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| 型號： | AD9833BRMZ-REEL |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 9/24頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC WAVEFORM GEN PROG 10MSOP |
| 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 |
| 標(biāo)準(zhǔn)包裝： | 3,000 |
| 分辨率（位）： | 10 b |
| 主 fclk： | 25MHz |
| 調(diào)節(jié)字寬（位）： | 28 b |
| 電源電壓： | 2.3 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 105°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 10-TFSOP，10-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 10-MSOP |
| 包裝： | 帶卷 (TR) |
Data Sheet
AD9833
Rev. E | Page 17 of 24
APPLICATIONS INFORMATION
Because of the various output options available from the part,
the AD9833 can be configured to suit a wide variety of applications.
One of the areas where the AD9833 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 AD9833.
In an FSK application, the two frequency registers of the AD9833
are loaded with different values. One frequency represents the
space frequency, while the other represents the mark frequency.
Using the FSELECT bit in the control register of the AD9833, the
user can modulate the carrier frequency between the two values.
The AD9833 has two phase registers, which enables 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 being input to the modulator.
The AD9833 is also suitable for signal generator applications.
Because the MSB of the DAC data is available at the VOUT pin,
the device can be used to generate a square wave.
With its low current consumption, the part is suitable for
applications in which it can be used as a local oscillator.
GROUNDING AND LAYOUT
The printed circuit board (PCB) that houses the AD9833 should be
designed so that the analog and digital sections are separated
and confined to certain areas of the board. This facilitates the
use of ground planes that can be separated easily. A minimum
etch technique is generally best for ground planes because it gives
the best shielding. Digital and analog ground planes should be
joined in one place only. If the AD9833 is the only device requiring
an AGND-to-DGND connection, then the ground planes should
be connected at the AGND and DGND pins of the AD9833. If
the AD9833 is in a system where multiple devices require AGND-
to-DGND connections, the connection should be made at one
point only, a star ground point that should be established as
close as possible to the AD9833.
Avoid running digital lines under the device as these couple noise
onto the die. The analog ground plane should be allowed to run
under the AD9833 to avoid noise coupling. The power supply
lines to the AD9833 should use as large a track as possible to
provide low impedance paths and reduce the effects of glitches
on the power supply line. Fast switching signals, such as clocks,
should be shielded with digital ground to avoid radiating noise
to other sections of the board.
Avoid crossover of digital and analog signals. Traces on opposite
sides of the board should run at right angles to each other. This
reduces the effects of feedthrough through the board. A microstrip
technique is by far the best, but it is not always possible with a
double-sided board. In this technique, the component side of
the board is dedicated to ground planes, and signals are placed
on the other side.
Good decoupling is important. The AD9833 should have supply
bypassing of 0.1 μF ceramic capacitors in parallel with 10 μF
tantalum capacitors. To achieve the best performance from the
decoupling capacitors, they should be placed as close as possible
to the device, ideally right up against the device.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| AD9833BRMZ-REEL7 | 功能描述:IC WAVEFORM GEN PROG 10MSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 直接數(shù)字合成 (DDS) 系列:- 產(chǎn)品變化通告:Product Discontinuance 27/Oct/2011 標(biāo)準(zhǔn)包裝:2,500 系列:- 分辨率（位）:10 b 主 fclk:25MHz 調(diào)節(jié)字寬（位）:32 b 電源電壓:2.97 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:帶卷 (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 制造商全稱: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 制造商全稱:Analog Devices 功能描述:20 mW Power, 2.3 V to 5.5 V,75 MHz Complete DDS |
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