參數(shù)資料
型號: AD9854/PCBZ
廠商: Analog Devices Inc
文件頁數(shù): 8/52頁
文件大?。?/td> 0K
描述: BOARD EVAL FOR AD9854
產(chǎn)品培訓模塊: Direct Digital Synthesis Tutorial Series (1 of 7): Introduction
Direct Digital Synthesizer Tutorial Series (7 of 7): DDS in Action
Direct Digital Synthesis Tutorial Series (3 of 7): Angle to Amplitude Converter
Direct Digital Synthesis Tutorial Series (6 of 7): SINC Envelope Correction
Direct Digital Synthesis Tutorial Series (4 of 7): Digital-to-Analog Converter
Direct Digital Synthesis Tutorial Series (2 of 7): The Accumulator
設(shè)計資源: AD9854 Eval Brd Schematic
AD9854 Eval Brd BOM
標準包裝: 1
系列: AgileRF™
主要目的: 計時,直接數(shù)字合成(DDS)
已用 IC / 零件: AD9854
已供物品:
相關(guān)產(chǎn)品: AD9854ASTZ-ND - IC DDS QUADRATURE CMOS 80-LQFP
AD9854
Rev. E | Page 16 of 52
TYPICAL APPLICATIONS
LPF
REFCLK
RF/IF
INPUT
I BASEBAND
COS
LPF
AD9854
Q BASEBAND
LPF
SIN
00
636
-02
5
CHANNEL
SELECT
FILTERS
Figure 25. Quadrature Downconversion
LPF
REFCLK
COS
LPF
AD9854
SIN
RF OUTPUT
I BASEBAND
Q BASEBAND
00
63
6-
02
6
Figure 26. Direct Conversion Quadrature Upconverter
I
Q
Rx
RF IN
DUAL
8-/10-BIT
ADC
DIGITAL
DEMODULATOR
Rx BASEBAND
DIGITAL DATA
OUT
8
I/Q MIXER
AND
LOW-PASS
FILTER
VCA
ADC ENCODE
ADC CLOCK FREQUENCY
LOCKED TO Tx CHIP/
SYMBOL/PN RATE
REFERENCE
CLOCK
48
CHIP/SYMBOL/PN
RATE DATA
AD9854
CLOCK
GENERATOR
AGC
0063
6-
027
Figure 27. Chip Rate Generator in Spread Spectrum Application
50
BAND-PASS
FILTER
50
IOUT
AD9854
FUNDAMENTAL
FC –FO
IMAGE
FCLK
FC +FO
IMAGE
BAND-PASS
FILTER
FC +FO
IMAGE
AD9854
SPECTRUM
FINAL OUTPUT
SPECTRUM
AMPLIFIER
00
63
6-
028
Figure 28. Using an Aliased Image to Generate a High Frequency
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