SY88953L Datasheet | Micrel Semiconductor

Micrel, Inc. 3.3V 10.7Gbps CML LIMITING POST AMPLIFIER W/ TTL SD AND /SD DESCRIPTION Features - - - - - - Single 3.3V power supply Up to 10.7Gbps operation 800m Vp-p output swing with 30ps edge rates 28d B voltage gain with 5m Vp-p input sensitivity On chip 50Ω I/O termination Programmable signal detect (SD and /SD) with 6d B hysteresis - Chatter-free OC-TTL SD and /SD outputs with internal 5kΩ pull-up resistors can feedback to TTL enable (/EN) input - Available in a tiny (3mm × 3mm) 16-pin MLF® package or die APPLICATIONS - - - - - OC-192 SDH/SONET 10G Ethernet/Fibre Channel receivers Upto 10.7Gbps proprietary link XFP transceivers Line driver/receiver The SY88953L high-speed limiting post amplifier is designed for use in fiber-optic receivers. The device connects 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 SY88953L quantizes these signals and outputs CML level waveforms. The SY88953L operates from a single +3.3V power supply, over temperatures ranging from - 40°C to +85°C. With its wide bandwidth and high gain, signals with data rates up to 10.7Gbps and as small as 5m Vp-p can be amplified to drive devices with CML inputs. The SY88953L outputs TTL signal-detect (SD and /SD) signals. 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 set by SDLVL and deasserts low otherwise. /SD is the plementary output of SD. /SD can be fedback to the enable (/EN) input to maintain output stability under a loss of signal condition. /EN deasserts the true output signal without removing the input signal. Typically 6d B SD hysteresis is provided to prevent chattering. .. The SY88953L also includes an input threshold adjustment to correct pulsewidth distortion. TYPICAL APPLICATIONS CIRCUIT 0.1µF VTHP...