AMT8504 Datasheet, PDF (1/12 Pages) ANADIGICS, Inc – 1.25 Gb/s Integrated 850nm MSM-TIA

AMT8504
1.25 Gb/s Integrated 850 nm MSM-TIA
PRELIMINARY DATA SHEET - Rev 1
FEATURES
· Differential Output TIA
· 3.3V Operation
· Automatic Gain Control
· Integrated 850nm MSM detector & TIA
· 100 m m Detector Diameter
· TO-46 Ultra Flat Window or Lens
Hermetic Package
· High Reliability
· -5 to +80°C Operating Temperature Range
APPLICATIONS
· Gigabit Ethernet (1.250Gb/s)
· Fibre Channel (1.0625 Gb/s)
PRODUCT DESCRIPTION
The ANADIGICS AMT8504 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
VDD
2
TO-46F
Ultra Flat
Window
Package
TO-46L
Ball Lens
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 and TO46
lens packaged receiver pass stringent reliability
requirements. These products are readily designed
into receivers and transceivers for Gigabit Ethernet
and Fibre Channel applications.
AGC
OUT
1
3
OUT
US Patents: 5047728, 5646573
P_IN
Charge 7.5 GHz
Pump
Osc
4
Figure 1: Equivalent Circuit
07/01