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參數(shù)資料
| 型號(hào)： | MAX3802 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 3.2Gbps Quad Adaptive Cable Equalizer with Cable Driver |
| 中文描述： | 3.2Gbps四路、自適應(yīng)電纜均衡器，帶有電纜驅(qū)動(dòng)器 |
| 文件頁數(shù)： | 9/12頁 |
| 文件大?。?/td> | 830K |
| 代理商： | MAX3802 |
dynamically adjusts the equalizer to maintain the cor-
rect power ratio.
CML Input and Output Buffers
The input and output buffers are implemented using
CML. Equivalent circuits are shown in Figures 2 and 3.
For details on interfacing with CML, refer to Maxim
Application Note HFAN-01.0,
Interfacing Between CML,
PECL, and LVDS.
Flat-Response and Skin-Effect
Compensation Amplifiers
The buffered input waveform is fed equally to two
amplifiers
—
the flat-response amplifier and the skin-
effect compensation amplifier. The flat-response ampli-
fier has a constant gain over the entire frequency range
of the device, and the skin-effect compensation amplifi-
er has a gain characteristic that approximates the
inverse of the skin-effect attenuation in copper cable.
The skin-effect attenuation, in dB per unit length, is pro-
portional to the square root of the frequency. The out-
put currents from the amplifiers are supplied to the
current-steering network.
Current-Steering Network
The function of the current-steering network is to com-
bine adjustable quantities of the output currents from
the flat-response and skin-effect compensation ampli-
fiers in order to achieve a desired current ratio. The
ratio adjustment is controlled by the dual power-detec-
tor feedback loop.
The current-steering network is implemented with a pair
of variable attenuators that feed into a current-summing
node. The variable attenuators are used to attenuate
the output currents of the flat-response and skin-effect
compensation amplifiers under control of the dual
power-detector feedback loop. The outputs of the two
attenuators are combined at the summing node and
then fed to the output-limiting amplifier and the feed-
back loop.
Dual Power-Detector Feedback Loop
The outputs of the current-steering network are applied
to the inputs of 200MHz and 600MHz power detectors.
The outputs of the power detectors are applied to the
loop-filter amplifier. This amplifier controls the variable
attenuators in the current-steering network.
Output Limiting Amplifier
The output limiting amplifier amplifies the signal from
the current-steering network to achieve the specified
output voltage swing.
Applications Information
Refer to Maxim Application Note HFDN-10.0,
Equalizing Gigabit Copper Cable Links with the
MAX3800
(available at www.maxim-ic.com) for addi-
tional application information.
Selecting R
MOD
The cable driver output amplitude can be adjusted by
connecting a resistor (R
MOD
) with a value from 10k
to
20k
between the RMOD_ pin and ground. The exact
output amplitude of the driver is dependent on several
M
3.2Gbps Quad Adaptive Cable Equalizer
with Cable Driver
_______________________________________________________________________________________
9
_IN_-
_IN_+
ESD
STRUCTURES
V
CC
50
50
MAX3802
Figure 2. CML Input Structure
ESD
STRUCTURES
62.5
62.5
_OUT_-
_OUT_+
V
CC
MAX3802
Figure 3. CML Output Structure
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX3802UGK | 3.2Gbps Quad Adaptive Cable Equalizer with Cable Driver |
| MAX3803 | DC-Coupled, UCSP 3.125Gbps Equalizer |
| MAX3803UBP-T | DC-Coupled, UCSP 3.125Gbps Equalizer |
| MAX3804 | 12.5Gbps Settable Receive Equalizer |
| MAX3804ETE | 12.5Gbps Settable Receive Equalizer |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX3802EVKIT | 制造商:Maxim Integrated Products 功能描述:3.2GBPS QUAD ADAPTIVE CABLE EQUALIZER WITH CA - Bulk |
| MAX3802UTK+D | 功能描述:IC EQUALIZE CABLE 3.2GBPS 68TQFN RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動(dòng)器，接收器，收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:驅(qū)動(dòng)器 驅(qū)動(dòng)器/接收器數(shù):4/0 規(guī)程:RS422 電源電壓:4.5 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC N 包裝:帶卷 (TR) |
| MAX3802UTK+TD | 功能描述:IC EQUALIZE CABLE 3.2GBPS 68TQFN RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動(dòng)器，接收器，收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:1,240 系列:GD 類型:收發(fā)器 驅(qū)動(dòng)器/接收器數(shù):3/5 規(guī)程:RS232 電源電壓:4.5 V ~ 5.5 V 安裝類型:通孔 封裝/外殼:20-DIP（0.300"，7.62mm） 供應(yīng)商設(shè)備封裝:20-PDIP 包裝:管件 |
| MAX3803EVKIT | 功能描述:通信集成電路 - 若干 Evaluation Kit for the MAX3803 RoHS:否 制造商:Maxim Integrated 類型:Transport Devices 封裝 / 箱體:TECSBGA-256 數(shù)據(jù)速率:100 Mbps 電源電壓-最大:1.89 V, 3.465 V 電源電壓-最小:1.71 V, 3.135 V 電源電流:50 mA, 225 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Tube |
| MAX3803UBP | 制造商:Maxim Integrated Products 功能描述:DC-COUPLED UCSP 3.125GBPS EQUALIZE - Rail/Tube |
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