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DAC1209 Datasheet Double-buffered D-to-a Converters

Manufacturer: National Semiconductor (now Texas Instruments)

Overview: MICRO-DAC DAC1208 DAC1209 DAC1210 DAC1230 DAC1231 DAC1232 12-Bit mP patible Double-Buffered D to A Converters February 1995 MICRO-DACTM DAC1208 DAC1209 DAC1210 DAC1230 DAC1231 DAC1232 12-Bit mP patible Double-Buffered D.

General Description

The DAC1208 and the DAC1230 series are 12-bit multiplying 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 control lines allow these DACs to appear as a two-byte ‘‘stack’’ in the system’s memory or I O space with no additional interfacing logic required The DAC1208 series provides all 12 input lines to allow single buffering for maximum throughput when used with 16-bit processors These input lines can also be externally configured 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 independent of the switch state Special circuitry provides TTL logic input voltage level patibility The DAC1208 series and DAC1230 series are the 12-bit members of a family of microprocessor patible DACs (MICRO-DACsTM) For applications requiring other resolutions the DAC1000 series for 10-bit and DAC0830 series for 8-bit are available alternatives

Key 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 (1 4V logic threshold) Y Works with g10V reference full 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 Curr.

More Datasheets from National Semiconductor (now Texas Instruments)

Part Number Description
DAC1200 (DAC1200 / DAC1201) 12-Bit Digital to Analog Converters
DAC1201 (DAC1200 / DAC1201) 12-Bit Digital to Analog Converters
DAC1208 12-Bit/ uP Compatible/ Double-Buffered D to A Converters
DAC1210 12-Bit/ uP Compatible/ Double-Buffered D to A Converters
DAC1218 12-Bit Binary Multiplying D/A Converter
DAC1219 12-Bit Binary Multiplying D/A Converter
DAC121C081 12-Bit Micro Power Digital-to-Analog Converter
DAC121C085 12-Bit Micro Power Digital-to-Analog Converter
DAC121S101 12-Bit Micro Power Digital-to-Analog Converter
DAC121S101Q RRO Digital-to-Analog Converter

DAC1209 Distributor