SE1050W
LightCharger
™
10 Gb/s Transimpedance Amplifier
Final
Applications
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SONET/SDH-based transmission systems, test
equipment and modules
OC-192 fibre optic modules and line termination
10 Gigabit Ethernet
Fibre Channel
Serial data systems up to 10.7 Gb/s
Product Description
SiGe Semiconductor offers a portfolio of optical
networking ICs for use in high-performance optical
transmitter and receiver functions, from 155 Mb/s up
to 12.5 Gb/s.
SiGe Semiconductor’s SE1050W is a fully integrated
silicon bipolar transimpedance amplifier, providing
wideband, low noise preamplication of signal current
from a PIN photodetector. It features differential
outputs. A decoupling capacitor on the supply is the
only external component required. A system block
diagram is shown after the functional description, on
page 3.
Noise performance is optimized for 10 Gb/s operation,
with a calculated rms noise based sensitivity of
–20 dBm for 10
-10
bit error rate, using a detector with
0.20 pF capacitance and a responsivity of 0.9 A/W,
with an infinite extinction ratio source.
Features
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Single +5 V power supply
Power dissipation = 430 mW (typ)
Input noise current = 1.4
µA
rms when used with
a 0.2 pF detector
Transimpedance gain = 1.2 kΩ into a 50
Ω
load
(differential)
Input current overload = 2.3 mA pk (+1.1 dBm for
0.9 A/W responsivity - meets 10 Gigabit Ethernet
specification)
Wide linear dynamic range of 17 dB (typ)
50
Ω
single-ended or 100
Ω
differential wire bond
selectable outputs
Bandwidth (-3 dB) = 9.8 GHz
Operates at OC-192 / STM-64 up to 10.7 Gb/s
NRZ rates
Power supply rejection for both single ended and
differential modes of operation
Optimized for PIN photodetectors
Minimal external components, supply decoupling
only
Operating junction temperature range = -40°C to
+100°C
Equivalent to Nortel Networks AE99
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Ordering Information
Type
SE1050W
Package
Bare Die
Remark
Shipped in
Waffle Pack
Functional Block Diagram
VCC or +ve supply
Bandgap
Reference
SE1050
TzAmp
10 Gb/s
Input
Current
TZ_IN
1.29 V
Rf
TzAmp
Output
Driver
5
Ω
0
50
Ω
OUTP
OUTN
Power
Supply
Rejection
50
Ω
ACGND
Wire bond option for single
-ended operation
45-DST-01
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Rev 1.5
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May 24/02
1 of 11
SIGE [ SIGE SEMICONDUCTOR, INC. ]
