08/2001

FEATURES

·

Single +5 Volt Supply

·

Automatic Gain Control

·

-32 dBm Sensitivity

·

0 dBm Optical Overload

·

550 MHz Bandwidth

APPLICATIONS

·

SONET OC-12 /SDH STM-4 (622Mb/s)

Receiver

·

FITL

·

BISDN

·

Workstation Interconnects

·

Low Noise RF Amplifier

PRODUCT DESCRIPTION

Figure 1: Equivalent Circuit

ATA06211

AGC Transimpedance Amplifier

SONET OC-12

PRELIMINARY DATA SHEET-Rev 4

D1

The ANADIGICS ATA06211 is a 5V low noise

transimpedance amplifier with AGC designed to be

used in OC-12/STM-4 fiber optic links. The device is

used in conjunction with a photodetector (PIN diode

or avalanche photodiode) to convert an optical signal

into an output voltage. The ATA06211 offers a

bandwidth of 550MHz and a dynamic range of 32dB.

It is manufactured in a GaAs MESFET process and

is available in bare die form.

V

DD2

V

OUT

C

AGC

GND

V

DD1

I

IN

US PATENT

GND

or

neg.supply

VGA

- 35

70K

+

4pF

+ 0.8

AGC

19 K

Photodector cathode must be connected

to Iin for proper AGC operation

I

IN