參數(shù)資料
型號(hào)： DAC5674EVM
廠商： Texas Instruments
文件頁(yè)數(shù)： 10/39頁(yè)
文件大小： 0K
描述： EVAL MODULE FOR DAC5674
產(chǎn)品培訓(xùn)模塊： Data Converter Basics
標(biāo)準(zhǔn)包裝： 1
系列： CommsDAC™
DAC 的數(shù)量： 1
位數(shù)： 14
采樣率（每秒）： 400M
數(shù)據(jù)接口： 并聯(lián)
設(shè)置時(shí)間： 20ns
DAC 型： 電流
工作溫度： -40°C ~ 85°C
已供物品： 板
已用 IC / 零件： DAC5674
相關(guān)產(chǎn)品： DAC5674IPHPRG4-ND - IC DAC 14BIT 400MSPS 48-HTQFP
DAC5674IPHPR-ND - IC DAC 14BIT 400MSPS 48-HTQFP
DAC5674IPHPG4-ND - IC DAC 14BIT 400MSPS 48-HTQFP
296-15726-ND - IC DAC 14BIT 400MSPS 48-HTQFP
其它名稱(chēng)： 296-30860
DAC5674EVM-ND
DAC5674
SLWS148A SEPTEMBER 2003 REVISED OCTOBER 2005
www.ti.com
18
High-Pass/High-Pass 4
y Interpolation Filter Operation
Figure 19 shows the high-pass/high-pass filter configuration. The transition bands of filter 1 and filter 2 allow
for the placement of the fundamental IF between 0.2
…0.4Fdata. In this configuration, the user can select the
images at Fdata + IF and 3Fdata – IF. For Fdata = 100 MSPS and a fundamental IF of 0.4 × Fdata = 40 MHz, this
would translate into images located at 140 MHz and 260 MHz. Note that this is the equivalent of mixing a 60-MHz
analog IF signal with a 200-MHz sine wave.
Input Spectrum
Output of DUC
1st 2x
interpolation
filter
Spectrum after
2x interpolation
2nd 2x
interpolation
filter
Spectrum after
4x interpolation
Fdata
=
Fdac
80 dB of
attenuation
Unwanted images
removed by HPF
80 dB of
attenuation
80 dB of
attenuation
Unwanted images
removed by HPF
Figure 19. High-Pass/High-Pass 4
y Interpolation Filter Operation
DAC Sinx/x Output Attenuation
The output frequency spectrum of the DACs shows some inherent attenuation due to their sample-and-hold
nature. The output of the DAC is normally seen as the signal sample held over the sampling time in a stair-step
manner. In the time domain, this step-like output can be thought of as an impulse sample of some value
convolved with a unit-square pulse with a duration of the sampling time. In the frequency domain, this translates
to the frequency response of the discretely sampled signal multiplied by the sinx/x frequency response function
of the square pulse. The sinx/x function has a null at every integer multiple of the sampling rate.
This is shown in Figure 20 for various data rates at 4
× interpolation.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DAC5674IPHP 功能描述:數(shù)模轉(zhuǎn)換器- DAC 14-Bit 400 CommsDAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類(lèi)型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube
DAC5674IPHPG4 功能描述:數(shù)模轉(zhuǎn)換器- DAC 14-Bit 400 CommsDAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類(lèi)型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube
DAC5674IPHP-ND 制造商: 功能描述: 制造商:undefined 功能描述:
DAC5674IPHPR 功能描述:數(shù)模轉(zhuǎn)換器- DAC 14-Bit 400 CommsDAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類(lèi)型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube
DAC5674IPHPRG4 功能描述:數(shù)模轉(zhuǎn)換器- DAC 14-Bit 400 CommsDAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類(lèi)型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube
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