Microchip SY88713V Bedienungsanleitung
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SY88713V
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SY88713V Evaluation Board
Micrel
hbwhelp@micrel.com or (408) 955-1690
DESCRIPTION
The SY88713V features:
■ Single 3.3V or 5V power supply
■ Up to 622Mbps 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 SY88713V evaluation board features:
■ AC-coupled I/O with SMA connectors
■ Single potentiometer to set SD
LVL
■ 50Ω input network termination
FUNCTIONAL FEATURES
3.3V/5V 622Mbps PECL LOW-POWER
LIMITING POST AMPLIFIER
w/PECL SIGNAL DETECT
SY88713V
EVALUATION BOARD
AVAILABLE MEASUREMENTS
■ Frequency performance
■ Output eye pattern generation
■ Mask testing
■ Jitter
■ Output rise/fall time
■ BER testing
■ Hysteresis measurement
Rev.: A Amendment: /0
Issue Date: March 2004
The SY88713V 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 significant amounts of noise
and may vary in amplitude over time. The SY88713V
quantizes these signals and outputs PECL level waveforms.
The SY88713V operates from a single +3.3V or +5V
power supply, over temperatures ranging from –40°C to
+85°C. With its wide bandwidth and high gain, signals with
data rates up to 622Mbps and as small as 5mV
pp
can be
amplified to drive devices with PECL inputs.
The SY88713V generates a PECL SD output. A
programmable, signal-detect level set pin (SD
LVL
) sets the
sensitivity of the input amplitude detection. SD asserts high
if the input amplitude rises above the threshold set by SD
LVL
and de-asserts low otherwise. /EN de-asserts the true output
signal without removing the input signal. Typically 4.6dB
SD hysteresis is provided to prevent chattering.
This guide provides information on the SY88713V
evaluation board. It should be used in conjunction with the
SY88713V data sheet, which contains full specifications of
the SY88713V.
The SY88713V evaluation board enables fast and
thorough evaluation of the SY88713V 622Mbps PECL low-
power, limiting post-amplifier. The board is an easy-to-use,
single-layer high-speed microstrip design. It is designed to
be driven by a high-speed 622Mbps pattern generator and
provides on-board 50Ω terminations for the generator’s
outputs. The input termination network also provides the
required input bias of V
CC
–1.3V for the SY88713V.
The SY88713V evaluation board is intended to be
terminated to a 50Ω 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 SY88713V, 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. SY88713V Evaluation Board
2
SY88713V Evaluation Board
Micrel
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
V
CC
V
CC
R3
20kΩ
Trimpot
R2
50Ω
R1
50Ω
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
200Ω
R4
200Ω
R6
200Ω
3
4
5
2
/EN
/EN
SD
DIN
/DIN
VREF
SDLVL GND
SD
11
2
3
VCC
10
DOUT
9
/DOUT
8
7
6
SY88713V
V
CC
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.
Produktspezifikationen
| Marke: | Microchip |
| Kategorie: | Nicht kategorisiert |
| Modell: | SY88713V |
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