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DAC1210LCJ-1 Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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DAC1210LCJ-1 Datasheet(HTML) 1 Page - National Semiconductor (TI) |
1 / 18 page TLH5690 February 1995 MICRO-DAC TM DAC1208DAC1209DAC1210DAC1230 DAC1231DAC1232 12-Bit mP Compatible Double-Buffered D to A Converters General Description The DAC1208 and the DAC1230 series are 12-bit multiply- ing D to A converters designed to interface directly with a wide variety of microprocessors (8080 8048 8085 Z-80 etc) Double buffering input registers and associated con- trol lines allow these DACs to appear as a two-byte ‘‘stack’’ in the system’s memory or IO space with no additional in- terfacing logic required The DAC1208 series provides all 12 input lines to allow sin- gle buffering for maximum throughput when used with 16-bit processors These input lines can also be externally config- ured to permit an 8-bit data interface The DAC1230 series can be used with an 8-bit data bus directly as it internally formulates the 12-bit DAC data from its 8 input lines All of these DACs accept left-justified data from the processor The analog section is a precision silicon-chromium (Si-Cr) R-2R ladder network and twelve CMOS current switches An inverted R-2R ladder structure is used with the binary weighted currents switched between the IOUT1 and IOUT2 maintaining a constant current in each ladder leg indepen- dent of the switch state Special circuitry provides TTL logic input voltage level compatibility The DAC1208 series and DAC1230 series are the 12-bit members of a family of microprocessor compatible DACs (MICRO-DACsTM) For applications requiring other resolu- tions the DAC1000 series for 10-bit and DAC0830 series for 8-bit are available alternatives Features Y Linearity specified with zero and full-scale adjust only Y Direct interface to all popular microprocessors Y Double-buffered single-buffered or flow through digital data inputs Y Logic inputs which meet TTL voltage level specs (14V logic threshold) Y Works with g10V referencefull 4-quadrant multiplication Y Operates stand-alone (without mP) if desired Y All parts guaranteed 12-bit monotonic Y DAC1230 series is pin compatible with the DAC0830 series 8-bit MICRO-DACs Key Specifications Y Current Settling Time 1 ms Y Resolution 12 Bits Y Linearity (Guaranteed over temperature) 10 11 or 12 Bits of FS Y Gain Tempco 13 ppm C Y Low Power Dissipation 20 mW Y Single Power Supply 5 VDC to 15 VDC Typical Application TLH5690 – 1 TRI-STATE is a registered trademark of National Semiconductor Corp MICRO-DACTM is a trademark of National Semiconductor Corp C1995 National Semiconductor Corporation RRD-B30M115Printed in U S A |
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