VSC7979, VSC7999
11.3 Gb/s Transimpedance Amplifiers with Photocurrent Monitor and Input Slicing Adjust
A P P L I C A T I O N S :
10G Receiver 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
- DWDM SONET/SDH
Transponders:
- XENPAK, X2, XPAK Modules
- 300-pin MSA Modules
Transceivers:
- XFP Modules
F E A T U R E S :
Single +3.3V Supply
9K
Differential Transimpedance VSC7999
3K
Differential Transimpedance VSC7979
Low Power Consumption for XFP Applications
Photo Linear Current Monitor
Input Slicing Adjust for Fiber Dispersion Compensation
Available in Bare Dice
.
PHYSICAL LAYER PRODUCTS
PB-VSC7979,7999-001
VSC7999
Optical
Distortion
Adjustment
Input
Current
Monitor
SLCDN
OUTP
OUTN
SLCUP
V
PD
IIN
IMON
B E N E F I T S :
Source Terminated Differential Outputs for High Signal Integrity
Linear Photocurrent Monitor Offers Diagnostic Capabilities
Input Slicing Adjust Allows the End User to Optimize the Receiver
Performance for Fiber Dispersion and Non-linearity
S P E C I F I C A T I O N S :
Supply Voltage: 3.3V
10%
Power Dissipation: 210mW VSC7999
Power Dissipation: 180mW VSC7979
Input Noise: 12 pA/ Hz
Bandwidth: 10.5GHz (typical)
Sensitivity : -19dBm (typical)
Max Input Current: 2.5mA p-p (min)
Operating Temperature from -10
C to 85c
B L O C K D I A G R A M :
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 VSC7999 and VSC7979 are 10.7 Gb/s - 12.5 Gb/s high performance,
low power transimpedance amplifiers designed for use in optical
communication systems. The devices are intended for use with a PIN
or an APD photodetector, and are capable of amplifying input currents
over 2.5 mA with low duty-cycle distortion and with little total jitter
change. The VSC7999 and VSC7979 offer 9kohm and 3kohm differential
transimpedance respectively, eliminating the need for an additional
post-amplifier. The outputs limit to a typical differential value of
600mVp-p, increasing the dynamic range of the system by reducing the
possibility of exceeding the input voltage range of the transceiver
device. The VSC7999 and VSC7979 also allow compensation for fiber
non-linearities such as dispersion and EDFA non-linearity.
A P P L I C A T I O N D I A G R A M S :
G E N E R A L D E S C R I P T I O N :
11.3 Gb/s Transimpedance Amplifiers with Photocurrent Monitor and Input Slicing Adjust
VSC7979,VSC7999
Laser
300-Pin, 200-Pin Transponder
Drivers
VSC7983 - EML
VSC7984 - EML
VSC7992 - RZ
VSC8473
CRU/DEMUX/
MUX/CMU
VSC8477
Adaptive XCVR
VSC9271
10G
FEC/PM
10 Gb/s Receiver
Photo
Detector
TIA
VSC7999
VSC7979
uC
Laser
10 Gb/s Receiver
Photo
Detector
TIA
VSC7999
VSC7979
uC
XFP Transceiver
VSC8473
VSC8477
10G SONET
XCVRs
0-12 FR4
VSC8233
Dual Signal
Conditioner
Post Amp +
CDR
CDR+CU
equalization
XFI
Drivers
VSC7983 - EML
VSC7984 - EML
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