Datasheet > SY88149ND

SY88149ND

更新时间： 2024-11-06 14:52:43

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
13页	417K
描述
The SY88149NDL is a high-sensitivity, burst-mode capable limiting post amplifier designed for Opti

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SY88149ND 数据手册

SY88149NDL

1.25Gbps Burst-Mode Limiting Amplifier

with Ultra-Fast Signal Assert Timing

Features

General Description

• <5ns SD Assert (LOS Deassert) time

The SY88149NDL is

high-sensitivity, burst-mode

• Option to AUTO RESET or manual RESET LOS/SD

capable limiting post amplifier designed for Optical Line

Terminal (OLT) receiver applications. The SY88149NDL

satisfies the strict timing restrictions of the GPON

standards by providing ultra-fast Loss-of-Signal (LOS) or

Signal-Detect (SD) output. Auto Reset and Manual Reset

options are provided to control LOS/SD output timing. For

increased flexibility, this device also includes an option to

select between LOS or SD output. The device can be

connected to burst-mode capable transimpedance

amplifiers (TIAs) using AC or DC coupling.

output

• Selectable LOS/SD output option

• High-sensitivity LOS/SD signal detect

• Low-noise LVPECL data outputs

• Squelching function to maintain output stability

• Programmable LOS/SD level set (LOS/SD_LVL

)

• 5mVpp input sensitivity

• 1.25Gbps operation

The SY88149NDL generates a high-gain LOS or SD

LVTTL output. A programmable LOS/SD level set pin

(LOS/SD_LVL) sets the sensitivity of the input amplitude

detection. When LOS/SD SEL pin is left open or tied to

Vcc, JAM is active high, SD is selected and asserts high if

the input amplitude rises above the threshold sets by

LOS/SD_LVLand de-asserts low otherwise. When LOS/SD

SEL pin is set low or tied to GND, JAM is active low, LOS

is selected and asserts low if the input amplitude rises

above the threshold sets by LOS/SD_LVLand de-asserts

high otherwise. The LOS/SD output can be fed back to the

JAM input to maintain output stability under an invalid

signal conditions. Typically, 4–5 dB SD hysteresis is

provided to prevent chattering.

• Single 3.3V power supply

• Available in a 16-pin (3mm × 3mm) QFN^®package

Applications

• GE-PON/GPON OLT

• Gigabit Ethernet

• Fibre Channel

• OC-3/12/24 SONET/SDH

• High-gain line driver and line receiver

• Low-gain TIA interface

Markets

The SY88149NDL also features a selectable proprietary

Noise Discriminator that aids by filtering out input signals

that do not qualify as a 1.25Gbps GPON preamble signal

in the initial startup phase. This feature minimizes false SD

Asserts that can be triggered by random noise.

• FTTH PON

• Datacom/Telecom

• Optical transceiver

The SY88149NDL operates from a single +3.3V power

supply, over temperatures ranging from –40^oC to +85^oC.

With its wide bandwidth and high gain, signals up to

1.25Gbps and as small as 5mVpp can be amplified to

drive devices with LVPECL inputs.

All support documentation can be found on Micrel’s web

site at: www.micrel.com.

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

M9999-020712-A

February 2012

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

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与SY88149ND相关器件

型号	品牌	获取价格	描述	数据表
SY88149NDL	MICREL	获取价格	1.25Gbps Burst-Mode Limiting Amplifier
SY88149NDL_12	MICREL	获取价格	1.25Gbps Burst-Mode Limiting Amplifier
SY88149NDLMG	MICREL	获取价格	1.25Gbps Burst-Mode Limiting Amplifier
SY88149NDLMGTR	MICREL	获取价格	1.25Gbps Burst-Mode Limiting Amplifier
SY88149NDLMG-TR	MICROCHIP	获取价格	ATM/SONET/SDH SUPPORT CIRCUIT, QCC16
SY88212L	MICREL	获取价格	3.3V, 2.5Gbps Laser Diode Driver with Integrated Bias and APC
SY88212L_10	MICREL	获取价格	3.3V, 2.5Gbps Laser Diode Driver
SY88212LMG	MICREL	获取价格	3.3V, 2.5Gbps Laser Diode Driver
SY88212LMGTR	MICREL	获取价格	Display Driver, PQCC24
SY88212MGTR	MICREL	获取价格	3.3V, 2.5Gbps Laser Diode Driver

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