Datasheet > SY88933V_08

SY88933V_08

更新时间： 2024-11-09 04:30:07

品牌	Logo	应用领域
麦瑞 - MICREL		放大器
页数	文件大小	规格书
8页	74K
描述
3.3V/5V 1.25Gbps PECL LOW-POWER LIMITING POST AMPLIFIER WITH TTL SIGNAL DETECT

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SY88933V_08 数据手册

3.3V/5V 1.25Gbps PECL LOW-POWER

LIMITING POST AMPLIFIER

SY88933V

Micrel, Inc.

WITH TTL SIGNAL DETECT

DESCRIPTION

FEATURES

■ Single 3.3V or 5V power supply

■ DC to 1.25Gbps operation

The SY88933V 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 SY88933V quantizes these signals and outputs PECL

level waveforms.

■ Low noise PECL data outputs

■ Chatter-free OC-TTL signal setect (SD) output with

internal 6.75kΩ pull-up resistor

■ TTL EN input

■ Programmable SD level set (SD

)

The SY88933V 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 1.25Gbps and as small as 5mVp-p

can be amplified to drive devices with PECL inputs.

LVL

■ Available in a tiny 10-pin MSOP (3mm) package

The SY88933V generates a TTL SD output. A

programmable signal-detect level set pin (SD ) sets

the sensitivity of the input amplitude detection. SD asserts

high if the input amplitude rises above the threshold set

LVL

APPLICATIONS

■ 1.25Gbps Ethernet

by SD

and deasserts low otherwise. EN deasserts

LVL

the true output signal without removing the input signal.

Typically, 4.6dB SD hysteresis is provided to prevent

chattering.

■ 1.55Mbps and 622Mbps SONET/SDH

■ High-gain line driver and line receiver

■ 531Mbps and 1062Mbps Fibre Channel

■ Gigabit interface converter

TYPICAL APPLICATIONS CIRCUIT

V_CC

D_IN

D_OUT

0.1µF

From

Transimpedance

Amp.

CDR

/D_IN

/D_OUT

SY88933V

SD_LVL

V_REF

50Ω

R_pd

V_CC

GND

0.1µF

100kΩ

For 3.3V, R_pd= 120Ω

For 5V, R_pd= 220Ω

Rev.: D

Amendment: /0

M9999-011508

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

Issue Date: January 2008

12 3 4 5 6 7 8

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