Datasheet

AD9786
Rev. B | Page 43 of 56
DATADJ[3:0]
DAC CLOCK
RECEIVED CHANNEL
DATA RATE CLOCK
LOCAL CHANNEL
DATA RATE CLOCK
0000 00011111
03152-082
–1 +1
Figure 82. Local Channel Data Rate Clock Synchronized with Offset
1
fs/2
STATE 2 3 4 5 6 7 8 9 10 11 12 13 4 1510
0 1
03152-083
DECODE 0 0 0 0 0 –1 0 0 0 0 01 1/ 2 –1/ 2 –1/ 2 –1/ 2
fs/4 1 2 30
fs/8 12345670
Figure 83. Digital Modulator State Machine Decode
MODADJ[2:0]
DAC CLOCK
STATE MACHINE
CYCLE CLOCK
000 101010
STATE
MACHINE
MODULATOR
COEFFICIENT
03152-084
–1 0 1 0 –1 0 0 –1 0 1 0 –1 0
14150123 1501 15012
Figure 84. Local Modulator Coefficient Synchronized with Offset