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LMV422MM Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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LMV422MM Datasheet(HTML) 1 Page - National Semiconductor (TI) |
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1 / 10 page  LMV422 Dual Rail-to-Rail Output Operational Amplifier with Power Select General Description The LMV422 dual rail-to-rail output amplifier offers a power select pin (PS) that allows the user to select one of two power modes depending on the level of performance de- sired. This is ideal for AC coupled circuits where the circuit needs to be kept active to maintain a quiescent charge on the coupling capacitors with minimum power consumption. For portable applications, the LMV422 operates in low power mode consuming only 2 µA of supply current per channel at a bandwidth of 27 kHz. This allows the user to reduce the power consumption of an amplifier while maintaining an active circuit. For additional bandwidth and output current drive the amplifier can be switched to full power mode with 8 MHz bandwidth while consuming only 400 µA per channel. The LMV422 features a rail-to-rail output voltage swing in addition to an input common mode range that includes ground. The LMV422 is designed for closed loop gains of plus two (or minus one) or greater. The LMV422 is offered in 10-Pin MSOP miniature package to ease the adoption in applications where board area is at a premium. Features n Supply voltage 2.7V to 5.5V n Supply current per channel — Low power mode 2 µA — Full power mode 400 µA n Input common mode voltage range −0.3V to 3.8V n CMRR 85 dB n Output voltage swing Rail-to-Rail n Input offset voltage 1 mV n Bandwidth — Low power mode 27 kHz — Full power mode 8 MHz n Stable for A V ≥ +2 or A V ≤ −1 Applications n AC coupled circuits n Portable instrumentation n Smoke detectors Typical Application 20109835 AC Coupled Application February 2005 © 2005 National Semiconductor Corporation DS201098 www.national.com |
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