PHYSICAL LAYER PRODUCT

VSC7984

FEA TURES:

Single +5V or –5.2V Supply

Selectable Data Retiming

Output Enable

AC-Coupled Inputs

Internally-Stabilized Modulation and Bias Outputs

Excellent Output Return Loss

300mV Differential Data Input Sensitivity

Programmable Output Data Eye Crossing Point

2.5V On-chip Voltage Reference

Available in Bare Dice, 32-pin 5mm x 5mm QFN, or

32-pin Metal-glass QFP

APPLICA TIONS:

10G Transmit Optical Sub-Assemblies

- 9.983 Gb/s SONET OC-192/SDH STM-64

- 10.3 Gb/s Ethernet

- 10.5 Gb/s Fibre Channel

- 10.7 Gb/s OTN G.709/G.975

- 12.5 Gb/s SONET with FEC Optical

- DWDM SONET/SDH

Transponders

- XENPAK, X2, XPAK modules

- 300pin MSA modules

Transceivers

- XFP modules

11.3 Gb/s Electroabsorption Modulator Driver

BENEFITS:

Unique architecture provides excellent output impedance, further

reducing output jitter.

Extended case temperature range (-10

°C to 95°C) providing more

thermal margin for system design.

Guaranteed operation at worst-case duty cycle (85% crossing point),

improving yield by enabling the use of a wider range of modulators.

Internal operational amplifiers reduce off-chip circuit complexity and

component count.

Output enable for both eye safety and low power in sleep modes

required by new module MSAs.

SPECIFICA TIONS:

VSC7984

- Supply Voltage: +5V or –5.2V

- Supply Current: 290mA

- Input Sensitivity: 300mV to 1V Single Ended or Differential

- Data Rate: 11.3 Gb/s

- Clock Rate: 11.3 GHz

- Output Offset Adjust: 0 to 1.5V

- Output Modulation Voltage: 1.4 to 2.8V

- Output Rise Fall Time: 25 ps

- Data Eye Crossing Point Adjustment: 25% to 85%

- Operating Temperature from -10

°C to 95°C

- Package:

• VSC7984-W: Dice

• VSC7984YF: 24-pin 4mm x 4mm QFN

BLOCK DIAGRAM:

TRANSPORT PRODUCT

PB-VSC7984-001

50

Ω

50

Ω

50

Ω

50

Ω

DCC

VMOD

Retimer

Control Circuitry

VEE

VREF

VTEMP

ENABLE

CSEL

CLKN

CLK

DATA

DATAN

PW

PWN

VOFS

OUT

OUTN