参数资料
型号: AD9833BRMZ
厂商: Analog Devices Inc
文件页数: 10/24页
文件大小: 0K
描述: IC WAVEFORM GENERTR PROG 10-MSOP
产品培训模块: 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
标准包装: 50
分辨率(位): 10 b
主 fclk: 25MHz
调节字宽(位): 28 b
电源电压: 2.3 V ~ 5.5 V
工作温度: -40°C ~ 105°C
安装类型: 表面贴装
封装/外壳: 10-TFSOP,10-MSOP(0.118",3.00mm 宽)
供应商设备封装: 10-MSOP
包装: 管件
产品目录页面: 797 (CN2011-ZH PDF)
AD9833
Data Sheet
Rev. E | Page 18 of 24
DATA WRITE
(SEE FIGURE 28)
SELECT DATA
SOURCES
WAIT 7/8 MCLK
CYCLES
VOUT = VREF × 18 × RLOAD / RSET × (1 + (SIN (2π (FREQREG × fMCLK × t/228 + PHASEREG / 212))))
DAC OUTPUT
CHANGE PHASE?
CHANGE FREQUENCY?
CHANGE DAC OUTPUT
FROM SIN TO RAMP?
CHANGE OUTPUT TO
A DIGITAL SIGNAL?
CHANGE
PSELECT?
CHANGE PHASE
REGISTER?
CHANGE
FSELECT?
CHANGE FREQUENCY
REGISTER?
CONTROL REGISTER
WRITE
(SEE TABLE 6)
INITIALIZATION
(SEE FIGURE 27 BELOW)
NO
YES
NO
YES
NO
YES
02704-
026
Figure 26. Flowchart for AD9833 Initialization and Operation
INITIALIZATION
APPLY RESET
(CONTROL REGISTER WRITE)
RESET = 1
WRITE TO FREQUENCY AND PHASE REGISTERS
FREQ0 REG =
fOUT0/fMCLK × 228
FREQ1 REG =
fOUT1/fMCLK × 228
PHASE0 AND PHASE1 REG = (PHASESHIFT × 212
)/2π
(SEE FIGURE 28)
SET RESET = 0
SELECT FREQUENCY REGISTERS
SELECT PHASE REGISTERS
(CONTROL REGISTER WRITE)
RESET BIT = 0
FSELECT = SELECTED FREQUENCY REGISTER
PSELECT = SELECTED PHASE REGISTER
02704-
027
Figure 27. Flowchart for Initialization
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