Microchip SY88813V Manual


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1
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 (SD LVL)
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 SD LVL
50 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.: A Amendment: /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 signicant 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 +3.3V 10% 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
SDLVL and 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 specications of
the SY88813V.
The SY88813V evaluation board enables fast and
thorough evaluation of the SY88813V 155Mbps PECL low-
power limiting post amplier. 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’s
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 user
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
2
SY88813V Evaluation Board
Micrel
M9999-040504
hbwhelp@micrel.com or (408) 955-1690
MEASUREMENT SETUP
SMA
SMA C2
0.1µF
C1
0.1µF
C5
0.1µF
C4
0.1µF
C6
0.1µF
VCC
VCC
R3
20k
Trimpot
R2
50
R6
200
R1
50
SMA
SMA
C8
22µF
C7
0.1µF
TRIGGER
OUT
Header Pins J1
BLM21A102F
FB1
Agilent 83752A
Synthesized Sweeper
RFOUT
CLOCK INPUT
DATA OUT
/DATA OUT
Agilent 70004A
Display
Agilent 70843B
Error Performance Analyzer
Agilent E3620A
Power Supply
Tektronix
DMM157
Multimeter
R5
200
R4
200
3
4
5
2
/EN
/EN
SD
DIN
/DIN
VREF
SDLVL GND
SD
11
2
3
VCC 10
DOUT 9
/DOUT 9
7
6
SY88813V
VCC
GND
Agilent 86100A
Wide-Bandwidth Oscilloscope
CH1 CH2
TRIGGER
IN
Figure 2. Setup for Measurements
Equipment used for measurements:
1. Agilent 83752A Synthesized Sweeper
2. Agilent 70004A Display
3. Agilent 70843B Error Performance Analyzer
4. Agilent 86100A Wide-Bandwidth Oscilloscope
5. Two (2) MCL BW S15W2 40dB attenuators
6. Agilent E3620A DC Power Supply
7. Tektronix DMM157 Multimeter
8. Matched High-Speed Cables w/SMA Connectors
Note:
Items 1 through 3 constitute the BERT stack.


Produkt Specifikationer

Mærke: Microchip
Kategori: Ikke kategoriseret
Model: SY88813V

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