TRANSPORT PHYSICAL LAYER
VSC7967
PON Integrated 155 Mbps to 2.5 Gbps Burst-mode Laser Driver and Limiting Amplifier
A P P L I C AT I O N S :
BPON, GE-PON, and GPON burst-mode laser driver
S P E C I F I C AT I O N S :
Package size: 5 mm x 5 mm QFN
VSC7967
Maximum modulation = 80 mA
Typical core power = 330 mW
Operating temperature range = -40 °C to 100 °C
F E AT U R E S :
APC loop requires no initialization phase
VSC7967 meets the specification for BPON, GE-PON, and GPON
BENEFITS:
Laser driver is ready to transmit upon power up
Allows the VSC7967 to be used in both PON and SFP module
solutions
Allows PON module to interoperate with multiple upstream devices
Improves accuracy of the monitor diode input by allowing the user to
select the resistance and capacitance in the input
Enables the user to adjust the level of the crossing point on the laser
driver output
No external components are required to meet IEC-60825 eye safety
specifications
Burst enable input supports LVPECL, LVDS, and LVTTL output levels
Selectable resistance on monitor diode input
Laser driver crossing point control
Built-in eye safety support
A P P L I C AT I O N D I A G R A M :
GPON ONU Module
VSC7967
MON_SEL
Triplexor
VSC7970
at
1490 nm
Laser at
1310 nm
Analog
Video
Receive
at
1555 nm
Downstream Video at 1555 nm
Downstream Receive Data at 1490 nm
Upstream Data at 1310 nm
Limiting Amplifier
Burst-mode Laser Driver
Fault and
Control Logic
Connector
Analog MUX
SPI
ADC
Microcontroller
CATV Receive
Video Amplifier
VPPD-01356
Revision 1.0
VITESSE [ VITESSE SEMICONDUCTOR CORPORATION ]
