TI SN75LVCP412A：双通道SATA 3Gbps Redriver详解
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收藏 2.83MB PDF 举报 TI-SN75LVCP412A是一款专为SATA转接设计的高性能驱动器，由Texas Instruments (TI)公司提供。该文档主要介绍了SN75LVCP412A这款双通道单线路SATA 3-Gbps信号重构器和驱动器，它旨在满足SATA 2.6版规范，支持数据传输速率高达3.0 Gbps。
SN75LVCP412A的主要特性包括：
1. 高度的ESD（静电放电）保护：设备具备出色的抗ESD能力，能够抵抗高达12000V的HBM（人体模型）和1500V的CDM（共模浪涌电压），确保在敏感环境中稳定运行。
2. SATA热插拔兼容：设计允许在系统运行时安全地插入或移除SATA连接器，降低了维护时的风险。
3. 共模偏置支持：有助于改善信号完整性，特别适用于出框（OOB）通信，符合IEC 61000-4-2标准，确保快速启动时的信号质量。
4. 输出预加重功能：通过±8kV接触放电和±15kV空气放电，增强信号抗干扰能力。
5. 集成终端匹配：减少外部元件需求，简化电路设计，提高效率。
6. 封装形式：采用20引脚QFN封装，节省空间，适合紧凑型设计。
7. 节能性能：在活动模式下典型功耗低于200mW，在自动低功耗模式下进一步降低至20mW，而在待机状态下功耗仅为2.1mW，非常节能。
8. 与MAX4951兼容：由于其引脚设计，SN75LVCP412A可以方便地替换MAX4951，提供了良好的兼容性。
9. 优秀的抖动和损耗补偿能力：能够在超过20英寸FR4（常见的多层印刷电路板材料）的长迹线上实现出色的信号恢复。
应用范围广泛，适用于笔记本电脑、台式机、移动工作站、服务器和Docking Station等设备，尤其适合对信号质量和稳定性有高要求的场景。由于其出色的性能和低功耗特性，SN75LVCP412A是现代数据存储和传输系统中的关键组件。
SN75LVCP412A
SLLS991 –DECEMBER 2009
www.ti.com
of its channels independently. When the input signal of either or both channels is in the electrical idle
state, i.e. V
IDp-p
<50 mV and stays in this state for > 10 μs, the associated channel(s) enters the low power
state. In this state, the output of the associated channel(s) is held to TX VCM and the device selectively
shuts off some circuitry to lower power by > 90% (typ) of its normal operating power. Exit time from auto
low power mode is less than 50 ns max.
OUT-OF-BAND (OOB) SUPPORT
The squelch detector circuit within the device enables full detection of OOB signaling as specified in SATA
specification 2.6. Differential signal amplitude at the receiver input of 50 mV
p-p
or less is not detected as an
activity and hence is not passed to the output. Differential signal amplitude of 150 mV
p-p
or more is detected as
an activity and therefore passed to the output indicating activity. Squelch circuit on/off time is 8 ns max. While in
squelch mode outputs are held to VCM
TX
.
DEVICE POWER
The SN75LVCL412A is designed to operate from a single 3.3-V supply. Always practice proper power supply
sequencing procedures. Apply V
CC
first before any input signals are applied to the device. The power-down
sequence is in reverse order.
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range (unless otherwise noted)
(1)
VALUE UNIT
Supply voltage range
(2)
V
CC
–0.5 to 4 V
Voltage range Differential I/O –0.5 to 4 V
Control I/O –0.5 to V
CC
+ 0.5
Electrostatic discharge Human body model
(3)
±12000 V
Charged-device model
(4)
±1500
Machine model
(5)
±200
Continuous power dissipation See Dissipation Rating Table
(1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings
only and functional operation of the device at these or any conditions beyond those indicated under recommended operating conditions
is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) All voltage values, except differential voltages, are with respect to network ground terminal.
(3) Tested in accordance with JEDEC Standard 22, Test Method A114-B.
(4) Tested in accordance with JEDEC Standard 22, Test Method C101-A.
(5) Tested in accordance with JEDEC Standard 22, Test Method A115-A.
DISSIPATION RATINGS
PCB JEDEC DERATING FACTOR
(1)
T
A
= 85°C
PACKAGE T
A
≤ 25°C
STANDARD ABOVE T
A
= 25°C POWER RATING
20-pin QFN (RTJ) Low-K 1176 mW 11.76 mW/°C 470 mW
High-K 2631 mW 26.3 mW/°C 1052 mW
(1) This is the inverse of the junction-to-ambient thermal resistance when board-mounted and with no air flow.
THERMAL CHARACTERISTICS
over operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX
(1)
UNIT
R
θJB
Junction-to-board thermal resistance 10 °C/W
R
θJC
Junction-to-case thermal resistance 60 °C/W
R
θJP
Junction-to-pad thermal resistance 15.2 °C/W
(1) The maximum rating is simulated under 3.6-V V
CC
.
6 Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated
Product Folder Link(s): SN75LVCP412A
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