參數(shù)資料
型號(hào): AD9778BSVZ
廠商: Analog Devices Inc
文件頁數(shù): 42/56頁
文件大?。?/td> 0K
描述: IC DAC 14BIT DUAL 1GSPS 100TQFP
產(chǎn)品培訓(xùn)模塊: DAC Architectures
標(biāo)準(zhǔn)包裝: 1
位數(shù): 14
數(shù)據(jù)接口: 并聯(lián)
轉(zhuǎn)換器數(shù)目: 2
電壓電源: 模擬和數(shù)字
功率耗散(最大): 300mW
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 100-TQFP 裸露焊盤
供應(yīng)商設(shè)備封裝: 100-TQFP-EP(14x14)
包裝: 托盤
輸出數(shù)目和類型: 4 電流,單極;4 電流,雙極
采樣率(每秒): 1G
AD9776/AD9778/AD9779
Rev. A | Page 47 of 56
1. SET INTERPOLATION RATE
2. SET INTERPOLATION FILTER MODE
3. SET INPUT DATA FORMAT
4. SET DATACLK POLARITY TO MATCH INPUT TIMING
0
53
61
-09
9
Figure 102. SPI Port Software Window
The default settings for the evaluation board allow the user to
view the differential outputs through a transformer that
converts the DAC output signal to a single-ended signal. On the
evaluation board, these transformers are designated T1A, T2A,
T3A, and T4A. There are also four common-mode transformers
on the board that are designated T1B, T2B, T3B, and T4B. The
recommended operating setup places the transformer and
common-mode transformer in series. A pair of transformers
and common-mode transformers are installed on each DAC
output, so that the pairs can be set up in either order. As an
example, for the frequency range of dc to 30 MHz, it is
recommended that the transformer be placed right after the
DAC. Above DAC output frequencies of 30 MHz, it is
recommended that the common-mode transformer is placed
right after the DAC outputs, followed by the transformer.
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