Instrukcja obsługi Microchip SY88813V

Przeczytaj poniżej 📖 instrukcję obsługi w języku polskim dla Microchip SY88813V (8 stron) w kategorii nieskategoryzowany. Ta instrukcja była pomocna dla 17 osób i została oceniona przez 7 użytkowników na średnio 4.7 gwiazdek

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M9999-072505

hbwhelp@micrel.com or (408) 955-1690

3.3V/5V 155Mbps PECL LOW POWER

LIMITING POST AMPLIFIER WITH PECL

SIGNAL DETECT

SY88813V

Rev.: BAmendment: /0

Issue Date:July 2005

TYPICAL APPLICATIONS CIRCUIT

APPLICATIONS

■155Mbps SONET/SDH

■Small form factor transceivers

■High-gain line driver and line receiver

■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) package

FEATURES DESCRIPTION

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 or +5V

power supply, over temperatures ranging from –40C 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 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.

VCC

/EN

GND GND

To

CDR

SY88813V

3kΩ

From

Transimpedance

Amp.

DOUT

/DOUT

VREF

VCC

SDLVL

DIN

/DIN

0.1µF

0.1µF

0.1µF

0.1µF

SD

50Ω

Rpd

50Ω

100Ω

Rpd Rpd

For 3.3V, Rpd = 120Ω

For 5V, Rpd

= 220Ω

Specyfikacje produktu