DESCRIPTION
●The dual LT®1490 and quad LT1491 op amps operate on all single and split supplies with a total voltage of 2V to 44V drawing only 40µA of quiescent current per amplifier. These amplifiers are reverse supply protected; they draw no current for reverse supply up to 18V. The input range of the LT1490/LT1491 includes both supplies and the output swings to both supplies. Unlike most micropower op amps, the LT1490/LT1491 can drive heavy loads; their rail-to-rail outputs drive 20mA. The LT1490/LT1491 are unity-gain stable and drive all capacitive loads up to 10,000pF when optional 0.22µF and 150Ω compensation is used.
●FEATURES
●■ Rail-to-Rail Input and Output
●■ Single Supply Input Range: –0.4V to 44V
●■ Micropower: 50µA/Amplifier Max
●■ Specified on 3V, 5V and ±15V Supplies
●■ High Output Current: 20mA
●■ Output Drives 10,000pF with Output Compensation
●■ Reverse Battery Protection to 18V
●■ No Supply Sequencing Problems
●■ High Voltage Gain: 1500V/mV
●■ High CMRR: 98dB
●■ No Phase Reversal
●■ Gain Bandwidth Product: 200kHz
●APPLICATIONS
●■ Battery- or Solar-Powered Systems
● Portable Instrumentation
● Sensor Conditioning
●■ Supply Current Sensing
●■ Battery Monitoring
●■ Micropower Active Filters
●■ 4mA to 20mA Transmitters
