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[原创] TI DSLVDS1047 LVDS四路高速差分线路驱动解决方案

关键词:LVDS 测试测量 打印机 板到板通信 DSLVDS1047

时间:2019-05-24 11:29:26       来源:中电网

TI公司的DSlvds1047是3.3V LVDS四路高速差分线路驱动器,设计用于需要超低功耗和高数据速率的应用.采用低压差分信号(LVDS)技术,数据速率超过400Mbps(200MHz).DSLVDS1047采用低压TTL/CMOS输入电平,并转换成低压(350mV)差分输出信号,支持TRI-STATE功能,可以禁用输出级,禁用负载电流,因此使超低空闲电源功耗降低到典型的13mW(3.3V静态).工作电压3.3V,典型的差分抖动300ps,最大的差分抖动400ps,最大传输时延为1.7ns,±350-mV差分信令,满足或超过TIA/EIA-644 LVD标准,工业工作温度−40℃ 到+85°,主要用在多功能打印机,板对板通信,测试和测量,打印机,数据中心互连,实验室仪器和超声扫描仪.本文介绍了DSLVDS1047主要特性,功能框图,点到点应用框图以及评估板DSLVDS1047-1048EVM主要特性,建立配置图,电路图,材料清单和PCB设计图.

The DSLVDS1047 device is a quad CMOS flowthroughdifferential line driver designed for applications requiring ultra-low power dissipation andhigh data rates. The device is designed to supportdata rates in excess of 400 Mbps (200 MHz) usingLow Voltage Differential Signaling (LVDS)technology.

The DSLVDS1047 accepts low voltage TTL/CMOSinput levels and translates them to low voltage(350 mV) differential output signals. In addition, thedriver supports a TRI-STATE function that may beused to disable the output stage, disabling the loadcurrent, and thus dropping the device to an ultra lowidle power state of 13 mW typical. The DSLVDS1047 has a flow-through pinout for easy PCB layout.

The EN and EN* inputs are ANDed together andcontrol the TRI-STATE outputs. The enables arecommon to all four drivers. The and companion linereceiver (DSLVDS1048) provide a new alternative tohigh power psuedo-ECL devices for high speed pointto-point interface applications.

DSLVDS1047主要特性:

• Designed for Signaling Rates up to 400-Mbps
• 3.3-V Power Supply Design
• 300-ps Typical Differential Skew
• 400-ps Maximum Differential Skew
• 1.7-ns Maximum Propagation Delay
• ±350-mV Differential Signaling
• Low Power Dissipation (13 mW at 3.3-V Static)
• Interoperable With Existing 5-V LVDS Receivers
• High impedance on LVDS Outputs on PowerDown
• Flow-Through Pinout Simplifies PCB Layout
• Meets or Exceeds TIA/EIA-644 LVDS Standard
• Industrial Operating Temperature Range(−40℃ to +85℃)
• Available in TSSOP Package

DSLVDS1047应用:

• Multifunction Printers
• Board-to-Board Communication
• Test and Measurement
• Printers
• Data Center Interconnect
• Lab Instrumentation
• Ultrasound Scanners

图1.DSLVDS1047功能框图

图2.DSLVDS1047点到点应用框图

评估板DSLVDS1047-1048EVM

The DSLVDS1047-1048EVM is an evaluation module designed for performance and functional evaluationof the Texas Instruments DSLVDS1047 3-V LVDS Quad CMOS Differential Line Driver and DSLVDS1048waveformcharacteristics and signal integrity supported by the DSLVDS1047 and DSLVDS1048. Header pins allowaccess to the DSLVDS1047 and DSLVDS1048 inputs and outputs and also facilitate connection to lab equipment or user systems for performance evaluation.

评估板DSLVDS1047-1048EVM主要特性:

DSLVDS1047:

• Converts Single-Ended LVCMOS to Differential LVDS
• >400 Mbps (200 MHz) Switching Rates
• Single Supply Operation: VDD = 3.3 V ± 5%
• Low Power (13 mW at 3.3 V Static)
• Interoperable With Existing 5-V LVDS Receivers
• Flow-Through Pinout Simplifies PCB Layout

DSLVDS1048:

• Converts Differential LVDS to Single-Ended LVCMOS
• >400 Mbps (200 MHz) Switching Rates
• Single Supply Operation: VDD = 3.3 V ± 5%
• Accepts Small ±35 mV Differential Signaling
• Supports Input Failsafe – Open, Short, and Terminated
• Low Power Design (40 mW at 3.3 V Static)
• Flow-Through Pinout Simplifies PCB Layout

图3.评估板DSLVDS1047-1048EVM外形图

评估板DSLVDS1047-1048EVM应用:

• Multifunction Printers
• Board-to-Board Communication
• Test and Measurement
• Printers
• Data Center Interconnect
• Lab Instrumentation
• Ultrasound Scanners

图4.评估板DSLVDS1047-1048EVM建立配置图

图5.评估板DSLVDS1047-1048EVM电路图
评估板DSLVDS1047-1048EVM材料清单:



图6.评估板DSLVDS1047-1048EVM PCB设计图:左:顶曾;右:底层
详情请见:
http://www.ti.com/lit/ds/symlink/dslvds1047.pdf
http://www.ti.com/lit/ug/snlu240/snlu240.pdf
dslvds1047.pdf
snlu240.pdf

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