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DAC1054 Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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DAC1054 Datasheet(HTML) 1 Page - National Semiconductor (TI) |
1 / 14 page TLH11437 January 1995 DAC1054 Quad 10-Bit Voltage-Output Serial DA Converter with Readback General Description The DAC1054 is a complete quad 10-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 serial microprocessor interface By combining in one package the reference amplifiers and conversion circuitry for four DA converters the DAC1054 minimizes wiring and parts count and is hence ideally suited for appli- cations where cost and board space are of prime concern The DAC1054 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 DAC1054’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 Each DAC register may be written to individually Double buffering al- lows all 4 DAC outputs to be updated simultaneously or individually 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 37 ms max Y Analog output voltage range 03V to 28V Y Supply voltage range 45V to 55V Y Clock frequency for write 10 MHz max Y Clock frequency for read back 5 MHz max Y Power dissipation (fCLK e 10 MHz) 100 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 TLH11437 – 1 Top View Ordering Information Industrial (b40 C k TA k a85 C) Package DAC1054CIN N24A Molded DIP DAC1054CIWM M24B Small Outline Military (b55 C k TA k a125 C) DAC1054CMJ883 or J24A Ceramic DIP 5962-9466201MJA COPSTM HPCTM and MICROWIRETM are trademarks of National Semiconductor Corporation C1995 National Semiconductor Corporation RRD-B30M75Printed in U S A |
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