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| 型号： | AD9913BCPZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 5/32页 |
| 文件大小： | 0K |
| 描述： | IC DDS 10BIT DAC 250MSPS 32LFCSP |
| 产品培训模块： | 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 |
| 标准包装： | 1 |
| 分辨率（位）： | 10 b |
| 主 fclk： | 250MHz |
| 调节字宽（位）： | 32 b |
| 电源电压： | 1.8V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-VFQFN 裸露焊盘，CSP |
| 供应商设备封装： | 32-LFCSP-VQ（5x5） |
| 包装： | 托盘 |
| 产品目录页面： | 552 (CN2011-ZH PDF) |
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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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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD9913BCPZ1 | 制造商:AD 制造商全称: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 类别:集成电路 (IC) >> 接口 - 直接数字合成 (DDS) 系列:- 产品变化通告:Product Discontinuance 27/Oct/2011 标准包装:2,500 系列:- 分辨率（位）:10 b 主 fclk:25MHz 调节字宽（位）:32 b 电源电压:2.97 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:带卷 (TR) |
| AD9913BCPZ-REEL71 | 制造商:AD 制造商全称: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 制造商全称:Analog Devices 功能描述:3.5 GSPS Direct Digital Synthesizer with 12-Bit DAC |
| AD9914/PCBZ | 功能描述:数据转换 IC 开发工具 3.5 GSPS DDS w/Upconverter eval bd. RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
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