VSC7773 Datasheet, PDF (1/2 Pages) Vitesse Semiconductor Corporation – 1 to 4 Gbps Transimpedance Amplifiers with Photocurrent Monitor

TRANSPORT PRODUCTS
1 to 4 Gbps TIAs
1 to 4 Gbps Transimpedance Amplifiers with Photocurrent Monitor
PRODUCT FAMILY:
VSC7773 VSC7970
VSC7971 VSC7972
VSC7973
APPLICATIONS:
Gigabit Ethernet Transceivers
Fibre Channel Transceivers (1x, 2x and 4x)
SONET/SDH Transceivers
SONET/SDH Transponders
4.25 Gbps Receiver Optical Sub-Assemblies
FEATURES:
Single +3.3 V Supply
5 kΩ Differential Transimpedance
Low Power Consumption for SFP/SFF Applications
Differential Outputs with Linear Current Monitor
Available as Bare Dice or in a 4-pin or 5-pin TO-46 Package
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
SPECIFICATIONS:
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
Power Dissipation: 82.5 mW
Supply Voltage: 3.3 V
Operating Temperature from -40°C to 85°C
- 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)
BLOCK DIAGRAM (Die):
FILTER
IN
500Ω
10pF
Monitor
VSC7971
+3.3V
VCC
GND
50Ω
50Ω
VOUTP
VOUTN
Outputs need to
be AC-coupled
0.1µF
0.1µF
IMON
PB-TIAFAMILY-001