NXP Semiconductors AFSC5G26E38-EVB

Overview

AFSC5G26E38-EVB from NXP Semiconductors is an evaluation board for the AFSC5G26E38 Airfast Doherty power amplifier module, designed to accelerate RF front-end development for 2.5–2.7 GHz wireless infrastructure. It supports rapid characterization of gain (35.4 dB), PAE (44.9%), ACPR (–30.3 dBc), and ruggedness under 6 W average LTE signal conditions at 2600 MHz with 28 Vdc supply.

For engineers reviewing the AFSC5G26E38-EVB datasheet, AFSC5G26E38-EVB pinout, AFSC5G26E38-EVB application, or AFSC5G26E38-EVB equivalent, this board enables fast validation of bias sequencing, thermal management, linearization interface compatibility, and wideband noise resilience in massive MIMO and outdoor small cell reference designs.

Technical Context

The AFSC5G26E38-EVB implements NXP's reference circuit per datasheet Rev. 4, including 30 Ω ferrite beads (BLM15PD300SN1), 10 μF/1 μF/0.1 μF decoupling capacitors, and 2.2 kΩ gate feed resistors for quiescent current thermal tracking. It supports full DC bias control for carrier (VDC1/VDC2/VGC1/VGC2) and peaking (VDP1/VDP2/VGP1/VGP2) stages across the 2496–2690 MHz band.

Designed for functional test in production ATE environments, the board provides access to all 27 pins of the AFSC5G26E38 module-including RF input (Pin 5), RF output (Pin 17), and exposed backside ground-enabling measurement of IMD, VBW resonance (260 MHz), AM/PM distortion (–37°), and gain flatness (1.2 dB) under modulated LTE conditions.

Key Specifications

Availability

AFSC5G26E38-EVB is available at Aetrix Electronics and suitable for wireless infrastructure design, massive MIMO system integration, and outdoor small cell RF front-end validation requiring stable component supply and repeatable reference performance.

Supply support for AFSC5G26E38-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, and communications markets, with deep expertise in RF power and wireless infrastructure.

The AFSC5G26E38-EVB belongs to NXP's Airfast evaluation platform family, engineered specifically to de-risk high-efficiency Doherty amplifier deployment in 5G base stations and low-power remote radio heads.

FAQ

What is the primary purpose of the AFSC5G26E38-EVB evaluation board?

The AFSC5G26E38-EVB is a dedicated evaluation platform for the AFSC5G26E38 Doherty power amplifier module. It implements NXP's documented reference circuit-including ferrite beads, decoupling capacitors, and gate feed resistors-to enable immediate RF performance validation, bias optimization, and linearization testing without custom PCB development. Engineers use AFSC5G26E38-EVB to verify gain, PAE, ACPR, and ruggedness under realistic LTE signal conditions before integrating AFSC5G26E38 into final designs.

Does the AFSC5G26E38-EVB support both analog and digital pre-distortion (DPD) systems?

Yes, the AFSC5G26E38-EVB supports both analog and digital linearization. Its pin-accessible architecture exposes all critical bias nodes-VDC1/VDC2, VDP1/VDP2, VGC1/VGC2, and VGP1/VGP2-allowing precise control of carrier and peaking stage operating points. The board's 50 Ω matched I/O and low-noise layout meet DPD system requirements for clean feedback path acquisition and stable loop convergence when used with AFSC5G26E38 in closed-loop configurations.

What RF performance metrics are verified using the AFSC5G26E38-EVB at 2600 MHz?

Using the AFSC5G26E38-EVB, engineers verify key 2600 MHz LTE metrics for AFSC5G26E38: gain of 35.4 dB, power-added efficiency of 44.9%, adjacent channel power ratio of –30.3 dBc, ALT1 of –41.0 dBc, ALT2 of –50.3 dBc, and AM/PM distortion of –37° at P3dB. These values are measured per NXP's reference circuit with 6 W average output, 28 Vdc supply, and 8 dB PAR input signal-directly supporting compliance with 3GPP Band 7/38/41 specifications.

How does the AFSC5G26E38-EVB handle thermal management during high-power operation?

The AFSC5G26E38-EVB features an exposed backside ground pad aligned with the AFSC5G26E38 module's thermal slug, enabling direct thermal conduction to heatsinks or high-copper PCB layers. This design supports continuous operation at case temperatures up to 125°C, consistent with AFSC5G26E38's rated MTTF >10 years at 125°C and 6 W average output. Thermal vias and copper pours follow NXP's recommended layout to maintain junction temperature within safe limits during extended LTE signal testing.

Can the AFSC5G26E38-EVB be used to evaluate wideband ruggedness per Table 10 in the datasheet?

Yes, the AFSC5G26E38-EVB is configured per NXP's wideband ruggedness test setup: it supports 400 MHz instantaneous signal bandwidth (ISBW) at 32 Vdc with 6 dB input overdrive using additive white Gaussian noise (AWGN). The board's impedance-controlled routing, low-inductance grounding, and optimized decoupling allow verification that AFSC5G26E38 exhibits no device degradation under these stress conditions-critical for outdoor small cell deployments subject to spectral congestion and interference.