CS3170 Datasheet, PDF (1/11 Pages) Applied Micro Circuits Corporation – 2.5 Gbps Transimpedance Amplifier

Part Number S3170
Revision A – August 12, 2004
S3170
2.5 Gbps Transimpedance Amplifier
Data Sheet
FEATURES
• 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
APPLICATIONS
• SONET OC-48
• Fiber optic data links
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
(limiting) amplifier. Figure 1 shows a typical
application.
Figure 1. Typical Operating Circuit
V_CC
FILT V_CC
RBYPASS
OUTP
S3170
OUTN
IIN
GND
Zo = 50 Ω
Zo = 50 Ω
(Limiting Amp and CDR)
DINP
SERDATOP
S3078
DINN
SERDATON
Alternate
Connection
AMCC Confidential and Proprietary
1