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DAC0854BIWM bảng dữ liệu(PDF) 1 Page - National Semiconductor (TI) |
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DAC0854BIWM bảng dữ liệu(HTML) 1 Page - National Semiconductor (TI) |
1 / 14 page TLH11261 January 1995 DAC0854 Quad 8-Bit Voltage-Output Serial DA Converter with Readback General Description The DAC0854 is a complete quad 8-bit voltage-output digi- tal-to-analog converter that can operate on a single 5V sup- ply It includes on-chip output amplifiers internal voltage ref- erence and a serial microprocessor interface By combining in one package the reference amplifiers and conversion circuitry for four DA converters the DAC0854 minimizes wiring and parts count and is hence ideally suited for appli- cations where cost and board space are of prime concern The DAC0854 also has a data readback function which can be used by the microprocessor to verify that the desired input word has been properly latched into the DAC0854’s data registers The data readback function simplifies the de- sign and reduces the cost of systems which need to verify data integrity The logic comprises a MICROWIRETM-compatible serial in- terface and control circuitry The interface allows the user to write to any one of the input registers or to all four at once The latching registers are double-buffered consisting of 4 separate input registers and 4 DAC registers Double buffer- ing allows all 4 DAC outputs to be updated simultaneously The four reference inputs allow the user to configure the system to have a separate output voltage range for each DAC The output voltage of each DAC can range between 03V and 28V and is a function of VBIAS VREF and the input word Features Y Single a5V supply operation Y MICROWIRE serial interface allows easy interface to many popular microcontrollers including the COPSTM and HPCTM families of microcontrollers Y Data readback capability Y Output data can be formatted to read back MSB or LSB first Y Versatile logic allows selective or global update of the DACs Y Power fail flag Y Output amplifiers can drive 2 kX load Y Synchronousasynchronous update of the DAC outputs Key Specifications Y Guaranteed monotonic over temperature Y Integral linearity error g LSB max Y Output settling time 27 ms max Y Analog output voltage range 03V to 28V Y Supply voltage range 45V to 55V Y Clock frequency 10 MHz max Y Power dissipation (fCLK e 10 MHz) 95 mW max Y On-board reference 265V g2% max Applications Y Automatic test equipment Y Industrial process controls Y Automotive controls and diagnostics Y Instrumentation Connection Diagram TLH11261 – 1 Top View Ordering Information Industrial (b40 C k TA a85 C) Package DAC0854BIN DAC0854CIN N20A Molded DIP DAC0854CIJ J20A Ceramic DIP DAC0854BIWM DAC0854CIWM M20B Small Outline Military (b55 C k TA k a125 C) DAC0854CMJ883 J20A Ceramic DIP COPSTM HPCTM and MICROWIRETM are trademarks of National Semiconductor Corporation C1995 National Semiconductor Corporation RRD-B30M75Printed in U S A |
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