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參數資料
| 型號： | AD9913BCPZ-REEL7 |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 5/32頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DDS 250MSPS 10BIT ADC 32LFCSP |
| 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： | 1,500 |
| 分辨率（位）： | 10 b |
| 主 fclk： | 250MHz |
| 調節(jié)字寬（位）： | 32 b |
| 電源電壓： | 1.8V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 32-VFQFN 裸露焊盤，CSP |
| 供應商設備封裝： | 32-LFCSP-VQ（5x5） |
| 包裝： | 帶卷 (TR) |
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AD9913
Rev. A | Page 13 of 32
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 (RSET) connected between the RSET pin and
AGND establishes the reference current. The full-scale output
current of the DAC (IOUT) is produced as a scaled version of the
reference current. The recommended value of RSET is 4.62 kΩ.
The following equation computes the typical full-scale current
with respect to the Rset resistor value and the gain control
setting:
()
x
R
x
I
SET
OUT
+
×
=
1
0206
.
0
)
,
(
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 RSET, 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 RSET value of 4.62 kΩ.
5
0
1200
DAC CODE
DAC
F
UL
L
-S
CAL
E
CUR
RE
NT
(
m
A)
4
3
2
1
200
400
600
800
1000
07
00
2-
0
16
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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相關代理商/技術參數 |
參數描述 |
|---|---|
| AD9913BCPZ-REEL71 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Power 250 MSPS 10-Bit DAC 1.8 V CMOS Direct Digital Synthesizer |
| AD9914 | 制造商:AD 制造商全稱:Analog Devices 功能描述:3.5 GSPS Direct Digital Synthesizer with 12-Bit DAC |
| AD9914/PCBZ | 功能描述:數據轉換 IC 開發(fā)工具 3.5 GSPS DDS w/Upconverter eval bd. RoHS:否 制造商:Texas Instruments 產品:Demonstration Kits 類型:ADC 工具用于評估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V |
| AD9914BCPZ | 功能描述:數據轉換 IC - 多種 3.5 GSPS DDS w/Upconverter RoHS:否 制造商:Texas Instruments 轉換器數量:1 分辨率:8 bit 工作電源電壓:2.7 V to 5.5 V 功耗: 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:MSOP-10 封裝:Reel |
| AD9914BCPZ-REEL7 | 功能描述:數據轉換 IC - 多種 3.5 GSPS DDS w/Upconverter RoHS:否 制造商:Texas Instruments 轉換器數量:1 分辨率:8 bit 工作電源電壓:2.7 V to 5.5 V 功耗: 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:MSOP-10 封裝:Reel |
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