ATA7602D1

10GB/s Offset Control TIA Advanced Product Information - Rev 0 ATA7602 FEATURES · · · · · · Differential Output Topology DC Output Offset Control (external loop) Low Group Delay DC Coupled Outputs -5.2V Power Supply InGaP HBT Technology APPLICATIONS · · · SONET OC-192/STM-64 10Gb/s DWDM 10Gb/s Datacom D1 Package PRODUCT DESCRIPTION The ANADIGICS ATA7602 is a -5.2V high speed transimpedance amplifier (TIA) for 10Gb/s applications available in bare die form and manufactured using an InGaP HBT process. The device is used in conjunction with a photodetector to convert an optical signal into a differential voltage that can be AC or DC coupled to a post amplifier. The DC offset between the two outputs can be adjusted in order to maintain low dury cycle distortion for large signal operation or to provide an adjustable decision threshold for the post amplifier. Figure 1: Block Diagram ATA7602 Absolute Maximum Ratings PAR AMETER D C Power supply (VEE) Storage Temperature D C Input C urrent MIN -7.0 -65 TYP MAX 1.0 125 3.0 U N IT V o C mA Operating Conditions PAR AMETER Operati ng Voltage Range Operati ng Temperature Range Photodi ode C apaci tance (PIN + stray) Seri es Resi stance (Bondwi re + anode) Bondwi re Inductance MIN -5.50 -40 TYP -5.2 MAX -4.90 85 0.3 15 1.0 U N IT V o C pF W nH DC Characteristics PAR AMETER Supply C urrent (D C C oupled) Input D C Voltage Output D C Voltage MIN TYP 115 -3.9 -0.4 MAX 155 U N IT mA V V 2 Advanced Product Information - Revision 0 03/01 ATA7602 AC Electrical Characteristics (VEE=-5.2V+/-0.3V, CDIODE+CSTRAY=0.3PF, LBOND=0.7nH) PAR AMETER Small Si gnal D i fferenti al Transi mpedance (RL = 100 W ) Maxi mum Output Voltage Swi ng (RL = 50 W ) Input C urrent @ 80% Output Saturati on Bandwi dth (-3dB; Iinput