參數資料
型號: MAX5893EGK+TD
廠商: Maxim Integrated Products
文件頁數: 13/32頁
文件大?。?/td> 0K
描述: IC DAC 12BIT DUAL 500MSPS 68-QFN
產品培訓模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝: 2,500
設置時間: 11ns
位數: 12
數據接口: 并聯(lián)
轉換器數目: 2
電壓電源: 模擬和數字
功率耗散(最大): 511mW
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 68-VFQFN 裸露焊盤
供應商設備封裝: 68-QFN 裸露焊盤(10x10)
包裝: 帶卷 (TR)
輸出數目和類型: 2 電流,單極
采樣率(每秒): 500M
MAX5893
The programmable interpolation filters multiply the
MAX5893 input data rate by a factor of 2x, 4x, or 8x to
separate the reconstructed waveform spectrum and the
DAC image. The original spectral images, appearing at
around multiples of the input data rate, are attenuated
by the internal digital filters. This feature provides three
benefits:
1) Image separation reduces complexity of analog
reconstruction filters.
2) Lower input data rates eliminate board-level high-
speed data transmission.
3) Sin(x)/x rolloff is reduced over the effective bandwidth.
Figure 9 illustrates a practical example of the benefits
when using the MAX5893 in 2x, 4x, and 8x interpolation
modes with the third filter configured as a lowpass filter.
With no interpolation filter, the first image signal appears
in the second Nyquist zone between fS/2 and fS. The first
interpolating filter removes this image. In fact, all of the
12-Bit, 500Msps Interpolating and Modulating
Dual DAC with CMOS Inputs
20
______________________________________________________________________________________
Figure 9. Spectral Representation of Interpolating Filter Responses (Output Frequencies are Relative to the Data Input Frequency, fS)
fS
2fS
3fS
4fS
5fS
6fS
7fS
8fS
fS
2fS
3fS
4fS
5fS
6fS
7fS
8fS
fS
2fS
3fS
4fS
5fS
6fS
7fS
8fS
fS
2fS
3fS
4fS
5fS
6fS
7fS
8fS
fS
2fS
3fS
4fS
5fS
6fS
7fS
8fS
fS
2fS
3fS
4fS
5fS
6fS
7fS
8fS
FILTER
RESPONSE
FILTER
RESPONSE
FILTER
RESPONSE
INPUT
SPECTRUM
AND FIRST
FILTER
RESPONSE
OUTPUT
SPECTRUM
OF THE
FIRST
FILTER
INPUT
SPECTRUM
AND
SECOND
FILTER
RESPONSE
OUTPUT
SPECTRUM
OF THE
SECOND
FILTER
INPUT
SPECTRUM
AND THIRD
FILTER
RESPONSE
OUTPUT
SPECTRUM
OF THE
THIRD
FILTER
2x INTERPOLATION
4x INTERPOLATION
8x INTERPOLATION
NO INTERPOLATION
SIGNAL
IMAGE
SIGNAL
IMAGE
SIGNAL
IMAGE
SIGNAL
IMAGE
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MAX5894EGK-D 功能描述:數模轉換器- DAC RoHS:否 制造商:Texas Instruments 轉換器數量:1 DAC 輸出端數量:1 轉換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間:1 us 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube