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参数资料
| 型号： | HI5731-EVS |
| 厂商： | Intersil |
| 文件页数： | 4/10页 |
| 文件大小： | 0K |
| 描述： | EVALUATION PLATFORM SOIC HI5731 |
| 标准包装： | 1 |
| DAC 的数量： | 1 |
| 位数： | 12 |
| 采样率（每秒）： | 100M |
| 数据接口： | 并联 |
| 设置时间： | 20ns |
| DAC 型： | 电流 |
| 工作温度： | -40°C ~ 85°C |
| 已供物品： | 板 |
| 已用 IC / 零件： | HI5731 |
Application Note 9602
The Evaluation Board
The HI5731 Evaluation board is a 1/2 size daughter board
designed to interface to the HSP-EVAL board. When used
0
FUNDAMENTAL
together these boards create a flexible and powerful DDS
system. The HSP45116 board is used to generate the high
speed digital sine wave patterns for the D/A module. The
HI5731 board reconstructs the incoming digital data to an
AMPLITUDE
(dB)
-50
(PURE TONE)
analog representation that can be analyzed on a spectrum
analyzer or oscilloscope.
-85
NOISE FLOOR
Plugging In
After setting-up the HSP45116 board and the HI5731 board;
power should be applied to the banana jacks. A +5V, and a
-5.2V supply will be needed. To reduce noise the power
1MHz
f N
FIGURE 8. FREQUENCY PLOT OF 1MHz TONE
f
supply leads should be twisted pairs.
Connect the interface cable to an IBM PC or compatible’s
parallel port. Power should be applied to the board and then
run the software directly from ?oppy disk. To run the software
place the ?oppy disk into drive A: and type:
A: NCOMCTRL
The fundamental of a pure 1MHz tone should appear as an
impulse in the frequency domain at 1MHz. In a sampled
system noise terms are produced near the sampling
frequencies called aliases. These aliases are related to the
fundamental in that they are located at ± f N around the
sampling frequency as shown in Figure 9.
the HSP45116 Control Panel will be loaded. To exercise the
board the following parameters should be set:
BINFMT# = 0
0
FUNDAMENTAL
SAMPLING FUNCTION
(SIN X)/X
AMPLITUDE
and then set the Center Frequency to:
CENTER FREQUENCY = 01000000 HEX
where the center frequency is in hex. At this point the output
(dB)
-50
ALIAS
(f S - 1MHz)
of the HI5731 DAC module should be converting a sine wave
at 48kHz. Connect the output of the HI5731 module to an
oscilloscope.
-85
1MHz
f N
4MHz
f S
f
DDS Interface
The HSP45116 board is a TTL/CMOS compatible logic
board. The HI5731 is a TTL/CMOS compatible logic D/A
converter. The design of the DAC module is to interface to
the 10 Most Signi?cant Bits of the NCO. The HI5731 module
should be plugged into P2 of the HSP-EVAL board.
Spurious Free Dynamic Range
The Spurious Free Dynamic Range of the HI5731 DAC is the
most important speci?cation for communication applications.
This speci?cation shows how Integral Linearity, Glitch, and
Switching noise affect the spectral purity of the output signal.
Several important things must be noted ?rst.
When a quantized signal is reconstructed, certain artifacts
are created. Let’s take the example of trying to recreate a
1MHz sine wave with a 1V P-P output. In the frequency
domain the fundamental should appear at 1MHz as shown in
Figure 8.
3-4
FIGURE 9. SAMPLING ALIAS PRODUCTS
So for a 1MHz fundamental and a 5MHz sampling rate an
alias term is created at 4MHz and 6MHz. A (SIN)/X function
shaping is also induced by sampling a signal. Aliases
continue up through the frequency spectrum repeating
around the sampling frequency and its harmonics (i.e. 2f S ,
3f S , 4f S ).
A reconstructed sine wave out of the HI5731 is not ideal and
as such has harmonics of the fundamental. The difference
between the magnitude of the fundamental and the highest
noise spur whether it is harmonically related to the
fundamental or not, is the de?nition of Spurious Free
Dynamic Range. Figures 10, through 15 are sample plots
taken of the HI5731 at various frequencies. Included are the
oscilloscope plots.
相关PDF资料 |
PDF描述 |
|---|---|
| HI5741-EVS | EVALUATION PLATFORM HI5741 |
| HI5760EVAL1 | EVALUATION PLATFORM SOIC HI5760 |
| HI5762EVAL2 | EVALUATION MOD FOR HI5762 AMP |
| HI5767EVAL1 | EVALUATION PLATFORM HI5767 |
| HI5767EVAL2 | EVALUATION PLATFORM HI5767 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| HI5735 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:12-Bit, 80 MSPS, High Speed Video D/A Converter |
| HI5735_04 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:12-Bit, 80 MSPS, High Speed Video D/A Converter |
| HI5735KCB | 功能描述:IC DAC 12-BIT 80MSPS 28-SOIC RoHS:否 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:- 标准包装:2,400 系列:- 设置时间:- 位数:18 数据接口:串行 转换器数目:3 电压电源:模拟和数字 功率耗散（最大）:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:36-TFBGA 供应商设备封装:36-TFBGA 包装:带卷 (TR) 输出数目和类型:* 采样率（每秒）:* |
| HI5735KCBS2503 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| HI5735KCBZ | 功能描述:数模转换器- DAC 28 COMTEMP D/A 12 BIT 80 MHZ -5 2V RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
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