VSC5522
A P P L I C A T I O N S :
Metro and Long Haul LiNbO
3
NRZ Applications
Sonet OC-192 / SDH STM-64 Transmitters
G.709, G.975, GbE, & Proprietary FEC Systems
Line Cards
Transponder Modules
F E A T U R E S :
Wide Output Dynamic Range
Ultra-small 16mm x 16mm BGA Package
High Input Sensitivity
Low Jitter
Precision Output Amplitude Monitor Circuitry
Single-ended or Differential Input
Precise Duty Cycle Control
B E N E F I T S :
Surface Mount Package
Superior Electrical / Optical Eye Quality
Easy Application of Closed-loop Amplitude Control
Differential Input Accommodates Inverting or Non-inverting
Implementations
Input Limiting Amplifier for Consistent Output Quality
S P E C I F I C A T I O N S :
9.9 12.5 Gb/s NRZ Datarates
250mVp-p Single-ended Input Sensitivity
3.0 5.7Vp-p Output Amplitude Range
Typical S11 and S22 of 14dB
Jitter 10pspp Typical
Rail Ripple 5% Typical
Output Amplitude Stability 1% Typical (under closed loop control)
+5V / -5.2V Supplies
40-60% Duty Cycle Control Range
B L O C K D I A G R A M :
9.9 Gb/s 12.5 Gb/s NRZ LiNbO
3
Modulator Driver
TRANSPORT PRODUCTS
PB-VSC5522-001
NEGATIVE BIAS CONTROL
BIAS
NEGATIVE BIAS CONTROL
BIAS
CPC
A
2
LA
A
1
NEGATIVE BIAS CONTROL
VEE
GND
INTERNAL
BIAS-T
INB
OUT
VCC
VC
DET, REF
GEN.
IN
DET REF
GND
AMPLITUDE
CONTROL
CIRCUITRY
For more information on Vitesse Products visit the Vitesse web site
at www.vitesse.com or contact Vitesse Sales at (800) VITESSE
or send email to: 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 VSC5522 is a precision LiNbO3 modulator driver. The input can be driven single-ended or
differentially and features a single-ended sensitivity of 250mV. The VSC5522 provides a high
quality single-ended output with amplitude control, precision amplitude monitoring circuitry,
and eye crossing point control. The VSC5522 provides a digital limiting amplifier function to
ensure high quality and very repeatable output signal characteristics even with less than
optimal input signals. Key specifications include ultra-small form factor, fast rise/fall times,
low output jitter, high voltage drive capability, high input sensitivity and low rail ripple.
Furthermore, the VSC5522 amplitude control feature is specifically designed to provide
consistent output shape and crossing point over the full range of control.
G E N E R A L D E S C R I P T I O N :
VSC5522
A P P L I C A T I O N D I A G R A M :
9.9 Gb/s 12.5 Gb/s NRZ LiNbO
3
Modulator Driver
FEC / Framer
ASIC
MUX-CMU
VSC5522
LiNbO3
Optical Modulator
CW Laser
Modulated Optical Signal
Optical Fiber
FEC
VSC9271
VSC6131
VSC6134
FRAMER
VSC9186
VSC9118
MUX
VSC1233
VSC1235
VSC1237
XCVR
VSC8479
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