PDF ADR318 Data sheet ( Hoja de datos )

Número de pieza	ADR318
Descripción	Precision Low Drift SOT-23 Voltage Reference with Shutdown
Fabricantes	Analog Devices
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No Preview Available ! a FEATURES Initial Accuracy: ؎5 mV Max, ؎0.27% Max Low Temperature Coefficient: 25 ppm/؇C Max Load Regulation: 100 ppm/mA Line Regulation: 25 ppm/V Low Supply Headroom: 0.6 V Wide Operating Range: (VOUT + 0.6 V) to 15 V Low Power: 120 ␮A Max Shutdown to Less than 3 ␮A Max Output Current: 5 mA Wide Temperature Range: 0؇C to 70؇C Tiny 5-Lead SOT-23 Package APPLICATIONS Battery Powered Instrumentation Portable Medical Instruments Data Acquisition Systems Industrial Process Control Systems Fault Protection Critical Systems Precision Low Drift SOT-23 Voltage Reference with Shutdown ADR318* PIN CONFIGURATION 5-Lead SOT-23 SHDN 1 5 GND VIN 2 ADR318 VOUT (SENSE) 3 4 –VOUT (FORCE) GENERAL DESCRIPTION The ADR318 is a precision 1.8 V band gap voltage reference featuring high accuracy, high stability, and low power consump- tion in a tiny footprint. Patented temperature drift curvature correction techniques minimize nonlinearity of the voltage change with temperature. The wide operating range and low power con- sumption with additional shutdown capability make the part ideal for battery powered applications. The VOUT (SENSE) pin enables greater accuracy by supporting full Kelvin operation in PCBs employing thin or long traces. The ADR318 is a low dropout voltage (LDV) device that provides a stable output voltage from supplies as low as 600 mV above the output voltage. This device is specified over the industrial operating range of 0°C to 70°C, and is available in the tiny 5-lead SOT-23 package. The combination of VOUT (SENSE) and shutdown functions also enables a number of unique applications, combining precision reference/regulation with fault decision and overcurrent protection. Details are provided in the Applications section. *Protected by U.S. Patent No. 5,969,657; other patents pending. REV. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective companies. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 www.analog.com Fax: 781/326-8703 © 2003 Analog Devices, Inc. All rights reserved. 1 page ADR318 LOAD OFF LOAD ON LOAD OFF LOAD ON LOAD OFF LOAD ON TIME – 200␮s/DIV TPC 10. Load Transient Response, CL = 0 nF TIME – 200␮s/DIV TPC 11. Load Transient Response, CL = 1 nF TIME – 200␮s/DIV TPC 12. Load Transient Response, CL = 100 nF VIN VIN VOUT VOUT VOUT SHUTDOWN PIN TIME – 40␮s/DIV TPC 13. Turn On/Turn Off Response at 5 V, RLOAD = 1.8 kΩ TIME – 100␮s/DIV TPC 14. Turn On/Turn Off Response at 5 V, RLOAD = 1.8 kΩ, CBYPASS = 0.1 µF TIME – 4␮s/DIV TPC 15. Shutdown Pin Response REV. 0 –5– 5 Page

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