Application Note AN3014 Electrical Characterization of the MAAMSS0031 16 dB Gain Application Circuit Abstract Rev. V2 Functional Schematic 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. GND 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. Pin 1 RFIN GND RFOUT Electrical Specifications: TA = 25°C, Freq. = 50 - 1000 MHz, VDD = +8 Volts, Z0 = 75 Ω 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 — IDD + 8 Volts mA — 100 — 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 information contained herein without notice. • North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400 • India Tel: +91.80.4155721 • China Tel: +86.21.2407.1588 Application Note AN3014 Electrical Characterization of the MAAMSS0031 16 dB Gain Application Circuit Rev. V2 Recommended Board Layout Schematic Including Off-Chip Components C3 L3 C5 L1 C1 C4 R1 C2 L2 C6 Off-Chip Component Values Component Value Package C1 0.01 µF 0402 C2 0.01 µF 0402 C3 0.01 µF 0402 C4 0.01 µF 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 Ω 0402 * L1 supplied from EPCOS, part number B82422A1102K100. SOT-89 Plastic Package 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 information contained herein without notice. • North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400 • India Tel: +91.80.4155721 • China Tel: +86.21.2407.1588 Application Note AN3014 Electrical Characterization of the MAAMSS0031 16 dB Gain Application Circuit Rev. V2 Typical Performance Curves - TA = 25°C, Freq: 50 - 1000 MHz, VDD = +8 Volts, Z0 = 75 Ω Gain vs. Frequency to 3 GHz Gain vs. Frequency to 1 GHz 18.0 20.0 17.5 15.0 17.0 10.0 16.5 5.0 16.0 0.0 15.5 -5.0 15.0 0.0 -10.0 0.2 0.4 0.6 0.8 0.0 1.0 0.5 1.0 1.5 2.0 2.5 3.0 Frequency (GHz) Frequency (GHz) Output Return Loss vs. Frequency Input Return Loss vs. Frequency 0 0 -5 -5 -10 -10 -15 -15 -20 -20 -25 -25 0.0 0.2 0.4 0.6 0.8 1.0 0.0 0.2 0.4 0.6 0.8 1.0 Frequency (GHz) Frequency (GHz) Noise Figure vs. Frequency 5 4 3 2 1 0 0.0 0.2 0.4 0.6 0.8 1.0 Frequency (GHz) 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 information contained herein without notice. • North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400 • India Tel: +91.80.4155721 • China Tel: +86.21.2407.1588