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DAC8564 数据表(PDF) 31 Page - Texas Instruments

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部件名 DAC8564
功能描述  14-Bit, Quad Channel, Ultra-Low Glitch, Voltage Output Digital-to-Analog Converter with 2.5V, 2ppmC Internal Reference
PDF  47 Pages
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

DAC8564 数据表(HTML) 31 Page - Texas Instruments

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DAC8165
www.ti.com
SBAS409B
– FEBRUARY 2008 – REVISED MARCH 2011
OPERATING EXAMPLES: DAC8165
For the following examples, X = don't care; value can be either '0' or '1'.
Example 1: Write to Data Buffer A Through Buffer D; Load DAC A Through DAC D Simultaneously
•
1st: Write to data buffer A:
DB23
DB22
DB21
DB20
DB19
DB18
DB17
DB16
DB15
DB14
DB13
DB12-DB2
DB1-DB0
(LD1)
(LD0)
(DAC Sel 1) (DAC Sel 0)
(PD0)
0
0
0
0
0
0
0
0
D13
D12
D11
D10-D0
X
•
2nd: Write to data buffer B:
DB23
DB22
DB21
DB20
DB19
DB18
DB17
DB16
DB15
DB14
DB13
DB12-DB2
DB1-DB0
(LD1)
(LD0)
(DAC Sel 1) (DAC Sel 0)
(PD0)
0
0
0
0
0
0
1
0
D13
D12
D11
D10-D0
X
•
3rd: Write to data buffer C:
DB23
DB22
DB21
DB20
DB19
DB18
DB17
DB16
DB15
DB14
DB13
DB12-DB2
DB1-DB0
(LD1)
(LD0)
(DAC Sel 1) (DAC Sel 0)
(PD0)
0
0
0
0
0
1
0
0
D13
D12
D11
D10-D0
X
•
4th: Write to data buffer D and simultaneously update all DACs:
DB23
DB22
DB21
DB20
DB19
DB18
DB17
DB16
DB15
DB14
DB13
DB12-DB2
DB1-DB0
(LD1)
(LD0)
(DAC Sel 1) (DAC Sel 0)
(PD0)
0
0
1
0
0
1
1
0
D13
D12
D11
D10-D0
X
The DAC A, DAC B, DAC C, and DAC D analog outputs simultaneously settle to the specified values upon
completion of the 4th write sequence. (The DAC voltages update simultaneously after the 24th SCLK falling edge
of the fourth write cycle).
Example 2: Load New Data to DAC A Through DAC D Sequentially
•
1st: Write to data buffer A and load DAC A: DAC A output settles to specified value upon completion:
DB23
DB22
DB21
DB20
DB19
DB18
DB17
DB16
DB15
DB14
DB13
DB12-DB2
DB1-DB0
(LD1)
(LD0)
(DAC Sel 1) (DAC Sel 0)
(PD0)
0
0
0
1
0
0
0
0
D13
D12
D11
D10-D0
X
•
2nd: Write to data buffer B and load DAC B: DAC B output settles to specified value upon completion:
DB23
DB22
DB21
DB20
DB19
DB18
DB17
DB16
DB15
DB14
DB13
DB12-DB2
DB1-DB0
(LD1)
(LD0)
(DAC Sel 1) (DAC Sel 0)
(PD0)
0
0
0
1
0
0
1
0
D13
D12
D11
D10-D0
X
•
3rd: Write to data buffer C and load DAC C: DAC C output settles to specified value upon completion:
DB23
DB22
DB21
DB20
DB19
DB18
DB17
DB16
DB15
DB14
DB13
DB12-DB2
DB1-DB0
(LD1)
(LD0)
(DAC Sel 1) (DAC Sel 0)
(PD0)
0
0
0
1
0
1
0
0
D13
D12
D11
D10-D0
X
•
4th: Write to data buffer D and load DAC D: DAC D output settles to specified value upon completion:
DB23
DB22
DB21
DB20
DB19
DB18
DB17
DB16
DB15
DB14
DB13
DB12-DB2
DB1-DB0
(LD1)
(LD0)
(DAC Sel 1) (DAC Sel 0)
(PD0)
0
0
0
1
0
1
1
0
D13
D12
D11
D10-D0
X
After completion of each write cycle, DAC analog output settles to the voltage specified.
Copyright
© 2008–2011, Texas Instruments Incorporated
Submit Documentation Feedback
31
Product Folder Link(s): DAC8165



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