INA2141

® INA 214 1 INA2141 INA 214 1 Dual, Low Power, G = 10, 100 INSTRUMENTATION AMPLIFIER FEATURES q LOW OFFSET VOLTAGE: 50µV max q LOW DRIFT: 0.5µV/°C max q EXCELLENT GAIN ACCURACY: ±0.05% max at G = 10 q LOW INPUT BIAS CURRENT: 5nA max q HIGH CMR: 117dB min (G = 100) q INPUTS PROTECTED TO ±40V q WIDE SUPPLY RANGE: ±2.25V to ±18V q LOW QUIESCENT CURRENT: 750µA/IA q 16-PIN PLASTIC DIP, SOL-16 DESCRIPTION The INA2141 is a low power, dual instrumentation amplifier offering excellent accuracy. Its versatile 3-op amp design and small size make it ideal for a wide range of applications. Current-feedback input circuitry provides wide bandwidth even at high gain (200kHz at G = 100). Simple pin connections set an accurate gain of 10 or 100V/V without external resistors. Internal input protection can withstand up to ±40V without damage. The INA2141 is laser trimmed for very low offset voltage (50µV), drift (0.5µV/°C) and high commonmode rejection (117dB at G = 100). It operates with power supplies as low as ±2.25V, and quiescent current is only 750µA per amplifier—ideal for battery operated systems. Packages are 16-pin plastic DIP, and SOL-16 surface-mount, specified for the –40°C to +85°C temperature range. V+ VINA – APPLICATIONS q SENSOR AMPLIFIER THERMOCOUPLE, RTD, BRIDGE q MEDICAL INSTRUMENTATION q MULTIPLE CHANNEL SYSTEMS 9 INA2141 7 1 3 Over-Voltage Protection 252Ω 5050Ω 252Ω A1A 25kΩ 40kΩ 40kΩ A3A 6 VOA G = 10 or 100 4 2 25kΩ A2A 5 40kΩ 40kΩ Ref VINA VINB – + O...