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Número de pieza | VSC7928RA | |
Descripción | SONET/SDH 3.2Gb/s Laser Diode Driver | |
Fabricantes | ETC | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de VSC7928RA (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
No Preview Available ! VITESSE
SEMICONDUCTOR CORPORATION
Preliminary Data Sheet
VSC7928
SONET/SDH 3.2Gb/s Laser Diode Driver
Features
Applications
• Rise Times Less Than 100ps
• High Speed Operation
(Up to 3.2Gb/s NRZ Data)
• Differential or Single-Ended Inputs
• SONET/SDH @ 622Mb/s, 1.244Gb/s,
2.488Gb/s, and 3.125Gb/s
• Full Speed Fibre Channel (1.062Gb/s)
• Single Supply
• ECL Compatible Clock and Data Inputs
• Direct Access to Modulation and Bias FETs
• Data Density Monitors
• On-chip Reclocking Register
• On-chip Mux for Clocked or Non-clocked Appli-
cations
• On-chip 50Ω Input Termination: Clock and Data
• Enhanced Pinout
General Description
The VSC7928 is a single 5V supply, 3.2Gb/s laser diode driver with direct access to the laser modulation
and bias FETs. Laser bias and modulation currents are set by external components allowing precision monitor-
ing and setting of the current levels. Data density outputs are provided to allow the user to adjust the laser bias
in high unbalanced data applications. Clock and data inputs are differentially terminated to 50Ω.
VSC7928 Block Diagram
DIN
DINTERM*
NDIN
50 Ω**
50 Ω**
DQ
M
U
X
CLK
CLKTERM*
NCLK
50 Ω**
50 Ω**
*Terminated to Off-chip Capacitor
**On Die Components
SEL
MK
NMK
DCC
VIP
VIB
IMOD
IOUT
NIOUT
IBIAS
IBIAS
MIP MIB
G52246-0, Rev 3.0
04/05/01
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: [email protected]
Internet: www.vitesse.com
Page 1
1 page VITESSE
SEMICONDUCTOR CORPORATION
Preliminary Data Sheet
VSC7928
SONET/SDH 3.2Gb/s Laser Diode Driver
SOURCE
SOURCE
SOURCE
Figure 3: Single-Ended AC-Coupled
0.1µf
DIN
(CLK)
X
DINTERM
(CLKTERM)
0.1µf
NDIN
GND
(NCLK)
0.1µf
X
X
GND
GND
50 4.0K
-2.0V
50 6.4K
VSS
Figure 4: Differential AC-Coupled
0.1µf
0.1µf
0.1µf
GND
DIN
(CLK)
X
DINTERM
(CLKTERM)
X
NDIN
(NCLK)
X
GND
50 4.0K
-2.0V
50 6.4K
VSS
Figure 5: Differential DC-Coupled
DIN
(CLK)
X
GND
DINTERM
(CLKTERM)
X
NDIN
(NCLK)
X
50
50
4.0K
-2.0V
6.4K
-2.0V
VSS
G52246-0, Rev 3.0
04/05/01
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
Internet: www.vitesse.com
Page 5
5 Page |
Páginas | Total 10 Páginas | |
PDF Descargar | [ Datasheet VSC7928RA.PDF ] |
Número de pieza | Descripción | Fabricantes |
VSC7928RA | SONET/SDH 3.2Gb/s Laser Diode Driver | ETC |
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