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參數資料
| 型號： | AD9834 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Low Power, +2.3 V to +5.5 V, 50 MHz Complete DDS |
| 中文描述： | 低功耗，2.3 V至5.5 V，50 MHz的完整的DDS |
| 文件頁數： | 1/20頁 |
| 文件大小： | 236K |
| 代理商： | AD9834 |
REV PrM 04/02
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
Low Power, +2.3 V to +5.5 V, 50 MHz
Complete DDS
AD9834
Preliminary Technical
Data
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106,U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
www.analog.com
Analog Devices, Inc., 2002
FEATURES
+2.3 V to +5.5 V Power Supply
50 MHz Speed
Low Jitter Clock Output
Sine Output/Triangular Output
Serial Loading
Power-Down Option
Narrowband SFDR > 72 dB
20 mW Power Consumption at 3 V
20-Pin TSSOP
APPLICATIONS
Test Equipment
Slow Sweep Generator
DDS Tuning
Digital Modulation
GENERAL DESCRIPTION
The AD9834 is a numerically controlled oscillator
employing a phase accumulator, a SIN ROM and a
10-bit D/A converter integrated on a single CMOS
chip. Clock rates up to 50 MHz are supported with a
power supply from 2.3 V to 5.5 V.
FUNCTIONAL BLOCK DIAGRAM
10-Bit
DAC
IOUT
COMP
REFOUT
FullScale
Control
FS ADJUST
AD9834
IOUTB
SIGN BIT OUT
COMPARATOR
VIN
MUX
Serial Interface
&
Control Logic
SCLK
SDATA
FSYNC
12 Bit PHASE1 REG
SLEEP
PSELECT
16 Bit Control
Register
SIN
ROM
MUX
28 Bit
FREQ0 REG
MCLK
FSELECT
28 Bit
FREQ1 REG
12
On-Board
Reference
AGND
AVDD
DGND
DVDD
Phase
Accumulator
(28 Bit)
MUX
Regulator
CAP/2.5V
VCC
2.5V
RESET
12 Bit PHASE0 REG
MSB
MUX
DIV BY
2
MUX
Capability for phase modulation and frequency modula-
tion is provided. Frequency accuracy can be controlled to
one part in 0.25 billion. Modulation is effected by loading
registers through the serial interface.
The AD9834 offers the user a variety of output
waveforms. The SIN ROM can be bypassed so that a
linear up/down ramp is output from the DAC. If the SIN
ROM is not by-passed, a sinusoidal output is available.
Also, if a clock output is required, the MSB of the DAC
data can be output, or the on-chip comparator can be
used.
The digital section is driven by an on-board regulator
which steps down the applied DVDD to +2.5 V when
DVDD exceeds +2.5 V. The analog and digital sections
are independent and can be run from different power
supplies e.g. AVDD can equals 5 V with DVDD equal to
3 V, etc.
The AD9834 has a power-down pin (SLEEP) which
allows external control of a power-down mode. Sections of
the device which are not being used can be powered down to
minimise the current consumption e.g. the DAC can be
powered down when a clock output is being generated.
The part is available in a 20-pin TSSOP package.
PRELIMINARY TECHNICAL DATA
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 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 |
| AD9834BRU | 功能描述:IC DDS W/COMP 2.3V 50MHZ 20TSSOP RoHS:否 類別:集成電路 (IC) >> 接口 - 直接數字合成 (DDS) 系列:- 產品變化通告:Product Discontinuance 27/Oct/2011 標準包裝:2,500 系列:- 分辨率（位）:10 b 主 fclk:25MHz 調節字寬（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） 供應商設備封裝:16-TSSOP 包裝:帶卷 (TR) |
| AD9834BRU-REEL | 功能描述:IC DDS 10BIT 50MHZ LP 20-TSSOP RoHS:否 類別:集成電路 (IC) >> 接口 - 直接數字合成 (DDS) 系列:- 產品變化通告:Product Discontinuance 27/Oct/2011 標準包裝:2,500 系列:- 分辨率（位）:10 b 主 fclk:25MHz 調節字寬（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） 供應商設備封裝:16-TSSOP 包裝:帶卷 (TR) |
| AD9834BRU-REEL7 | 功能描述:IC DDS 10BIT 50MHZ LP 20-TSSOP RoHS:否 類別:集成電路 (IC) >> 接口 - 直接數字合成 (DDS) 系列:- 產品變化通告:Product Discontinuance 27/Oct/2011 標準包裝:2,500 系列:- 分辨率（位）:10 b 主 fclk:25MHz 調節字寬（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） 供應商設備封裝:16-TSSOP 包裝:帶卷 (TR) |
| AD9834BRUZ | 功能描述:IC DDS 10BIT 50MHZ LP 20-TSSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 直接數字合成 (DDS) 系列:- 產品變化通告:Product Discontinuance 27/Oct/2011 標準包裝:2,500 系列:- 分辨率（位）:10 b 主 fclk:25MHz 調節字寬（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） 供應商設備封裝:16-TSSOP 包裝:帶卷 (TR) |
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