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AD5122 Datasheet(PDF) 10 Page - Analog Devices

Part No. AD5122
Description  Dual Channel, 128-/256-Position, SPI, Nonvolatile Digital Potentiometer
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD5122 Datasheet(HTML) 10 Page - Analog Devices

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AD5122/AD5142
Data Sheet
Rev. C | Page 10 of 32
SHIFT REGISTER AND TIMING DIAGRAMS
DATA BITS
DB8
DB15 (MSB)
DB0 (LSB)
D7
D6
D5
D4
D3
D2
D1
D0
ADDRESS BITS
A0
A1
A2
C2
C1
C0
A3
C3
CONTROL BITS
DB7
Figure 2. Input Shift Register Contents
C3
t4
t2
t3
t5
t6
C2
C1
C0
D7
D6
D5
D2
D1
D0
SDI
*PREVIOUS COMMAND RECEIVED.
SCLK
SYNC
C3*
SDO
C2*
C1*
C0*
D7*
D6*
D5*
D2*
D1*
D0*
t8
t9
t10
t7
t1
Figure 3. SPI Serial Interface Timing Diagram, Clock Polarity (CPOL) = 0, Clock Phase (CPHA) = 1
C3
t4
t2
t3
t5
t6
C2
C1
C0
D7
D6
D5
D2
D1
D0
SDI
*PREVIOUS COMMAND RECEIVED.
SCLK
SYNC
C3*
SDO
C2*
C1*
C0*
D7*
D6*
D5*
D2*
D1*
D0*
t8
t9
t10
t7
t1
Figure 4. SPI Serial Interface Timing Diagram, Clock Polarity (CPOL) = 1, Clock Phase (CPHA) = 0
SCLK
SYNC
RESET
t1
Figure 5. Control Pins Timing Diagram


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