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| 型号： | AD9834BRUZ-REEL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 16/32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) |
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Data Sheet
AD9834
Rev. D | Page 23 of 32
APPLICATIONS INFORMATION
Because of the various output options available from the part,
the AD9834 can be configured to suit a wide variety of
applications.
One of the areas where the AD9834 is suitable is in modulation
applications. The part can be used to perform simple modulation
such as FSK. More complex modulation schemes such as GMSK
and QPSK can also be implemented using the AD9834.
In an FSK application, the two frequency registers of the
AD9834 are loaded with different values. One frequency
represents the space frequency, and the other represents the
mark frequency. The digital data stream is fed to the FSELECT
pin, causing the AD9834 to modulate the carrier frequency
between the two values.
The AD9834 has two phase registers, enabling the part to
perform PSK. With phase shift keying, the carrier frequency is
phase shifted, the phase being altered by an amount that is
related to the bit stream that is input to the modulator.
The AD9834 is also suitable for signal generator applications.
With the on-board comparator, the device can be used to
generate a square wave.
With its low current consumption, the part is suitable for
applications where it is used as a local oscillator.
CHANGE PHASE?
CHANGE FREQUENCY?
NO
YES
NO
YES
NO
YES
DAC OUTPUT
VOUT = VREFOUT × 18 × RLOAD/RSET × (1 + (SIN(2π(FREQREG × fMCLK × t/228 + PHASEREG/212))))
INITIALIZATION
SEE FIGURE 32
SELECT DATA
SOURCES
SEE FIGURE 34
WAIT 8/9 MCLK
CYCLES
SEE TIMING DIAGRAM
FIGURE 3
CHANGE PSEL/
PSELECT?
CHANGE PHASE
REGISTER?
CHANGE DAC OUTPUT
FROM SIN TO RAMP?
CHANGE OUTPUT AT
SIGN BIT OUT PIN?
CHANGE FSEL/
FSELECT?
CHANGE FREQUENCY
REGISTER?
CONTROL
REGISTER
WRITE
DATA WRITE
SEE FIGURE 33
0
270
5-
0
28
Figure 31. Flow Chart for Initialization and Operation
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| AD9834CRUZ | 功能描述:IC DDS 10BIT 75MHZ LP 20-TSSOP RoHS:是 类别:集成电路 (IC) >> 接口 - 直接数字合成 (DDS) 系列:- 产品变化通告:Product Discontinuance 27/Oct/2011 标准包装:2,500 系列:- 分辨率（位）:10 b 主 fclk:25MHz 调节字宽（位）:32 b 电源电压:2.97 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:带卷 (TR) |
| AD9834CRUZ-REEL7 | 功能描述:IC DDS 10BIT 75MHZ LP 20-TSSOP RoHS:是 类别:集成电路 (IC) >> 接口 - 直接数字合成 (DDS) 系列:- 产品变化通告:Product Discontinuance 27/Oct/2011 标准包装:2,500 系列:- 分辨率（位）:10 b 主 fclk:25MHz 调节字宽（位）:32 b 电源电压:2.97 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:带卷 (TR) |
| AD9835 | 制造商:AD 制造商全称:Analog Devices 功能描述:50 MHz CMOS Complete DDS |
| AD9835BRU | 功能描述:IC DDS DAC 10BIT 50MHZ 16-TSSOP RoHS:否 类别:集成电路 (IC) >> 接口 - 直接数字合成 (DDS) 系列:- 产品变化通告:Product Discontinuance 27/Oct/2011 标准包装:2,500 系列:- 分辨率（位）:10 b 主 fclk:25MHz 调节字宽（位）:32 b 电源电压:2.97 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:带卷 (TR) |
| AD9835BRU-REEL | 制造商:Analog Devices 功能描述:Direct Digital Synthesizer 50MHz 1-DAC 10-Bit Serial 16-Pin TSSOP T/R 制造商:Analog Devices 功能描述:DGTL SYNTHESIZER 16TSSOP - Tape and Reel |
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