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參數(shù)資料
| 型號： | SY58620LMG |
| 廠商： | Micrel Inc |
| 文件頁數(shù)： | 4/18頁 |
| 文件大?。?/td> | 0K |
| 描述： | TXRX 4.25GBPS CML OUT 24-MLF |
| 標(biāo)準(zhǔn)包裝： | 75 |
| 類型： | 收發(fā)器 |
| 驅(qū)動器/接收器數(shù)： | 1/1 |
| 電源電壓： | 3 V ~ 3.6 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-VFQFN 裸露焊盤，24-MLF? |
| 供應(yīng)商設(shè)備封裝： | 24-MLF?（4x4） |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁面： | 1089 (CN2011-ZH PDF) |
| 其它名稱： | 576-2054-5 SY58620LMG-ND |
Micrel, Inc.
SY58620L
January 2006
12
M9999-012006-C
hbwhelp@micrel.com or (408) 955-1690
LOS detection trip-point by setting up a voltage divider
between VCC and VREF (an internal voltage source set
at VCC-1.3V), since there is a 2.8k
internal resistor
connected between LOSLVL and VREF. The input
voltage range of LOSLVL ranges from VCC to VREF.
See the “Functional Block Diagram” section and
Figures 2a and 2b, to see how RLOSLVL sets up a
voltage divider between VCC and VREF. Refer to the
“LOS Output DC Electrical Characteristics” table and
“Typical Operating Characteristics” section to see how
different RLOSLVL values affect LOS sensitivity.
Figure 2a. Voltage Source Implementation
Figure 2b. Alternative Implementation
LOS Output
Connecting the input /RXEN to the LOS output as
shown in Figures 2a and 2b, maintains receiver
output stability under a Loss-of-Signal condition
Sensitivity of the LOS signal can be programmed
using the LOSLVL input by using a variable resistor
connected to VCC with a wiper connected to
LOSLVL, as shown in Figure 2b
≥ 2dB hysteresis is insured if R
LOSLVL
≤ 10k.
LOS is guaranteed chatter-free at f
≥ 622Mbps
(311MHz)
Hysteresis
The SY58620L provides a minimum of 2dB of LOS
hysteresis, see the Figure 3 for more details.
Figure 3. LOS Hysteresis Assert/De-assert
Hysteresis is defined as: 20Log10
dB.
age
assertVolt
SD_De
oltage
SD_AssertV
Loopback
To support diagnostic system testing, the SY58620L
features a loopback test mode, activated by setting
LOOPBACK to logic HIGH. Loopback mode enables
an internal loopback path from the transmitter input to
the receiver output and supports the full 4.25Gbps
data rate throughput.
Crosstalk
The SY58620 features a patent-pending isolation
between the receiver and transmitter channels. The
following guide lines can be used to minimize on
layout induced crosstalk:
1.
Ground Stripping
Ground stripping is an effective method to reduce
crosstalk. Ground stripping involves running a
ground trace between the receiver and transmitter
channels.
2.
Vertical and Horizontal Traces
Another way to reduce crosstalk is to route the
receiver and transmitter channels on separate
layers with an embedded ground or power supply
layer between the layers. When routing the traces
on
different
layers,
run
the
receiver
traces
horizontal to the transmitter traces and route the
transmitter traces vertical to the receiver traces.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SY58620LMG TR | 功能描述:總線收發(fā)器 4.25Gbps Transceiver w/ CML Outputs (I Temp, Green) RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel |
| SY58620LMGTR | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Precision 4.25Gbps CML Backplane Transceiver with Integrated Loopback |
| SY58621L | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Precision 3.2Gbps CML/LVPECL Backplane Transceiver with Integrated Loopback |
| SY58621L_10 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Precision 3.2Gbps CML/LVPECL Backplane |
| SY58621LMG | 功能描述:總線收發(fā)器 4.25Gbps Transceiver w/ CML/LVPECL Outputs (I Temp, Green) RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel |
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