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The INA126 and INA2126 are precision instrumentation amplifiers for accurate, low noise differential signal acquisition.
Their two-op-amp design provides excellent performance with very low quiescent current (175A/chan.). This, combined with wide operating voltage range of ±1.35V to ±18V, makes them ideal for portable instrumentation and data acquisition systems.
Gain can be set from 5V/V to 10000V/V with a single external resistor. Laser trimmed input circuitry provides low offset voltage (250V max), low offset voltage drift (3V/ max) and excellent common-mode rejection.
Single version package options include 8-pin plastic DIP, SO-8 surface mount, and fine-pitch MSOP-8 surface-mount.
Dual version is available in the space-saving SSOP-16 finepitch surface mount, SO-16, and 16-pin DIP. All are specified or the 40 to +85 industrial temperature range.
INA2126 Maximum Ratings
Power Supply Voltage, V+ to V ........................................................ 36V Input Signal Voltage(2) ........................................(V)0.7 to (V+)+0.7V Input Signal Current(2) ....................................................................10mA Output Short Circuit .................................................................Continuous Operating Temperature ................................................. 55 to +125 Storage Temperature ..................................................... 55 to +125 Lead Temperature (soldering, 10s) ............................................... +300
NOTES: (1) Stresses above these ratings may cause permanent damage. (2) Input signal voltage is limited by internal diodes connected to power supplies. See text.
INA2126 Features
`LOW QUIESCENT CURRENT: 175A/chan. `WIDE SUPPLY RANGE: ±1.35V to ±18V ` LOW OFFSET VOLTAGE: 250V max ` LOW OFFSET DRIFT: 3V/ max ` LOW NOISE: 35nVHz `LOW INPUT BIAS CURRENT: 25nA max `8-PIN DIP, SO-8, MSOP-8 SURFACE- MOUNT DUAL: 16-Pin DIP, SO-16, SSOP-16
INA2126 Typical Application
·INDUSTRIAL SENSOR AMPLIFIER: Bridge, RTD, Thermocouple ·PHYSIOLOGICAL AMPLIFIER: ECG, EEG, EMG ·MULTI-CHANNEL DATA ACQUISITION ·PORTABLE, BATTERY OPERATED SYSTEMS