NXP Semiconductors AFRX5G372T4

Overview

AFRX5G372T4 from NXP Semiconductors is an integrated RF front-end receiver module for TD-LTE and 5G mMIMO base station applications. It integrates a T/R switch, two-stage LNA, and support circuitry operating from a 5 V supply with 1.8 V JEDEC-compliant T/R control logic. Key confirmed specs: 3300–5000 MHz frequency range, 34.0 dB Rx gain, 1.4 dB NF (3300–4200 MHz), –2 dBm IIP3 (3300–4200 MHz), and 6.2 mm × 6.2 mm LGA package.

For engineers reviewing the AFRX5G372T4 datasheet, AFRX5G372T4 pinout, AFRX5G372T4 application, or AFRX5G372T4 equivalent, this page delivers verified electrical parameters, functional pin mapping, real-world timing behavior (e.g., <1.0 µs Rx gain settling), thermal limits (–40°C to +105°C case), and validated alternative options for 5G active antenna systems.

Technical Context

The AFRX5G372T4 implements a single-antenna-port, dual-mode architecture where T/R logic (low = Tx, high = Rx) controls internal RF switches to route signal either to external 50 Ω termination (Tx mode) or to integrated LNAs (Rx mode). In Tx mode, the LNA is placed in idle state with minimized current draw (75 mW total power).

It operates across two defined RF bands: 3300–4200 MHz (NF = 1.4 dB, IIP3 = –2 dBm) and 4400–5000 MHz (NF = 1.6 dB, IIP3 = –4 dBm), both delivering consistent 34.0 dB gain and –18 dB ANT port return loss. Reverse isolation exceeds 60 dB, ensuring robust Tx-Rx isolation in full-duplex-capable mMIMO arrays.

Key Specifications

Pinout & Package

AFRX5G372T4 uses a compact 6.2 mm × 6.2 mm LGA package compatible with QFN 6 × 6 mm footprint, enabling drop-in PCB layout reuse. The module has 21 terminals, including 15 ground pins for optimal RF grounding and thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar RF front-end receiver module applications.

Compared with QM11020 and SKY66312-31, the AFRX5G372T4 uniquely supports full 3.3–5.0 GHz FR1 coverage with consistent 34 dB gain and best-in-class 1.4 dB NF at 3.5 GHz - making it the preferred choice for multi-band 5G mMIMO radios requiring maximum uplink sensitivity and band flexibility.

Availability

AFRX5G372T4 is available at Aetrix Electronics and suitable for 5G massive MIMO base stations, TD-LTE small cells, and fixed wireless access customer premises equipment requiring stable component supply, long-term lifecycle support, and traceable sourcing for production ramp.

Supply support for AFRX5G372T4 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 infrastructure markets.

The AFRX5G372T4 belongs to NXP's AIRFAST RF power and front-end product line, engineered specifically for high-efficiency, high-linearity active antenna systems in 5G NR and TD-LTE macro and small cell base stations.

FAQ

What is the operating temperature range for the AFRX5G372T4?

The AFRX5G372T4 is rated for a case operating temperature range of –40°C to +105°C, validated across all electrical specifications including gain, NF, and IIP3. This range supports deployment in outdoor RRH enclosures and uncontrolled indoor small cell environments. Thermal derating is not required within this span, and junction temperature remains below 150°C under max power conditions. The AFRX5G372T4 maintains specification compliance across the full range without performance binning or grade differentiation.

Does the AFRX5G372T4 require external matching components?

No, the AFRX5G372T4 features fully 50 Ω matched RF ports - both ANT and Rxout - eliminating the need for external baluns, capacitors, or inductors for impedance transformation. The module's internal matching network is optimized for 3300–5000 MHz operation, and validation data confirms –18 dB return loss in both Tx and Rx modes. External termination at the Tx/TERM pin is required, but that is a simple 50 Ω resistor to ground, not a matching network.

How is the T/R control interface implemented on the AFRX5G372T4?

The AFRX5G372T4 uses a single-pin, 1.8 V JEDEC-compliant T/R logic interface (Pin 17) with an integrated 100 kΩ internal pulldown resistor. When T/R is driven high (≥1.0725 V), the device enters Rx mode; when low (≤0.6825 V), it enters Tx mode. The pulldown ensures default Rx operation at power-up, preventing unintended Tx path activation. No external pull-up or level-shifting circuitry is needed for standard 1.8 V GPIO control.

What is the power handling capability of the AFRX5G372T4 in Tx mode?

In Tx mode, the AFRX5G372T4 supports indefinite exposure to 37.0 dBm average power (20 MHz LTE, 8 dB PAR) and short-term (10 sec) exposure to 39.0 dBm average power at both 3500 MHz and 4700 MHz. Peak power handling reaches 47.0 dBm. These ratings apply to incident power at the ANT port while the device is in Tx mode - confirming robustness against coupled transmit energy in co-located mMIMO arrays. The AFRX5G372T4 does not require external circulators or isolators for typical deployment scenarios.

Is the AFRX5G372T4 pin-compatible with other modules in the AIRFAST family?

The AFRX5G372T4 is not pin-compatible with earlier AIRFAST receiver modules such as AFRX5G371 or AFRX5G373. Its 21-terminal LGA layout, including dedicated Tx/TERM (Pin 19) and internal T/R pulldown (Pin 17), is unique to this variant. While the 6.2 mm × 6.2 mm footprint aligns with standard QFN 6 × 6 mm land patterns, the pin functions and spacing differ. Migration requires PCB redesign. The AFRX5G372T4 datasheet (Rev. 0, May 2020) explicitly defines this as a standalone package configuration.