VSC7965

TRANSPORT PHYSICAL LAYER

VPPD-01136

Re v ision 1.1

VSC7965

BPON ONU Module

VSC7965

Burst-mode Laser Driver

Connector

Triplexor

Microcontroller

SPI

Fault and

Control Logic

ADC

Analog MUX

TIA at

1490 nm

Laser

at

1310 nm

Analog

Video

Receive

at

1555 nm

CATV Receive

Video Amplifier

Downstream Video at 1555 nm

Downstream Receive Data at 1490 nm

Upstream Data at 1310 nm

Limiting Amplifier

MON_SEL

FEA TURES:

APPLICA TIONS:

APPLICA TION DIAGRAM:

BENEFITS:

APC loop requires no initialization phase

VSC7965 meets the specification for BPON, GE-PON, and GPON

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

Laser driver is ready to transmit upon power up

Allows the VSC7965 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

BPON, GE-PON, GPON burst-mode laser driver

SPECIFICA TIONS:

Package size: 5 mm x 5 mm QFN

Maximum modulation = 80 mA

Typical core power = 330 mW

Operating temperature range = -40 °C to 100 °C

PON Integrated 155 Mbps to 1.25 Gbps Burst-mode Laser Driver and Limiting Amplifier