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LT1496IN Datasheet(PDF) 1 Page - Linear Technology |
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LT1496IN Datasheet(HTML) 1 Page - Linear Technology |
1 / 16 page 1 LT1494/LT1495/LT1496 TYPICAL APPLICATION APPLICATIO S FEATURES 1.5 µA Max, Single, Dual and Quad Over-The-Top Precision Rail-to-Rail Input and Output Op Amps s Low Supply Current: 1.5 µA Max s Rail-to-Rail Input and Output s Low Offset Voltage: 375 µV Max s Operating Temperature Range: – 40 °C to 125°C s Over-The-Top TM Inputs Operate Above V+ s Wide Supply Range: 2.2V to 36V s Single Supply Input Range: – 0.3V to 36V s Low Input Bias Current: 250pA s Low Input Offset Current: 20pA s High AVOL: 100V/mV Minimum Driving 100kΩ Load s Output Sources and Sinks 500 µA Load Current s Reverse Battery Protected to 18V The LT ®1494/LT1495/LT1496 are the lowest power (IS ≤ 1.5µA) op amps with precision specifications. The extremely low supply current is combined with excellent amplifier specifications: input offset voltage is 375 µV maximum with a typical drift of only 0.4 µV/°C, input offset current is 100pA maximum. A minimum open-loop gain (AVOL) of 100V/mV ensures that gain errors are small. The device characteristics change little over the supply range of 2.2V to ±15V. Supply rejection is 90dB and the common mode rejection ratio is 90dB. Operation is specified for 3V, 5V and ±15V supplies. Reverse battery protection (–18V min) and inputs that operate above the positive supply make the LT1494/LT1495/LT1496 easy to use in harsh environments. The low bias currents and offset current of the amplifier permit the use of megohm level source resistors without introducing significant errors. Voltage noise at 4 µVP-P is remarkably low considering the low supply current. The LT1494 is available in the 8-Pin MSOP, PDIP and SO packages.The LT1495 is available in plastic 8-Pin PDIP and SO packages with the standard dual op amp pinout. The LT1496 is available in 14-Pin SO and PDIP packages. s Battery- or Solar-Powered Systems s Portable Instrumentation s Remote Sensor Amplifier s Micropower Filter Micropower Integrating Current Sense + – 1/2 LT1495 0.1 µF RESET RI 1M 1M RS 0.1 Ω LOAD + – 1/2 LT1495 IL VCC 10M 10M VCC VO OUTPUT SWITCHES WHEN ILdt = 0.98 VCC IS = 3µA DURING INTEGRATION; IS = 5µA END OF INTEGRATION C = (4.9A)(SEC) FOR VCC = 5V RI RS () 1495 TA01 200k TC VOS Distribution TC VOS (µV/°C) 30 25 20 15 10 5 0 –1.2 –0.4 0.4 1.2 1495 TA02 2.0 –1.6 – 2.0 –0.8 0 0.8 1.6 100 AMPLIFIERS VS = ±2.5V –40 °C TO 85°C DESCRIPTIO , LTC and LT are registered trademarks of Linear Technology Corporation. Over-The-Top is a trademark of Linear Technology Corporation. |
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