Semtech GS2974A

The GS2974A is a high-speed BiCMOS integrated circuit designed to equalize and restore signals received over 75ohm co-axial cable.
The GS2974A is designed to support SMPTE 424M, SMPTE 292M and SMPTE 259M, and is optimized for performance at 1.485Gb/s and 2.97Gb/s.
The GS2974A features DC restoration to compensate for the DC content of SMPTE pathological test patterns.
A voltage programmable mute threshold (MCLADJ), applicable for HD and SD mode (refer to Section 5.2), is included to allow muting of the GS2974A output when an approximate selected cable length is reached for SMPTE 259M signals. This feature allows the GS2974A to distinguish between low amplitude SD-SDI signals and noise at the input of the device. The serial digital outputs of the GS2974A may be forced to a mute state by applying a voltage to the MUTE pin.
Power consumption is typically 215mW using a 3.3V power supply. The GS2974A is lead-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
- 从143Mb/s到2.97Gb/s的多标准运行
- 在270Mb/s时支持DVB-ASI
- 小占位封装(4mm*4mm)
- 无铅且符合RoHS标准
- 手动旁路(对具有缓慢升/降定时的低数据速率有用)
- 专为1.485Gb/s和2.97Gb/s进行了性能优化
- 标准均衡长度(Belden 1694A电缆):在2.97Gb/s时为120米、在1.485Gb/s时为200米和在270Mb/s时为350米
- 50Ω差分输出(内部50Ω拉升)
- 基于最大电缆长度调节的可编程静音
- 单个3.3V电源电压
- 工作温度范围:摄氏0度至+70度
Applications
- SMPTE 424M、SMPTE 292M和SMPTE 259M同轴电缆数字串行接口
Packaging
- GS2974ACTE3: 无铅、符合RoHS标准、卷带包装-250件卷
- GS2974ACNTE3Z:无铅、符合RoHS标准、卷带包装-2500件/卷
- GS2974ACNTE3:无铅、符合RoHS标准、卷带包装-2500件/卷
- GS2974ACNE3: 无铅、符合RoHS标准、托盘包装-490件/盘
Order Codes
- SMPTE 424M、SMPTE 292M和SMPTE 259M同轴电缆数字串行接口