AD9857 Analog Devices, AD9857 Datasheet - Page 18

• Manufacturer Part Number: AD9857
• Description: CMOS 200 MSPS 14-Bit Quadrature Digital Upconverter
• Manufacturer: Analog Devices

AD9857
Figures 25 and 26 illustrate the Data Write and Data Read
operations on the AD9857 serial port:
SCLK
SDIO
CS
SCLK
SDIO
SDO
CS
SYMBOL
t
t
t
t
t
t
t
PRE
SCLK
DSU
SCLKPWH
SCLKPWL
DHLD
PRE
SYMBOL
t
DV
t
DSU
t
1ST BIT
SCLKPWH
DEFINITION
CS SETUP TIME
PERIOD OF SERIAL DATA CLOCK
SERIAL DATA SETUP TIME
SERIAL DATA CLOCK PULSEWIDTH HIGH
SERIAL DATA CLOCK PULSEWIDTH LOW
SERIAL DATA HOLD TIME
t
DHLD
DEFINITION
DATA VALID TIME
1ST BIT
t
SCLK
t
SCLKPWL
t
DV
2ND BIT
2ND BIT
MIN
40ns
100ns
30ns
40ns
40ns
0ns
MAX
30ns