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參數(shù)資料
| 型號(hào)： | AD9913 |
| 廠商： | Analog Devices, Inc. |
| 元件分類(lèi)： | XO, clock |
| 英文描述： | Low Power 250 MSPS 10-Bit DAC 1.8 V CMOS Direct Digital Synthesizer |
| 中文描述： | 低功耗250 MSPS的10位DAC 1.8伏CMOS直接數(shù)字頻率合成器 |
| 文件頁(yè)數(shù)： | 13/32頁(yè) |
| 文件大小： | 473K |
| 代理商： | AD9913 |
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AD9913
AUXILIARY ACCUMULATOR
In addition to the phase accumulator of the DDS, the AD9913
has an auxiliary accumulator. This accumulator can be con-
figured to support either an automatic sweep of one of the
programmable characteristics of the DDS output (frequency or
phase), or it can be configured to implement a change in the
denominator of the frequency equation given in the DDS Core
section. For further details, refer to the Programmable Modulus
Mode section.
10-BIT DAC
The AD9913 incorporates an integrated 10-bit, current output
DAC. The output current is delivered as a balanced signal using
two outputs. The use of balanced outputs reduces the potential
amount of common-mode noise present at the DAC output,
offering the advantage of an increased signal-to-noise ratio. An
external resistor (R
SET
) connected between the RSET pin and
AGND establishes the reference current. The full-scale output
current of the DAC (I
OUT
) is produced as a scaled version of the
reference current. The recommended value of R
SET
is 4.62 kΩ.
The following equation computes the typical full-scale current
with respect to the R
set
resistor value and the gain control
setting:
0206
.
)
,
(
Rev. 0 | Page 13 of 32
(
)
x
R
R
x
I
SET
SET
OUT
+
×
=
1
The DAC is designed to operate with full-scale current values
up to 4.58 mA. Based on the equation and assuming a 4.62 kΩ
resistor value for R
SET
, and x = 0x1FF, the nominal output
current for the DAC is 2.28 mA.
Figure 17 shows the range of DAC output current vs. the DAC
FS value assuming an R
SET
value of 4.62 kΩ.
5
0
0
1200
DAC CODE
D
4
3
2
1
200
400
600
800
1000
0
Figure 21. DAC Output Current vs. DAC FS Bits
Pay careful attention to the load termination to ensure that the
output voltage remains within the specified compliance range;
voltages developed beyond this range cause excessive distortion
and can damage the DAC output circuitry.
I/O PORT
The AD9913 I/O port can be configured as a synchronous serial
communications port that allows easy interface to many industry-
standard microcontrollers and microprocessors. The serial I/O port
is compatible with most synchronous transfer formats, including
both the Motorola 6905/11 SPI and Intel 8051 SSR protocols. For
faster programming requirements, a parallel mode is also provided.
PROFILE SELECTIONS
The AD9913 supports the use of profiles, which consist of a group
of eight registers containing pertinent operating parameters for
a particular operating mode. Profiles enable rapid switching
between parameter sets. Profile parameters are programmed via
the I/O port. Once programmed, a specific profile is activated
by means of Register CFR1 Bits [22:20], or three external profile
select pins. The external profile pins option is only available in
serial mode.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD9913/PCBZ | 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開(kāi)發(fā)工具 Sub 50mW 250MSPS (+) 10-bit DDS RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類(lèi)型:ADC 工具用于評(píng)估:ADS130E08 接口類(lèi)型:SPI 工作電源電壓:- 6 V to + 6 V |
| AD9913/PCBZ1 | 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:Low Power 250 MSPS 10-Bit DAC 1.8 V CMOS Direct Digital Synthesizer |
| AD9913BCPZ | 功能描述:IC DDS 10BIT DAC 250MSPS 32LFCSP RoHS:是 類(lèi)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(lèi)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) |
| AD9913BCPZ1 | 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:Low Power 250 MSPS 10-Bit DAC 1.8 V CMOS Direct Digital Synthesizer |
| AD9913BCPZ-REEL7 | 功能描述:IC DDS 250MSPS 10BIT ADC 32LFCSP RoHS:是 類(lèi)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(lèi)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) |
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