参数资料
型号: MAX9220EUM+D
厂商: Maxim Integrated Products
文件页数: 2/17页
文件大小: 0K
描述: IC DESERIALIZER PROG 48TSSOP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 39
功能: 解串器
数据速率: 1.785Gbps
输入类型: LVDS
输出类型: LVTTL,LVCMOS
输入数: 3
输出数: 21
电源电压: 3 V ~ 3.6 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 48-TFSOP(0.240",6.10mm 宽)
供应商设备封装: 48-TSSOP
包装: 管件
MAX9210/MAX9214/MAX9220/MAX9222
Programmable DC-Balance
21-Bit Deserializers
10
______________________________________________________________________________________
the voltage rating of the capacitor. The typical LVDS dri-
ver output is 350mV centered on an offset voltage of
1.25V, making single-ended output voltages of 1.425V
and 1.075V. An LVDS receiver accepts signals from 0 to
2.4V, allowing approximately
±1V common-mode differ-
ence between the driver and receiver on a DC-coupled
link (2.4V - 1.425V = 0.975V and 1.075V - 0V = 1.075V).
Common-mode voltage differences may be due to
ground potential variation or common-mode noise. If
there is more than
±1V of difference, the receiver is not
guaranteed to read the input signal correctly and may
cause bit errors. AC-coupling filters low-frequency
ground shifts and common-mode noise and passes
high-frequency data. A common-mode voltage differ-
ence up to the voltage rating of the coupling capacitor
(minus half the differential swing) is tolerated. DC-bal-
anced coding of the data is required to maintain the dif-
ferential signal amplitude and limit jitter on an
AC-coupled link. A capacitor in series with each output
of the LVDS driver is sufficient for AC-coupling.
However, two capacitors—one at the serializer output
and one at the deserializer input—provide protection in
case either end of the cable is shorted to a high voltage.
Applications Information
Selection of AC-Coupling Capacitors
Voltage droop and the DSV of transmitted symbols
cause signal transitions to start from different voltage
levels. Because the transition time is finite, starting the
signal transition from different voltage levels causes
timing jitter. The time constant for an AC-coupled link
needs to be chosen to reduce droop and jitter to an
acceptable level.
The RC network for an AC-coupled link consists of the
LVDS receiver termination resistor (RT), the LVDS driver
output resistor (RO), and the series AC-coupling capac-
itors (C). The RC time constant for two equal-value
7 : 1
1 : 7
7
100
Ω
7 : 1
1 : 7
7
100
Ω
7 : 1
1 : 7
7
100
Ω
PLL
100
Ω
MAX9209
MAX9213
MAX9210
MAX9214
MAX9220
MAX9222
TxOUT
TxCLK OUT
RxIN
RxCLK IN
21:3 SERIALIZER
3:21 DESERIALIZER
PWRDWN
RxCLK OUT
RxOUT
PWRDWN
TxCLK IN
TxIN
TRANSMISSION LINE
Figure 11. DC-Coupled Link, Non-DC-Balanced Mode
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相关代理商/技术参数
参数描述
MAX9220EUM-T 功能描述:串行器/解串器 - Serdes DC-Balanced Deserializer RoHS:否 制造商:Texas Instruments 类型:Deserializer 数据速率:1.485 Gbit/s 输入类型:ECL/LVDS 输出类型:LVCMOS 输入端数量:1 输出端数量:20 工作电源电压:2.375 V to 2.625 V 工作温度范围:0 C to + 70 C 封装 / 箱体:TQFP-64
MAX9220EUM-TD 功能描述:串行器/解串器 - Serdes DC-Balanced Deserializer RoHS:否 制造商:Texas Instruments 类型:Deserializer 数据速率:1.485 Gbit/s 输入类型:ECL/LVDS 输出类型:LVCMOS 输入端数量:1 输出端数量:20 工作电源电压:2.375 V to 2.625 V 工作温度范围:0 C to + 70 C 封装 / 箱体:TQFP-64
MAX9222 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Programmable DC-Balance 21-Bit Deserializers
MAX9222ETM 制造商:Maxim Integrated Products 功能描述:- Rail/Tube
MAX9222EUM 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Programmable DC-Balance 21-Bit Deserializers