Microchip SY88803V Manual

Microchip Ikke kategoriseret SY88803V

Læs gratis den danske manual til Microchip SY88803V (7 sider) i kategorien Ikke kategoriseret. Denne vejledning er vurderet som hjælpsom af 15 personer og har en gennemsnitlig bedømmelse på 4.9 stjerner ud af 8 anmeldelser. Har du et spørgsmål om Microchip SY88803V, eller vil du spørge andre brugere om produktet?

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1
hbwhelp@micrel.com or (408) 955-1690
DESCRIPTION
The SY88803V features:
■Single 3.3V or 5V power supply
■Up to 155Mbps operation
■Low noise PECL data outputs
■Chatter-free TTL Loss-of-Signal (LOS) output
■TTL /EN input
■Programmable LOS level set (LOS LVL)
■Available in a tiny 10-pin MSOP (3mm ××××
×3mm)
package
The SY88803V evaluation board features:
■AC-coupled I/O with SMA connectors
■50Ω input network termination
FUNCTIONAL FEATURES
3.3V/5V 155Mbps PECL
LOW-POWER LIMITING
POST AMPLIFIER W/TTL LOS
SY88803V
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 SY88803V 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 SY88803V
quantizes these signals and outputs PECL level waveforms.
The SY88803V 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 155Mbps and as small as 5mVpp can be
amplied to drive devices with PECL inputs.
The SY88803V generates a TTL LOS output. A
programmable, loss-of-signal, level set pin (LOSLVL) sets
the sensitivity of the input amplitude detection. LOS asserts
high if the input amplitude falls below the threshold set by
LOSLVL and de-asserts low otherwise. /EN de-asserts the
true output signal without removing the input signal. Typically
4.6dB loss-of-signal hysteresis is provided to prevent
chattering.
This manual provides information on the SY88803V
evaluation board. It should be used in conjunction with the
SY88803V datasheet, which contains full specications of
the SY88803V.
The SY88803V evaluation board enables fast and
thorough evaluation of the SY88803V 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 onboard 50 terminations for the generator’sΩ
outputs. The input termination network also provides the
required input bias of VCC–1.3V for the SY88803V.
The SY88803V evaluation board is intended to be
terminated to a 50 scope and provides for simple userΩ
adjustability of the LOS threshold through the adjustment of
an on-board potentiometer. This allows the user to evaluate
various parameters of the SY88803V, 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. SY88803V Evaluation Board
2
SY88803V Evaluation Board
Micrel
hbwhelp@micrel.com or (408) 955-1690
MEASUREMENT SETUP
SMA
SMA C2
0.1 Fµ
C1
0.1 Fµ
C5
0.1 Fµ
C4
0.1 Fµ
C6
0.1 Fµ
VCC
VCC
R3
20kΩ
Trimpot
R2
50Ω
R6
5.1kΩ
R1
50Ω
SMA
SMA
C8
22 Fµ
C7
0.1 Fµ
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
R5
200Ω
R4
200Ω
3
4
5
2
/EN
/EN
LOS
DIN
/DIN
VREF
LOSLVL GND
LOS
11
2
3
VCC
10
DOUT
9
/DOUT
8
7
6
SY88803V
VCC
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: SY88803V

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