FEATURESLow Cost, Wide Bandwidth, Low NoiseBandwidth: 240 MHzPulse Width Modulation: 500 psRise Time/Fall Time: 1.5 nsInput Current Noise: 3.0 pA/√Hz @ 100 MHzTotal Input RMS Noise: 26.5 nA to 100 MHzWide DynamIC RangeOptical Sensitivity: –36 dBm @ 155.52 MbpsPeak Input Current:350ADifferential OutputsLow Power: 5 V @ 25 mAWide Operating Temperature Range: –40 C to +85 CAPPLICATIONSFiber Optic Receivers: SONET/SDH, FDDI, Fibre ChannelStable Operation with High Capacitance DetectorsLow Noise PreamplifiersSingle-Ended to Differential ConversionI-to-V Converters
PRODUCT DESCRIPTIONThe AD8015 is a wide bandwidth, single supply transimpedanceamplifier optimized for use in a fiber optic receiver circuit. It is acomplete, single chip solution for converting photodiode currentinto a differential voltage output. The 240 MHz bandwidth enablesAD8015 application in FDDI receivers and SONET/SDHreceivers with data rates up to 155 Mbps. This high bandwidthsupports data rates beyond 300 Mbps. The differential outputsdrive ECL directly, or can drive a comparator/ fiber optic postamplifier.In addition to fiber optic applications, this low cost, silicon al-ternative to GaAs-based transimpedance amplifiers is ideal forsystems requiring a wide dynamic range preamplifier or single-ended to differential conversion. The IC can be used with astandard ECL power supply (–5.2 V) or a PECL (+5 V) powersupply; the common mode at the output is ECL compatible.The AD8015 is available in die form, or in an 8-pin SOICpackage