Microchip SY88813V Bedienungsanleitung
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M9999-040504
hbwhelp@micrel.com or (408) 955-1690
DESCRIPTION
The SY88813V features:
■Single 3.3V or 5V power supply
■Up to 155Mbps operation
■Low noise PECL data outputs
■Chatter-free PECL Signal Detect (SD) output
■TTL /EN input
■Programmable SD level set (SDLVL)
■Available in a tiny 10-pin MSOP (3mm××××
×3mm)
package
The SY88813V evaluation board features:
■AC-coupled I/O with SMA connectors
■Single potentiometer to set SDLVL
■50Ω input network termination
FUNCTIONAL FEATURES
3.3V/5V 155Mbps PECL LOW-POWER
LIMITING POST AMPLIFIER
W/PECL SIGNAL DETECT
SY88813V
EVALUATION BOARD
AVAILABLE MEASUREMENTS
The SY88813V evaluation board allows the following
measurements:
■Frequency performance
■Output eye pattern generation
■Mask testing
■Jitter
■Output rise/fall time
■BER testing
■Hysteresis measurement
Rev.: AAmendment: /0
Issue Date:April 2004
The SY88813V low-power limiting post amplifier is
designed for use in fiber-optic receivers. The device connects
to typical transimpedance amplifiers (TIAs). The linear signal
output from TIAs can contain signicant amounts of noise
and may vary in amplitude over time. The SY88813V
quantizes these signals and outputs PECL level waveforms.
The SY88813V operates from a single +3.3V10% or±
+5V ±10% power supply, over temperatures ranging from
–40°C to +85°C. With its wide bandwidth and high gain,
signals with data rates up to 155Mbps and as small as
5mVpp can be amplified to drive devices with PECL inputs.
The SY88813V generates a PECL signal-detect output.
A programmable signal-detect level set pin (SDLVL) sets
the sensitivity of the input amplitude detection. SD asserts
high if the input amplitude rises above the threshold set by
SDLVLand deasserts low otherwise. /EN deasserts the true
output signal without removing the input signal. Typically
4.6dB SD hysteresis is provided to prevent chattering.
This manual provides information on the SY88813V
evaluation board. It should be used in conjunction with the
SY88813V datasheet, which contains full specications of
the SY88813V.
The SY88813V evaluation board enables fast and
thorough evaluation of the SY88813V 155Mbps PECL low-
power limiting post amplier. The board is an easy-to-use,
single-layer high-speed microstrip design. It is designed to
be driven by a high-speed 155Mbps pattern generator and
provides on-board 50 terminations for the generator’sΩ
outputs. The input termination network also provides the
required input bias of VCC–1.3V for the SY88813V.
The SY88813V evaluation board is intended to be
terminated to a 50 scope and provides for simple userΩ
adjustability of the SD threshold through the adjustment of
an on-board potentiometer. This allows the user to evaluate
various parameters of the SY88813V, as listed in the
“Available Measurements” section of this document.
All data sheets and support documentation can be found
on Micrel’s web site at www.micrel.com.
EVALUATION BOARD
Figure 1.SY88813V Evaluation Board
Produktspezifikationen
| Marke: | Microchip |
| Kategorie: | Nicht kategorisiert |
| Modell: | SY88813V |
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