LP324/LP2902 Micropower Quad Operational Amplifier LP324 series c

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LP324/LP2902 Micropower Quad Operational Amplifier LP324 series c

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LP324/LP2902 Micropower Quad Operational Amplifier
LP324/LP2902 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: 85µA (typ) offset voltage: (typ) input bias current: (typ) Input common mode Interfaces CMOS logic Wide supply range: Small Outline Package available Pin-for-pin compatible with LM324
Connection Diagrams
Dual-In-Line 14-Pin TSSOP
00856201
Order Number LP324M LP2902M Package Number M14A Order Number LP324N LP2902N Package Number N14A
00856240
Order Number LP324MT LP324MTX Package Number MTC14
Simplified Schematic
00856202
2001 National Semiconductor Corporation
DS008562
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LP324/LP2902
Absolute Maximum Ratings
(Note
Military/Aerospace specified devices required, please contact National Semiconductor Sales Office/ Distributors availability specifications. Supply Voltage LP324 LP2902 Differential Input Voltage LP324 LP2902 Input Voltage (Note LP324 LP2902 Output Short-Circuit (One Amplifier) (Note -0.3V -0.3V Continuous
25°C Susceptibility (Note
500V
Operating Conditions
TJMAX (Note Package Package Package Operating Temp. Range Storage Temp. Range Soldering Information Wave Soldering(10sec) Convection Infrared(20sec) 260°C(lead temp.) 235°C 154°C/W 90°C/W 140°C/W (Note -65°CTJ 150°C 150°C
Electrical Characteristics (Note
LP2902 (Note Symbol Parameter Conditions AVOL CMRR PSRR Input Offset Voltage Input Bias Current Input Offset Current Voltage Gain Common Mode Rej. Ratio Power Supply Rej. Ratio Supply Current Output Voltage Swing 30V, 350µA 350µA IOUT Source IOUT Sink IOUT Sink Output Source Current Output Sink Current Output Sink Current (diff) 1.5V (diff) 1.5V (diff) (diff) Tested Limit (Note Design Limit (Note V+-1.9V LP324 Tested Limit (Note Design Limit (Note V+-1.9V (Max) (Max) (Max) V/mV (Min) (Min) (Min) (Max) (Min) (Max) (Min) (Min) (Min) (Max) (Max) µV/C° pA/C° Units Limits
ISOURCE Output Short ISINK Drift Drift
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Output Short
LP324/LP2902
Electrical Characteristics (Note
Symbol Parameter Conditions
(Continued) LP2902 (Note Tested Limit (Note Design Limit (Note LP324 Tested Limit (Note Design Limit (Note V/mS Units Limits
Gain Bandwidth Product Slew Rate
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.
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LP324/LP2902
Typical Performance Curves
Input Voltage Range Input Current
00856221
00856222
Supply Current
Voltage Gain
00856223
00856224
Open Loop Frequency Response
Power Supply Rejection Ratio
00856225
00856226
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LP324/LP2902
Typical Performance Curves
Voltage Follower Pulse Response
(Continued) Voltage Follower Pulse Response (Small Signal)
00856227
00856228
Common Mode Rejection Ratio
Large Signal Frequency Response
00856229
00856230
Output Characteristics Current Sourcing
Output Characteristics Current Sinking
00856231
00856232
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LP324/LP2902
Typical Performance Curves
(Continued) Current Limiting
00856233
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. 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
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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. 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. Driving CMOS
00856203
LP324/LP2902
Application Hints
(Continued)
Differential Integrator
Comparator with Hysteresis
00856206
Non-Inverting Amplifier
00856209
Howland Current Pump
00856204
Adder/Subtractor
00856210
Bridge Current Amplifier
00856207
Unity Gain Buffer
00856205
Positive Integrator
00856211
Power Current Source
00856208
00856212
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LP324/LP2902
Application Hints
(Continued) Lowpass Filter
00856213
Bandpass Active Filter
00856214
Band-Reject Filter
00856215
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LP324/LP2902
Application Hints
(Continued) Pulse Generator
00856216
Window Comparator
00856217
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LP324/LP2902
Physical Dimensions
unless otherwise noted
inches (millimeters)
S.O. Package Order Number LP324M, LP324MX, LP2902M LP2902MX Package Number M14A
Dual-in-Line Package Order Number LP324N LP2902N Package Number N14A
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LP324/LP2902 Micropower Quad Operational Amplifier
Physical Dimensions
inches (millimeters) unless otherwise noted (Continued)
14-Pin TSSOP Order Number LP324MT LP324MTX Package Number MTC14
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 Email: support@nsc.com National Semiconductor Europe Fax: 180-530 Email: europe.support@nsc.com Deutsch Tel: 9508 6208 English Tel: 2171 Tel: 8790
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: ap.support@nsc.com
National Semiconductor Japan Ltd. Tel: 81-3-5639-7560 Fax: 81-3-5639-7507
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National does assume responsibility circuitry described, circuit patent licenses implied National reserves right time without notice change said circuitry specifications.

LP324/LP2902 Micropower Quad Operational Amplifier LP324 series c

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