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參數資料
| 型號： | AD9958BCPZ |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 模擬信號調理 |
| 英文描述： | 2-Channel 500 MSPS DDS with 10-Bit DACs |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, QCC56 |
| 封裝： | 8 X 8 MM, LEAD FREE, MO-220-VLLD-2, LFCSP-56 |
| 文件頁數： | 25/40頁 |
| 文件大?。?/td> | 1051K |
| 代理商： | AD9958BCPZ |
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AD9958
Rev. 0 | Page 25 of 40
FTW0
SINGLE–TONE
MODE
LINEAR SWEEP MODE ENABLE, NO-DWELL BIT SET
FTW1
A
A
A
B
B
B
F
OUT
TIME
PS<2> = 1 PS<2> = 0
PS<2> = 0
PS<2> = 1
PS<2> = 1
PS<2> = 0
0
Figure 37.
FTW0
SINGLE–TONE
MODE
LINEAR SWEEP MODE
AT POINT A: LOAD RISING RAMP RATE REGISTER, APPLY RISING DFTW.
AT POINT B: LOAD FALLING RAMP RATE REGISTER, APPLY FALLING DFTW.
PS<2> = 1
PS<2> = 0
PS<2> = 0
TIME
FTW1
A
B
F
OUT
0
Figure 38. Linear Sweep with the No-Dwell Feature Disabled
SWEEP AND PHASE ACCUMULATOR CLEARING
FUNCTIONS
The AD9958 allows two different clearing functions. The first
is a continuous zeroing of the sweep logic and phase accumu-
lator (clear and hold). The second is a clear and release or
automatic zeroing function. CFR <4> is the automatic clear
sweep accumulator bit and CFR <2> is the automatic clear
phase accumulator bit. The continuous clear bits are located in
CFR, where CFR <3> clears the sweep accumulator and
CFR <1> clears the phase accumulator.
Continuous Clear Bits
The continuous clear bits are static control signals that, when
active high, hold the respective accumulator at 0 while the bit is
active. When the bit goes low, the respective accumulator is
allowed to operate.
Clear and Release Bits
The auto clear sweep accumulator bit, when set, clears and
releases the sweep accumulator upon an I/O update or a change
in the profile input pins. The auto clear phase accumulator,
when set, clears and releases the phase accumulator upon an
I/O update or a change in the profile pins. The automatic clear-
ing function is repeated for every subsequent I/O update or
change in profile pins until the clear and release bits are reset
via the serial port.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AD9958BCPZ-REEL7 | 功能描述:IC DDS DUAL 10BIT DAC 56LFCSP 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(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） 供應商設備封裝:16-TSSOP 包裝:帶卷 (TR) |
| AD9959 | 制造商:AD 制造商全稱:Analog Devices 功能描述:4 Channel 500MSPS DDS with 10-bit DACs |
| AD9959/PCBZ | 功能描述:BOARD EVALUATION FOR AD9959 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:- 標準包裝:1 系列:PSoC® 主要目的:電源管理，熱管理 嵌入式:- 已用 IC / 零件:- 主要屬性:- 次要屬性:- 已供物品:板，CD，電源 |
| AD9959/PCBZ | 制造商:Analog Devices 功能描述:AD9959, DDS, DAC, GUI, USB, EVALUATION B |
| AD9959/PCBZ1 | 制造商:AD 制造商全稱:Analog Devices 功能描述:4-Channel, 500 MSPS DDS with 10-Bit DACs |
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