amt8412 2.5 gb/s 1310/1550nm pin-tia features ? 2.5 gb/s differential output tia ? dc-1.9 ghz bandwidth ? +3.3v operation ? -23dbm typical sensitivity ? 1250-1620nm pin photodetector ? automatic gain control (agc) ? 2dbm optical overload applications ? sonet oc-48 / sdh stm-16 to-46 4 pin ball lens package to-46 5 pin ball lens package product description the anadigics amt8412, packaged in a 4 or 5 pin to-46 lens can, is a 3.3v integrated photodetector and transimpedance amplifier (tia) used to convert a long wavelength (1250 to 1620nm) optical input signal into a differential output voltage. the amt8412 has a typical bandwidth of 1.9ghz and a dynamic range of over 25db. the 5 pin package allows separate biasing and current moni toring of the photodiode. these devices are readily designed into receivers, transceivers and transponders for sonet oc-48 and sdh stm-16 applications. agc out outq gnd vcc vpd (for the 4 pin header vpd and vcc are connected to the same pin) figure 1: functional block diagram
amt8412 rev 0.1 2 electrical characteristics table 1: absolute maximum ratings parameter min max unit supply voltage -0.5 +3.8 v optical input power - + 5 dbm storage temperature - 40 + 125 o c stresses in excess of the absolute rati ngs may cause permanent damage. functional operation is not implied under these conditions. exposure to absolute ratings for extended periods of time may adversely affect reliability. table 2: electrical specifications parameter min typ max unit wavelength 1250 - 1620 nm detector active area - 70 - um sensitivity (1) -23 - dbm overload 2 - dbm responsivity 1550nm 0.95 a/w responsivity 1310nm 0.85 a/w vpd resistance 240 270 340 small signal transimpedance gain (50 ) 1.8 3.5 5.0 k small signal transimpedance gain ( ) 3.6 7 10 k small signal 3db bandwidth 1.7 1.9 mhz output resistance 40 53 65 output voltage swing (differential 50 ) 90 220 400 mv p-p rise/fall times 20% / 80% - 200 - ps tia supply voltage 3.0 3.3 3.6 v tia supply current - 26 38 ma power consumption (3.3v) - 86 134 mw operating temper ature -40 25 +85 o c 2.5gb/s prbs 2 31 -1, 1550nm, er >12db, ber 10 -10 figure 2: pin location (4-pin) outq out vcc gnd (bottom view) figure 3: pin location (5-pin) vcc outq gnd out vpd (bottom view) table 3: pin description name description out tia output (non-inverted) vcc supply voltage (+3.3v) outq tia output (inverted) gnd ground
amt8412 rev 0.1 3 package dimensions ? 4 pin to-46
amt8412 rev 0.1 4 package dimensions ordering information part number package description amt8412t46l4 4 pin to-46 lens package amt8412t46l5 5 pin to-46 lens package anadigics, inc. 829 flynn road camarillo, california 93012, u.s.a. tel: +1 (805) 445-4500 fax: +1 (805) 445-4502 url: http://www. anadigics.com e-mail: mktg@anadigics.com important notice anadigics, inc. reserves the right to make changes to its pr oducts or discontinue any product at any time without notice. t he product specificat ions contained in advanced product information sheets and preliminary data sheets are subject to change prior to a product?s formal intr oduction. information in data sheets have been carefully checked and are assumed to be reliable; however, anadigics assumes no responsibility for inaccura cies. anadigics strongly urges customers to verify that the information they are using is current before placing orders. warning anadigics products are not intended for use in life support appliances, devices, or systems. use of an anadigics product in any su ch application without written consent is prohibited.
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