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SY88147DL

更新时间： 2024-11-05 03:12:35
品牌 Logo 应用领域
麦瑞 - MICREL 放大器
页数 文件大小 规格书
10页 306K
描述
3.3V, 1.25Gbps PECL Limiting Post Amplifier w/High Gain TTL Loss-of-Signal

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SY88147DL 数据手册

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SY88147DL  
3.3V, 1.25Gbps PECL Limiting Post  
Amplifier w/High Gain TTL Loss-of-Signal  
General Description  
Features  
The SY88147DL is a high-sensitivity limiting post  
amplifier designed for use in fiber-optic receivers. These  
devices connect 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 SY88147DL quantizes these signals and  
outputs PECL level waveforms.  
• Single 3.3V power supply  
• DC to 1.25Gbps operation  
• Low-noise PECL data outputs  
• High-gain LOS  
• Chatter-free Open-Collector TTL Loss of Signal  
(LOS) output with internal 4.75kΩ pull-up resistor  
• TTL /EN input  
• Programmable LOS level set (LOSLVL  
• Available in a tiny 10-pin MSOP  
The SY88147DL operates from a single +3.3V power  
supply, over temperatures ranging from –40oC to +85oC.  
With its wide bandwidth and high gain, signals with data  
rates up to 1.25Gbps, and as small as 5mVPP, can be  
amplified to drive devices with PECL inputs.  
)
Applications  
The SY88147DL generates a high-gain loss-of-signal  
(LOS) open-collector TTL output. The LOS function has  
a high gain input stage for increased sensitivity. 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.  
The enable bar input (/EN) de-asserts the true output  
signal without removing the input signal. The LOS  
output can be fed back to the /EN input to maintain  
output stability under a loss-of-signal condition. Typically  
3.5dB LOS hysteresis is provided to prevent chattering.  
• APON/BPON/EPON/GEPON/GPON  
• Gigabit Ethernet  
• 531Mbps and 1062Mbps Fibre Channel  
• OC-3 and OC-12/24 SONET/SDH  
• High-gain line driver and line receiver  
• Low-gain TIA interface  
Markets  
• FTTH  
• Datacom/Telecom  
• Optical transceiver  
All support documentation can be found on Micrel’s web  
site at: www.micrel.com.  
1
M9999-021207-B  
hbwhelp@micrel.com or (408) 955-1690  
February 2007  
1234567...10

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