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OPA121 Datasheet(PDF) 1 Page - Texas Instruments |
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OPA121 Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 15 page  Low Cost Precision Difet ® OPERATIONAL AMPLIFIER Difet ®, Burr-Brown Corp. BIFET®, National Semiconductor Corp. OPA121 FEATURES q LOW NOISE: 6nV/ √Hz typ at 10kHz q LOW BIAS CURRENT: 5pA max q LOW OFFSET: 2mV max q LOW DRIFT: 3 µV/°C typ q HIGH OPEN-LOOP GAIN: 110dB min q HIGH COMMON-MODE REJECTION: 86dB min Noise-Free Cascode* Ω 10k Trim 1 5 3 2 +In –In Case (TO-99) and Substrate Output OPA121 Simplified Circuit +V CC –VCC 8 7 6 4 2k Ω Ω 10k 2k Ω 2k Ω 2k Ω *Patented Trim DESCRIPTION The OPA121 is a precision monolithic dielectrically- isolated FET (Difet ®) operational amplifier. Out- standing performance characteristics are now available for low-cost applications. Noise, bias current, voltage offset, drift, open-loop gain, common-mode rejection, and power supply rejection are superior to BIFET® amplifiers. Very low bias current is obtained by dielectric isolation with on-chip guarding. Laser-trimming of thin-film resistors gives very low offset and drift. Extremely low noise is achieved with new circuit design techniques (patented). A new cascode design allows high precision input specifica- tions and reduced susceptibility to flicker noise. Standard 741 pin configuration allows upgrading of existing designs to higher performance levels. APPLICATIONS q OPTOELECTRONICS q DATA ACQUISITION q TEST EQUIPMENT q MEDICAL EQUIPMENT q RADIATION HARD EQUIPMENT ® International Airport Industrial Park • Mailing Address: PO Box 11400 • Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd. • Tucson, AZ 85706 Tel: (520) 746-1111 • Twx: 910-952-1111 • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132 © 1984 Burr-Brown Corporation PDS-539F Printed in U.S.A. September, 1993 SBOS139 |
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