Semtech GS2964

The GS2964 is a cost optimized short reach equalizer that still supports 100m at 3Gbps. The GS2964 is a high-speed BiCMOS integrated circuit designed to equalize and restore signals received over 75ohm coaxial cable.
The device is designed to support SMPTE 424M, SMPTE292M and SMPTE 259M, and is optimized for performance at 270Mbps, 1.485Gbps and 2.97Gbps.
The GS2964 features DC restoration to compensate for the DC content of SMPTE pathological test patterns.
The Carrier Detect output pin (CD) indicates whether a valid input signal has been detected. It can be connected directly to the MUTE pin to mute the output on loss of carrier. A voltage programmable threshold, which can be changed via the SQ_ADJ pin, forces CD high when the input signal amplitude falls below the threshold. This allows the GS2964 to distinguish between low-amplitude SDI signals and noise at the input of the device.
The equalizing and DC restore stages are disengaged when the BYPASS pin is HIGH. No equalization occurs in Bypass mode.
The differential outputs can be DC-coupled to Gennum® 3.3V cable drivers and reclockers and to other industry-standard 3.3V CML logic.
The GS2964 is footprint and drop-in compatible with existing GS2974 designs, with no additional application changes required.
The device is available in a 16-pin, 4mm x 4mm QFN package.
Power consumption of the GS2964 is typically 215mW.
The GS2964 is Pb-free, and the encapsulation compound does not contain halogenated flame retardant.
This component and all homogeneous subcomponents are RoHS compliant.
Overview
Features
- 符合SMPTE 424M、SMPTE 292M和SMPTE 259M标准
- 自动电缆均衡
- 在3Gbps时电缆长度为100米、HD时为140米、SD时为180米
- 从143Mbps到2.97Gbps多标准运行
- 专为270Mbps、1.485Gbps和2.97Gbps进行了性能优化。标准均衡长度(Belden 1694A电缆):
- 在2.97Gbps时为100米
- 在1.485Gbps时为140米
- 在270Mbps时为180米
- 在270Mbps时支持DVB-ASI
- 手动旁路(对缓慢上升/下降时间的低数据速率有用)
- 具有静噪阈值调节的可编程载波检测
- 标准EIA/JEDEC逻辑控制和状态信号电平
- 单个3.3V电源电压运行
- 215mW功耗(典型)
- 宽工作温度范围:摄氏-40度至+85度
- 小占位QFN封装(4mm*4mm)
- 与GS2974完全兼容
- 无铅且符合RoHS标准
Applications
- 音频解嵌器
- 音频加嵌器
- 摄像机
- 摄像机控制单元
- 分配放大器
- 编码器/解码器
- 格式检测器
- 主控切换器
- 监控器
- 多屏观察器
- 制作切换器
- Routers路由器
- SMPTE 424M、SMPTE 292M和SMPTE 259M同轴电缆数字串行接口
- GS2964-INTE3Z:无铅、符合RoHS标准、卷带包装-2500件/卷
- GS2964-INTE3:无铅、符合RoHS标准、卷带包装-250件/卷
- GS2964-INE3:无铅、符合RoHS标准、托盘包装-490件/盘
- 音频解嵌器
- 音频加嵌器
- 摄像机
- 摄像机控制单元
- 分配放大器
- 编码器/解码器
- 格式检测器
- 主控切换器
- 监控器
- 多屏观察器
- 制作切换器
- Routers路由器
- SMPTE 424M、SMPTE 292M和SMPTE 259M同轴电缆数字串行接口