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ManualsBrandsTEXAS INSTRUMENTS ManualsData collecting ICsData acquisition IC - DA converter (DAC) TSSOP 16
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DAC7565
SBAS412B –FEBRUARY 2008–REVISED MARCH 2011
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Example 3: Power-Down DAC A and DAC B to 1kΩ and Power-Down DAC C and DAC D to 100kΩ
Simultaneously
• 1st: Write power-down command to data buffer A: DAC A to 1kΩ.
DB23 DB22 DB21 DB20 DB19 DB18 DB17 DB16 DB15 DB14 DB13 DB12-DB4 DB3-DB0
(LD1) (LD0) (DAC Sel 1) (DAC Sel 0) (PD0)
0 0 0 0 0 0 0 1 0 1 X X X
• 2nd: Write power-down command to data buffer B: DAC B to 1kΩ.
DB23 DB22 DB21 DB20 DB19 DB18 DB17 DB16 DB15 DB14 DB13 DB12-DB4 DB3-DB0
(LD1) (LD0) (DAC Sel 1) (DAC Sel 0) (PD0)
0 0 0 0 0 0 1 1 0 1 X X X
• 3rd: Write power-down command to data buffer C: DAC C to 100kΩ.
DB23 DB22 DB21 DB20 DB19 DB18 DB17 DB16 DB15 DB14 DB13 DB12-DB4 DB3-DB0
(LD1) (LD0) (DAC Sel 1) (DAC Sel 0) (PD0)
0 0 0 0 0 1 0 1 1 0 X X X
• 4th: Write power-down command to data buffer D: DAC D to 100kΩ and simultaneously update all DACs.
DB23 DB22 DB21 DB20 DB19 DB18 DB17 DB16 DB15 DB14 DB13 DB12-DB4 DB3-DB0
(LD1) (LD0) (DAC Sel 1) (DAC Sel 0) (PD0)
0 0 1 0 0 1 1 1 1 0 X X X
The DAC A, DAC B, DAC C, and DAC D analog outputs simultaneously power-down to each respective specified
mode upon completion of the fourth write sequence.
Example 4: Power-Down DAC A Through DAC D to High-Impedance Sequentially
• 1st: Write power-down command to data buffer A and load DAC A: DAC A output = Hi-Z:
DB23 DB22 DB21 DB20 DB19 DB18 DB17 DB16 DB15 DB14 DB13 DB12-DB4 DB3-DB0
(LD1) (LD0) (DAC Sel 1) (DAC Sel 0) (PD0)
0 0 0 1 0 0 0 1 1 1 X X X
• 2nd: Write power-down command to data buffer B and load DAC B: DAC B output = Hi-Z:
DB23 DB22 DB21 DB20 DB19 DB18 DB17 DB16 DB15 DB14 DB13 DB12-DB4 DB3-DB0
(LD1) (LD0) (DAC Sel 1) (DAC Sel 0) (PD0)
0 0 0 1 0 0 1 1 1 1 X X X
• 3rd: Write power-down command to data buffer C and load DAC C: DAC C output = Hi-Z:
DB23 DB22 DB21 DB20 DB19 DB18 DB17 DB16 DB15 DB14 DB13 DB12-DB4 DB3-DB0
(LD1) (LD0) (DAC Sel 1) (DAC Sel 0) (PD0)
0 0 0 1 0 1 0 1 1 1 X X X
• 4th: Write power-down command to data buffer D and load DAC D: DAC D output = Hi-Z:
DB23 DB22 DB21 DB20 DB19 DB18 DB17 DB16 DB15 DB14 DB13 DB12-DB4 DB3-DB0
(LD1) (LD0) (DAC Sel 1) (DAC Sel 0) (PD0)
0 0 0 1 0 1 1 1 1 1 X X X
The DAC A, DAC B, DAC C, and DAC D analog outputs sequentially power-down to high-impedance upon
completion of the first, second, third, and fourth write sequences, respectively.
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