參數(shù)資料
型號: MAX5894EGK+TD
廠商: Maxim Integrated Products
文件頁數(shù): 11/32頁
文件大?。?/td> 0K
描述: IC DAC 14BIT DUAL 500MSPS 68-QFN
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準包裝: 2,500
設(shè)置時間: 11ns
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): 886mW
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(yīng)商設(shè)備封裝: 68-QFN 裸露焊盤(10x10)
包裝: 帶卷 (TR)
輸出數(shù)目和類型: 2 電流,單極
采樣率(每秒): 500M
MAX5894
14-Bit, 500Msps, Interpolating and Modulating
Dual DAC with CMOS Inputs
______________________________________________________________________________________
19
Interpolating Filter
The MAX5894 features three cascaded FIR half-band
filters. The interpolating filters are enabled or disabled
in combinations to support 1x (no interpolation), 2x, 4x,
or 8x interpolation. Bits 7 and 6 of register 01h set the
interpolation rate (see Table 2). The last interpolation fil-
ter is located after the modulator. In the 8x interpolation
mode, the last filter (FIR3) can be configured as low-
pass or highpass (bit 5, address 01h) to select the
lower or upper sideband from the modulation output.
The frequency responses of these three filters are plot-
ted in Figures 5–8.
Figure 5. Interpolation Filter Frequency Response, 2x
Interpolation Mode
0
0.1
0.2
0.3
0.4
-0.0004
-0.0002
0
PASSBAND DETAIL
0
0.4 0.6 0.8
fOUT - NORMALIZED TO INPUT DATA RATE
1.0 1.2 1.4 1.6 1.8 2.0
-20
-40
-60
-80
-100
GAIN
(dBFS)
-120
0.2
0
0.1
0.2
0.3
0.4
-0.0004
-0.0002
0
PASSBAND DETAIL
Figure 6. Interpolation Filter Frequency Response, 4x
Interpolation Mode
0
1.0 1.5
2.0
fOUT - NORMALIZED TO INPUT DATA RATE
2.5
3.0
3.5
4.0
-20
-40
-60
-80
-100
GAIN
(dBFS)
-120
0.5
0
0.1
0.2
0.3
0.4
-0.0004
-0.0002
0
PASSBAND DETAIL
Figure 7. Interpolation Filter Frequency Response, 8x
Interpolation Mode (FIR3 Lowpass Mode)
0
02
3
4
fOUT - NORMALIZED TO INPUT DATA RATE
56
7
8
-20
-40
-60
-80
-100
GAIN
(dBFS)
-120
1
0
0.1
0.2
0.3
0.4
-0.0004
-0.0002
0
PASSBAND DETAIL
Figure 8. Interpolation Filter Frequency Response, 8x
Interpolation Mode (FIR3 Highpass Mode)
0
02
3
4
fOUT - NORMALIZED TO INPUT DATA RATE
56
7
8
-20
-40
-60
-80
-100
GAIN
(dBFS)
-120
1
3.6
3.8
4.0
4.2
4.4
-0.0004
-0.0002
0
PASSBAND DETAIL
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