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INA116U Datasheet(PDF) 1 Page - Burr-Brown (TI) |
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INA116U Datasheet(HTML) 1 Page - Burr-Brown (TI) |
1 / 9 page ©1994 Burr-Brown Corporation PDS-1242B Printed in U.S.A. May, 1995 Difet®; Burr-Brown Corporation FEATURES q LOW INPUT BIAS CURRENT: 3fA typ q BUFFERED GUARD DRIVE PINS q LOW OFFSET VOLTAGE: 2mV max q HIGH COMMON-MODE REJECTION: 84dB (G = 10) q LOW QUIESCENT CURRENT: 1mA q INPUT OVER-VOLTAGE PROTECTION: ±40V APPLICATIONS q LABORATORY INSTRUMENTATION q pH MEASUREMENT q ION–SPECIFIC PROBES q LEAKAGE CURRENT MEASUREMENT Ultra Low Input Bias Current INSTRUMENTATION AMPLIFIER INA116 INA116 INA116 A 1 A 2 A 3 60k Ω 60k Ω 60k Ω 60k Ω V IN V IN R G V+ V– INA116 V O Ref G = 1 + 50k Ω R G – + 25k Ω 25k Ω Guard Guard Guard Guard +1 +1 Over-Voltage Protection Over-Voltage Protection 2 3 4 1 16 5 6 7 8 11 9 13 ® DESCRIPTION The INA116 is a complete monolithic FET-input instru- mentation amplifier with extremely low input bias current. Difet ® inputs and special guarding techniques yield input bias currents of 3fA at 25 °C, and only 25fA at 85 °C. Its 3-op amp topology allows gains to be set from 1 to 1000 by connecting a single external resistor. Guard pins adjacent to both input connections can be used to drive circuit board and input cable guards to maintain extremely low input bias current. The INA116 is available in 16-pin plastic DIP and SOL-16 surface-mount packages, specified for the –40 °C to +85°C temperature range. 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 |
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