Semtech GS1679
Not recommended for new designs.
Please use the GS2989 for new designs.
The GS1679 is a high-speed BiCMOS integrated circuit designed to drive one to four 75Ω coaxial cables. The GS1679 can drive data rates up to 1.485Gbps, and provides two selectable slew rates in order to achieve compliance to SMPTE 292M, SMPTE 259M and SMPTE 344M.
The GS1679 accepts industry-standard differential input levels, including LVPECL and CML. The DISABLE1 and DISABLE2 pins power-down the first and second output drivers respectively, leaving the serial data output in a high-impedance state. The GS1679 features an adjustable output swing using an external bias resistor. The single-ended output swing is adjustable from 600mVpp to 1200mVpp. The GS1679 can be powered from either a 3.3V or a 2.5V supply. Power consumption is typically 110mW using a 2.5V power supply.
The GS1679 is forward footprint-compatible with the Gennum® 3G GS2989, allowing for an easier migration of HD designs to 3G.
Overview
Features
- SMPTE 292M, SMPTE 259M and SMPTE 344M compliant
- Supports data rates from 270Mbps to 1.485Gbps
- Supports DVB-ASI at 270Mbps
- Dual differential coaxial-cable-driving outputs
- selectable slew rates
- adjustable output swing from 600mVpp to 1200mVpp
- DISABLE control
Wide common-mode range input buffer
- 100mV sensitivity
- Supports DC-coupling to industry-standard differential logic
- on-chip 100Ω differential data input termination
- Excellent output eye quality
- Power supply operation at 3.3V or 2.5V
- 110mW power consumption (2.5V supply)
- Operating temperature range: -40°C to +85°C
- Small footprint QFN package (4mm x 4mm)
- Pb-free and RoHS compliant
- Forward pin-compatible with Gennum's 3G GS2989
Applications
- Audio De-embedders
- Audio Embedders
- Camera
- Camera Control Unit
- Distribution Amplifiers
- Encoders/Decoders
- Format Detectors
- Master Control Switchers
- Monitors, Multiviewers
- Production Switchers
- Routers
- SMPTE 292M and SMPTE 259M coaxial cable serial digital interfaces
- Test and Measurement Equipment
- Up/Down/Cross Converters
- Video Capture Cards
- Video Servers
- Video Tape Recorders
Order Codes
- GS1679-INE3: Lead-Free, RoHS Compliant, Tray-490 Pieces