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INA115AU Datasheet(PDF) 1 Page - Texas Instruments |
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INA115AU Datasheet(HTML) 1 Page - Texas Instruments |
1 / 16 page ©1992 Burr-Brown Corporation PDS-1169B Printed in U.S.A. October, 1993 INA115 Precision INSTRUMENTATION AMPLIFIER A 1 A 2 A 3 12 11 10 25k Ω 25k Ω 25k Ω 25k Ω 13 7 5 4 V IN V IN R G V+ V– INA115 Ref V O G = 1 + 50k Ω R G – + Over-Voltage Protection 25k Ω 25k Ω Over-Voltage Protection Feedback 15 14 3 2 8 V O2 V O1 1 FEATURES q LOW OFFSET VOLTAGE: 50 µV max q LOW DRIFT: 0.25 µV/ °C max q LOW INPUT BIAS CURRENT: 2nA max q HIGH COMMON-MODE REJECTION: 115dB min q INPUT OVER-VOLTAGE PROTECTION: ±40V q WIDE SUPPLY RANGE: ±2.25 TO ±18V q LOW QUIESCENT CURRENT: 3mA max q SOL-16 SURFACE-MOUNT PACKAGE APPLICATIONS q SWITCHED-GAIN AMPLIFIER q BRIDGE AMPLIFIER q THERMOCOUPLE AMPLIFIER q RTD SENSOR AMPLIFIER q MEDICAL INSTRUMENTATION q DATA ACQUISITION DESCRIPTION The INA115 is a low cost, general purpose instrumen- tation amplifier offering excellent accuracy. Its versa- tile three-op amp design and small size make it ideal for a wide range of applications. Similar to the model INA114, the INA115 provides additional connections to the input op amps, A 1 and A2, which improve gain accuracy in high gains and are useful in forming switched-gain amplifiers. A single external resistor sets any gain from 1 to 10,000. Internal input protection can withstand up to ±40V without damage. The INA115 is laser trimmed for very low offset voltage (50 µV), drift (0.25µV/˚C) and high common- mode rejection (115dB at G=1000). It operates with power supplies as low as ±2.25V, allowing use in battery operated and single 5V supply systems. Quies- cent current is 3mA maximum. The INA115 is available in the SOL-16 surface-mount package, specified for the –40 °C to +85°C tempera- ture range. ® INA115 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 Internet: http://www.burr-brown.com/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132 SBOS021 |
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