SY88973V Datasheet | Micrel Semiconductor

.. Micrel, Inc. 3.3V/5V 3.2Gbps CML LOW-POWER LIMITING POST AMPLIFIER W/TTL LOS DESCRIPTION Features s Multi-rate up to 3.2Gbps operation s Wide gain-bandwidth product - 38d B differential gain - 2GHz 3d B bandwidth s Low noise 50Ω CML data outputs - 800m VPP output swing - 60ps edge rates - 5ps RMS typ. random jitter - 15ps PP typ. deterministic jitter s Chatter-free, Loss-of-Signal (LOS) output - 4.6d B electrical hysteresis - OC-TTL output with internal 4.75kΩ pull-up resistor s Programmable LOS sensitivity using single external resistor s Internal 50Ω data input termination s TTL /EN input allows feedback from LOS s Wide operating range - Single 3.3V ±10% or 5V ±10% power supply - - 40°C to +85°C industrial temperature range s Available in tiny 10-pin EPAD-MSOP and 16-pin MLF™ packages The SY88973V low-power, 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 SY88973V quantizes these signals and outputs typically 800m VPP voltage-limited waveforms. The SY88973V operates from a single +3.3V ±10% or +5V ±10% power supply, over an industrial temperature range of - 40°C to +85°C. With its wide bandwidth and high gain, signals with data rates up to 3.2Gbps and as small as 10m VPP can be amplified to drive devices with CML inputs or AC-coupled PECL inputs. The SY88973V incorporates a loss-of-signal (LOS), opencollector TTL output with internal 4.75kΩ pull-up resistor. 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. LOS can be fed back to the enable (/EN) input to maintain output stability under a loss-of-signal condition. /EN de-asserts the true output signal without...