10/2002

DC

Offset

Control

Low Pass

Filter

ATA7609

10 Gb/s High Overload TIA

PRELIMINARY DATA SHEET - Rev 1.0

D1

Die

FEATURES

•

1800

Ω Differential Transimpedance

•

3 mApp Maximum Input Current

•

14 pA/

√Hz Input Noise Current Density

•

Single –5.2 V Power Supply

•

Low Group Delay

•

Outputs DC or AC Coupled

•

Same Functionality as ATA7603 with the Output

Polarities Reversed

APPLICATIONS

•

SONET/SDH OC-192 /STM-64 VSR,

Short-Reach, Intermediate-Reach, and

Long-Reach Receivers

•

10 Gb/s Ethernet

•

Fiber optic receivers, transceivers, and

transponders

PRODUCT DESCRIPTION

The ANADIGICS ATA7609 is a –5.2 V high-speed

transimpedance amplifier (TIA) designed for

10 Gb/s optical receiver applications available in

bare die form and manufactured using an InGaP

based HBT process. The device is used in

conjunction with a photodetector to convert an

optical signal into a differential output voltage that

can be AC or DC coupled to a post amplifier. The

ATA7609 has an internal overload support circuit

and can accept optical inputs as high as +3 dBm.

With its low noise and high optical overload capability,

the device is well suited for 10 Gb/s Ethernet and

OC-192 Very Short-Reach (VSR), Short-Reach,

Intermediate-Reach and Long-Reach optical

receivers, transceivers and transponders. The

ATA7609 is identical to the ATA7603 but with the

output polarities reversed.

Figure 1: Circuit Block Diagram

GND

GND

GND

GND

GND