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LT6656 Datasheet(PDF) 1 Page - Linear Integrated Systems |
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LT6656 Datasheet(HTML) 1 Page - Linear Integrated Systems |
1 / 22 page LT6657 1 6657fb For more information www.linear.com/LT6657 Typical applicaTion FeaTures DescripTion 1.5ppm/°C Drift, Low Noise, Buffered Reference TheLT®6657isaprecisionvoltagereferencethatcombines robust operating characteristics with extremely low drift and low noise. With advanced curvature compensation, this bandgap reference achieves 1.5ppm/°C drift with predictable temperature behavior, and an initial voltage accuracy of 0.1%. It also offers 0.5ppmP-P noise and very low temperature cycling hysteresis. TheLT6657isalowdropoutreferencethatcanbepowered from as little as 50mV above the output voltage, up to 40V. The buffered output supports ±10mA of output drive with low output impedance and precise load regulation. The high sink current capability allows operation as a negative voltage reference with the same precision as a positive reference. This part is safe under reverse battery condi- tions, and includes current protection when the output is short-circuited and thermal shutdown for overload condi- tions. A shutdown is included to allow power reduction while enabling a quick turn-on. TheLT6657isfullyspecifiedoverthetemperaturerangeof –40°Cto125°C.Itisavailableinthe8-leadMSOPpackage. L , LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Basic Connection Output Voltage Temperature Drift n Low Drift n A Grade: 1.5ppm/°C Max n B Grade: 3ppm/°C Max n Low Noise: n 0.5ppmP-P (0.1Hz to 10Hz) n 0.8ppmRMS (10Hz to 1kHz) n Wide Supply Range to 40V n Sources and Sinks 10mA Min n Line Regulation: 0.2ppm/V n Load Regulation: 0.7ppm/mA n Reverse Supply Protection n Reverse Output Protection n Low Power Shutdown: <4µA Max n Thermal Protection n Can Operate in Shunt Mode n Configurable as a Negative Reference n Available Output Voltage Options: 2.5V, 3V, 5V n MSOP-8 Package applicaTions n High Temperature Industrial n High Resolution Data Acquisition Systems n Instrumentation and Process Control n Automotive Control and Monitoring n Medical Equipment n Shunt and Negative Voltage References LT6657 CIN 0.1µF (VOUT + 50mV) < VIN < 40V OUT IN GND COUT 1µF VOUT 6657 TA01a 2 SHDN 3 6 4 TEMPERATURE (°C) –45 200 100 –100 0 –200 5 105 55 6657 TA01b 130 –20 80 30 THREE TYPICAL PARTS 1ppm/°C BOX |
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