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INA120BP Datasheet(PDF) 1 Page - Texas Instruments |
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INA120BP Datasheet(HTML) 1 Page - Texas Instruments |
1 / 12 page 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 INA120 FEATURES q LOW OFFSET VOLTAGE: 25 µV max q LOW OFFSET VOLTAGE DRIFT: 0.25 µV/°C max q PIN-STRAPPED GAINS: 1, 10, 100, 1000 q LOW GAIN DRIFT: 30ppm/ °C max at G = 100 q HIGH COMMON-MODE REJECTION: 106dB at 60Hz, G = 100 APPLICATIONS q BRIDGE AMPLIFIER q THERMOCOUPLE AMPLIFIER q RTD SENSOR AMPLIFIER q MEDICAL INSTRUMENTATION q DATA ACQUISITION SYSTEM q SWITCHED-GAIN AMPLIFIER DESCRIPTION The INA120 is a precision instrumentation amplifier ideal for accurate signal acquisition. It combines pre- cision, protected-input operational amplifiers, laser- trimmed gain-setting resistors, and a high common- mode rejection difference amplifier on a single chip. Simple pin-strapped connections set precise gains of 1, 10, 100 or 1000. External resistors can be used to set any gain from one to 5000. Gains can be digitally selected with an external multiplexer. Gain-sense con- nections on the INA120 maintain accuracy when using multiplexer or gain-switching circuitry. Low power dissipation and careful on-chip thermal management reduce warm-up drift and assure excellent long-term stability. The INA120 is available in both plastic and ceramic 18-pin DIP packages, specified for the industrial tem- perature range. Precision INSTRUMENTATION AMPLIFIER + – A 1 – + A 2 + – A 3 2k Ω 2k Ω 400 Ω 44 Ω 43 67 12 217 1 18 16 13 15 14 5 8 9 10 11 Gain Sense 1 –In Offset Adjust A Out 1 V+ V– V O Com A Out 2 +In Gain Sense 2 Gain Set 2 Gain Set 1 RC X1000 X100 X10 1k Ω 1k Ω 20k Ω 20k Ω 10k Ω 10k Ω 10k Ω 10k Ω 1k Ω 1k Ω ® ©1989 Burr-Brown Corporation PDS-1071 Printed in U.S.A. March, 1992 |
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