LTC6655/LTC6655LN 0.25ppm Noise, Low Drift Precision References FEATURESDESCRIPTION n Low Noise: The LTC®6655 is a complete family of precision bandgap n 0.25ppmP-P (0.1Hz to 10Hz) 625nVP-P for the voltage references, offering exceptional noise and drift LTC6655-2.5 performance. This low noise and drift is ideally suited n 0.21ppmRMS (10Hz to 10kHz) for the for the high resolution measurements required by instru- LTC6655LN-2.5 CNR = 100µF mentation and test equipment. In addition, the LTC6655 n Low Drift: 2ppm/°C Max is fully specified over the temperature range of –40°C n High Accuracy: ±0.025% Max to 125°C, ensuring its suitability for demanding auto- n No Humidity Sensitivity (LS8 Package) motive and industrial applications. Advanced curvature n Thermal Hysteresis (LS8): 30ppm (–40°C to 85°C) compensation allows this bandgap reference to achieve a n Long-Term Drift (LS8): 20ppm/√kHr drift of less than 2ppm/°C with a predictable temperature n 100% Tested at –40°C, 25°C and 125°C characteristic and an output voltage accurate to ±0.025%, n Load Regulation: <10ppm/mA reducing or eliminating the need for calibration. n Sinks and Sources Current: ±5mA The LTC6655LN Low Noise comes with a noise reduction n Low Dropout: 500mV pin that enables reduction of wideband noise with the n Maximum Supply Voltage: 13.2V addition of a single capacitor. n Low Power Shutdown: <20µA Max n Available Output Voltages: 1.25V, 2.048V, 2.5V, 3V, The LTC6655 can be powered from as little as 500mV 3.3V, 4.096V, 5V above the output voltage to as much as 13.2V. Superior n Available in an 8-Lead MSOP and High Stability load regulation with source and sink capability, coupled Hermetic 5mm × 5mm LS8 Packages with exceptional line rejection, ensures consistent per- formance over a wide range of operating conditions. A APPLICATIONS shutdown mode is provided for low power applications. n Instrumentation and Test Equipment The LTC6655 references are offered in an 8-lead MSOP n High Resolution Data Acquisition Systems package and an 8-lead LS8 package. The LS8 is a n Weigh Scales 5mm × 5mm surface mount hermetic package that pro- n Precision Battery Monitors vides outstanding stability. n Precision Regulators All registered trademarks and trademarks are the property of their respective owners. n Medical Equipment TYPICAL APPLICATIONBasic ConnectionLow Frequency 0.1Hz to 10Hz Noise (LTC6655-2.5) LTC6655-2.5 3V < VIN ≤ 13.2V VIN V V OUT_F OUT CIN SHDN VOUT_S 0.1µF COUT GND 10µF 6655 TA01a 500nV/DIV Basic Connection with Noise Reduction LTC6655LN-2.5 3V < VIN ≤ 13.2V VIN V V OUT OUT CIN SHDN NR COUT 0.1µF 10µF C GND 6655 TA01b NR 1s/DIV 10µF 6655 TA01c Rev. G Document Feedback For more information www.analog.com 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Available Options Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
