NXP Semiconductors AFSC5G40E38-EVB

Overview

AFSC5G40E38-EVB from NXP Semiconductors is an evaluation board for the AFSC5G40E38 fully integrated Doherty power amplifier module, designed to accelerate RF front-end development for 3.7–4.0 GHz wireless infrastructure. It supports LTE TDD/FDD operation at 6.3 W average output power, delivers up to 28.5 dB gain and 39.5% PAE at 3800 MHz, and enables rapid validation of analog/digital linearization in massive MIMO and outdoor small cell base stations.

For engineers reviewing the AFSC5G40E38-EVB datasheet, AFSC5G40E38-EVB pinout, AFSC5G40E38-EVB application, or AFSC5G40E38-EVB equivalent, this board provides full access to all DC bias supplies (VDC1/VDC2/VGP1/VGP2/VGC1/VGC2/VDP1/VDP2), RF input/output ports, and thermal monitoring points - enabling accurate characterization of gain flatness (2.4 dB), ACPR (–25.7 dBc), and ruggedness under 10 dB PAR LTE signals.

Technical Context

The AFSC5G40E38-EVB implements NXP's reference circuit per datasheet Rev. 1 (June 2024), using Rogers RO4350B PCB (0.020″, ε_r = 3.67) with matched 50 Ω RF paths, ferrite bead isolation (BLM15PD300SN1), and precision gate feed resistors (2.2 kΩ). It supports dual-stage carrier/peaking LDMOS architecture with independent gate and drain biasing for thermal tracking and efficiency optimization.

All 27-pin AFSC5G40E38 module pins are accessible via edge-mount SMA connectors (RFin, RFout), test points (VDC1, VDC2, VGP1, VGP2, VGC1, VGC2, VDP1, VDP2), and ground planes. The board includes on-board current sensing and thermal pads aligned to the module's exposed backside ground, ensuring representative thermal performance during 125°C case temperature testing.

Key Specifications

Availability

AFSC5G40E38-EVB is available at Aetrix Electronics and suitable for wireless infrastructure prototyping, 5G NR field trials, and LTE-Advanced small cell development requiring stable component supply, repeatable RF validation, and production-ready reference design fidelity.

Supply support for AFSC5G40E38-EVB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, IoT, and wireless infrastructure markets, with core expertise in RF power, radar, and high-performance analog.

The AFSC5G40E38-EVB belongs to NXP's Airfast Power Amplifier Module evaluation platform family, engineered to de-risk RF front-end design for next-generation cellular base stations by delivering production-validated biasing, matching, and thermal behavior out-of-the-box.

FAQ

What is the primary function of the AFSC5G40E38-EVB?

The AFSC5G40E38-EVB is an evaluation board specifically designed to validate and characterize the AFSC5G40E38 Doherty power amplifier module. It provides full access to all bias supplies, RF I/O, and thermal interfaces per NXP's reference circuit, enabling engineers to measure gain, PAE, ACPR, and linearity under real-world LTE signal conditions without custom PCB development.

Does the AFSC5G40E38-EVB support both TDD and FDD LTE operation?

Yes, the AFSC5G40E38-EVB supports both TDD and FDD LTE operation because it hosts the AFSC5G40E38 module - which NXP explicitly qualifies for TDD and FDD LTE systems in its product data sheet Rev. 1. The board's 50 Ω matched RF paths and calibrated bias networks maintain performance across the full 3700–4000 MHz band used in both duplexing schemes.

What PCB material is used on the AFSC5G40E38-EVB and why does it matter?

The AFSC5G40E38-EVB uses Rogers RO4350B laminate (ε_r = 3.67, 0.020″ thickness), selected for stable dielectric properties up to 4 GHz. This minimizes phase shift and insertion loss variation across the 3700–4000 MHz band, ensuring accurate gain flatness (2.4 dB) and ACPR measurements - critical for validating the AFSC5G40E38 module's linearity in massive MIMO applications.

Can the AFSC5G40E38-EVB be used for digital pre-distortion (DPD) development?

Yes, the AFSC5G40E38-EVB is expressly designed for DPD development: it provides low-phase-noise RF paths, accessible VGP/VGC/VDP/VDC supplies for dynamic bias control, and supports 10 dB PAR LTE signals with verified ruggedness. Its 50 Ω matched I/O and precise thermal grounding allow clean capture of AM/PM distortion (–46° at P3dB) required for effective DPD algorithm training on the AFSC5G40E38 module.

What is the maximum operating temperature supported by the AFSC5G40E38-EVB?

The AFSC5G40E38-EVB supports operation up to 125°C case temperature, matching the AFSC5G40E38 module's specified TC rating. Its thermal pad layout, copper pour density, and RO4350B substrate enable reliable heat dissipation during extended 6.3 W average power testing - validated by NXP's >10-year MTTF lifetime data at 125°C and 30 Vdc.