DATA SHEET
LMH0318 3 Gbps HD/SD SDI Reclocker with Integrated Cable Driver
1 Features
- Supports ST 424(3G), 292(HD), 259(SD), MADI, and DVB-ASI
- Locks to rates 2.97 Gbps, 1.485 Gbps, or Divided by 1.001 sub-rates, and DVB-ASI
- Reference-free Operation with Fast Lock Time covering all Supported or Selected Data Rates
- 75 Ω and 100 Ω Transmitter Outputs
- Integrated 2:1 Mux Input, 1:2 Demux/Fanout Outputs
- Automatic Slew Rate Based on Input Rate Detect
- On-chip Eye Monitor
- Low 300 mW Power Consumption With Automatic Power Down On Loss Of Input Signal
- Programmable via SPI, Or SMBus Interface
- Single 2.5 V Supply Operation
- Small 4 mm × 4 mm 24-pin QFN Package
- -40°C to +85°C Operating Temperature Range
- Footprint compatible with LMH1218 for easy upgrade to 12G
2 Applications
- SMPTE Compatible Serial Digital Interface (SDI)
- Broadcast Video Routers, Switches, and Monitors
- Digital Video Processing and Editing
- DVB-ASI and Distribution Amplifiers
3 Description
The LMH0318 is a 3 Gbps HD/SD SDI Reclocker with Integrated Cable Driver designed to drive serial video data compatible to SMPTE-SDI and DVB-ASI standards. The clock and data recovery circuit eliminates accumulated jitter and detects the incoming data rate without requiring an external reference clock. The integrated driver with 75 ohm and 50 ohm outputs enables multiple media options such as coax and FR4 PCB.
Device Information(1)
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| LMH0318 | WQFN (24) | 4 mm × 4 mm |
- For all available packages, see the orderable addendum at the end of the data sheet.
Simplified SPI Schematic
4 Revision History
| DATE | REVISION | NOTES |
|---|---|---|
| September 2015 | * | Initial release. |