SY88289CL Datasheet | Micrel Semiconductor

3.3V, 3.2Gbps CML Limiting Post Amplifier with High-Gain TTL Loss-of-Signal General Description Features The SY88289CL low-power, high-sensitivity, limiting - Single 3.3V power supply post amplifier is designed for use in fiber-optic receivers. - 125Mbps to 3.2Gbps operation The device connects to typical transimpedance - Low-noise CML data outputs amplifiers (TIAs). The linear signal output from TIAs can - High-gain LOS contain significant amounts of noise and may vary in - Chatter-free open-collector TTL Loss-of-Signal (LOS) amplitude over time. The SY88289CL quantizes these output with an internal 4.75kΩ pull-up resistor signals and outputs CML-level waveforms. - TTL /EN input The SY88289CL operates from a single +3.3V power supply, over temperatures ranging from - 40o C to +85o C. - Programmable LOS level set (LOSLVL) With its wide bandwidth and high gain, signals with data - Ideal for multi-rate applications rates up to 3.2Gbps and as small as 5m VPP can be - Available in a tiny (3mm x 3mm) 16-pin MLF® amplified to drive devices with CML inputs or ACpackage coupled CML/PECL inputs. The SY88289CL generates a high-gain loss-of-signal Applications (LOS) open-collector TTL output. This function has a - APON, BPON, EPON, GEPON and GPON high-gain input stage for increased LOS sensitivity. A - Gigabit Ethernet programmable loss-of-signal level-set pin (LOSLVL) sets - 1X and 2X Fibre Channel the sensitivity of the input amplitude detection. LOS .. - SONET/SDH : OC 3/12/24/48 - STM 1/4/8/16 asserts high if the input amplitude falls below the threshold sets by LOSLVL and de-asserts low otherwise. - High-gain line driver and line receiver The enable bar input (/EN) de-asserts the true output - Low-gain TIA interface signal without removing the input signal. The LOS output can be fed back to the /EN input to maintain Markets output stability under a loss-of-signal condition. - FTTP/FTTH Typically, 3.5d B LOS hysteresis is provided to prevent -...