LTC2754 LINER [Linear Technology], LTC2754 Datasheet - Page 14

• Manufacturer Part Number: LTC2754
• Description: Quad 12-/16-Bit SoftSpan IOUT DACs
• Manufacturer: LINER [Linear Technology]

LTC2754
OPERATION
Table 1. Command Codes
Codes not shown are reserved–do not use
Table 2. Address Codes
Codes not shown are reserved–do not use. × = Don’t Care.
Note 1. If readback is taken using the All DACs address, the LTC2754
defaults to DAC A.
14
C3
A3
0
0
0
0
0
0
1
1
1
1
1
1
1
0
0
0
0
1
C2
0
0
1
1
1
1
0
0
0
0
1
1
1
A2
CODE
0
0
1
1
1
–
–
C1
1
1
0
0
1
1
0
0
1
1
0
0
1
A1
0
1
0
1
1
C0
0
1
0
1
0
1
0
1
0
1
0
1
1
A0
×
×
×
×
×
Initial Power-Up or Power Interupt
Read Input Span Register DAC n
Read Input Code Register DAC n
Read DAC Span Register DAC n
Read DAC Code Register DAC n
Write Span DAC n
Write Code DAC n
Write Span DAC n
Write Code DAC n
Write Span DAC n
Write Code DAC n
Update All DACs
Update All DACs
Update All DACs
Update DAC n
Update DAC n
Update DAC n
No Operation
System Clear
COMMAND
All DACs (Note 1)
DAC D
DAC A
DAC B
DAC C
n
CURRENT INPUT WORD W
Set by Previous Command
Set by Previous Command
Set by Previous Command
Set by Previous Command
Set by Previous Command
Set by Previous Command
Set by Previous Command
Set by Previous Command
Set by Previous Command
READBACK POINTER–
Table 3. Span Codes
Codes not shown are reserved–do not use. × = Don’t Care.
S3
×
×
×
×
×
×
S2
0
0
0
0
1
1
–
–
S1
0
0
1
1
0
0
Input Span Register DAC n
Input Code Register DAC n
DAC Span Register DAC n
DAC Code Register DAC n
S0 SPAN
0
1
0
1
0
1
0
Unipolar 0V to 5V
Unipolar 0V to 10V
Bipolar –5V to 5V
Bipolar –10V to 10V
Bipolar –2.5V to 2.5V
Bipolar –2.5V to 7.5V
Input Span Register DAC n
Input Code Register DAC n
DAC Code Register DAC A
DAC Span Register DAC A
DAC Span Register DAC A
DAC Span Register DAC n
DAC Span Register DAC n
DAC Code Register DAC n
DAC Span Register DAC n
DAC Code Register DAC n
DAC Code Register DAC n
NEXT INPUT WORD W
READBACK POINTER–
+1
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