LTC2752 Linear Technology, LTC2752 Datasheet - Page 17

• Manufacturer Part Number: LTC2752
• Description: Dual16-Bit SoftSpan IOUT DACs
• Manufacturer: Linear Technology

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 LTC2752
defaults to DAC A.
SRO
SDI
C3
A3
0
0
0
0
0
0
1
1
1
1
1
1
1
0
0
1
C2
0
0
1
1
1
1
0
0
0
0
1
1
1
A2
CODE
0
0
1
–
–
WRITE CODE
C1
1
1
0
0
1
1
0
0
1
1
0
0
1
DAC A
...
A1
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
REGISTER DAC A
WRITE CODE
CODE INPUT
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
DAC B
No Operation
System Clear
READ
COMMAND
All DACs (Note 1)
DAC A
DAC B
n
Figure 4. Rolling Readback
REGISTER DAC B
WRITE SPAN
CODE INPUT
DAC C
READ
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
S3
0
0
0
0
0
0
REGISTER DAC A
S2
WRITE SPAN
SPAN INPUT
0
0
0
0
1
1
–
–
DAC B
READ
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
REGISTER DAC B
SPAN INPUT
ALL DACs
UPDATE
READ
Input Span Register DAC n
Input Code Register DAC n
DAC Span Register DAC n
DAC Code Register DAC n
DAC Span Register DAC n
DAC Code Register DAC n
DAC Span Register DAC n
DAC Code Register DAC n
DAC Span Register DAC A
DAC Span Register DAC A
DAC Code Register DAC n
NEXT INPUT WORD W
READBACK POINTER–
www.DataSheet4U.com
LTC2752
REGISTER DAC A
CODE DAC
READ
...
+1

2754 F04
2752f