GS1578A_09 Datasheet, PDF (1/16 Pages) Gennum Corporation – HD-LINX II Multi-Rate Dual Slew-Rate Cable Driver

GS1578A HD-LINX® II Multi-Rate Dual Slew-Rate Cable Driver
Features
• SMPTE 292M, SMPTE 344M and SMPTE 259M
compliant
• Dual coaxial cable driving outputs with selectable
slew rate
• 50Ωdifferential PECL input
• Pb-free and RoHS compliant
• Seamless interface to other HD-LINX® II family
products
• Single 3.3V power supply operation
• Operating temperature range: 0°C to 70°C
Applications
• SMPTE 292M, SMPTE 344M and SMPTE 259M Coaxial
Cable Serial Digital Interfaces
Description
The GS1578A is a second generation high speed BiCMOS
integrated circuit designed to drive one or two 75Ωco-axial
cables.
The GS1578A may drive data rates up to 1.485Gb/s and
provides two selectable slew rates in order to achieve
compliance to SMPTE 259M, SMPTE 344M and SMPTE
292M.
The GS1578A accepts a LVPECL level differential input that
may be AC coupled. External biasing resistors at the inputs
are not required.
Power consumption is typically 168mW using a 3.3V
power supply. The GS1578A is Pb-free, and the
encapsulation compound does not contain halogenated
flame retardant.
This component and all homogeneous subcomponents are
RoHS compliant.
BANDGAP REFERENCE AND BIASING CIRCUIT
R_SET
SDI
INPUT
DIFFERENTIAL
PAIR
SDI
OUTPUT STAGE &
CONTROL
SDO
SDO
SD/HD
Figure A: GS1578A Functional Block Diagram
GS1578A HD-LINX® II Multi-Rate Dual Slew-Rate
Cable Driver
Data Sheet
33657 - 5
November 2009
www.gennum.com
1 of 16
Proprietary & Confidential