參數(shù)資料
型號: DAC5674IPHP
廠商: Texas Instruments
文件頁數(shù): 21/39頁
文件大?。?/td> 0K
描述: IC DAC 14BIT 400MSPS 48-HTQFP
產(chǎn)品培訓模塊: Data Converter Basics
標準包裝: 250
系列: CommsDAC™
設置時間: 20ns
位數(shù): 14
數(shù)據(jù)接口: 并聯(lián)
轉(zhuǎn)換器數(shù)目: 1
電壓電源: 模擬和數(shù)字
功率耗散(最大): 550mW
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 48-TQFP 裸露焊盤
供應商設備封裝: 48-HTQFP(7x7)
包裝: 托盤
輸出數(shù)目和類型: 2 電流,單極
采樣率(每秒): 400M
產(chǎn)品目錄頁面: 898 (CN2011-ZH PDF)
配用: 296-30860-ND - EVAL MODULE FOR DAC5674
其它名稱: 296-15726
296-15726-1
296-15726-1-ND
296-15726-5
296-15726-5-ND
DAC5674
SLWS148A SEPTEMBER 2003 REVISED OCTOBER 2005
www.ti.com
28
AVDD
Current Source Array
IOUT1
IOUT2
S(1)
S(1)C
RLOAD
S(2)
S(2)C
S(N)
S(N)C
Figure 34. Equivalent Analog Current Output
The DAC5674 can be easily configured to drive a doubly terminated 50-
cable using a properly selected RF
transformer. Figure 35 and Figure 36 show the 50-
doubly terminated transformer configuration with 1:1 and
4:1 impedance ratio, respectively. Note that the center tap of the primary input of the transformer has to be
grounded to enable a dc current flow. Applying a 20-mA full-scale output current would lead to a 0.5 VPP for
a 1:1 transformer and a 1 VPP output for a 4:1 transformer.
Figure 37 shows the single-ended output configuration, where the output current IOUT1 flows into an equivalent
load resistance of 25
. Node IOUT2 should be connected to AGND or terminated with a resistor of 25 to
AGND. The nominal resistor load of 25
gives a differential output swing of 1 VPP when applying a 20-mA
full-scale output current.
IOUT1
1:1
IOUT2
50
50
RLOAD
50
100
AGND
Figure 35. Driving a Doubly Terminated 50-
Cable Using a 1:1 Impedance Ratio Transformer
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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
DAC5674IPHP-ND 制造商: 功能描述: 制造商:undefined 功能描述:
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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
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