NXP Semiconductors A5G35H110NT4

Overview

A5G35H110NT4 from NXP Semiconductors is a 15.1 W asymmetrical Doherty RF power GaN amplifier optimized for 5G massive MIMO active antenna systems in cellular base stations. It delivers 15.8 dB gain, 57.6% drain efficiency, and –31.1 dBc ACPR at 3600 MHz under 48 Vdc operation with 70 mA quiescent current on the carrier side.

For engineers reviewing the A5G35H110NT4 datasheet, A5G35H110NT4 pinout, A5G35H110NT4 application, or A5G35H110NT4 equivalent, this device supports wide instantaneous bandwidth (3300–3700 MHz), high VSWR ruggedness, low-complexity linearization, and thermal reliability up to 150°C case temperature - critical for high-density 5G macro and small-cell deployments.

Technical Context

The A5G35H110NT4 implements a dual-path GaN-on-SiC Doherty architecture with separate carrier and peaking transistors, each independently biased via dedicated gate terminals (VGSA, VGSB) and drain supplies (VDSA, VDSB). Its internally matched 50 Ω input/output enables direct integration into reference circuits without external matching networks.

It operates as a depletion-mode amplifier requiring negative gate bias sequencing: VGSA/VGSB must be set to –5 V before applying drain voltage, and gate bias must return to –5 V before draining VDD. Thermal performance is validated using infrared measurement (RθJC = 2.8 °C/W) and finite element analysis (RθCHC = 5.9 °C/W) to ensure channel temperature remains below 225°C under full load.

Key Specifications

Pinout & Package

Package: DFN 7 mm × 6.5 mm, thermally enhanced plastic package with exposed thermal pad (bottom-side solderable). Compliant with MSL Level 3 (260°C peak reflow).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar RF power amplifier applications.

Compared with A5G35H110NT1 and A5G35H110NT2, the A5G35H110NT4 offers optimal logistics alignment for high-throughput 5G base station production - its 2500-unit reel minimizes changeover frequency, reduces moisture sensitivity risk per unit, and improves traceability in large-scale BOM management.

Availability

A5G35H110NT4 is available at Aetrix Electronics and suitable for 5G massive MIMO active antenna units, macro base station transceiver modules, and outdoor small-cell deployments requiring stable component supply, extended lifecycle support, and full MSL-compliant handling.

Supply support for A5G35H110NT4 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 core expertise in RF power, secure edge processing, and automotive radar.

The A5G35H110NT4 belongs to NXP's Airfast RF Power portfolio, engineered specifically for energy-efficient, thermally robust, and spectrally clean 5G base station amplification - targeting massive MIMO, macro, and small-cell infrastructure.

FAQ

What is the recommended gate bias sequence for safe operation of the A5G35H110NT4?

The A5G35H110NT4 requires strict gate bias sequencing due to its GaN depletion-mode architecture. Before applying drain voltage, set both VGSA and VGSB to –5 V. Then ramp VDSA and VDSB to +48 Vdc, followed by adjusting VGSA to achieve 70 mA IDQA, then setting VGSB to target bias. To power down, first remove RF input, return gates to –5 V, then discharge drains to 0 V. This prevents gate overvoltage and thermal runaway. The A5G35H110NT4 datasheet specifies this sequence in Section "Correct biasing sequence for GaN depletion mode amplifiers in a Doherty Configuration".

Does the A5G35H110NT4 require external impedance matching networks?

No, the A5G35H110NT4 is internally matched to 50 Ω at both input and output across 3300–3700 MHz, eliminating the need for external matching components in standard reference designs. This is confirmed in Table 11 ("Functional tests") and Section 12.4 ("Typical performance"), which report measured performance using the NXP Doherty Reference Circuit without added matching. However, system-level board layout - especially ground plane integrity and thermal pad soldering - remains critical to maintain specified gain, efficiency, and ACPR. The A5G35H110NT4 achieves this through high terminal impedances optimized for broadband operation.

What is the maximum allowable case temperature for continuous operation of the A5G35H110NT4?

The A5G35H110NT4 supports continuous operation with a case temperature (TC) range of –55°C to +150°C, as defined in Table 4 ("Limiting values"). Its thermal resistance RθJC is 2.8 °C/W (infrared measurement), enabling reliable operation at full 15.1 W average output power when mounted on a properly designed heatsink. The maximum channel temperature is limited to 225°C (Table 4), and RθCHC (FEA) = 5.9 °C/W must be used for reliability modeling. The A5G35H110NT4's thermal performance is validated per AN1955 and supports deployment in uncooled outdoor base station enclosures.

How does the A5G35H110NT4 support digital predistortion (DPD) linearization?

The A5G35H110NT4 delivers improved linearized error vector magnitude (EVM) with next-generation DPD algorithms, as stated in Section 2 ("Features and benefits"). Its asymmetrical Doherty architecture, combined with high terminal impedances and low AM/PM distortion (–6° max across 3400–3600 MHz), reduces DPD complexity and convergence time. Measured ACPR of –31.1 dBc at 3600 MHz under W-CDMA conditions confirms strong out-of-band suppression - a key enabler for efficient DPD implementation. The A5G35H110NT4 thus lowers FPGA resource requirements and improves overall transmitter linearity in 5G baseband units.

Is the A5G35H110NT4 suitable for non-5G applications such as WiMAX or LTE-TDD?

The A5G35H110NT4 is characterized and performance-guaranteed exclusively for 3300–3700 MHz operation, aligning with 5G NR n77/n78 bands. While its 400 MHz instantaneous bandwidth may appear applicable to legacy LTE-TDD (Band 42/43) or WiMAX, NXP explicitly states in Section 1 ("General description") that "there is no guarantee of performance when this part is used in applications designed outside of these frequencies." Therefore, the A5G35H110NT4 should not be selected for non-5G systems without full system-level validation - its bias points, gain profile, and linearity are optimized for 5G OFDM waveforms and cannot be assumed compatible with other modulation schemes or frequency plans.