ATA7609 Datasheet, PDF (1/12 Pages) ANADIGICS, Inc – 10 Gb/s High Overload TIA

ATA7609
10 Gb/s High Overload TIA
PRELIMINARY DATA SHEET - Rev 1.0
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
GND
CEXT
GND
GND
IIN
GND
VEE
VEE
VOUT
VOUT
GND
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
VBIAS
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.
IIN
VREF
DC
Offset
Control
Low Pass
Filter
VOUT
VOUT
CEXT
VEE
Figure 1: Circuit Block Diagram
10/2002