GS2985 Reclocker
Multi-Rate SDI Reclocker with Equalization & De-emphasis
Designed to automatically recover the embedded clock from a digital video signal and retime the incoming video data
GS2985
Overview
The GS2985 is a multi-rate serial digital reclocker designed to automatically recover the embedded clock from a digital video signal and retime the incoming video data.
A serial host interface provides the ability to configure and monitor multiple GS2985 devices in a daisy-chain configuration.
Adjustable input trace equalization (EQ) for up to 40" of FR4 trace losses, and adjustable output de-emphasis (DE) for up to 20" of FR4 trace losses, can be configured via the host interface.
The GS2985 can operate in either auto or manual rate selection mode. In Auto mode, the device will automatically detect and lock onto incoming SMPTE SDI data signals at any supported rate. For single rate data systems, the GS2985 can be configured to operate in Manual mode. In both modes, the device requires only one external crystal to set the VCO frequency when not locked and provides adjustment free operation.
The GS2985 accepts industry-standard differential input levels including LVPECL and CML. The differential data and clock outputs feature selectable output swing via the host interface, ensuring compatibility with most industry-standard, terminated differential receivers.
The GS2985 features dual differential outputs. The second output can be configured to emit either the recovered clock signal or the re-timed video data. This output can also be disabled to save power.
In systems which require passing of non-SMPTE data rates, the GS2985 can be configured to either automatically or manually enter a bypass mode in order to pass the signal without reclocking.
The GS2985 is Pb-free, and the encapsulation compound does not contain halogenated flame retardant. This component and all homogeneous sub-components are RoHS compliant.
Features/Highlights
- SMPTE 424M, SMPTE 292M and SMPTE 259M-C compliant
- Single supply operation at 3.3V or 2.5V
- 180mW typical power consumption (213mW with RCO enabled) at 2.5V
- Support DC coupling to industry-standard differential logic
- On-chip 100Ω differential data input/output termination
- Selectable 400mVppd or 800mVppd output swing on each output
- Seamless interface to other Gennum products
Key Applications
- Distribution Amplifiers
- Master Control Switchers
- Production Switchers
- Routers
- SMPTE 424M, SMPTE 292M and SMPTE 259M-C coaxial cable serial digital interfaces
- Test and Measurement Equipment
Ordering Information
Part No | Package |
GS2985-INE3 | Tray (260pcs) |
GS2985-INTE3 | Tape & Reel (250pcs) |
GS2985-INTE3Z | Tape & Reel (2500pcs) |
| Document | Type | Size | ||
|---|---|---|---|---|
![]() | Transitioning from Gennum's GS2975A to GS2985 | Application Note | 392 kB | |
| Broadcast Video Product Guide | Brochure | 1.4 MB | ||
| Reclockers Guide | Brochure | 221 kB | ||
![]() | GS2985-INE3 Certificate of Compliance | Certificate | 154 kB | |
![]() | GS2985 Datasheet | Datasheet | 1.8 MB | |
![]() | GS2985 Design Guide | Design Guide | 841 kB | |
![]() | GS2985 IBIS Model | IBIS Models | 3 MB | |
![]() | EB-GS2985-S | PCB Drawing | 198 kB | |
![]() | EB-GS2985-Q | PCB Drawing | 78 kB | |
| GS2985 Product Brief | Product Brief | 238 kB | ||
![]() | Material Declaration for GS2985-INE3 | RoHS Document | 94 kB | |
![]() | EB-GS2985-Q User Guide | User Guide | 2.2 MB | |
![]() | EB-GS2985 | User Guide | 2.4 MB |
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