PHYSICAL LAYER PRODUCT
VSC7984
F E A T U R E S :
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
A P P L I C A T I O N S :
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
B E N E F I T S :
Unique architecture provides excellent output impedance, further
reducing output jitter.
Extended case temperature range (-10
C to 95C) 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.
S P E C I F I C A T I O N S :
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 95C
- Package:
VSC7984-W: Dice
VSC7984YF: 24-pin 4mm x 4mm QFN
B L O C K D I A G R A M :
TRANSPORT PRODUCT
PB-VSC7984-001
50
50
50
50
DCC
VMOD
Retimer
Control Circuitry
VEE
VREF
VTEMP
ENABLE
CSEL
CLKN
CLK
DATA
V
CC
DATAN
PW
PWN
VOFS
OUT
OUTN
V
CC
For more information on Vitesse Products visit the Vitesse web site
at www.vitesse.com or contact Vitesse Sales at (800) VITESSE
or sales@vitesse.com
2003 Vitesse Semiconductor Corporation
741 Calle Plano
Camarillo, CA 93012, USA
Tel: +1 805.388.3700
Fax: +1 805.987.5896
www.vitesse.com
The VSC7984 is a 11.3Gb/s clocked
modulator driver for SONET/SDH and
10GbE applications. The device provides
selectable data retiming to improve jitter
performance and controls for output bias
voltage, modulation voltage, and duty
cycle. Internal operational amplifiers and on-chip voltage
A P P L I C A T I O N D I A G R A M S :
O P T I C A L E Y E D I A G R A M S :
reference preclude the need for additional off-chip circuitry to
stabilize modulation and offset voltages. A temperature
monitor output indicates temperature to simplify testing and
to verify the device is not operated beyond its recommended
maximum temperature. The VSC7984 is available in a 4mm x
4mm 24-lead plastic package, or in die form.
G E N E R A L D E S C R I P T I O N :
11.3 Gb/s Electroabsorption Modulator Driver
VSC7984
Laser
Drivers
VSC7983 - EML
VSC7984 - EML
VSC7992 - RZ
VSC8473
CRU/DEMUX/
MUX/CMU
VSC8477
Adaptive XCVR
VSC9271
10G
FEC/PM
10Gbps Receiver
Photo
Detector
TIA
VSC7999
VSC7979
300-Pin, 200-Pin Transponder
Laser
VSC7983
VSC7984
EML
DRIVER
0-12" FR4
C
C
VSC8233
Dual Signal
Conditioner
Post Amp +
CDR
CDR+CU
equalization
XFI
10 Gb/s Receiver
Photo
Detector
TIA
VSC7999
VSC7979
VSC8473
VSC8477
10G SONET
XCVRs
XFP Transceiver
PDF 
ZIP