Datasheet > SY88149HL_10

SY88149HL_10

更新时间： 2024-11-05 07:20:07

品牌	Logo	应用领域
麦瑞 - MICREL		/
页数	文件大小	规格书
11页	335K
描述
3.3V 1.25Gbps Burst-Mode Limiting

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SY88149HL_10 数据手册

SY88149HL

3.3V 1.25Gbps Burst-Mode Limiting

Amplifier with Ultra-Fast Signal Assert

Timing

General Description

Features

The SY88149HL is a high-sensitivity, burst-mode capable

limiting post amplifier designed for Optical Line Terminal

(OLT) receiver applications. The SY88149HL 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.

• Single 3.3V power supply

• <5ns SD assert (LOS de-assert) time

• Option to AUTORESET or Manual RESET LOS output

to HIGH and SD output to LOW

• Option to select LOS or SD output

• Up to 1.25Gbps operation

• Low-noise differential LVPECL data outputs

• 4mVpp input sensitivity

• High sensitivity LOS/SD detect

• Ultra fast LVTTL LOS/SD output

• Squelching function to disable output

The SY88149HL generates a high-gain LOS or SD LVTTL

output. A programmable LOS/SD level pin (LOS/SD_LVL

)

sets the sensitivity of the input amplitude detection. This

device also offers the option to choose between a Loss-of-

Signal (LOS) and a Signal-Detect (SD) output from the

LOS/SD pin based the LOS/SDSEL pin setting. To select

SD output, leave LOS/SDSEL pin open or connect to Vcc;

to select LOS output, tie LOS/SDSEL-to-ground. If the

input signal amplitude falls below the threshold set by

LOS/SD_LVL, LOS will assert high (or SD will de-assert low).

Once the input signal rises above the threshold set by

LOS/SD_LVL, LOS will de-assert low (or SD output will

assert high). The SY88149HL also features a JAM function

which, when active, disables the LVPECL outputs. JAM is

active LOW when SD is selected and active HIGH when

LOS is selected. The LOS/SD output should be fed back to

the JAM input to maintain output stability under an invalid

signal condition. Typically, 3dB SD hysteresis is provided

to prevent chattering.

• Programmable LOS/SD level set (LOS/SD_LVL

)

• Available in a 16-pin (3mmx 3mm) QFN package

Applications

• GE-PON/GPON/EPON OLT

• Gigabit Ethernet

• Fibre Channel

• OC-3/12/24 SONET/SDH

• High-gain line driver and line receiver

• Low-gain TIA interface

Markets

• FTTH/FTTP

• Datacom/Telecom

• Optical transceiver

The SY88149HL 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 4mVpp 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

M9999-061110-I

June 2010

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

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与SY88149HL_10相关器件

型号	品牌	获取价格	描述	数据表
SY88149HLMG	MICREL	获取价格	3.3V 1.25Gbps Burst-Mode Limiting
SY88149HLMGTR	MICREL	获取价格	3.3V 1.25Gbps Burst-Mode Limiting
SY88149ND	MICROCHIP	获取价格	The SY88149NDL is a high-sensitivity, burst-mode capable limiting post amplifier designed
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

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