drawing LMP7717M...
Page 6 Typical Performance Characteristics Unless otherwise specified, TA = 25°C, V– = 0, V+ = 5V, VS = V+ - V−, VCM = VS/2. TCVOS Distribution (LMP7717) Offset Voltage Distribution TCVOS Distribution (LMP77...
Page 7 VOS vs. VCM VOS vs. VCM VOS vs. Supply Voltage Slew Rate vs. Supply Voltage Input Bias Current vs. VCM Input Bias Current vs. VCM www.national.com
Page 8 Sourcing Current vs. Supply Voltage Sinking Current vs. Supply Voltage Sourcing Current vs. Output Voltage Sinking Current vs. Output Voltage Positive Output Swing vs. Supply Voltage Negative Output S...
Page 9 /L Positive Output Swing vs. Supply Voltage Negative Output Swing vs. Supply Voltage Positive Output Swing vs. Supply Voltage Negative Output Swing vs. Supply Voltage Input Referred Voltage Noise vs. ...
Page 10 THD+N vs. Frequency THD+N vs. Frequency THD+N vs. Peak-to-Peak Output Voltage (VOUT) THD+N vs. Peak-to-Peak Output Voltage (VOUT) Open Loop Gain and Phase Closed Loop Output Impedance vs. Frequency ww...
Page 11 /L Crosstalk Rejection Small Signal Transient Response, AV = +10 Large Signal Transient Response, AV = +10 Small Signal Transient Response, AV = +10 Large Signal Transient Response, AV = +10 PSRR vs. ...
Page 12 CMRR vs. Frequency Input Common Mode Capacitance vs. VCM www.national.com
Page 13 /L The LMP7717/LMP7718 require a gain of ±10 to be stable. Application Information However, with an external compensation network (a simple RC network) these parts can be stable with gains of ±1 and A...
Page 14 FIGURE 4. LMP7717 with Lead-Lag Compensation for Inverting Configuration To cover how to calculate the compensation network values it is necessary to introduce the term called the feedback factor FIGU...
Page 15 The circuit gain for Figure 4 at low frequencies is −RF/RIN, but F, the feedback factor is not equal to the circuit gain. The feedback factor is derived from feedback theory and is the same for both i...
Page 16 FIGURE 6. First Try at Compensation, Gain = −1 FIGURE 9. RC = 240Ω and C = 2.2 n F, Gain = −1 To summarize, the following steps were taken to compensate the LMP7717 for a gain of −1: 1. Values for Rc ...
Page 17 Non-Inverting Compensation /L than the fully compensated parts. Figure 13 shows the gain = For the non-inverting amp the same theory applies for estab- 1, or the buffer configuration, for these parts....
Page 18 FIGURE 16. Transimpedance Amplifier Figure 16 is the complete schematic for a transimpedance amplifier. Only the supply bypass capacitors are not shown. CD represents the photodiode capacitance which ...
Page 19 Using feedback theory, F = VA/VOUT, this becomes a voltage /L After a bit of algebraic manipulation the above equation re- divider giving the following equation: duces to: The noise gain is 1/F. Becau...
Page 20 pole is at 2.5 MHz. Figure 20 shows the response for a 1V /L output. FIGURE 19. Rise Time In Figure 18 the ringing and the hump during the on time is from the laser. The higher drive levels for the la...
Page 21 Physical Dimensions inches (millimeters) unless otherwise noted 5-Pin SOT23 NS Package Number MF05A 8-Pin SOIC NS Package Number M08A www.national.com
Page 22 8-Pin MSOP NS Package Number MUA08A www.national.com
Page 23 www.national.com
Page 24 /L z, re is io is .8 t, te ra ti li fi Notes For more National Semiconductor product information and proven design tools, visit the following Web sites at: Products Design Support Amplifiers www.natio...

Manual Details

Brand National
Pages 24
File Size 1021.32 KB
Published June 17, 2026
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Frequently Asked Questions

What total supply voltage range can the amplifier operate with?

The LMP7717/LMP7718 supports a supply voltage range of 1.8V to 5.5V.

How low is the noise density when operating at 1 kHz?

It has an input-referred voltage noise density of 5.8 nV/√Hz.

What are the available packages for the single (LMP7717) and dual (LMP7718) devices?

The LMP7717 is available in SOT23 or SOIC, while the LMP7718 is offered in SOIC or MSOP.

What are the extreme temperature limits for operation?

The product has a wide operating temperature range of −40°C to 125°C.