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| 型号： | AD9833BRMZ-REEL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 3/24页 |
| 文件大小： | 0K |
| 描述： | IC WAVEFORM GEN PROG 10MSOP |
| 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： | 3,000 |
| 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： | 带卷 (TR) |
Data Sheet
AD9833
Rev. E | Page 11 of 24
THEORY OF OPERATION
Sine waves are typically thought of in terms of their magnitude
form: a(t) = sin(ωt). However, these sine waves are nonlinear and
not easy to generate except through piecewise construction. On
the other hand, the angular information is linear in nature. That
is, the phase angle rotates through a fixed angle for each unit of
time. The angular rate depends on the frequency of the signal
by the traditional rate of ω = 2πf.
MAGNITUDE
PHASE
+1
0
–1
2p
0
2π
4π
6π
2π
4π
6π
0
27
04
-02
3
Figure 23. Sine Wave
Knowing that the phase of a sine wave is linear and given a
reference interval (clock period), the phase rotation for that
period can be determined.
ΔPhase = ωΔt
Solving for ω,
ω = ΔPhase/Δt = 2πf
Solving for f and substituting the reference clock frequency for
the reference period (1/fMCLK = Δt)
f = ΔPhase × fMCLK∕2π
The AD9833 builds the output based on this simple equation. A
simple DDS chip can implement this equation with three major
subcircuits: numerically controlled oscillator (NCO) and phase
modulator, SIN ROM, and digital-to-analog converter (DAC).
Each subcircuit is described in the Circuit Description section.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD9833BRMZ-REEL7 | 功能描述:IC WAVEFORM GEN PROG 10MSOP 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) |
| AD9833SRMZ-EP-RL7 | 制造商:Analog Devices 功能描述:10 bit 10 pin DDS I.C. |
| AD9833WBRMZ-REEL | 制造商:Analog Devices 功能描述:10 BIT, 10 PIN DDS I.C. - Tape and Reel |
| AD9834 | 制造商:AD 制造商全称:Analog Devices 功能描述:Low Power, +2.3 V to +5.5 V, 50 MHz Complete DDS |
| AD9834_10 | 制造商:AD 制造商全称:Analog Devices 功能描述:20 mW Power, 2.3 V to 5.5 V,75 MHz Complete DDS |
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