TRANSPORT PRODUCTS
1 to 4 Gbps TIA
s
1 to 4 Gbps Transimpedance Amplifiers with Photocurrent Monitor
BENEFITS:
Source Terminated Differential Outputs With Linear Photocurrent Monitor
Offers Diagnostic Capabilities Without Sacrificing High Signal Integrity
On-chip Filter Provides Positive Bias to the Photodetector, Eliminating
the Need for External Components, Saving Space and Cost
Available in a TO-46 Package, Eliminating Time and Costs Associated
With the Design, Assembly and Test of the Receiver
P R O D U C T F A M I LY:
VSC7773
VSC7971
VSC7973
VSC7970
VSC7972
S P E C I F I C AT I O N S :
Input Noise: 550 nA (rms)
Supply Current: 25 mA
Sensitivity : -23 dBm (long wave) -21.5 dBm (short wave)
Max Input Current: 2.2 mA Peak to Peak Current
A P P L I C AT I O N S :
Power Dissipation: 82.5 mW
Gigabit Ethernet Transceivers
Supply Voltage: 3.3 V
Fibre Channel Transceivers (1x, 2x and 4x)
Operating Temperature from -40°C to 85°C
SONET/SDH Transceivers
SONET/SDH Transponders
4.25 Gbps Receiver Optical Sub-Assemblies
- VSC7773: TO-46 (with 850nm PIN detector)
- VSC7970: Dice or TO-46 (with 1310nm/1550nm PIN detector)
- VSC7971: Dice or TO-46 (with 1310nm/1550nm PIN detector)
- VSC7972: Dice or TO-46 (with 850nm pin detector)
- VSC7973: Dice or TO-46 (with 850nm pin detector)
F E AT U R E S :
BLOCK DIAGRAM (Die):
Single +3.3 V Supply
VSC7971
5 kΩ Differential Transimpedance
Low Power Consumption for SFP/SFF Applications
Differential Outputs with Linear Current Monitor
FILTER
10pF
500Ω
VCC
+3.3V
GND
Outputs need to
be AC-coupled
VOUTP
50Ω
IN
50Ω
Available as Bare Dice or in a 4-pin or 5-pin TO-46 Package
Monitor
VOUTN
0.1µF
0.1µF
IMON
PB-TIAFAMILY-001
VITESSE [ VITESSE SEMICONDUCTOR CORPORATION ]
