LMP7717MAX NSC [National Semiconductor], LMP7717MAX Datasheet
LMP7717MAX
Related parts for LMP7717MAX
LMP7717MAX Summary of contents
Page 1
LMP7717/LMP7718 88 MHz, Precision, Low Noise, 1.8V CMOS Input, Decompensated Operational Amplifier General Description The LMP7717 (single) and the LMP7718 (dual) low noise, CMOS input operational amplifiers offer a low input voltage noise density of 5.8 nV/ while consuming only ...
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 (V + – ...
Page 3
I Output Short Circuit Current OUT I Supply Current per Amplifier S SR Slew Rate GBWP Gain Bandwidth Product e Input-Referred Voltage Noise n i Input-Referred Current Noise n THD+N Total Harmonic Distortion + Noise 5V Electrical Characteristics Unless otherwise ...
Page 4
V Output Swing High OUT Output Swing Low I Output Short Circuit Current OUT I Supply Current per Amplifier S SR Slew Rate GBWP Gain Bandwidth Product e Input-Referred Voltage Noise n i Input-Referred Current Noise n THD+N Total Harmonic ...
Page 5
... Connection Diagrams 5-Pin SOT23 (LMP7717) 30010801 Top View Ordering Information Package Part Number LMP7717MF 5-Pin SOT23 LMP7717MFE LMP7717MFX LMP7717MA LMP7717MAE LMP7717MAX 8-Pin SOIC LMP7718MA LMP7718MAE LMP7718MAX LMP7718MM 8-Pin MSOP LMP7718MME LMP7718MMX 8-Pin SOIC (LMP7717) 30010885 Top View Package Marking Transport Media ...
Page 6
Typical Performance Characteristics /2. + − TCV Distribution (LMP7717) OS TCV Distribution (LMP7717) OS Supply Current vs. Supply Voltage (LMP7717) www.national.com Unless otherwise specified, T Offset Voltage Distribution ...
Page 7
V vs 30010851 V vs. Supply Voltage OS 30010812 Input Bias Current vs 30010862 V vs Slew Rate vs. Supply Voltage Input Bias Current vs 30010811 30010852 CM 30010887 www.national.com ...
Page 8
Sourcing Current vs. Supply Voltage Sourcing Current vs. Output Voltage Positive Output Swing vs. Supply Voltage www.national.com Sinking Current vs. Supply Voltage 30010820 Sinking Current vs. Output Voltage 30010850 Negative Output Swing vs. Supply Voltage 30010817 8 30010819 30010854 30010815 ...
Page 9
Positive Output Swing vs. Supply Voltage Positive Output Swing vs. Supply Voltage Input Referred Voltage Noise vs. Frequency Negative Output Swing vs. Supply Voltage 30010816 Negative Output Swing vs. Supply Voltage 30010818 Overshoot and Undershoot vs. C 30010839 9 30010814 ...
Page 10
THD+N vs. Frequency THD+N vs. Peak-to-Peak Output Voltage (V Open Loop Gain and Phase www.national.com THD+N vs. Frequency 30010826 ) THD+N vs. Peak-to-Peak Output Voltage (V OUT 30010874 Closed Loop Output Impedance vs. Frequency 30010806 10 30010804 ) OUT 30010875 ...
Page 11
Crosstalk Rejection Large Signal Transient Response 30010855 Large Signal Transient Response 30010863 Small Signal Transient Response, A 30010880 = +10 Small Signal Transient Response +10 PSRR vs. Frequency 11 = +10 V 30010853 = ...
Page 12
CMRR vs. Frequency www.national.com Input Common Mode Capacitance vs. V 30010856 12 CM 30010876 ...
Page 13
Application Information ADVANTAGES OF THE LMP7717/LMP7718 Wide Bandwidth at Low Supply Current The LMP7717/LMP7718 are high performance op amps that provide a GBW of 88 MHz with a gain of 10 while drawing a low supply current of 1.15 mA. ...
Page 14
FIGURE 3. Open Loop Gain for Unity Gain Stable Op Amp and Decompensated Op Amp Having a higher frequency for the dominate pole will result in: 1. The DC open loop gain (A ) extending to a higher VOL frequency. ...
Page 15
The circuit gain for Figure 4 at low frequencies is −R 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 inverting and non-inverting configurations. ...
Page 16
FIGURE 6. First Try at Compensation, Gain = −1 FIGURE 7. C Increased to 2.2 nF, Gain = −1 Some over-compensation appears to be needed for the de- sired overshoot characteristics. Instead of intersecting the A curve at 18 dB, ...
Page 17
Non-Inverting Compensation For the non-inverting amp the same theory applies for estab- lishing the needed compensation. When setting the inverting configuration for a gain of −1, F has a value of 2. For the non- inverting configuration both F and ...
Page 18
FIGURE 15. LMP7715 Response Gain = +1 With no increase in power consumption the decompensated op amp offers faster speed than the compensated equivalent part . These examples used kΩ. This value is high F enough to ...
Page 19
Using feedback theory this becomes a voltage A OUT divider giving the following equation: The noise gain is 1/F. Because this is a differentiator circuit, a zero must be inserted. The location of the zero ...
Page 20
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 laser gave ring- ing in the light source as well as light changing from ...
Page 21
Physical Dimensions inches (millimeters) unless otherwise noted 5-Pin SOT23 NS Package Number MF05A 8-Pin SOIC NS Package Number M08A 21 www.national.com ...
Page 22
MSOP NS Package Number MUA08A 22 ...
Page 23
23 www.national.com ...
Page 24
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 ...