AD9833BRMZ-REEL7 Analog Devices Inc, AD9833BRMZ-REEL7 Datasheet - Page 18

• Manufacturer Part Number: AD9833BRMZ-REEL7
• Description: 10 Bit, 10 Pin DDS I.C.
• Manufacturer: Analog Devices Inc

Specifications of AD9833BRMZ-REEL7

• Resolution (bits): 10 b
• Master Fclk: 25MHz
• Tuning Word Width (bits): 28 b
• Voltage - Supply: 2.3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 105°C
• Mounting Type: Surface Mount
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: EVAL-AD9833EBZ - BOARD EVAL FOR AD9833
• Lead Free Status / Rohs Status: Compliant

AD9833
YES
YES
CHANGE FREQUENCY
CONTROL REGISTER
V
OUT
(SEE TABLE 15)
REGISTER?
FSELECT?
CHANGE
= V
WRITE
REF
NO
Figure 26. Flow Chart for AD9833 Initialization and Operation
× 18 × R
PHASE0 AND PHASE1 REG = (PHASESHIFT × 2
WRITE TO FREQUENCY AND PHASE REGISTERS
LOAD
FSELECT = SELECTED FREQUENCY REGISTER
PSELECT = SELECTED PHASE REGISTER
YES
YES
YES
/ R
SELECT FREQUENCY REGISTERS
SET
FREQ0 REG =
FREQ1 REG =
(CONTROL REGISTER WRITE)
(CONTROL REGISTER WRITE)
SELECT PHASE REGISTERS
× (1 + (SIN (2π (FREQREG ×
Figure 27. Initialization
Rev. C | Page 18 of 24
CHANGE FREQUENCY?
CHANGE DAC OUTPUT
FROM SIN TO RAMP?
CHANGE OUTPUT TO
(SEE FIGURE 28)
A DIGITAL SIGNAL?
INITIALIZATION
SET RESET = 0
CHANGE PHASE?
APPLY RESET
RESET BIT = 0
(SEE FIGURE 28)
SELECT DATA
WAIT 8/9 MCLK
RESET = 1
DAC OUTPUT
DATA WRITE
SOURCES
CYCLES
f
f
OUT0
OUT1
NO
NO
NO
NO
/
/
f
f
MCLK
MCLK
× 2
× 2
28
28
f
MCLK
YES
12
×
)/2π
t
/2
28
(SEE FIGURE 27 BELOW)
+ PHASEREG / 2
CHANGE PHASE
INITIALIZATION
REGISTER?
PSELECT?
CHANGE
NO
YES
12
))))
YES