AZ88923 high-speed limiting post amplifier 1630 s. stapley dr., suite 127 ? mesa, arizona 85204 ? usa ? (480) 962-5881 ? fax (480) 890-2541 www.azmicrotek.com arizona microtek, inc. features ? up to 2.5gbps operation ? differential pecl inputs ? differential pecl outputs ? open drain ttl/cmos los output ? ttl/cmos enable input ? high-speed sige process description the AZ88923 is a limiting post amplifier usable at data rates up to 2.5gbps. it is ideal for use as a post amplifier following a transimpedance amplifier. the AZ88923 contains a programmable loss of signal de tect function to determine when the input signal has been lost. this information can be used with the /en input pin to disable the output under los conditions. the detect threshold can be set with a resistor divider between v cc and v ref . the los output is an open drain compatible with cmos and ttl. the outputs produce standard pecl 100k voltage compensated levels. block diagram d in /d in d out /d out /en los los lvl v ref package availability package part number marking notes tssop 10 AZ88923u az88 923 1,2,3 1 add r1 at end of part number for 7 inch (1k parts), r2 for 13 inch (2.5k parts) tape & reel. 2 date code format: ?y? or ?yy? fo r year followed by ?ww? for week. 3 parts marked jnb for date codes prior to 4ww (prior to 2004). 4 date code ?yww? or ? yyww? on underside of part. /en d in /d in los lvl v ref v cc d out /d out gnd 1 3 2 4 5 tssop-10 10 8 9 7 6 los pinout assignment pin description pin function d in , /d in differential inputs d out , /d out pecl outputs /en output enable los lvl los threshold los los output v ref reference voltage output v cc positive voltage gnd ground
AZ88923 november 2006 * rev - 2 www.azmicrotek.com 2 absolute maximum ratings are those values beyond which device life may be impaired. symbol parameter value unit v cc dc supply voltage (referenced to gnd) 4.5 v t a operating temperature range (in free-air) -40 to +85 c t stg storage temperature range -65 to +150 c d in , /d in input voltage 0 to v cc v /en input voltage 0 to v cc v los lvl input voltage 0 to v cc v v ref output voltage v cc -2v to v cc v d out , /d out output voltage v cc -2v to v cc v dc characteristics (v cc = 3.0v to 3.6v, r load = 50 to v cc -2v) -40 c 0 c 25 c 85 c symbol characteristic min max min max min typ max min max unit i ee power supply current 1 40 40 30 40 45 ma v oh output high voltage v cc - 1085 v cc - 880 v cc - 1025 v cc - 880 v cc - 1025 v cc - 955 v cc - 880 v cc - 1025 v cc - 880 mv v ol output low voltage v cc - 1830 v cc - 1555 v cc - 1810 v cc - 1620 v cc - 1810 v cc - 1705 v cc - 1620 v cc - 1810 v cc - 1620 mv v ih /en input high voltage 2.0 2.0 2.0 2.0 mv v il /en input low voltage 0.8 0.8 0.8 0.8 mv v ol los output low voltage 2 0.5 0.5 0.5 0.5 v v ref reference voltage v cc - 1.38 v cc - 1.26 v cc - 1.38 v cc - 1.26 v cc - 1.38 v cc - 1.26 v cc - 1.38 v cc - 1.26 v i ih /en input high current 100 100 100 100 a v cmr common mode range gnd+2 v cc gnd+2 v cc gnd+2 v cc gnd+2 v cc v 1. no output load. 2. i ol = +2ma. ac characteristics (v cc = 3.0v to 3.6v, r load = 50 to v cc -2v) -40 c 0 c 25 c 85 c symbol characteristic min max min max min typ max min max unit v id input voltage range 5 1800 5 1800 5 1800 5 1800 mv t r / t f rise/fall time 150 150 150 150 ps v od diff v id =15 mvp-p out v id =5 mvp-p 600 200 mvp-p hys los hysteresis 2 8 2 8 2 4.6 8 2 8 db t offl los release time minimum input 0.5 0.5 0.1 0.5 0.5 s t offh los release time maximum input 0.5 0.5 0.1 0.5 0.5 s t onl los assert time 0.5 0.5 0.2 0.5 0.5 s v sr los sensitivity range 5 50 5 50 5 50 5 50 mvp-p
AZ88923 november 2006 * rev - 2 www.azmicrotek.com 3 differential input configuration los lvl v ref v cc r1 r2 0.1 f f 0.1 d in /d in v ref f 0.1 50 50 los lvl circuit notes: los lvl = v cc ? 1.32v + r1 + r2 2.6k r2 x 1.32v r1 + r2 los v cc > 4.7k los output { from transimpedance amplifier
AZ88923 november 2006 * rev - 2 www.azmicrotek.com 4 package diagram tssop 10 millimeters dim min max a 1.10 a 1 0.05 0.15 a 2 0.80 0.95 a 3 0.25 b p 0.15 0.30 c 0.15 0.23 d 1 2.90 3.10 e 2 2.90 3.10 e 0.50 h e 4.80 5.00 l 0.95 l p 0.40 0.70 v 0.10 w 0.10 y 0.10 z 0.34 0.67 0 o 6 o notes: 1. dimensions d and e do not include mold protrusion. 2. maximum mold protrusion for d is 0.15mm. 3. maximum mold protrusion for e is 0.25mm.
AZ88923 november 2006 * rev - 2 www.azmicrotek.com 5 arizona microtek, inc. reserves the right to change circuitry a nd specifications at any time without prior notice. arizona mic rotek, inc. makes no warranty, representation or guarant ee regarding the suitability of its products for any particular purpose, nor does a rizona microtek, inc. assume any liability arising out of the applica tion or use of any product or ci rcuit and specifically disclaims any and all liability, including without limitation special, consequential or inci dental damages. arizona microtek, inc. does not convey a ny license rights nor the rights of others. arizona microtek, inc. products are not designed, intended or authorized for use as component s in systems intended to support or sustain life, or for any other applicati on in which the failure of the arizona microtek, inc. product co uld create a situation where personal injury or death may occur. should buye r purchase or use arizona microtek, inc. products for any such unintended or unauthorized application, buyer shall indemnify a nd hold arizona microtek, inc. a nd its officers, employees, subs idiaries, affiliates, and distributor s harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising ou t of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthori zed use, even if such claim al leges that arizona microtek, inc. was negligent regarding the design or manufacture of the part.
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