Microchip SY88073L Bedienungsanleitung


Lies die bedienungsanleitung für Microchip SY88073L (15 Seiten) kostenlos online; sie gehört zur Kategorie Nicht kategorisiert. Dieses Handbuch wurde von 5 Personen als hilfreich bewertet und erhielt im Schnitt 4.4 Sterne aus 3 Bewertungen. Hast du eine Frage zu Microchip SY88073L oder möchtest du andere Nutzer dieses Produkts befragen? Stelle eine Frage

Seite 1/15
SY88073L
1G to 12.5G Limiting Post Amplifier with
Programmable Decision Threshold
Revision 1.0
.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
November
8, 2013
Revision 1.0
HBWhelp@micrel.com or (408) 955-1690
General Description
The SY88073L limiting post amplifier is designed for use in
fiber-optic receivers for continuous mode, multi-rate
applications from 1Gbps to 12.5Gbps.
The SY88073L contains a high-bandwidth, high-sensitivity
input stage with user-programmable, wide-range SD
assert/LOS de-assert threshold levels, which enables
optimized system reach. Typically, 4dB of electrical
hysteresis is provided to minimize LOS or SD chattering
caused by noisy input signals. A logic level control pin is
provided to enable user selection of an open-collector,
TTL-compatible LOS or SD status indication signal with an
external 5kΩ to 10kΩ pull-up resistor.
The SY88073L provides faster SD assert and LOS de-
assert times (than typical continuous mode devices) over
the entire differential input voltage range of 10mV
PP
to
1800mV
PP
.
The SY88073L input stage also provides a user-adjustable
decision threshold circuit to optimize BER in noisy
applications such as WDM, where EDFA and Raman
amplifiers contribute uneven noise levels. By applying an
external control voltage, the decision threshold can
typically be adjusted from 30% to 70% from the nominal
50% threshold when the circuit is disabled.
The SY88073L provides integrated 50Ω input and output
impedances to optimize the high-speed signal paths and
reduce component count. The post amplifier outputs have
user-selectable polarity inversion control to simplify PCB
layout. A TTL-compatible JAM input is provided to enable
a SQUELCH function by feeding back the LOS or SD
signal. The JAM input disables only the post amplifier
output.
The SY88073L operates from a single +3.3V power
supply, over temperatures ranging from 40°C to +85°C.
Datasheets and support documentation are available on
Micrel’s web site at: www.micrel.com
.
Features
Multi-rate operation from 1.0625Gbps to 12.5Gbps
Adjustable decision threshold level for offset
compensation or BER optimization
Wide differential input range (10mV
PP
to 1800mV
PP
)
Wide SD de-assert or LOS assert threshold range
4.5mV
PP
to 30mV
PP
4dB typical electrical hysteresis
Fast SD assert and LOS de-assert times
1µs typical; 2µs maximum
Selectable LOS or SD status signal indicator
Selectable RXOUT+/RXOUT polarity inversion
TTL-compatible JAM input with internal pull-up
Low-noise CML data inputs with integrated 50Ω
termination impedance to internal reference V
REF
Low-noise CML data outputs with integrated 50Ω
termination impedance
30ps typical rise/fall times
Wide range power supply: 3.3V ±10%
Industrial temperature range: 40°C to +85°C
Available in a tiny 3mm x 3mm QFN package
Applications
10G/8G Fibre Channel
10Gigabit Ethernet
OTN Equipment
SONET OC192; SDH STM64
WDM/DWDM systems
Markets
Fibre Channel Storage Area Networks
Datacom/Enterprise
High-performance computing
Telecom
Wireless Base Stations


Produktspezifikationen

Marke: Microchip
Kategorie: Nicht kategorisiert
Modell: SY88073L

Brauchst du Hilfe?

Wenn Sie Hilfe mit Microchip SY88073L benötigen, stellen Sie unten eine Frage und andere Benutzer werden Ihnen antworten