LP324N .

LP2902-N, LP324-N www.ti.com SNOSBX6C – SEPTEMBER 1999 – REVISED MARCH 2013 LP324-N/LP2902-N Micropower Quad Operational Amplifier Check for Samples: LP2902-N, LP324-N FEATURES DESCRIPTION • • • • • • • • The LP324-N series consists of four independent, high gain internally compensated micropower operational amplifiers. These amplifiers are specially suited for operation in battery systems while maintaining good input specifications, and extremely low supply current drain. In addition, the LP324-N has an input common mode range, and output source range which includes ground, making it ideal in single supply applications. 1 2 Low Supply Current: 85μA (typ) Low Offset Voltage: 2mV (typ) Low Input Bias Current: 2nA (typ) Input Vommon Mode to GND Interfaces to CMOS Logic Wide Supply Range: 3V < V+ < 32V Small Outline Package Available Pin-for-pin Compatible with LM324 These amplifiers are ideal in applications which include portable instrumentation, battery backup equipment, and other circuits which require good DC performance and low supply current. Connection Diagram Figure 1. 14-Lead SOIC See NFF0014A or D Package Figure 2. 14-Pin TSSOP See PW Package 1 2 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 1999–2013, Texas Instruments Incorporated LP2902-N, LP324-N SNOSBX6C – SEPTEMBER 1999 – REVISED MARCH 2013 www.ti.com Simplified Schematic These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. Absolute Maximum Ratings (1) (2) Supply Voltage Differential Input Voltage LP324-N 32V or ± 16V LP2902-N 26V or ± 13V LP324-N 32V LP2902-N Input Voltage (3) 26V LP324-N −0.3V to 32V LP2902-N −0.3V to 26V Output Short-Circuit to GND (One Amplifier) (4) V+ ≤ 15V and TA = 25°C (1) (2) (3) (4) (5) 2 Continuous ESD Susceptibility (5) ±500V “Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not ensure specific performance limits. If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and specifications. The input voltage is not allowed to go more than −0.3V below V− (GND) as this will turn on a parasitic transistor causing large currents to flow through the device. Short circuits from the output to GND can cause excessive heating and eventual destruction. The maximum sourcing output current is approximately 30 mA independent of the magnitude of V+. At values of supply voltage in excess of 15 VDC, continuous short-circuit to GND can exceed the power dissipation ratings (particularly at elevated temperatures) and cause eventual destruction. Destructive dissipation can result from simultaneous shorts on all amplifiers. The test circuit used consists of the human body model of 100 pF in series with 1500Ω. Submit Documentation Feedback Copyright © 1999–2013, Texas Instruments Incorporated Product Folder Links: LP2902-N LP324-N LP2902-N, LP324-N www.ti.com SNOSBX6C – SEPTEMBER 1999 – REVISED MARCH 2013 Operating Conditions TJMAX 150°C θJA (1) PW Package 154°C/W NFF014A Package 90°C/W D Package 140°C/W See (2) Operating Temp. Range −65°C≤TJ≤ 150°C Storage Temp. Range Soldering Information Wave Soldering(10sec) 260°C(lead temp.) Convection or Infrared(20sec) (1) (2) 235°C For operation at elevated temperatures, these devices must be derated based on a thermal resistance of θJA and TJ max. TJ = TA + θJAPD. The LP2902-N may be operated from −40°C ≤ TA ≤ +85°C, and the LP324-N may be operated from 0°C ≤ TA ≤ +70°C. Electrical Characteristics (1) Symbol Parameter LP2902-N (2) Conditions LP324-N Typ Tested Limit (3) Design Limit (4) Typ Tested Limit (3) Design Limit (4) Units Limits VOS Input Offset Voltage 2 4 10 2 4 9 mV (Max) IB Input Bias Current 2 20 40 2 10 20 nA (Max) IOS Input Offset Current 0.5 4 8 0.2 2 4 nA (Max) AVOL Voltage Gain RL = 10k to GND V+ = 30V 70 40 30 100 50 40 V/mV (Min) CMRR Common Mode Rej. Ratio V+ = 30V, 0V ≤ VCM VCM < V+− 1.5 90 80 75 90 80 75 dB (Min) PSRR Power Supply Rej. Ratio V+ = 5V to 30V 90 80 75 90 80 75 dB (Min) IS Supply Current RL = ∞ 85 150 250 85 150 250 μA (Max) VO Output Voltage Swing IL = 350μA to GND VCM = 0V 3.6 3.4 V+−1.9V 3.6 3.4 V+−1.9V V (Min) IL = 350μA to V+ VCM = 0V 0.7 0.8 1.0 0.7 0.8 1.0 V (Max) IOUT Source Output Source Current VO = 3V VIN (diff) = 1V 10 7 4 10 7 4 mA (Min) IOUT Sink Output Sink Current VO = 1.5V VIN (diff) = 1V 5 4 3 5 4 3 mA (Min) IOUT Sink Output Sink Current VO = 1.5V VCM = 0V 4 2 1 4 2 1 mA (Min) ISOURCE Output Short to GND VIN (diff) = 1V 20 25 35 35 20 25 35 35 mA (Max) ISINK Output Short to V+ VIN (diff) = 1V 15 30 45 15 30 45 mA (Max) VOS Drift 10 10 μV/C° IOS Drift 10 10 pA/C° GBW Gain Bandwidth Product 100 100 KHz SR Slew Rate 50 50 V/mS (1) (2) (3) (4) Boldface numbers apply at temperature extremes. All other numbers apply only at TA = TJ = 25°C, V+ = 5V, Vcm = V/2, and RL =100k connected to GND unless otherwise specified. The LP2902-N operating supply range is 3V to 26V, and is not tested above 26V. Specified and 100% production tested. Specified (but not 100% production tested) over the operating supply voltage range (3.0V to 32V for the LP324-N, LP324-N, and 3.0V to 26V for the LP2902-N), and the common mode range (0V to V+ −1.5V), unless otherwise specified. These limits are not used to calculate outgoing quality levels. Copyright © 1999–2013, Texas Instruments Incorporated Product Folder Links: LP2902-N LP324-N Submit Documentation Feedback 3 LP2902-N, LP324-N SNOSBX6C – SEPTEMBER 1999 – REVISED MARCH 2013 www.ti.com Typical Performance Curves 4 Input Voltage Range Input Current Figure 3. Figure 4. Supply Current Voltage Gain Figure 5. Figure 6. Open Loop Frequency Response Power Supply Rejection Ratio Figure 7. Figure 8. Submit Documentation Feedback Copyright © 1999–2013, Texas Instruments Incorporated Product Folder Links: LP2902-N LP324-N LP2902-N, LP324-N www.ti.com SNOSBX6C – SEPTEMBER 1999 – REVISED MARCH 2013 Typical Performance Curves (continued) Voltage Follower Pulse Response Voltage Follower Pulse Response (Small Signal) Figure 9. Figure 10. Common Mode Rejection Ratio Large Signal Frequency Response Figure 11. Figure 12. Output Characteristics Current Sourcing Output Characteristics Current Sinking Figure 13. Figure 14. Copyright © 1999–2013, Texas Instruments Incorporated Product Folder Links: LP2902-N LP324-N Submit Documentation Feedback 5 LP2902-N, LP324-N SNOSBX6C – SEPTEMBER 1999 – REVISED MARCH 2013 www.ti.com Typical Performance Curves (continued) Current Limiting Figure 15. APPLICATION HINTS The LP324-N series is a micro-power pin-for-pin equivalent to the LM324 op amps. Power supply current, input bias current, and input offset current have all been reduced by a factor of 10 over the LM324. Like its predecessor, the LP324-N series op amps can operate on single supply, have true-differential inputs, and remain in the linear mode with an input common-mode voltage of 0 VDC. The pinouts of the package have been designed to simplify PC board layouts. Inverting inputs are adjacent to outputs for all of the amplifiers and the outputs have also been placed at the corners of the package (pins 1, 7, 8, and 14). Precautions should be taken to insure that the power supply for the integrated circuit never becomes reversed in polarity or the unit is not inadvertently installed backwards in the test socket as an unlimited current surge through the resulting forward diode within the IC could destroy the unit. Large differential input voltages can be easily accommodated and, as input differential voltage protection diodes are not needed, no large input currents result from large differential input voltages. The differential input voltage may be larger than V+ without damaging the device. Protection should be provided to prevent the input voltages from going negative more than −0.3 VDC (at 25°C). An input clamp diode with a resistor to the IC input terminal can be used. The amplifiers have a class B output stage which allows the amplifiers to both source and sink output currents. In applications where crossover distortion is undesirable, a resistor should be used from the output of the amplifier to ground. The resistor biases the output into class A operation. The LP324-N has improved stability margin for driving capacitive loads. No special precautions are needed to drive loads in the 50 pF to 1000 pF range. It should be noted however that since the power supply current has been reduced by a factor of 10, so also has the slew rate and gain bandwidth product. This reduction can cause reduced performance in AC applications where the LM324 is being replaced by an LP324-N. Such situations usually occur when the LM324 has been operated near its power bandwidth. Output short circuits either to ground or to the positive power supply should be of short time duration. Units can be destroyed, not as a result of the short circuit current causing metal fusing, but rather due to the large increase in IC chip dissipation which will cause eventual failure due to excessive junction temperatures. For example: If all four amplifiers were simultaneously shorted to ground on a 10V supply the junction temperature would rise by 110°C. Exceeding the negative common-mode limit on either input will cause a reversal of phase to the output and force the amplifier to the corresponding high or low state. Exceeding the negative common-mode limit on both inputs will force the amplifier output to a high state. Exceeding the positive common-mode limit on a single input will not change the phase of the output. However, if both inputs exceed the limit, the output of the amplifier will be forced to a low state. In neither case does a latch occur since returning the input within the common mode range puts the input stage and thus the amplifier in a normal operating mode. 6 Submit Documentation Feedback Copyright © 1999–2013, Texas Instruments Incorporated Product Folder Links: LP2902-N LP324-N LP2902-N, LP324-N www.ti.com SNOSBX6C – SEPTEMBER 1999 – REVISED MARCH 2013 The circuits presented in the section on typical applications emphasize operation on only a single power supply voltage. If complementary power supplies are available, all of the standard op amp circuits can be used. In general, introducing a pseudo-ground (a bias voltage reference to V+/2) will allow operation above and below this value in single power supply systems. Many application circuits are shown which take advantage of the wide input common-mode voltage range which includes ground. In most cases, input biasing is not required and input voltages which range to ground can easily be accommodated. Figure 16. Driving CMOS Figure 17. Comparator with Hysteresis Figure 18. Non-Inverting Amplifier Figure 19. Adder/Subtractor Figure 20. Unity Gain Buffer Figure 21. Positive Integrator Copyright © 1999–2013, Texas Instruments Incorporated Product Folder Links: LP2902-N LP324-N Submit Documentation Feedback 7 LP2902-N, LP324-N SNOSBX6C – SEPTEMBER 1999 – REVISED MARCH 2013 www.ti.com Figure 22. Differential Integrator Figure 23. Howland Current Pump Figure 24. Bridge Current Amplifier Figure 25. μ Power Current Source Figure 26. Lowpass Filter 8 Submit Documentation Feedback Copyright © 1999–2013, Texas Instruments Incorporated Product Folder Links: LP2902-N LP324-N LP2902-N, LP324-N www.ti.com SNOSBX6C – SEPTEMBER 1999 – REVISED MARCH 2013 Figure 27. 1 kHz Bandpass Active Filter Figure 28. Band-Reject Filter Figure 29. Pulse Generator Figure 30. Window Comparator Copyright © 1999–2013, Texas Instruments Incorporated Product Folder Links: LP2902-N LP324-N Submit Documentation Feedback 9 LP2902-N, LP324-N SNOSBX6C – SEPTEMBER 1999 – REVISED MARCH 2013 www.ti.com REVISION HISTORY Changes from Revision B (March 2013) to Revision C • 10 Page Changed layout of National Data Sheet to TI format ............................................................................................................ 9 Submit Documentation Feedback Copyright © 1999–2013, Texas Instruments Incorporated Product Folder Links: LP2902-N LP324-N PACKAGE OPTION ADDENDUM www.ti.com 4-Aug-2022 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (°C) Device Marking (3) Samples (4/5) (6) LP2902M/NOPB ACTIVE SOIC D 14 55 RoHS & Green SN Level-1-260C-UNLIM -40 to 85 LP2902M Samples LP2902MX/NOPB ACTIVE SOIC D 14 2500 RoHS & Green SN Level-1-260C-UNLIM -40 to 85 LP2902M Samples LP2902N/NOPB ACTIVE PDIP N 14 25 RoHS & Green NIPDAU Level-1-NA-UNLIM -40 to 85 LP2902N Samples LP324M/NOPB ACTIVE SOIC D 14 55 RoHS & Green SN Level-1-260C-UNLIM 0 to 70 LP324M Samples LP324MT/NOPB ACTIVE TSSOP PW 14 94 RoHS & Green SN Level-1-260C-UNLIM 0 to 70 LP324 MT Samples LP324MTX/NOPB ACTIVE TSSOP PW 14 2500 RoHS & Green SN Level-1-260C-UNLIM 0 to 70 LP324 MT Samples LP324MX/NOPB ACTIVE SOIC D 14 2500 RoHS & Green SN Level-1-260C-UNLIM 0 to 70 LP324M Samples LP324N/NOPB ACTIVE PDIP N 14 25 RoHS & Green NIPDAU Level-1-NA-UNLIM 0 to 70 LP324N Samples (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of