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參數資料
型號: AD9957_07
廠商: Analog Devices, Inc.
英文描述: 1 GSPS Quadrature Digital Upconverter with 18-Bit IQ Data Path and 14-Bit DAC
中文描述: 1 GSPS的正交數字上變頻器與18位智商數據路徑和14位DAC
文件頁數: 19/60頁
文件大小: 840K
代理商: AD9957_07
AD9957
SINGLE TONE MODE
A block diagram of the AD9957 operating in the single tone
mode is shown in Figure 29; grayed items are inactive. In this
mode, both I and Q data paths are disabled from the 18-bit
parallel data port up to, and including, the modulator. The
internal DDS core produces a single frequency signal based on
the programmed tuning word. The user may select either the
Rev. 0 | Page 19 of 60
cosine or sine output of the DDS. The sinusoid at the DDS
output can be scaled using a 14-bit amplitude scale factor (ASF)
and optionally routed through the inverse sinc filter.
Single tone mode offers the output shift keying (OSK) function.
It provides the ability to ramp the amplitude scale factor
between zero and an arbitrary preset value over a
programmable time interval.
0
PDCLK
I/Q IN
E
DAC_RSET
IOUT
IOUT
TxENABLE
FTW
PW
DAC GAIN
θ
cos (
ω
t+
θ
)
I
S
F
CLOCK
F
P
8
SYSCLK
PLL
÷2
C
REF_CLK
REF_CLK
REFCLK_OUT
XTAL_SEL
PARALLEL DATA
TIMING AND CONTROL
AD9957
ω
sin (
ω
t+
θ
)
S
S
P
P
M
2
2
C
O
DDS
AUX
DAC
8-BIT
POWER
DOWN
CONTROL
R
RAM
P
C
I
S
S
SERIAL I/O
PORT
I
PROGRAMMING
REGISTERS
3
2
I Q
IS QS
10
D
I
Q
IS
QS
B
18
18
16
16
H
F
I
C
C
(
H
F
I
C
C
(
OSK
INTERNAL CLOCK TIMING AND CONTROL
DAC
14-BIT
OUTPUT
SCALE
FACTOR
Figure 29. Single Tone Mode
相關PDF資料
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相關代理商/技術參數
參數描述
AD9957BCPZ 制造商:Analog Devices 功能描述:GSPS QUADRATURE DIGITAL UPCONVERTER W/18-BIT IQ DATA PATH - Trays
AD9957BSVZ 功能描述:IC DDS 1GSPS 14BIT IQ 100TQFP 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)
AD9957BSVZ-REEL 功能描述:IC DDS 1GSPS 14BIT IQ 100TQFP 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)
AD9957BSVZREEL13 制造商:AD 制造商全稱:Analog Devices 功能描述:1 GSPS Quadrature Digital Upconverter w/18-Bit IQ Data Path and 14-Bit DAC
AD9958 制造商:AD 制造商全稱:Analog Devices 功能描述:2-Channel 500 MSPS DDS with 10-Bit DACs
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