electrical characterization of the maamss0031 16 db gain application circuit rev. v2 application note AN3014 ? north america tel: 800.366.2266 ? europe tel: +353.21.244.6400 ? india tel: +91.80.4155721 ? china tel: +86.21.2407.1588 1 visit www.macomtech.com for additional data sheets and product information. m/a-com technology solutions inc. and its affiliates reserve the right to make changes to the product(s) or inform ation contained herein without notice. abstract the maamss0031 catv amplifier is a gaas mmic which exhibits low noise and high linearity. it is ideally suited for set top boxes, home gateways, and other broadband internet based appliances. this amplifier is a monolithic single stage design in a 75 ohm input/output impedance environment. it is designed to have a reduced number of external matching components. introduction the purpose of this application note is to present the typical performance of the maamss0031 amplifier when it is operated at +8 volts and tuned to provide a small and large signal gain of 16 db . it is intended as an aid to engineers for the implementation of the maamss0031 in such a gain requirement circuit and provides even lower noise figure than that obtained using the nominal tuning. parameter test conditions units min. typ. max. gain ? db ? 16 ? gain flatness ? db ? 0.5 ? noise figure ? db ? 2.5 ? input return loss ? db ? 17 ? output return loss ? db ? 18 ? output ip3 6 mhz spacing, -10 dbm output per tone dbm ? 36 ? composite triple beat, ctb 132 channels, +23 dbmv/channel at the output. dbc ? -75 ? composite second order, cso 132 channels, +23 dbmv/channel at the output. dbc ? -66 ? p1db ? dbm ? 18 ? i dd + 8 volts ma ? 100 ? electrical specifications: t a = 25c, freq. = 50 - 1000 mhz, v dd = +8 volts, z 0 = 75 functional schematic rf in rf out pin 1 gnd gnd rf in rf out pin 1 gnd gnd
electrical characterization of the maamss0031 16 db gain application circuit rev. v2 application note AN3014 ? north america tel: 800.366.2266 ? europe tel: +353.21.244.6400 ? india tel: +91.80.4155721 ? china tel: +86.21.2407.1588 2 visit www.macomtech.com for additional data sheets and product information. m/a-com technology solutions inc. and its affiliates reserve the right to make changes to the product(s) or inform ation contained herein without notice. schematic including off-chip components off-chip component values component value package c1 0.01 f 0402 c2 0.01 f 0402 c3 0.01 f 0402 c4 0.01 f 0402 c5 0.5 pf 0402 c6 0.5 pf 0402 l1 * 1000 nh 1210 l2 8.2 nh 0402 l3 8.2 nh 0402 r1 750 ? 0402 * l1 supplied from epcos, part number b82422a1102k100. recommended board layout l1 c3 l2 c1 c6 r1 c4 c2 c5 l3 sot-89 plastic package
electrical characterization of the maamss0031 16 db gain application circuit rev. v2 application note AN3014 ? north america tel: 800.366.2266 ? europe tel: +353.21.244.6400 ? india tel: +91.80.4155721 ? china tel: +86.21.2407.1588 3 visit www.macomtech.com for additional data sheets and product information. m/a-com technology solutions inc. and its affiliates reserve the right to make changes to the product(s) or inform ation contained herein without notice. gain vs. frequency to 1 ghz typical performance curves - t a = 25c, freq: 50 - 1000 mhz, v dd = +8 volts, z 0 = 75 ? input return loss vs. frequency noise figure vs. frequency 0 1 2 3 4 5 0.0 0.2 0.4 0.6 0.8 1.0 frequency (ghz) -10.0 -5.0 0.0 5.0 10.0 15.0 20.0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 frequency (ghz) 15.0 15.5 16.0 16.5 17.0 17.5 18.0 0.00.20.40.60.81.0 frequency (ghz) -25 -20 -15 -10 -5 0 0.0 0.2 0.4 0.6 0.8 1.0 frequency (ghz) -25 -20 -15 -10 -5 0 0.0 0.2 0.4 0.6 0.8 1.0 frequency (ghz) gain vs. frequency to 3 ghz output return loss vs. frequency
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