LP2902/LP324 Micropower Quad Operational Amplifier LP324 series c

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LP2902/LP324 Micropower Quad Operational Amplifier LP324 series c

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LP2902/LP324 Micropower Quad Operational Amplifier
LP2902/LP324 Micropower Quad Operational Amplifier
LP324 series consists four independent, high gain internally compensated micropower operational amplifiers. These amplifiers specially suited operation battery systems while maintaining good input specifications, extremely supply current drain. addition, LP324 input common mode range, output source range which includes ground, making ideal single supply applications. These amplifiers ideal applications which include portable instrumentation, battery backup equipment, other circuits which require good performance supply current.
Features
supply current: (max) offset voltage: (max) input bias current: (max) Input common mode Interfaces CMOS logic Wide supply range: Small Outline Package available Pin-for-pin compatible with LM324
Connection Diagram
Dual-In-Line
Simplified Schematic
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Order Number LP324M LP2902M Package Number M14A Order Number LP324N LP2902N Package Number N14A
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1999 National Semiconductor Corporation
DS008562
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Absolute Maximum Ratings (Note
Military/Aerospace specified devices required, please contact National Semiconductor Sales Office/ Distributors availability specifications. Supply Voltage LP2902 Differential Input Voltage LP2902 Input Voltage (Note LP2902 Output Short-Circuit (One Amplifier) (Note 25°C Susceptibility (Note -0.3V -0.3V Continuous
Operating Conditions
Power Dissipation (Note Operating Temp. Range Storage Temp. Range Soldering Information sec.) Vapor Phase sec.) Infrared sec.) Package
150°C 150°C 90°C/W 140°C/W (Note (Note -65°C 150°C 300°C 260°C 215°C 220°C
500V
Electrical Characteristics (Note
LP2902 (Note Symbol Parameter Conditions Avol Input Offset Voltage Input Bias Current Input Offset Current Voltage Gain CMRR Common Mode Rej. Ratio PSRR Power Supply Rej. Ratio Supply Current Output Voltage Swing GND. Iout Source Iout Sink Iout Sink Isource Isink Output Source Current Output Sink Current Output Sink Current Output Short Output Short (diff) (diff) (Max) (Max) µV/C° 1.5V (Min) 1.5V (diff) (Min) (diff) (Min) (Max) V+-1.9V V+-1.9V (Max) (Min) (Min) (Min) Tested Limit (Note Design Limit (Note LP324 Tested Limit (Note Design Limit (Note (Max) (Max) (Max) V/mV (Min) Units Limits
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Electrical Characteristics (Note
Symbol Parameter Conditions
(Continued)
LP2902 (Note Tested Design Limit (Note LP324 Tested Limit (Note Design Limit (Note pA/C° Units Limits
Drift Drift Gain Bandwidth Product Slew Rate
Limit (Note
V/mS
Note "Absolute Maximum Ratings" indicate limits beyond which damage device occur. Operating Ratings indicate conditions which device functional, guarantee specific performance limits. Note input voltage allowed more than -0.3V below (GND) this will turn parasitic transistor causing large currents flow through device. Note Short circuits from output cause excessive heating eventual destruction. maximum sourcing output current approximately independent magnitude values supply voltage excess VDC, continuous short-circuit exceed power dissipation ratings (particularly elevated temperatures) cause eventual destruction. Destructive dissipation result from simultaneous shorts amplifiers. Note operation elevated temperatures, these devices must derated based thermal resistance max. jaPD. Note LP2902 operated from -40°C +85°C, LP324 operated from +70°C. Note Boldface numbers apply temperature extremes. other numbers apply only 25°C, V/2, 100k connected unless otherwise specified. Note Guaranteed 100% production tested. Note Guaranteed (but 100% production tested) over operating supply voltage range (3.0V LP324, LP324, 3.0V LP2902), common mode range -1.5V), unless otherwise specified. These limits used calculate outgoing quality levels. Note LP2902 operating supply range 26V, tested above 26V. Note test circuit used consists human body model series with 1500.
Typical Performance Curves
Input Voltage Range Input Current Supply Current
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Voltage Gain
Open Loop Frequency Response
Power Supply Rejection Ratio
DS008562-24 DS008562-25 DS008562-26
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Typical Performance Curves
Voltage Follower Pulse Response
(Continued)
Voltage Follower Pulse Response (Small Signal)
Common Mode Rejection Ratio
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Large Signal Frequency Response
Output Characteristics Current Sourcing
Output Characteristics Current Sinking
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Current Limiting
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Application Hints
LP324 series micro-power pin-for-pin equivalent LM324 amps. Power supply current, input bias current, input offset current have been reduced factor over LM324. Like predecessor, LP324 series amps operate single supply, have true-differential inputs, remain linear mode with input common-mode voltage VDC. pinouts package have been designed simplify board layouts. Inverting inputs adjacent outputs amplifiers outputs have also been placed corners package (pins 14).
Precautions should taken insure that power supply integrated circuit never becomes reversed polarity unit inadvertently installed backwards test socket unlimited current surge through resulting forward diode within could destroy unit. Large differential input voltages easily accommodated and, input differential voltage protection diodes needed, large input currents result from large differential input voltages. differential input voltage larger than without damaging device. Protection should provided prevent input voltages from going negative more than -0.3 25°C). input clamp diode with resistor input terminal used.
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Application Hints
(Continued)
amplifiers have class output stage which allows amplifiers both source sink output currents. applications where crossover distortion undesirable, resistor should used from output amplifier ground. resistor biases output into class operation. LP324 improved stability margin driving capacitive loads. special precautions needed drive loads 1000 range. should noted however that since power supply current been reduced factor also slew rate gain bandwidth product. This reduction cause reduced performance applications where LM324 being replaced LP324. Such situations usually occur when LM324 been operated near power bandwidth. Output short circuits either ground positive power supply should short time duration. Units destroyed, result short circuit current causing metal fusing, rather large increase chip dissipation which will cause eventual failure excessive junction temperatures. example: four amplifiers were simultaneously shorted ground supply junction temperature would rise 110°C. Driving CMOS
Exceeding negative common-mode limit either input will cause reversal phase output force amplifier corresponding high state. Exceeding negative common-mode limit both inputs will force amplifier output high state. Exceeding positive common-mode limit single input will change phase output. However, both inputs exceed limit, output amplifier will forced state. neither case does latch occur since returning input within common mode range puts input stage thus amplifier normal operating mode. circuits presented section typical applications emphasize operation only single power supply voltage. complementary power supplies available, standard circuits used. general, introducing pseudo-ground bias voltage reference V+/2) will allow operation above below this value single power supply systems. Many application circuits shown which take advantage wide input common-mode voltage range which includes ground. most cases, input biasing required input voltages which range ground easily accommodated.
Comparator with Hysteresis
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Non-Inverting Amplifier
Adder/Subtractor
DS008562-4 DS008562-7
Unity Gain Buffer
Positive Integrator
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Application Hints
(Continued) Howland Current Pump
Differential Integrator
DS008562-9 DS008562-10
Bridge Current Amplifier
Power Current Source
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Lowpass Filter
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Application Hints
(Continued) Bandpass Active Filter
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Band-Reject Filter
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Pulse Generator
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Application Hints
(Continued) Window Comparator
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Physical Dimensions
inches (millimeters) unless otherwise noted
S.O. Package Order Number LP324M LP2902M Package Number M14A
Dual-in-Line Package Order Number LP324N LP2902N Package Number N14A
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LP2902/LP324 Micropower Quad Operational Amplifier
Notes
LIFE SUPPORT POLICY NATIONAL'S PRODUCTS AUTHORIZED CRITICAL COMPONENTS LIFE SUPPORT DEVICES SYSTEMS WITHOUT EXPRESS WRITTEN APPROVAL PRESIDENT GENERAL COUNSEL NATIONAL SEMICONDUCTOR CORPORATION. used herein: Life support devices systems devices systems which, intended surgical implant into body, support sustain life, whose failure perform when properly used accordance with instructions provided labeling, reasonably expected result significant injury user.
National Semiconductor Corporation Americas Tel: 1-800-272-9959 Fax: 1-800-737-7018 Email: support@nsc.com www.national.com National Semiconductor Europe Fax: 80-530 Email: europe.support@nsc.com Deutsch Tel: 80-530 English Tel: 80-532 Tel: 80-532 Italiano Tel: 80-534
critical component component life support device system whose failure perform reasonably expected cause failure life support device system, affect safety effectiveness.
National Semiconductor Asia Pacific Customer Response Group Tel: 65-2544466 Fax: 65-2504466 Email: sea.support@nsc.com
National Semiconductor Japan Ltd. Tel: 81-3-5639-7560 Fax: 81-3-5639-7507
National does assume responsibility circuitry described, circuit patent licenses implied National reserves right time without notice change said circuitry specifications.

LP2902/LP324 Micropower Quad Operational Amplifier LP324 series c

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