LM358SR

LM321/LM358/LM324 Low Cost, High Voltage Operational Amplifiers Features General Description ■ Wide Supply Range of 3V ~ 30V The LM321 (single), LM358 (dual) and LM324 ■ Large DC Voltage Gain: 100dB (quad) are low-power, low cost operational ■ Quiescent Current: 1mA amplifiers (op amps) operated on 3V to 30V ■ Gain Bandwidth Product: 1.1 MHz supplies. Despite their wide supply range, the ■ Slew Rate: 0.6V/µs LM358 ■ Unity Gain Stable performance and versatility. They have high ■ Input Common-mode Voltage Range differential Includes negative Rails common-mode input voltage range includes Differential Input Voltage Range Equal to ground, enabling direct sensing near ground. ■ family provides input excellent voltage overall capability. The the Power Supply Voltage ■ Packaging Available The LM358 family is unity gain stable and has a LM321 available in SOT23-5/SOP8 gain bandwidth product of 1.1MHz (typical). LM358 available in SOP8/MSOP8 They LM324 available in SOP14/TSSOP14 performance and can operate from a single provide high CMRR and PRSS supply voltage as well as dual supply voltages. Applications ■ Power Supplies and Mobile Chargers ■ Motor Control ■ AC Inverters ■ White Goods ■ Battery or Solar Powered Systems www.cosine-ic.com The LM358 family can be designed into a wide range of applications at an economical price without sacrificing basic performance. Rev1.0 Copyright@2018 Cosine Nanoelectronics Inc. All rights reserved The information provided here is believed to be accurate and reliable. Cosine Nanoelectronics assumes no reliability for inaccuracies and omissions. Specifications described and contained here are subjected to change without notice on the purpose of improving the design and performance. All of this information described herein should not be implied or granted for any third party. 1 LM321/LM358/LM324 1. Pin Configuration and Functions LM321 LM321 LM358 LM324 Pin Functions Name Description Note A bypass capacitor of 0.1μF as close to the part as possible should be placed between power supply pins or between supply pins and ground. Negative power supply If it is not connected to ground, bypass it with a or ground capacitor of 0.1μF as close to the part as possible. Inverting input of the amplifier. Voltage range of this Negative input pin can go from -Vs -0.3V to +Vs - 1V. Non-inverting input of the amplifier. This pin has the Positive input same voltage range as –IN. The output voltage range extends to within millivolts Output of each supply rail. +Vs Positive power supply -Vs -IN +IN OUT NC No connection 2. Package and Ordering Information Model Channel LM321 1 LM358 2 LM324 4 www.cosine-ic.com Order Number Package Package Option Marking Information LM321TR SOT23-5 Tape and Reel, 3000 C321HV LM321SR SOP-8 Tape and Reel, 3000 COS321HV LM358SR SOP-8 Tape and Reel, 3000 COS358HV LM358MR MSOP-8 Tape and Reel, 3000 COS358HV LM324SR SOP-14 Tape and Reel, 3000 COS324HV LM324TR TSSOP-14 Tape and Reel, 3000 COS324HV 2 LM321/LM358/LM324 3. Product Specification 3.1 Absolute Maximum Ratings (1) Parameter Power Supply: +Vs to -Vs Input Voltage Differential Input Voltage Input Current (DC) Storage Temperature Range Junction Temperature Operating Temperature Range ESD Susceptibility, HBM Rating Units 32 or ±16 V -0.3V to 32 V ±16 V 5 mA -65 to 150 °C 150 °C -40 to 125 °C 2000 V (1) Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. 3.2 Thermal Data Parameter Rating Unit Package Thermal Resistance 190 (SOT23-5) 206 (MSOP8) 155 (SOP8) 105 (TSSOP14) 82 (SOP14) °C/W Rating Unit 3 ~ 30 V -Vs ~ +Vs -1.5 V 0 to +70 °C 3.3 Recommended Operating Conditions Parameter DC Supply Voltage Input common-mode voltage range Operating ambient temperature www.cosine-ic.com 3 LM321/LM358/LM324 3.4 Electrical Characteristics (+VS=+5V, -VS=0, VCM=VS/2, TA=+25°C, RL=10kΩ to VS/2, unless otherwise noted) Parameter Symbol Conditions Min Typ Max Unit 2.0 5.0 mV Input Characteristics Input Offset Voltage VOS Input Offset Voltage Drift ΔVOS/ΔT Input Bias Current IB 45 250 nA Input Offset Current IOS 3 50 nA Common-Mode Voltage Range VCM +VS = 30V 0 +Vs -1.5 V Common-Mode Rejection Ratio CMRR VCM =0 to (+Vs -1.5) 65 Large Signal Voltage Gain AOL -40 to 125°C 7 μV/°C 90 dB VO=1 to11V, +VS = 15V, RL= 2 kΩ 100 V/mV +VS = 30V, RL=2kΩ 40 Output Characteristics Output Voltage Swing from Rail VOH VOL Output current Source ISR Output Sink Current ISK Short-Circuit Current to Ground ISC 60 mA +VS = 30V, RL=10kΩ 26 +VS = 5V, RL=10kΩ 27 28 20 40 mA 10 15 mA 12 50 μA +VS =15V, Vo=2V, Vid=1V +VS =15V, Vo=2V, Vid= -1V +VS =15V, Vo=0.2V, Vid= -1V +VS =15V 40 60 mA 30 V Power Supply Operating Voltage Range Vs Power Supply Rejection Ratio PSRR Quiescent Current / Amplifier IQ 3 VS = +1.8V to +5.5V 80 100 dB VS = +30V 1.0 2.0 mA VS = +5V 0.5 1.2 mA Dynamic Performance Gain Bandwidth Product GBWP G=+1 1.1 MHz Slew Rate SR G = +1 , 2V Output Step 0.6 V/μs www.cosine-ic.com 4 LM321/LM358/LM324 4.0 Application Notes Driving Capacitive Loads Driving large capacitive loads can cause stability problems for voltage feedback op amps. As the load capacitance increases, the feedback loop’s phase margin decreases, and the closed loop bandwidth is reduced. This produces gain peaking in the frequency response, with overshoot and ringing in the step response. A unity gain buffer (G = +1) is the most sensitive to capacitive loads, but all gains show the same general behavior. When driving large capacitive loads with these op amps (e.g., > 100 pF when G = +1), a small series resistor at the output (RISO in Figure 1) improves the feedback loop’s phase margin (stability) by making the output load resistive at higher frequencies. It does not, however, improve the bandwidth. To select RISO, check the frequency response peaking (or step response overshoot) on the bench. If the response is reasonable, you do not need RISO. Otherwise, start RISO at 1 kΩ and modify its value until the response is reasonable. Figure 1. Indirectly Driving Heavy Capacitive Load An improvement circuit is shown in Figure 2. It provides DC accuracy as well as AC stability. RF provides the DC accuracy by connecting the inverting signal with the output, CF and RISO serve to counteract the loss of phase margin by feeding the high frequency component of the output signal back to the amplifier’s inverting input, thereby preserving phase margin in the overall feedback loop. Figure 2. Indirectly Driving Heavy Capacitive Load with DC Accuracy www.cosine-ic.com 5 LM321/LM358/LM324 For noninverting configuration, there are two others ways to increase the phase margin: (a) by increasing the amplifier’s gain or (b) by placing a capacitor in parallel with the feedback resistor to counteract the parasitic capacitance associated with inverting node, as shown in Figure 3. Figure 3. Adding a Feedback Capacitor in the Noninverting Configuration Power-Supply Bypassing and Layout The LM321/2/4 operates from a single +3V to +30V supply or dual ±1.5V to ±15V supplies. For single-supply operation, bypass the power supply +Vs with a 0.1μF ceramic capacitor which should be placed close to the +Vs pin. For dual-supply operation, both the +Vs and the -Vs supplies should be bypassed to ground with separate 0.1μF ceramic capacitors. 2.2μF tantalum capacitor can be added for better performance. The length of the current path is directly proportional to the magnitude of parasitic inductances and thus the high frequency impedance of the path. High speed currents in an inductive ground return create an unwanted voltage noise. Broad ground plane areas will reduce the parasitic inductance. Thus a ground plane layer is important for high speed circuit design. Typical Application Circuits Differential Amplifier The circuit shown in Figure 4 performs the differential function. If the resistors ratios are equal (R4 / R3 = R2 / R1), then VOUT = (VIP – VIN) × R2 / R1 + VREF. www.cosine-ic.com 6 LM321/LM358/LM324 Figure 4. Differential Amplifier Low Pass Active Filter When receiving low-level signals, limiting the bandwidth of the incoming signals into the system is often required. The simplest way to establish this limited bandwidth is to place an RC filter at the noninverting terminal of the amplifier. If even more attenuation is needed, a multiple pole filter is required. The Sallen-Key filter can be used for this task, as Figure 5. For best results, the amplifier should have a bandwidth that is 8 to 10 times the filter frequency bandwidth. Failure to follow this guideline can result in reduction of phase margin. The large values of feedback resistors can couple with parasitic capacitance and cause undesired effects such as ringing or oscillation in high-speed amplifiers. Keep resistors value as low as possible and consistent with output loading consideration. Figure 5. Two-Pole Low-Pass Sallen-Key Active Filter www.cosine-ic.com 7 LM321/LM358/LM324 5. Package Information 5.1 SOT23-5 (Package Outline Dimensions) 5.2 SOP8 (Package Outline Dimensions) www.cosine-ic.com 8 LM321/LM358/LM324 5.3 MSOP8 (Package Outline Dimensions) 5.4 SOP14 (Package Outline Dimensions) www.cosine-ic.com 9 LM321/LM358/LM324 5.5 TSSOP14 (Package Outline Dimensions) 6. Related Parts Part Number Description COS6041/2/4 24kHz, 0.5μA, RRIO Op Amps, 1.8 to 5.5V Supply COS1347/2347/4347 350kHz, 15μA, RRIO Op Amps, 1.8 to 5.5V Supply LM321/2/4 1.5MHz, 50μA, RRIO Op Amps, 1.8 to 5.5V Supply COS1314/2314/4314 3MHz, 150μA, RRIO Op Amps, 1.8 to 5.5V Supply COS821/2/4 5MHz, 300μA, RRIO Op Amps, 1.8 to 5.5V Supply COS1374/2374/4374 7MHz, 500μA, RRIO Op Amps, 1.8 to 5.5V Supply COS721/2/4 10MHz, 650μA, RRIO Op Amps, 2.1 to 5.5V Supply COS1333/2333/4333 0.35MHz, 18μA, RRIO Op Amps, 1.8 to 5.5V Supply, Zero Drift, Vos