dac1218 National Semiconductor Corporation, dac1218 Datasheet
dac1218
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dac1218 Summary of contents
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... DAC1218 DAC1219 12-Bit Binary Multiplying D A Converter General Description The DAC1218 and the DAC1219 are 12-bit binary 4-quad- rant multiplying converters The linearity differential non-linearity and monotonicity specifications for these con- verters are all guaranteed over temperature In addition these parameters are specified with standard zero and full- ...
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... Digital Inputs Digital Inputs e t Current Settling Time R 100X Output Settled 01% All Digital Inputs Switched Simultaneously Operating Conditions (Notes 1 and 2) Temperature Range DAC1218LCJ DAC1219LCJ DAC1218LCJ Range GND Voltage at Any Digital Input CC 25V 150 C ...
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... Note 5 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 DAC1218 is 0 012% of FSR This guarantees that after performing a REF ...
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... Settling time is the time required from a code transition until the DAC output reaches within g Full-scale Error Full-scale error is a measure of the output error between an ideal DAC and the actual device output b 10V Ideally for the DAC1218 full-scale 10V and REF e b ...
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... BASIC CIRCUIT DESCRIPTION Figure 1 illustrates the R-2R current switching ladder net- work used in the DAC1218 and DAC1219 As a function of the logic state of each digital input the binarily weighted current in each leg of the ladder is switched to either I ...
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Application Hints (Continued A12 OUT REF 4096 e where digital input is high digital input is low FIGURE ...
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Application Hints (Continued) FIGURE 4 Composite Output Amplifier Connection Diodes are 1N4148 FIGURE 5 DAC Settling Time Test Circuit Amplifier LM11 LF351 LF351 Composite LM11-LF351 LF356 FIGURE 6 Some Measured Settling Times C Settling Time ...
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Application Hints (Continued OBTAINING A BIPOLAR OUTPUT VOLTAGE FROM A FIXED REFERENCE The addition of a second op amp to the circuit of Figure 2 can generate a bipolar output voltage from a fixed reference voltage ( Figure ...
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Application Hints (Continued Zero and Full-Scale Adjustments The three adjustments needed for this circuit are shown in Figure 7 The first step is to set all of the digital inputs LOW (to force and then ...
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Additional Application Ideas Offsetting the Zero Code Output Voltage 2V R2 REF e V Zero Shift Amp ( 4096 (Continued) High Current Controller 5691 – 5691 – ...
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Additional Application Ideas C1 controls maximum frequency sine wave THD over range Range 30 kHz maximum Linearity DAC limit 4096 ( Digitally Programmable Pulse-Width Generator ...
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... Physical Dimensions inches (millimeters) Order Number DAC1218LCJ-1 DAC1218LCJ or DAC1219LCJ LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMICONDUCTOR CORPORATION As used herein 1 Life support devices or systems are devices or ...