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DAC4814BP Datasheet(PDF) 11 Page - Burr-Brown (TI) |
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DAC4814BP Datasheet(HTML) 11 Page - Burr-Brown (TI) |
11 / 12 page 11 ® DAC4814 FIGURE 3. Analog Connections for ±10V DAC Output. FIGURE 4. Analog Connections for 0 to +10V DAC Output. 0 To –10V Output Range For 0 to –10V unipolar outputs connect the DAC4814 as shown in Figure 5. Connect the MODE to logic low (GND) for reset to unipolar zero. CONNECTION TO DIGITAL BUS Cascaded Bus Connection Multiple DAC4814s can be connected to the same CLK and DATA input lines in two ways. Since the output of the DAC shift register is available, any number of DAC4814s can be cascaded on the same input bit stream as shown in Figure 6. This arrangement allows all DACs in the system to be updated simultaneously and requires a minimum number of control signal inputs. However, up to 48N CLK cycles may be required to update any given DAC, where N = number of DAC4814s. Parallel Bus Connection Several DAC4814s can also have their DATA inputs con- nected in parallel as shown in Figure 7. This allows any DAC in the system to be updated in a maximum of 48 CLK cycles. 20k Ω 20k Ω 20k Ω 20k Ω 10k Ω A 10k Ω V A OUT V D OUT 10V Ref DAC A DAC D DAC4814 + + 28 15 7 –15V 1µF +15V 1µF 1µF +5V 13 5 2 6 10 11 3 4 5 A 1 A 4 + +5V 20k Ω 20k Ω V C OUT DAC C 8 14 9 A 3 20k Ω 20k Ω V B OUT DAC B 1 A 2 17 12 DGND AGND 25 MODE Serial Data and Control In 20k Ω 20k Ω 20k Ω 20k Ω 10k Ω A 10k Ω V A OUT V D OUT 10V Ref DAC A DAC D DAC4814 + + 28 15 7 –15V 1µF +15V 1µF 1µF +5V 13 5 2 6 10 11 3 4 17 12 DGND AGND 5 A 1 A 4 + 25 MODE 20k Ω 20k Ω V C OUT DAC C 8 14 9 A 3 20k Ω 20k Ω V B OUT DAC B 1 A 2 Serial Data and Control In |
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