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National Semiconductor LM312D Micropower Op Amp IC Gold Ceramic 14-DIP 1975 New
National Semiconductor LM312D Micropower Op Amp IC Gold Ceramic 14-DIP 1975 New
Regular price
$12.95 USD
Regular price
Sale price
$12.95 USD
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3 in stock
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ITEM SPECIFICS
Brand: National Semiconductor
MPN: LM312D
Model: LM312D
Type: Operational Amplifier (Single, Micropower)
Series: LM112 / LM212 / LM312
Number of Channels: 1
Supply Voltage: ±18 V max
Power Dissipation: 500 mW
Input Offset Voltage: 2.0 mV typ / 7.5 mV max @ 25°C
Input Offset Current: 0.2 nA typ / 1 nA max @ 25°C
Input Bias Current: 1.5 nA typ / 7 nA max @ 25°C
Supply Current: 0.3 mA typ / 0.8 mA max
Large Signal Voltage Gain: 300 V/mV typ (25 V/mV min)
CMRR: 100 dB typ (80 dB min)
Compensation: Internal
Operating Temperature: 0°C to +70°C
Package / Case: 14-Pin Gold-Top Ceramic DIP
Mounting: Through Hole
Date Code: 515 (1975, week 15)
Condition: New
DESCRIPTION
This 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.
Features:
Micropower single op amp with 0.3 mA typical supply current
Very low input bias current: 1.5 nA typical, 7 nA max at 25°C
Low input offset current: 0.2 nA typical, 1 nA max at 25°C
High open-loop gain: 300 V/mV typical
100 dB typical CMRR; 96 dB typical supply rejection
±13 V min output swing into 10 kΩ at ±15 V supplies
Internally compensated, with provision for external overcompensation; overvoltage protection on the MOS compensation capacitor
±18 V max supply; 500 mW power dissipation; continuous output short-circuit protection
Gold-top ceramic DIP with gold leads and base plate
Markings: National Semiconductor "NS" logo, "515" and "LM312D", plus a pin-1 triangle
Date code 515: 1975, week 15
Unused; some leads are slightly bent from storage
Compatibility:
Direct 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.
Q&A
Q: What type of chip is the LM312?
A: It is a National Semiconductor micropower, internally compensated, single operational amplifier with very low input bias and offset currents.
Q: When was it made?
A: The date code 515 indicates 1975, week 15.
Q: Is it tested?
A: The item is sold as pictured. It has not been tested.
DISCLAIMER
Item is sold as pictured. Please review all photos carefully and compare part numbers before purchasing. Vintage stock; some leads show minor bends from storage.
LEGAL DISCLAIMER
American 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.
LM312D, 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
Thank you for shopping with American Industrial Parts Group!
Brand: National Semiconductor
MPN: LM312D
Model: LM312D
Type: Operational Amplifier (Single, Micropower)
Series: LM112 / LM212 / LM312
Number of Channels: 1
Supply Voltage: ±18 V max
Power Dissipation: 500 mW
Input Offset Voltage: 2.0 mV typ / 7.5 mV max @ 25°C
Input Offset Current: 0.2 nA typ / 1 nA max @ 25°C
Input Bias Current: 1.5 nA typ / 7 nA max @ 25°C
Supply Current: 0.3 mA typ / 0.8 mA max
Large Signal Voltage Gain: 300 V/mV typ (25 V/mV min)
CMRR: 100 dB typ (80 dB min)
Compensation: Internal
Operating Temperature: 0°C to +70°C
Package / Case: 14-Pin Gold-Top Ceramic DIP
Mounting: Through Hole
Date Code: 515 (1975, week 15)
Condition: New
DESCRIPTION
This 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.
Features:
Micropower single op amp with 0.3 mA typical supply current
Very low input bias current: 1.5 nA typical, 7 nA max at 25°C
Low input offset current: 0.2 nA typical, 1 nA max at 25°C
High open-loop gain: 300 V/mV typical
100 dB typical CMRR; 96 dB typical supply rejection
±13 V min output swing into 10 kΩ at ±15 V supplies
Internally compensated, with provision for external overcompensation; overvoltage protection on the MOS compensation capacitor
±18 V max supply; 500 mW power dissipation; continuous output short-circuit protection
Gold-top ceramic DIP with gold leads and base plate
Markings: National Semiconductor "NS" logo, "515" and "LM312D", plus a pin-1 triangle
Date code 515: 1975, week 15
Unused; some leads are slightly bent from storage
Compatibility:
Direct 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.
Q&A
Q: What type of chip is the LM312?
A: It is a National Semiconductor micropower, internally compensated, single operational amplifier with very low input bias and offset currents.
Q: When was it made?
A: The date code 515 indicates 1975, week 15.
Q: Is it tested?
A: The item is sold as pictured. It has not been tested.
DISCLAIMER
Item is sold as pictured. Please review all photos carefully and compare part numbers before purchasing. Vintage stock; some leads show minor bends from storage.
LEGAL DISCLAIMER
American 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.
LM312D, 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
Thank you for shopping with American Industrial Parts Group!
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