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PDF SE1031W Data sheet ( Hoja de datos )
| Número de pieza | SE1031W | |
| Descripción | LightCharger 2.5 Gb/s Transimpedance Amplifier LP Final | |
| Fabricantes | SiGe Semiconductor Inc. | |
| Logotipo |  |
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SE1031W
LightCharger™ 2.5 Gb/s Transimpedance Amplifier LP
Final
Applications
§ SONET/SDH-based transmission systems, test
equipment and modules
§ OC-48 fibre optic modules and line termination
§ ATM over SONET/SDH
§ Gigabit Ethernet
§ Fibre Channel
Features
§ Single +3.3 V power supply
§ Power dissipation = 110 mW (typ)
§ Input nois e current = 360 nA rms when used with
a 0.5 pF detector
§ Transimpedance gain = 2.3 kΩ into a 50 Ω load
(differential)
§ On-chip automatic gain control gives input
current overload of 2.6 mA pk and max output
voltage swing of 300 mV pk-pk
§ Differential 50 Ω outputs
§ Bandwidth (-3 dB) = 2.4 GHz
§ Wide data rate range = 50 Mb/s to 2.5 Gb/s
§ Constant photodiode reverse bias voltage = 1.5 V
(anode to input, cathode to VCC)
§ Minimal external components, supply decoupling
only
§ Operating junction temperature range = -40°C to
+125°C
§ Equivalent to Nortel Networks AB89-A4A
Ordering Information
Type
SE1031W
Package
Bare Die
Remark
None
Functional Block Diagram
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 SE1031 is a fully integrated,
silicon bipolar transimpedance amplifier; providing
wideband, low noise preamplification of signal current
from a photodetector. It features differential outputs,
and incorporates an automatic gain control
mechanism to increase dynamic range, allowing input
signals up to 2.6 mA peak. A decoupling capacitor on
the supply is the only external circuitry required. A
system block diagram is shown after the functional
description, on page 3.
Noise performance is optimized for 2.5 Gb/s
operation, with a calculated rms noise based
sensitivity of –26 dBm for 10-10 bit error rate, achieved
using a detector with 0.5 pF capacitance and a
responsivity of 0.9 A/W, with an infinite extinction ratio
source.
SE1031
TzAmp
2.5 Gb/s
VCC or +ve supply
Automatic Gain Control
Integrator Rectifier
Input
Current
TZ_IN
Rf
Tz Amp
Bandgap
Reference
Output
Driver
50 Ω
50 Ω
OUTP
OUTN
54-DST-01 § Rev 1.3 § Apr 11/02
1 of 7
1 page  
SE1031W
LightCharger™ 2.5 Gb/s Transimpedance Amplifier LP
Final
AC Electrical Characteristics
Symbol
BW (3dB)
Tz
Dri
Voutmax
Flf
lOL
Pol
Nrms
Sens
Parameter
Small Signal Bandwidth at –3dB point
Differential Transimpedance (50 Ω on each output,
f = 100 MHz)
Input Data Rate
Maximum Differential Output Voltage
Low Frequency Cut-off
Input Current before overload (2.5 Gb/s NRZ data)
Optical Overload
Input Noise Current (in 2 GHz)
Optical Sensitivity [ calculated from input noise
spectral density only, (10-10 BER) ]
Min
1.8
1.6
50
2600
+1.6
Typ Max
2.4
2.3 3.1
2500
300
10 20
360 500
–26
DC and AC electrical characteristics are specified under the following conditions:
Supply Voltage (VCC).........................................3.1 V to 3.5 V
Junction Temperature (Tj)..................................–40°C to 125°C
Load Resistor (RL)...............................................50 Ω AC coupled via 220 nF, for each output
Photodetector Capacitance (Cd).......................0.5 pF
Input bond wire inductance................................1 nH
Photodetector responsivity.................................0.9 A/W
Transimpedance (Tz) measured with 4 µA mean photocurrent
Unit
GHz
kΩ
Mb/s
mV pk-pk
kHz
µA pk-pk
dBm
nA rms
dBm
54-DST-01 § Rev 1.3 § Apr 11/02
5 of 7
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet SE1031W.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| SE1031W | LightCharger 2.5 Gb/s Transimpedance Amplifier LP Final | SiGe Semiconductor Inc. |
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