Part Number S3170
Revision A – August 12, 2004
S3170
2.5 Gbps Transimpedance Amplifier
FEATURES
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2 GHz Bandwidth
10 kΩ differential transimpedance
Single 3.3 V supply
6.9 pA/√(Hz) typical noise current density
2.2 mA peak to peak max input current
Source terminated differential outputs
Voltage limited outputs
Maximum Die size: 1.27 mm by 1.27 mm
Data Sheet
GENERAL DESCRIPTION
The S3170 is a high-speed transimpedance amplifier
(TIA) for 2.5 Gbps applications. Input currents as high
as 2.2 mA can be amplified with low duty cycle distor-
tion. The low input noise allows signals down to 3.7
µA
(peak to peak) to be detected with a signal to noise
ratio of 22 dB (allows for BER< 1E-10).
The outputs are voltage limited to 1000 mV, differen-
tial, in order to allow a wide input dynamic range
without exceeding the input voltage range of the post
( l i m i t i n g ) a m p l i f i e r. F i g u r e 1 s h o w s a t y p i c a l
application.
APPLICATIONS
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SONET OC-48
Fiber optic data links
Figure 1. Typical Operating Circuit
V
CC
FILT
RBYPASS
V
CC
Zo = 50
Ω
(Limiting Amp and CDR)
SERDATOP
OUTP
DINP
S3170
OUTN
IIN
GND
Zo = 50
Ω
DINN
S3078
SERDATON
Alternate
Connection
AMCC Confidential and Proprietary
1
AMCC [ APPLIED MICRO CIRCUITS CORPORATION ]
