ATA7609
10 Gb/s High Overload TIA
PRELIMINARY DATA SHEET - Rev 1.0
FEATURES
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•
•
•
•
•
•
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
I
IN
V
OUT
V
OUT
GND
C
EXT
GND
GND
GND
V
EE
V
EE
GND
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
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•
D1
Die
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
V
BIAS
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.
I
IN
V
OUT
V
OUT
V
REF
DC
Offset
Control
Low Pass
Filter
C
EXT
V
EE
Figure 1: Circuit Block Diagram
10/2002
ANADIGICS [ ANADIGICS, INC ]
