{"product_id":"national-semiconductor-lm312d-micropower-op-amp-ic-gold-ceramic-14-dip-1975-new","title":"National Semiconductor LM312D Micropower Op Amp IC Gold Ceramic 14-DIP 1975 New","description":"ITEM SPECIFICS\u003cbr\u003eBrand: National Semiconductor\u003cbr\u003eMPN: LM312D\u003cbr\u003eModel: LM312D\u003cbr\u003eType: Operational Amplifier (Single, Micropower)\u003cbr\u003eSeries: LM112 \/ LM212 \/ LM312\u003cbr\u003eNumber of Channels: 1\u003cbr\u003eSupply Voltage: ±18 V max\u003cbr\u003ePower Dissipation: 500 mW\u003cbr\u003eInput Offset Voltage: 2.0 mV typ \/ 7.5 mV max @ 25°C\u003cbr\u003eInput Offset Current: 0.2 nA typ \/ 1 nA max @ 25°C\u003cbr\u003eInput Bias Current: 1.5 nA typ \/ 7 nA max @ 25°C\u003cbr\u003eSupply Current: 0.3 mA typ \/ 0.8 mA max\u003cbr\u003eLarge Signal Voltage Gain: 300 V\/mV typ (25 V\/mV min)\u003cbr\u003eCMRR: 100 dB typ (80 dB min)\u003cbr\u003eCompensation: Internal\u003cbr\u003eOperating Temperature: 0°C to +70°C\u003cbr\u003ePackage \/ Case: 14-Pin Gold-Top Ceramic DIP\u003cbr\u003eMounting: Through Hole\u003cbr\u003eDate Code: 515 (1975, week 15)\u003cbr\u003eCondition: New\u003cbr\u003e\u003cbr\u003eDESCRIPTION\u003cbr\u003eThis is a vintage National Semiconductor LM312D micropower operational amplifier in a 14-pin ceramic DIP with a gold lid, a gold base plate and gold leads. The LM312 is the commercial-temperature (0°C to +70°C) version of National's LM112\/LM212\/LM312 series. The series combines very low offset voltage and input current with internal frequency compensation, and its offset can be adjusted with a single potentiometer.\u003cbr\u003e\u003cbr\u003eFeatures:\u003cbr\u003eMicropower single op amp with 0.3 mA typical supply current\u003cbr\u003eVery low input bias current: 1.5 nA typical, 7 nA max at 25°C\u003cbr\u003eLow input offset current: 0.2 nA typical, 1 nA max at 25°C\u003cbr\u003eHigh open-loop gain: 300 V\/mV typical\u003cbr\u003e100 dB typical CMRR; 96 dB typical supply rejection\u003cbr\u003e±13 V min output swing into 10 kΩ at ±15 V supplies\u003cbr\u003eInternally compensated, with provision for external overcompensation; overvoltage protection on the MOS compensation capacitor\u003cbr\u003e±18 V max supply; 500 mW power dissipation; continuous output short-circuit protection\u003cbr\u003eGold-top ceramic DIP with gold leads and base plate\u003cbr\u003eMarkings: National Semiconductor \"NS\" logo, \"515\" and \"LM312D\", plus a pin-1 triangle\u003cbr\u003eDate code 515: 1975, week 15\u003cbr\u003eUnused; some leads are slightly bent from storage\u003cbr\u003e\u003cbr\u003eCompatibility:\u003cbr\u003eDirect replacement for the National Semiconductor LM312D. It shares the same die as the LM312H metal-can version, so check the package pinout before substituting one for the other. The LM112 and LM212 are the military- and industrial-temperature grades of the same amplifier.\u003cbr\u003e\u003cbr\u003eQ\u0026amp;A\u003cbr\u003eQ: What type of chip is the LM312?\u003cbr\u003eA: It is a National Semiconductor micropower, internally compensated, single operational amplifier with very low input bias and offset currents.\u003cbr\u003eQ: When was it made?\u003cbr\u003eA: The date code 515 indicates 1975, week 15.\u003cbr\u003eQ: Is it tested?\u003cbr\u003eA: The item is sold as pictured. It has not been tested.\u003cbr\u003e\u003cbr\u003eDISCLAIMER\u003cbr\u003eItem is sold as pictured. Please review all photos carefully and compare part numbers before purchasing. Vintage stock; some leads show minor bends from storage.\u003cbr\u003e\u003cbr\u003eLEGAL DISCLAIMER\u003cbr\u003eAmerican Industrial Parts Group is not an authorized distributor, reseller, or representative of National Semiconductor or Texas Instruments. All product names, trademarks, brands, and logos are the property of their respective owners and are used for identification purposes only. As an independent reseller, the original manufacturer warranty does not apply.\u003cbr\u003e\u003cbr\u003eLM312D, LM312, National Semiconductor LM312, LM312H, LM112, LM212, op amp IC, ic op amp, op-amp ic, micropower operational amplifier, gold ceramic IC, gold top DIP, vintage National Semiconductor, 1975 IC, collectible gold chip\u003cbr\u003e\u003cbr\u003eThank you for shopping with American Industrial Parts Group!","brand":"National Semiconductor","offers":[{"title":"Default Title","offer_id":49918101356699,"sku":"NS-LM312D-N","price":12.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/0857\/7435\/files\/national-semiconductor-lm312d-op-amp-ic-gold-ceramic-dip-1-american-industrial-parts-group.png?v=1792858167","url":"https:\/\/americanindustrialpartsgroup.com\/products\/national-semiconductor-lm312d-micropower-op-amp-ic-gold-ceramic-14-dip-1975-new","provider":"American Industrial Parts Group","version":"1.0","type":"link"}