VSC7902

The VSC7902 is designed as one kind of transimpedance amplifiers which provides a highly integrated solution for converting the current produced by a photodiode into a output voltage. The typical application of these devices is in a front-end receiver for a fiber optic communication channel.

VSC7902 has seven features. (1)SDH/SONET 155 Mb/s compatible. (2)Single 5V power supply. (3)Single ended output. (4)Low noise. (5)Integrated AGC. (6)Accepts a wide variety of optical detectors. (7)Industrial temperature range would be from -40°C to +85°C. Those are all the main features.

Some absolute maximum ratings of VSC7902 have been concluded into several points as follow. (1)Its power supply would be 7 volts. (2)Its storage temperature range would be from -50°C to 125°C. (3)Its input current would be 10mA. It should be noted that stresses above those listed in absolute maximum ratings may cause permanent damage to device.

Also some electrical characteristics of VSC7902 are concluded as follow. (1)Its DC transimpedance would be min 10k with test conditions of RL=. (2)Its AC transimpedance would be min 5k with test conditions of RL=50 and f=150MHz and Im=4uA. (3)Its modulation bandwidth would be min 130MHz with test conditions of RL=50 and Cin=0.8pF and Iin=4uA. (4)Its input noise current density would be typ 2pA/Hz. (5)Its maximum input current would be max 2mA. (6)Its AGC threshold current would be typ 20uA. (7)Its AGC time constant would be typ 33usec with test conditions of Cagc=470pF. (8)Its input offset voltage would be typ 1.9V with test conditions of Tj=25°C. (9)Its input voltage drift would be max -3mV/°C with test conditions of Iin=4uA. (10)Its output voltage would be typ 1.5V. (11)Its output resistance would be min 35 and typ 50 and max 65. (12)Its supply current would be typ 35mA and max 45mA. And so on. If you have any question or suggestion or want to know more information please contact us for details. Thank you!