Part # LM212 datasheet

Part Manufacturer: National Semiconductor

National Semiconductor

Part Description: LM112 LM212 LM312 Operational Amplifiers

Part Details:

LM112LM212LM312 September 1992 LM112 LM212 LM312 Operational Amplifiers General DescriptionThe LM112 series are micropower operational amplifiers known to suffer catastrophic failure caused by short-dura- with very low offset-voltage and input-current errors at tion overvoltage spikes on the supplies Unlike other inter- least a factor of ten better than FET amplifiers over a nally-compensated IC amplifiers it is possible to overcom- b55 C to a125 C temperature range Similar to the LM108 pensate with an external capacitor to increase stability mar- series that also use supergain transistors they differ in that gin Operational they include internal frequency compensation and have pro- The LM212 is identical to the LM112 except that the LM212 visions for offset adjustment with a single potentiometer has its performance guaranteed over a b25 C to a85 C These amplifiers will operate on supply voltages of g2V to temperature range instead of b55 C to a125 C The g 20V drawing a quiescent current of only 300 mA Per- LM312 is guaranteed over a 0 C to a70 C temperature formance is not appreciably affected over this range of volt- range ages so operation from unregulated power sources is easilyaccomplished They can also be run from a single supply Features like the 5V used for digital circuits Y Maximum input bias current of 3 nA over temperature The LM112 series are the first IC amplifiers to improve reli- Y Offset current less than 400 pA over temperature Amplifiers ability by including overvoltage protection for the MOS com- Y Low noise pensation capacitor Without this feature IC s have been Y Guaranteed drift specifications Connection Diagram Metal Can Package TL H 7751 ­ 4 Top View Order Number LM112H LM212H LM312H or LM112H 883 See NS Package Number H08C Auxiliary Circuits Offset Balancing Overcompensation for Greater Stability Margin TL H 7751 ­ 2 TL H 7751 ­ 3 C1995 National Semiconductor Corporation TL H 7751 RRD-B30M115 Printed in U S A

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LM212.pdf Datasheet