AMT128503 Datasheet, PDF (1/12 Pages) ANADIGICS, Inc – 1.25Gb/s Integrated 850nm MSM-TIA

AMT128503
1.25 Gb/s Integrated 850 nm MSM-TIA
Data Sheet - Rev. 0
FEATURES
· 1.25 Gb/s Differential Output TIA
· 3.3V Operation
· Automatic Gain Control
· 850nm Photodetector with
100 mm x 100 mm Active Area
· Integrated MSM detector & TIA
· TO-46 Ultra Flat Window or Lens
Package
· TO-56 Ultra Flat Window Package
APPLICATIONS
· Gigabit Ethernet (1.250Gb/s)
· Fibre Channel (1.0625 Gb/s)
PRODUCT DESCRIPTION
The ANADIGICS AMT128503 is a 3.3V monolithically
integrated Metal-Semiconductor-Metal (MSM)
photodetector and transimpedance amplifier (TIA)
used to convert an 850nm input optical signal into a
differential output voltage, and is manufactured in
ANADIGICS’ 6” GaAs wafer fabrication facility. The
integrated MSM and TIA receiver maximizes the
receiver performance by minimizing the
photodetector input parasitics to the TIA and
TO-46F
Ultra Flat
Window
Package
TO-46L
Lens
Package
TO-56F
Ultra Flat
Window
Package
internally biasing the photodetector to achieve high
sensitivity, bandwidth and overload performance. As
an integrated product the reliability is inherently
better than a discrete solution, and both the MSM-TIA
integrated circuit and TO46 flat window, TO46 lens
and TO56 flat window packaged receiver pass
stringent reliability requirements. These products
are readily designed into receivers and transceivers
for Gigabit Ethernet and Fibre Channel applications.
Figure 1: AMT128503 Equivalent Circuit
VDD
4K
P_IN
AGC
US Patents: 5047728, 5646573
Charge
Pump
6.5 GHz
Osc
VOUT
VOUT
Ground