AOUT
參數(shù)資料
型號: AD9854/PCBZ
廠商: Analog Devices Inc
文件頁數(shù): 10/52頁
文件大小: 0K
描述: BOARD EVAL FOR AD9854
產(chǎn)品培訓(xùn)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(jì)資源: AD9854 Eval Brd Schematic
AD9854 Eval Brd BOM
標(biāo)準(zhǔn)包裝: 1
系列: AgileRF™
主要目的: 計(jì)時(shí),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 18 of 52
CLOCK OUT = 200MHz
LPF
SIN
LPF
AD9854
COS
REFERENCE
CLOCK
COMPARATORS
AOUT = 100MHz
00
6
36
-03
3
Figure 33. Clock Frequency Doubler
PROCESSOR/
CONTROLLER
FPGA, ETC.
RSET
8-BIT PARALLEL OR
SERIAL PROGRAMMING
DATA AND CONTROL
SIGNALS
AD9854
+
REFERENCE
CLOCK
300MHz MAX DIRECT
MODE OR 15MHz TO 75MHz
MAX IN THE 4× TO 20×
CLOCK
MULTIPLIER MODE
2k
I DAC
1
2
Q DAC OR
CONTROL
DAC
LOW-PASS
FILTER
LOW-PASS
FILTER
00
636
-034
NOTES
1. IOUT = APPROX 20mA MAX WHEN RSET = 2k.
2. SWITCH POSITION 1 PROVIDES COMPLEMENTARY
SINUSOIDAL SIGNALS TO THE COMPARATOR
TO PRODUCE A FIXED 50% DUTY CYCLE FROM THE
COMPARATOR.
3. SWITCH POSITION 2 PROVIDES THE SAME DUTY CYCLE
USING QUADRATURE SINUSOIDAL SIGNALS TO THE
COMPARATOR OR A DC THRESHOLD VOLTAGE TO
ALLOW SETTING OF THE COMPARATOR DUTY CYCLE
(DEPENDS ON THE CONFIGURATION OF THE Q DAC).
CMOS LOGIC CLOCK OUT
Figure 34. Frequency Agile Clock Generator Applications for the AD9854
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