DAC1208 National Semiconductor, DAC1208 Datasheet
DAC1208
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DAC1208 Summary of contents
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... DACs to appear as a two-byte ‘‘stack’’ in the system’s memory 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- ...
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... Digital Inputs Digital Inputs Operating Conditions Lead Temperature (Soldering 10 sec ) Temperature Range DAC1208LCJ DAC1209LCJ DAC1210LCJ DAC1230LCJ 17 V DAC1231LCJ DAC1232LCJ DC DAC1231LIN DAC1232LIN V to GND CC DAC1208LCJ-1 DAC1210LCJ-1 25V g DAC1230LCJ-1 DAC1231LCJ 150 C a DAC1232LCJ-1 DAC1231LCN 500 mW DAC1232LCN DAC1231LCWM DAC1232LCWM Range 100 ...
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... Note 7 The unit FSR stands for full-scale range Linearity Error and Power Supply Rejection specs are based on this unit to eliminate dependence on a particular V value to indicate the true performance of the part The Linearity Error specification of the DAC1208 is 0 012% of FSR(max) This guarantees that after REF ...
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Switching Waveforms Typical Performance Characteristics Digital Input Threshold Gain and Linearity Error Variation vs Supply Voltage Write Pulse Width t Digital Input Threshold vs Temperature Control Set-Up Time t CS Data Set-Up Time ...
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... optimum for GND Pins 3 and 12 of the DAC1208 DAC1209 and DAC1210 must be connected to ground Pins 3 and End Point Test After Zero and FS Adjust the DAC1230 DAC1231 and DAC1232 must be connected to ground It is important that I potential for current switching applications Any difference ...
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... I O space) to receive their 12 bits of input data in two successive 8-bit data writing sequences The DAC1230 se- ries is intended for use in systems with an 8-bit data bus The DAC1208 series provides all 12 digital input lines which can be externally configured to be controlled from an 8-bit bus or can be driven directly from a 16-bit data bus ...
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Application Hints (Continued Automatic Transfer The 12-bit DAC word is automatically transferred to the DAC register and the R-2R ladder when the second write (the 4 LSBs of the data) occurs 1 2 Independent Processor Transfer Control In ...
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... XFER and WR2 grounded Byte 1 Byte 2 tied to V FIGURE 4 16-Bit Data Bus Interface for the DAC1208 Series 1 5 16-Bit Data Bus Interface The DAC1208 series provides all 12 digital input lines to permit a direct parallel interface to a 16-bit data bus In this instance double buffering is not always necessary (unless a ...
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... ROM is continuously providing DAC data Only the DAC1208 DAC1209 DAC1210 devices can have all 12 inputs flow-through Simply grounding CS WR1 WR2 and XFER and tying Byte 1 Byte 2 high allows both internal ...
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Application Hints (Continued) width If this does not provide a sufficient data hold time at the end of the write cycle a negative edge triggered one- shot can be included between the system write strobe and the WR pin of ...
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Application Hints (Continued) FIGURE 8 TRI-STATE Buffers Isolate the Data and Control Lines from the DACs A Transfer Word Provides a Flexible Update 5690-14 ...
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... Figure 9 FIGURE 9 Unipolar Output Configuration BI-FET trademark of National Semiconductor Corp The inverting input of the op amp is a virtual ground created by the feedback from its output through the internal 15 k resistor R All of the output current (determined by the ...
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Application Hints (Continued) Transient response and settling time of the op amp are im- portant in fast data throughput applications The largest sta- bility problem is the feedback pole created by the feedback resistance R and the output capacitance of ...
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Application Hints (Continued Zero and Full-Scale Adjustments To calibrate the bipolar output circuit three adjustments are required The first step is to set all of the digital inputs LOW (to force then null the ...
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Application Hints (Continued) 1 Amp( 4096 High Current Controller 8-Bit Course 4-Bit Vernier DAC 5690 – 5690 – 20 ...
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... Ordering Information Part Number Non-Linearity DAC1208LCJ 0 018% DAC1208LCJ-1 0 018% DAC1209LCJ 0 024% DAC1210LCJ 0 050% DAC1210LCJ-1 0 050% DAC1230LCJ 0 018% DAC1230LCJ-1 0 018% DAC1231LCJ 0 024% DAC1231LCJ-1 0 024% DAC1231LCN 0 024% DAC1231LCWM 0 024% DAC1231LIN 0 024% DAC1232LCJ 0 050% DAC1232LCJ-1 0 050% DAC1232LCN 0 050% DAC1232LCWM 0 050% DAC1232LIN 0 050% Temperature Package ...
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... Physical Dimensions inches (millimeters) 20-Lead Ceramic Dual-In-Line Package (J) Order Number DAC1230LCJ DAC1230LCJ-1 DAC1231LCJ DAC1231LCJ-1 DAC1232LCJ or DAC1232LCJ-1 24-Lead Ceramic Dual-In-Line Package (J) Order Number DAC1208LCJ DAC1208LCJ-1 DAC1209LCJ DAC1210LCJ or DAC1210LCJ-1 NS Package Number J20A NS Package Number J24A 17 ...
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... Hong Kong Ltd 49) 0-180-530 85 86 13th Floor Straight Block a Ocean Centre 5 Canton Rd 49) 0-180-530 85 85 Tsimshatsui Kowloon a Tel ( 49) 0-180-532 78 32 Hong Kong a 49) 0-180-532 93 58 Tel (852) 2737-1600 a Tel ( 49) 0-180-534 16 80 Fax (852) 2736-9960 a National Semiconductor Japan Ltd Tel 81-043-299-2309 Fax 81-043-299-2408 ...