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參數(shù)資料
| 型號： | AD9767ASTZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 25/44頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DAC 14BIT DUAL 125MSPS 48LQFP |
| 產(chǎn)品培訓(xùn)模塊： | DAC Architectures |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | TxDAC+® |
| 設(shè)置時(shí)間： | 35ns |
| 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）： | 450mW |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 48-LQFP |
| 供應(yīng)商設(shè)備封裝： | 48-LQFP（7x7） |
| 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）： | 125M |
| 產(chǎn)品目錄頁面： | 785 (CN2011-ZH PDF) |
| 配用： | AD9767-EBZ-ND - BOARD EVAL FOR AD9767 |
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Data Sheet
AD9763/AD9765/AD9767
Rev. G | Page 31 of 44
APPLICATIONS INFORMATION
VDSL EXAMPLE APPLICATIONS USING THE
AD9765 AND AD9767
Very high frequency digital subscriber line (VDSL) technology is
growing rapidly in applications requiring data transfer over
relatively short distances. By using quadrature amplitude
modulation (QAM) and transmitting the data in discrete multiple
tones (DMT), high data rates can be achieved.
As with other multitone applications, each VDSL tone is
capable of transmitting a given number of bits, depending on
the signal-to-noise ratio (SNR) in a narrow band around that
tone. For a typical VDSL application, the tones are evenly
spaced over the range of several kHz to 10 MHz. At the high
frequency end of this range, performance is generally limited by
cable characteristics and environmental factors such as external
interferers. Performance at the lower frequencies is much more
dependent on the performance of the components in the signal
chain. In addition to in-band noise, intermodulation from other
tones can also potentially interfere with the data recovery for
represent a 500-tone missing bin test vector, with frequencies
evenly spaced from 400 Hz to 10 MHz. This test is very
commonly done to determine if distortion limits the number of
bits that can be transmitted in a tone. The test vector has a
series of missing tones around 750 kHz, which is represented in
Figure 79, and a series of missing tones around 5 MHz, which is
represented in Figure 81. In both cases, the spurious-free
dynamic range (SFDR) between the transmitted tones and the
empty bins is greater than 60 dB.
–20
–120
–110
–100
–90
–80
–70
–60
–50
–40
–30
0.665
0.825
0.805
0.785
0.765
0.745
0.725
0.705
0.685
(d
B
m
)
FREQUENCY (MHz)
00
61
7-
07
9
Figure 79. AD9765 Notch in Missing Bin at 750 kHz Is Down >60 dB
(Peak Amplitude = 0 dBm)
–20
–120
–110
–100
–90
–80
–70
–60
–50
–40
–30
0.665
0.825
0.805
0.785
0.765
0.745
0.725
0.705
0.685
(d
B
m
)
FREQUENCY (MHz)
00
61
7-
08
0
Figure 80. AD9767 Notch in Missing Bin at 750 kHz Is Down >60 dB
(Peak Amplitude = 0 dBm)
–30
–120
–110
–100
–90
–80
–70
–60
–50
–40
4.85
4.90
4.95
5.00
5.05
5.10
5.15
(d
B
m
)
FREQUENCY (MHz)
00
61
7-
08
1
Figure 81. AD9765 Notch in Missing Bin at 5 MHz Is Down >60 dB
(Peak Amplitude = 0 dBm)
–20
–120
–100
–80
–60
–40
4.85
4.90
4.95
5.00
5.05
5.10
5.15
(d
B
m
)
FREQUENCY (MHz)
00
61
7-
08
2
Figure 82. AD9767 Notch in Missing Bin at 5 MHz Is Down >60 dB
(Peak Amplitude = 0 dBm)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD9767ASTZ | 制造商:Analog Devices 功能描述:D/A CONVERTER (D-A) IC ((NW)) |
| AD9767ASTZAIRBUS | 制造商:Analog Devices 功能描述: |
| AD9767ASTZKL1 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述: |
| AD9767ASTZRL | 功能描述:IC DAC 14BIT DUAL 125MSPS 48LQFP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:TxDAC+® 產(chǎn)品培訓(xùn)模塊:Data Converter Fundamentals DAC Architectures 標(biāo)準(zhǔn)包裝:750 系列:- 設(shè)置時(shí)間:7µs 位數(shù):16 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 電壓電源:雙 ± 功率耗散（最大）:100mW 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-LCC（J 形引線） 供應(yīng)商設(shè)備封裝:28-PLCC（11.51x11.51） 包裝:帶卷 (TR) 輸出數(shù)目和類型:1 電壓，單極；1 電壓，雙極 采樣率（每秒）:143k |
| AD9767-EB | 制造商:Analog Devices 功能描述: |
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