SY88305BL Product Brief 3.3V, 3.2Gbps CML Limiting Post Amplifier with Wide Signal-Detect Range Description The device generates a Signal Detect (SD) open-collector TTL output. The SD function is optimized to detect a larger and wider input range, as shown in the characteristic curve on Page 6. 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 sets by SDLVL and de-asserts low otherwise. The SD output can be fed back to the EN input to maintain stability. Typically, 3.5dB LOS/SD hysteresis is provided to prevent chattering. All datasheets and support documentation can be found on Micrel’s web site at: www.micrel.com. ___________________________________________________________________________________________________________ The SY88305BL low-power limiting post amplifiers are 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 SY88305BL quantizes these signals and output CMLlevel waveforms. The SY88305BL operates from a single +3.3V power supply, over temperatures ranging from –40oC to +85oC. With their wide bandwidth and high gain, signals with data rates up to 3.2Gbps, and as small as 10mVPP, can be amplified to drive devices with CML/PECL inputs. Functional Block Diagram MLF is a registered trademark of Amkor Technology. [email protected] or (408) 955-1690 Micrel, Inc. TEL: +1 408.944.0800 FAX: + 1 408.474.1000 http://www.micrel.com Features Benefits Signal Detect circuit optimized to detect a wide input range Able to detect signal loss with input ranging from 20mV to 100mVpp Chatter-free Open-Collector TTL Signal-Detect (SD) Optimized for higher input signals Single 3.3V power supply with 38mA typical Icc Low power consumption 155Mbps to 3.2Gbps operation Wide range of operation Low-noise CML data outputs Drive high frequency signals Programmable SD level set (SDLVL) Ideal for multi-rate applications ® Available in a tiny 10-pin EPAD-MSOP and 16-pin MLF package Save board space and reduce costs Applications Markets • PON • FTTX • Gigabit Ethernet • Optical transceivers • 1X and 2X Fibre Channel • Datacom/Telecom • SONET/SDH: OC-3/12/24/48 – STM 1/4/8/16 • Low-gain TIA interface • High-gain line driver and line receiver • Long-reach FOM Corporate Sales Offices Location Address Telephone Fax Corporate HQ 2180 Fortune Dr. Western USA 2180 Fortune Dr. San Jose, CA 95131 USA (408) 944-0800 (408) 474-1000 San Jose, CA 95131 USA (408) 944-0800 Central USA (408) 474-1000 2425 N. Central Expressway, Suite 351 Richardson, TX 57080 USA (972) 393-2533 (408) 474-1210 Eastern USA 93 Branch St. Medford, NJ 08055 USA (609) 654-0078 (609) 654-0989 Latin America 2425 N. Central Expressway, Suite 351 Richardson, TX 57080 USA (972) 393-2533 (408) 474-1210 China Rm 601, Bldg., Int’l Chamber of Commerce Mansion, Fuhua Rd., Futian District Shenzhen, P.R. China +86-755-8302-7618 +86-755-8302-7637 Japan Queen’s Tower A 14F, 2-3-1, Minato Mirai, Nishi-Ku, Yokohama-Shi Kanagawa 220-6014, Japan +81-45-224-6616 +81-45-224-6716 Korea 8F AnnJay Tower Bldg., 718-2, Yeoksam-Dong Kangnam-Ku, Seoul 135-080 Korea 82 (2) 538-2380 82 (2) 538-2381 New Zealand Office2, CML Bldg., 2 Perry St. Masterton, New Zealand +64-6-378-9799 +64-6-378-9599 Singapore/India 300 Beach Rd., #10-07 Concourse Singapore 199555 +65-6291-1318 +65-6291-1332 Taiwan 4F, No. 43 Lane 188, Rueiguang Rd., Neihu District Taipei, Taiwan, R.O.C. +866 (2) 8751-0600 +866 (2) 8751-0746 France/Southern Europe Les Laurentides, Immeuble Ontario, 3 avenue de Quebec 91140 Villebon sur Yvette, France +33 (0) 1.6092.4190 +33 (0) 1.6092.4189 UK/EMEA 1st Floor, 3 Lockside Place, Mill Lane, Newbury, Berks United Kingdom RG14 5QS +44 (1635) 524455` +44 (1635) 524466 Sweden/Nordic Lundagatan 11 6tr SE-171 63 Solna Sweden +46 (8) 470-5950 +46 (8) 470-5950 Micrel, Inc. TEL: +1 408.944.0800 FAX: + 1 408.474.1000 http://www.micrel.com M9999-022508