INA129 Datasheet | Burr-Brown

FEATURES q LOW OFFSET VOLTAGE: 50µV max q LOW DRIFT: 0.5µV/°C max q LOW INPUT BIAS CURRENT: 5n A max q HIGH CMR: 120d B min q INPUTS PROTECTED TO ±40V q WIDE SUPPLY RANGE: ±2.25 to ±18V q LOW QUIESCENT CURRENT: 700µA q 8-PIN PLASTIC DIP, SO-8 DESCRIPTION The INA128 and INA129 are low power, general purpose instrumentation amplifiers offering excellent accuracy. Their versatile 3-op amp design and small size make them ideal for a wide range of applications. Current-feedback input circuitry provides wide bandwidth even at high gain (200k Hz at G = 100). A single external resistor sets any gain from 1 to 10,000. INA128 provides an industry standard gain equation; INA129’s gain equation is patible with the AD620. The INA128/INA129 is laser trimmed for very low offset voltage (50µV), drift (0.5µV/°C) and high mon-mode rejection (120d B at G ≥ 100). It operates with power supplies as low as ±2.25V, and quiescent current is only 700µA- ideal for battery operated systems. Internal input protection can withstand up to ±40V without damage. The INA128/INA129 is available in 8-pin plastic DIP, and SO-8 surface-mount packages, specified for the - 40°C to +85°C temperature range. The INA128 is also available in dual configuration, the INA2128. V+ 7 INA128: G=1+ APPLICATIONS q BRIDGE AMPLIFIER q THERMOCOUPLE AMPLIFIER q RTD SENSOR AMPLIFIER q MEDICAL INSTRUMENTATION q DATA ACQUISITION - 2 INA128, INA129 Over-Voltage Protection A1 40kΩ 25kΩ(1) A3 6 40kΩ 50kΩ RG 49.4kΩ RG INA129: G=1+ RG 8 25kΩ(1) A2 40kΩ 4 V- 5 40kΩ + VIN Over-Voltage Protection Ref NOTE: (1) INA129: 24.7kΩ 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://.burr-brown./ - FAXLine: (800) 548-6133 (US/Canada Only) - Cable: BBRCORP - Telex: 066-6491 - FAX: (520) 889-1510 - Immediate Product Info: (800) 548-6132 ©1995 Burr-Brown...