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AD584KN Scheda tecnica(PDF) 1 Page - Analog Devices |
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AD584KN Scheda tecnica(HTML) 1 Page - Analog Devices |
1 / 12 page Pin Programmable, Precision Voltage Reference Data Sheet AD584 Rev. C Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©1978–2012 Analog Devices, Inc. All rights reserved. FEATURES Four programmable output voltages 10.000 V, 7.500 V, 5.000 V, and 2.500 V Laser-trimmed to high accuracies No external components required Trimmed temperature coefficient 15 ppm/°C maximum, 0°C to 70°C (AD584K) 15 ppm/°C maximum, −55°C to +125°C (AD584T) Zero output strobe terminal provided 2-terminal negative reference: capability (5 V and above) Output sources or sinks current Low quiescent current: 1.0 mA maximum 10 mA current output capability MIL-STD-883 compliant versions available PIN CONFIGURATIONS Figure 1. 8-Pin TO-99 Figure 2. 8-Lead PDIP GENERAL DESCRIPTION The AD584 is an 8-terminal precision voltage reference offering pin programmable selection of four popular output voltages: 10.000 V, 7.500 V, 5.000 V and 2.500 V. Other output voltages, above, below, or between the four standard outputs, are available by the addition of external resistors. The input voltage can vary between 4.5 V and 30 V. Laser wafer trimming (LWT) is used to adjust the pin programmable output levels and temperature coefficients, resulting in the most flexible high precision voltage reference available in monolithic form. In addition to the programmable output voltages, the AD584 offers a unique strobe terminal that permits the device to be turned on or off. When the AD584 is used as a power supply reference, the supply can be switched off with a single, low power signal. In the off state, the current drained by the AD584 is reduced to approximately 100 µA. In the on state, the total supply current is typically 750 µA, including the output buffer amplifier. The AD584 is recommended for use as a reference for 8-, 10-, or 12-bit digital-to-analog converters (DACs) that require an external precision reference. In addition, the device is ideal for analog-to-digital converters (ADCs) of up to 14-bit accuracy, either successive approximation or integrating designs, and in general, it can offer better performance than that provided by standard self-contained references. The AD584J and AD584K are specified for operation from 0°C to +70°C, and the AD584S and AD584T are specified for the −55°C to +125°C range. All grades are packaged in a hermetically sealed, eight-terminal TO-99 metal can, and the AD584J and AD584K are also available in an 8-lead PDIP. PRODUCT HIGHLIGHTS 1. The flexibility of the AD584 eliminates the need to design- in and inventory several different voltage references. Furthermore, one AD584 can serve as several references simultaneously when buffered properly. 2. Laser trimming of both initial accuracy and temperature coefficient results in very low errors overtemperature without the use of external components. 3. The AD584 can be operated in a 2-terminal Zener mode at a 5 V output and above. By connecting the input and the output, the AD584 can be used in this Zener configuration as a negative reference. 4. The output of the AD584 is configured to sink or source currents. This means that small reverse currents can be tolerated in circuits using the AD584 without damage to the reference and without disturbing the output voltage (10 V, 7.5 V, and 5 V outputs). 5. The AD584 is available in versions compliant with MIL-STD- 883. Refer to the Analog Devices current AD584/883B data sheet for detailed specifications. This can be found under the Additional Data Sheets section of the AD584 product page. 1 2 6 7 3 5 8 V+ TAB 4 AD584 TOP VIEW (Not to Scale) COMMON STROBE VBG CAP 2.5V 5.0V 10.0V 10.0V 1 5.0V 2 2.5V 3 COMMON 4 V+ 8 CAP 7 VBG 6 STROBE 5 AD584 TOP VIEW (Not to Scale) |
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