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AD5272BRMZ-50 Arkusz danych(PDF) 1 Page - Analog Devices |
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AD5272BRMZ-50 Arkusz danych(HTML) 1 Page - Analog Devices |
1 / 28 page 1024-/256-Position, 1% Resistor Tolerance Error, I2C Interface and 50-TP Memory Digital Rheostat Data Sheet AD5272/AD5274 Rev. D Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother 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 ©2009–2013 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com FEATURES Single-channel, 1024-/256-position resolution 20 kΩ, 50 kΩ, 100 kΩ nominal resistance Maximum ±1% nominal resistor tolerance error 50-times programmable (50-TP) wiper memory Rheostat mode temperature coefficient: 5 ppm/°C 2.7 V to 5.5 V single-supply operation ±2.5 V to ±2.75 V dual-supply operation for ac or bipolar operations I2C-compatible interface Wiper setting readback Power on refreshed from 50-TP memory Thin LFCSP 10-lead, 3 mm × 3 mm × 0.8 mm package Compact MSOP, 10-lead 3 mm × 4.9 mm × 1.1 mm package APPLICATIONS Mechanical rheostat replacements Op-amp: variable gain control Instrumentation: gain, offset adjustment Programmable voltage to current conversions Programmable filters, delays, time constants Programmable power supply Sensor calibration FUNCTIONAL BLOCK DIAGRAM 10/8 VDD A W AD5272/AD5274 SCL ADDR SDA I2C SERIAL INTERFACE POWER-ON RESET RDAC REGISTER 50-TP MEMORY BLOCK RESET VSS EXT_CAP GND Figure 1. GENERAL DESCRIPTION The AD5272/AD52741 are single-channel, 1024-/256-position digital rheostats that combine industry leading variable resistor performance with nonvolatile memory (NVM) in a compact package. The AD5272/AD5274 ensure less than 1% end-to-end resistor tolerance error and offer 50-times programmable (50-TP) memory. The guaranteed industry leading low resistor tolerance error feature simplifies open-loop applications as well as precision calibration and tolerance matching applications. The AD5272/AD5274 device wiper settings are controllable through the I2C-compatible digital interface. Unlimited adjustments are allowed before programming the resistance value into the 50-TP memory. The AD5272/AD5274 do not require any external voltage supply to facilitate fuse blow and there are 50 opportunities for permanent programming. During 50-TP activation, a permanent blow fuse command freezes the wiper position (analogous to placing epoxy on a mechanical trimmer). The AD5272/AD5274 are available in a 3 mm × 3 mm 10-lead LFCSP package and in a 10-lead MSOP package. The parts are guaranteed to operate over the extended industrial temperature range of −40°C to +125°C. 1 Protected by U.S. Patent Number 7688240. |
Podobny numer części - AD5272BRMZ-50 |
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Podobny opis - AD5272BRMZ-50 |
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