AD5161 Analog Devices, AD5161 Datasheet - Page 5

• Manufacturer Part Number: AD5161
• Description: 256-Position SPI/I2C Selectable Digital Potentiometer
• Manufacturer: Analog Devices

256 Position Digital Potentiometer
SPI Interface
TABLE 1: AD5161 Serial-Data Word Format
B7
D7
MSB
2
REV PrB, 13 DEC’ 02
7
B6
D6
B5
D5
B4
D4
(Data In)
VOUT
Figure 1B. Detail Timing Diagram(
CLK
SDI
CS
B3
D3
V DD
0
1
0
1
0
1
0
B2
D2
t C SH 0
B1
D1
LSB
B0
D0
t C SS
2
0
Dx
t C H
V
A
= 5V, V
t D S
Dx
t CL
B
- 5 -
= 0V, V
Figure 1A. AD5161 Timing Diagram(
V
VOUT
W
SDI
CLK
OUT
CS
= V
)
t DH
OUT
1
0
1
0
1
0
1
0
)
t C SH 1
D7
D6
t CS 1
D5
DAC REGISTER LOAD
D4
t S
t CS W
D3
D2
D1
±1 LSB
V
A
D0
= 5V, V
AD5161
B
= 0V, V
W
=