INA120

® INA120 Precision INSTRUMENTATION AMPLIFIER FEATURES q LOW OFFSET VOLTAGE: 25µV max q LOW OFFSET VOLTAGE DRIFT: 0.25µV/°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 Gain Sense 1 4 3 –In Gain Set 1 5 2kΩ RC 8 44Ω X1000 9 400Ω X100 10 2kΩ X10 11 1kΩ 1kΩ 1kΩ 1kΩ DESCRIPTION The INA120 is a precision instrumentation amplifier ideal for accurate signal acquisition. It combines precision, protected-input operational amplifiers, lasertrimmed gain-setting resistors, and a high commonmode 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 a...