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參數資料
| 型號： | AD9954YSVZ-REEL7 |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 1/40頁 |
| 文件大小： | 0K |
| 描述： | IC DDS DAC 14BIT 1.8V 48TQFP |
| 產品培訓模塊： | 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 |
| 標準包裝： | 500 |
| 分辨率（位）： | 14 b |
| 主 fclk： | 400MHz |
| 調節字寬（位）： | 32 b |
| 電源電壓： | 1.71 V ~ 1.96 V |
| 工作溫度： | -40°C ~ 105°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 48-TQFP 裸露焊盤 |
| 供應商設備封裝： | 48-TQFP 裸露焊盤（7x7） |
| 包裝： | 帶卷 (TR) |
| 配用： | AD9954/PCBZ-ND - BOARD EVAL FOR 9954 |
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400 MSPS, 14-Bit, 1.8 V CMOS,
Direct Digital Synthesizer
AD9954
Rev. B
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
2003–2009 Analog Devices, Inc. All rights reserved.
FEATURES
400 MSPS internal clock speed
Integrated 14-bit DAC
Programmable phase/amplitude dithering
32-bit frequency tuning accuracy
14-bit phase tuning accuracy
Phase noise better than –120 dBc/Hz
Excellent dynamic performance
>80 dB narrowband SFDR
Serial I/O control
Ultrahigh speed analog comparator
Automatic linear and nonlinear frequency sweeping
4 frequency/phase offset profiles
1.8 V power supply
Software and hardware controlled power-down
48-lead TQFP
Integrated 1024 word × 32-bit RAM
Support for 5 V input levels on most digital inputs
PLL-based REFCLK multiplier
Internal oscillator, can be driven by a single crystal
Phase modulation capability
Multichip synchronization
APPLICATIONS
Agile LO frequency synthesis
Programmable clock generators
FM chirp source for radar and scanning systems
Automotive radars
Test and measurement equipment
Acousto-optic device drivers
GENERAL DESCRIPTION
The AD9954 is a direct digital synthesizer (DDS) that uses
advanced technology, coupled with an internal high speed, high
performance DAC to form a complete, digitally programmable,
high frequency synthesizer capable of generating a frequency-
agile analog output sinusoidal waveform at up to 160 MHz.
The AD9954 enables fast frequency hopping coupled with fine
tuning of both frequency (0.01 Hz or better) and phase (0.022°
granularity).
The AD9954 is programmed via a high speed serial I/O port.
The device includes static RAM to support flexible frequency
sweep capability in several modes, plus a user-defined linear
sweep mode of operation. Also included is an on-chip high
speed comparator for applications requiring a square wave
output. An on-chip oscillator and PLL circuitry provide users
with multiple approaches to generate the device’s system clock.
The AD9954 is specified to operate over the extended industrial
temperature range (see Table 2).
BASIC BLOCK DIAGRAM
COMPARATOR
400MSPS
DDS CORE
14-BIT
DAC
REF CLOCK
INPUT CIRCUITRY
TIMING AND
CONTROL
DIGITAL
SINE
WAVE
USER INTERFACE
AD9954
03
37
4-
03
8
Figure 1.
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