INA121U/2K5 Description
The INA121U/2K5 is a FET-input, low-power instrumentation amplifier offering excellent accuracy. Its versatile three-op amp design and very small size make it ideal for a variety of general-purpose applications. Low bias current (±4pA) allows use with high impedance sources. Gain can be set from 1V to 10,000V/V with a single external resistor. Internal input protection can withstand up to ±40V without damage.
INA121U/2K5 Features
LOW BIAS CURRENT: ±4pA
LOW QUIESCENT CURRENT: ±450µA
LOW INPUT OFFSET VOLTAGE: ±200µV
LOW INPUT OFFSET DRIFT: ±2µV/°C
LOW INPUT NOISE: 20nV/√Hz at f = 1kHz (G =100)
HIGH CMR: 106dB
WIDE SUPPLY RANGE: ±2.25V to ±18V
LOW NONLINEARITY ERROR: 0.001% max
INPUT PROTECTION TO ±40V
8-PIN DIP AND SO-8 SURFACE MOUNT
INA121U/2K5 Applications
LOW-LEVEL TRANSDUCER AMPLIFIERS: Bridge, RTD, Thermocouple
PHYSIOLOGICAL AMPLIFIERS: ECG, EEG, EMG, Respiratory
HIGH IMPEDANCE TRANSDUCERS
CAPACITIVE SENSORS
MULTI-CHANNEL DATA ACQUISITION
PORTABLE, BATTERY-OPERATED SYSTEMS
GENERAL PURPOSE INSTRUMENTATION
