LT1490A Datasheet | Linear Technology

LT1490A Dual Over-The-Top Micropower Rail-to-Rail Input and Output Op Amp Features s s s s s s DESCRIPTIO s s s s s s s s s U APPLICATIO S s Low Input Offset Voltage: 500µV Max Output Swings to 10m V Max from V - Rail-to-Rail Input and Output Micropower: 50µA/Amplifier Max MSOP Package Over-The-Top TM Input mon Mode Range Extends 44V Above V - , Independent of V + Specified on 3V, 5V and ± 15V Supplies High Output Current: 20m A Output Drives 10,000p F with Output pensation Reverse Battery Protection to 18V No Supply Sequencing Problems High Voltage Gain: 1500V/m V High CMRR: 98d B No Phase Reversal Gain Bandwidth Product: 200k Hz s s s s Battery- or Solar-Powered Systems Portable Instrumentation Sensor Conditioning Supply Current Sensing Battery Monitoring Micropower Active Filters 4m A to 20m A Transmitters The LT ®1490A is an enhanced version of the popular LT1490 op amp with improved input offset voltage (500µV max) and output voltage swing (10m V max from V - ). It is remended for all new designs. The LT1490A operates on all single and split supplies with a total voltage of 2V to 44V, drawing only 40µA of quiescent current per amplifier. It is reverse supply protected; it draws virtually no current for reverse supply up to 18V. The input range of the LT1490A includes both supplies and the output swings to both supplies. Unlike most micropower op amps, the LT1490A can drive heavy loads; its rail-to-rail output drives 20m A. The LT1490A is unity-gain stable and drives all capacitive loads up to 10,000p F when optional 0.22µF and 150Ω pensation is used. The LT1490A has a unique input stage that operates and remains high impedance when above the positive supply. The inputs take 44V both differential and mon mode even when operating on a 3V supply. Built-in resistors protect the inputs for faults below the negative supply up to 15V. There is no phase reversal of the output for inputs 15V below V - or 44V above V - , independent of V +. The LT1490A dual op...