AD5290
Data Sheet
3-WIRE DIGITAL INTERFACE
Data is loaded MSB first.
1
0
SDI
(DATA IN)
D
D
X
X
Table 4. AD5290 Serial Data-Word Format
tDS
tDH
B7
D7
MSB
27
B6
B5
B4
B3
B2
B1
B0
D0
LSB
20
1
0
SDO
D'
D'
X
X
D6
D5
D4
D3
D2
D1
(DATA OUT)
tPD_MAX
tCH
1
0
tCS1
CLK
tCSH0
tCL
1
0
1
0
1
0
1
0
SDI
CLK
CS
D7 D6 D5 D4 D3 D2 D1
D0
tCSH
tCSS
1
tCSW
tS
CS
0
V
RDAC REGISTER LOAD
DD
V
OUT
±1 LSB ERROR BAND
0V
V
OUT
±1 LSB
Figure 2. AD5290 3-Wire Digital Interface Timing Diagram
(VA = VDD, VB = 0 V, VW = VOUT
Figure 3. Detail Timing Diagram
)
Rev. C | Page 8 of 20