AN3014 MA-COM | Alldatasheet
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16 dB Gain Application Circuit Rev. V2 Application Note AN3014 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. 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 — IDD + 8 Volts mA — 100 — Electrical Specifications: TA = 25°C, Freq. = 50 - 1000 MHz, VDD = +8 Volts, Z0 = 75 Ω Functional Schematic RFIN RFOUT Pin 1 GND GND RFIN RFOUT Pin 1 GND GND
16 dB Gain Application Circuit Rev. V2 Application Note AN3014 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. Schematic Including Off-Chip Components 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. Recommended Board Layout C6R1 C4 C2 C5 SOT-89 Plastic Package
16 dB Gain Application Circuit Rev. V2 Application Note AN3014 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. Gain vs. Frequency to 1 GHz Typical Performance Curves - TA = 25°C, Freq: 50 - 1000 MHz, VDD = +8 Volts, Z0 = 75 Ω Input Return Loss vs. Frequency Noise Figure vs. Frequency Frequency (GHz) -10.0 -5.0 0.0 5.0 10.0 15.0 20.0 Frequency (GHz) 15.0 15.5 16.0 16.5 17.0 17.5 18.0 Frequency (GHz) -25 -20 -15 -10 Frequency (GHz) -25 -20 -15 -10 Frequency (GHz) Gain vs. Frequency to 3 GHz Output Return Loss vs. Frequency