HMC690

The HMC690 is 10 Gbps transimpedance amplifier designed for SONET OC-192 / SDH STM-64, 10GbE and 10Gbps systems employing optical amplifiers. It supports data rates up to 11.3 Gbps. This amplifi er provides a differential output voltage that is proportional to an applied current at its input port. This current is typically provided by a photodiode. Operating from a single +3.3V supply, the HMC690 features low input referred noise, and is designed for driving a CDR or a typical transceiver directly.

The RSSI output can be used for monitoring average input power. HMC690 also features a DC offset control, which enables output signal level adjustment for asymmetrical signals. Additional features include an integrated 300 filter resistor for photo-diode supply voltage and an extended linear range option.