AMT128502A Datasheet, PDF (1/8 Pages) ANADIGICS, Inc – 1.25Gb/s Integrated 850nm MSM-TIA

FEATURES
· 1.25 Gb/s Differential Output TIA
· 5V Operation
· Automatic Gain Control
· 850nm Photodetector with
100 mm x 100 mm Active Area
· Integrated MSM detector & TIA
· TO-46 Ultra Flat Window
APPLICATIONS
· Gigabit Ethernet (1.250Gb/s)
· Fibre Channel (1.0625 Gb/s)
AMT128502A
1.25 Gb/s Integrated 850 nm MSM-TIA
Data sheet - Rev. 0
T46F
TO-46 Ultra Flat Window
Package
Product Description
The ANADIGICS AMT128502A is a 5V 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
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 packaged
receiver pass stringent reliability requirements.
These products are readily designed into receivers
and transceivers for Gigabit Ethernet and Fibre
Channel applications.
Figure 1: AMT128502A Equivalent Circuit
VDD
2
4K
P_IN
AGC
US Patents: 5047728, 5646573
Charge
Pump
6.5 GHz
Osc
OUT
1
3
OUT
4