Transcription of AD421 data sheet - Analog Devices
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AD421 data sheet - Analog Devices
FUNCTIONAL BLOCK DIAGRAMLOCALOSCILLATORSWITCHEDCURRENTSOU RCESANDFILTERINGBANDGAPREFERENCEREF IN(+ )REF OUT1(+ )REF OUT2(+ )LVVCCDRIVECOMPBOOSTLOOPRTNC1 C2 C3 COMLATCHCLOCKDATA40 16-BITSIGMA-DELTA DAC75k 134k 121k 80k AD421 INPUT SHIFTREGISTERDAC LATCHPOWER-ONRESETREV. CInformation furnished by Analog Devices is believed to be accurate andreliable. However, no responsibility is assumed by Analog Devices for itsuse, nor for any infringements of patents or other rights of third partieswhich may result from its use. No license is granted by implication orotherwise under any patent or patent rights of Analog mA to 20 mA Current OutputHART Compatible16-Bit Resolution and Monotonicity Integral Nonlinearity5 V or 3 V Regulator V and V Precision Reference750 A Quiescent Current maxProgrammable Alarm Current CapabilityFlexible High Speed Serial Interface16-Lead SOIC and PDIP PackagesLoop-Powered4 mA to 20 mA DACAD421 PRODUCT HIGHLIGHTS1.
2. The AD421’s regulated supply voltage can be used to power any additional circuits in the transmitter. The regulated output value is pin selectable as either +3 V, +3.3 V or +5 V. 3. The AD421’s on-chip references can provide a precision reference voltage to other devices in the system. This refer-ence voltage can be either +1.25 V or +2 ...
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