09/2003

AMT8312

2.5 Gb/s 850 nm PIN-TIA

PRELIMINARY DATA SHEET - Rev 1.0

FEATURES

•

2.5 Gb/s Differential Output TIA

•

3.3 V Operation

•

1800 MHz Bandwidth

•

-23 dBm Typical Sensitivity

•

0 dBm Optical Overload

•

Photocurrent Monitor

•

100 µm 850 nm PIN Photodetector

•

TO-46 5 Pin Lens Package

APPLICATIONS

•

SONET OC-48/SDH STM-16 (2.488 Gb/s)

•

2 x Fibre Channel (2.125 Gb/s)

•

2.5 Gb/s Infiniband

•

Fibre Channel/Gigabit Ethernet (1.0625/1.25 Gb/s)

Figure 1: Functional Block Diagram

PRODUCT DESCRIPTION

The ANADIGICS AMT8312, packaged in a 5 pin

TO-46 lens can, is a 3.3 V integrated photodetector

and transimpedance amplifier (TIA) used to convert

a short wavelength (850 nm) input optical signal into

a differential output voltage. The AMT8312 has a

bandwidth of 1.8 GHz, a dynamic range of over

23 dB and a photocurrent monitor with an output that

is proportional to the average input optical power.

These devices are readily designed into receivers,

transceivers and transponders for SONET, Fibre

Channel and Infiniband applications.

T46L

TO-46 5 pin Ball Lens

Package

Offset

Control

DC Compensation

VOUTP

VOUTN

1

4

P

IN

5

R

F

VCC

2

3

IMON