参数资料
型号: AD9834BRUZ-REEL7
厂商: Analog Devices Inc
文件页数: 17/32页
文件大小: 0K
描述: IC DDS 10BIT 50MHZ LP 20TSSOP
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
设计资源: Amplitude Control Circuit for AD9834 Waveform Generator (CN0156)
标准包装: 1,000
分辨率(位): 10 b
主 fclk: 50MHz
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: 20-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 20-TSSOP
包装: 带卷 (TR)
AD9834
Data Sheet
INITIALIZATION
APPLY RESET
USING PIN
SET RESET PIN = 1
USING PIN
USING CONTROL
BIT
(CONTROL REGISTER WRITE)
RESET = 1
PIN/SW = 0
(CONTROL REGISTER WRITE)
PIN/SW = 1
USING CONTROL
BIT
SET RESET = 0
SELECT FREQUENCY REGISTERS
SELECT PHASE REGISTERS
(CONTROL REGISTER WRITE)
RESET BIT = 0
FSEL = SELECTED FREQUENCY REGISTER
PSEL = SELECTED PHASE REGISTER
PIN/SW = 0
(APPLY SIGNALS AT PINS)
RESET PIN = 0
FSELECT = SELECTED FREQUENCY REGISTER
PSELECT = SELECTED PHASE REGISTER
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 33)
02705-
029
Figure 32. Initialization
NO
YES
DATA WRITE
NO
YES
NO
YES
NO
YES
WRITE A FULL 28-BIT WORD
TO A FREQUENCY REGISTER?
(CONTROL REGISTER WRITE)
B28 (D13) = 1
WRITE TWO CONSECUTIVE
16-BIT WORDS
(SEE TABLE 11 FOR EXAMPLE)
WRITE ANOTHER FULL
28-BIT TO A
FREQUENCY REGISTER?
WRITE 14 MSBs OR LSBs
TO A FREQUENCY REGISTER?
(CONTROL REGISTER WRITE)
B28 (D13) = 0
HLB (D12) = 0/1
WRITE A 16-BIT WORD
(SEE TABLES 12 AND 13
FOR EXAMPLES)
WRITE 14 MSBs OR LSBs
TO A
FREQUENCY REGISTER?
WRITE TO PHASE
REGISTER?
D15, D14 = 11
D13 = 0/1 (CHOOSE THE
PHASE REGISTER)
D12 = X
D11 ... D0 = PHASE DATA
(16-BIT WRITE)
WRITE TO ANOTHER
PHASE REGISTER?
02705-
030
Figure 33. Data Write
Rev. D | Page 24 of 32
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