VSC7967 Datasheet, PDF (1/2 Pages) Vitesse Semiconductor Corporation – PON Integrated 155 Mbps to 2.5 Gbps Burst-mode Laser Driver and Limiting Amplifier

TRANSPORT PHYSICAL LAYER
VSC7967
PON Integrated 155 Mbps to 2.5 Gbps Burst-mode Laser Driver and Limiting Amplifier
VSC7967
APPLICATIONS:
f BPON, GE-PON, and GPON burst-mode laser driver
SPECIFICATIONS:
f Package size: 5 mm x 5 mm QFN
f Maximum modulation = 80 mA
f Typical core power = 330 mW
f Operating temperature range = -40 °C to 100 °C
FEATURES:
f APC loop requires no initialization phase
f VSC7967 meets the specification for BPON, GE-PON, and GPON
f Burst enable input supports LVPECL, LVDS, and LVTTL output levels
f Selectable resistance on monitor diode input
f Laser driver crossing point control
f Built-in eye safety support
BENEFITS:
f Laser driver is ready to transmit upon power up
f Allows the VSC7967 to be used in both PON and SFP module
solutions
f Allows PON module to interoperate with multiple upstream devices
f Improves accuracy of the monitor diode input by allowing the user to
select the resistance and capacitance in the input
f Enables the user to adjust the level of the crossing point on the laser
driver output
f No external components are required to meet IEC-60825 eye safety
specifications
APPLICATION DIAGRAM:
GPON ONU Module
VSC7967
MON_SEL
Limiting Amplifier
Connector
Burst-mode Laser Driver
Fault and
Control Logic
SPI
Analog MUX
ADC
Microcontroller
CATV Receive
Video Amplifier
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
VPPD-01356
Revision 1.0