AD9850BRSZ Analog Devices Inc, AD9850BRSZ Datasheet - Page 10

• Manufacturer Part Number: AD9850BRSZ
• Description: IC DDS SYNTHESIZER CMOS 28-SSOP
• Manufacturer: Analog Devices Inc

Specifications of AD9850BRSZ

• Mounting Type: Surface Mount
• Resolution (bits): 10 b
• Master Fclk: 125MHz
• Tuning Word Width (bits): 32 b
• Voltage - Supply: 3.3V, 5V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SSOP
• Rf Ic Case Style: SSOP
• No. Of Pins: 28
• Supply Voltage Range: 4.75V To 5.25V, 3.3V
• Operating Temperature Range: -40°C To +85°C
• Msl: MSL 3 - 168 Hours
• Frequency Max: 125MHz
• Current Rating: 30A
• Frequency: 125MHz
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD9850
Word
W0
W1
W2
W3
W4
Data[7]
Phase-b4
(MSB)
Freq-b31
(MSB)
Freq-b23
Freq-b15
Freq-b7
COS OUT
W CLK
FQ UD
CLKIN
DATA
Data[6]
Phase-b3
Freq-b30
Freq-b22
Freq-b14
Freq-b6
*OUTPUT UPDATE CAN OCCUR AFTER ANY WORD LOAD
AND IS ASYNCHRONOUS WITH THE REFERENCE CLOCK
Table III. 8-Bit Parallel Load Data/Control Word Functional Assignment
Figure 6. Parallel Load Frequency/Phase Update Timing Sequence
t
DS
W0*
t
Table II. Factory Reserved Internal Test Control Codes
DH
SYMBOL
t
t
t
t
t
t
t
t
t
DS
DH
WH
WL
CD
FH
FL
FD
CF
Loading Format
Parallel
Serial
Data[5]
Phase-b2
Freq-b29
Freq-b21
Freq-b13
Freq-b5
W1
t
DATA SETUP TIME
DATA HOLD TIME
W CLK HIGH
W CLK LOW
CLK DELAY AFTER FQ_UD
FQ UD HIGH
FQ UD LOW
FQ UD DELAY AFTER W CLK
OUTPUT LATENCY FROM FQ UD
DEFINITION
FL
t
W2
WH
t
WL
Data[4]
Phase-b1
Freq-b28
Freq-b20
Freq-b12
Freq-b4
W3
FREQUENCY CHANGE
PHASE CHANGE
–10–
Factory Reserved Codes
1) W0 = XXXXXX10
2) W0 = XXXXXX01
1) W32 = 1; W33 = 0
2) W32 = 0; W33 = 1
3) W32 = 1; W33 = 1
W4
t
FD
t
Data[3]
Phase-b0
(LSB)
Freq-b27
Freq-b19
Freq-b11
Freq-b3
CD
t
FH
MINIMUM
3.5ns
3.5ns
3.5ns
3.5ns
3.5ns
7.0ns
7.0ns
7.0ns
18 CLOCK CYCLES
13 CLOCK CYCLES
OLD FREQ (PHASE)
t
CF
Data[2]
Power-Down
Freq-b26
Freq-b18
Freq-b10
Freq-b2
NEW FREQ (PHASE)
VALID DATA
Data[1]
Control
Freq-b25
Freq-b17
Freq-b9
Freq-b1
Data[0]
Control
Freq-b24
Freq-b16
Freq-b8
(LSB)
Freq-b0
REV. H