AD9854ASTZ Analog Devices Inc, AD9854ASTZ Datasheet - Page 16

• Manufacturer Part Number: AD9854ASTZ
• Description: IC DDS QUADRATURE CMOS 80-LQFP
• Manufacturer: Analog Devices Inc

Specifications of AD9854ASTZ

• Package / Case: 80-LQFP
• Resolution (bits): 12 b
• Master Fclk: 300MHz
• Tuning Word Width (bits): 48 b
• Voltage - Supply: 3.14 V ~ 3.47 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Supply Voltage Range: 3.135V To 3.465V
• Operating Temperature Range: -40°C To +85°C
• Digital Ic Case Style: LQFP
• No. Of Pins: 80
• Svhc: No SVHC (18-Jun-2010)
• Base Number: 9854
• Ic Function: Direct Digital Synthesizer
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: AD9854/PCBZ - BOARD EVAL FOR AD9854
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

AD9854
TYPICAL APPLICATIONS
RF IN
Rx
VCA
INPUT
RF/IF
FUNDAMENTAL
Q BASEBAND
I BASEBAND
AD9854
Figure 28. Using an Aliased Image to Generate a High Frequency
ADC CLOCK FREQUENCY
Figure 27. Chip Rate Generator in Spread Spectrum Application
SPECTRUM
F
IMAGE
REFCLK
C
AD9854
LOCKED TO Tx CHIP/
REFCLK
Figure 26. Direct Conversion Quadrature Upconverter
LOW-PASS
– F
I/Q MIXER
SYMBOL/PN RATE
REFERENCE
FILTER
O
AND
CLOCK
F
Figure 25. Quadrature Downconversion
CLK
I
OUT
AD9854
AD9854
F
50Ω
IMAGE
C
+ F
Q
I
Rev. E | Page 16 of 52
O
BAND-PASS
GENERATOR
FILTER
8-/10-BIT
AD9854
CLOCK
DUAL
LPF
LPF
ADC
LPF
LPF
ADC ENCODE
FINAL OUTPUT
50 Ω
SPECTRUM
COS
SIN
COS
SIN
CHIP/SYMBOL/PN
8
8
48
RATE DATA
AMPLIFIER
CHANNEL
SELECT
FILTERS
LPF
LPF
DEMODULATOR
DIGITAL
F
IMAGE
C
+ F
I BASEBAND
Q BASEBAND
RF OUTPUT
O
BAND-PASS
FILTER
AGC
Rx BASEBAND
DIGITAL DATA
OUT