Texas Instruments TRF370333IRGETG4

Overview

TRF370333IRGETG4 from Texas Instruments is a 0.35–4 GHz SiGe direct quadrature modulator with 3.3-V common-mode baseband inputs, −4.0 dB voltage gain (typ.), 9.4 dBm P1dB, 24.5 dBm OIP3, and −163 dBm/Hz noise floor at 20 MHz offset - deployed in WCDMA base station transmit channels.

For engineers reviewing the TRF370333IRGETG4 datasheet, TRF370333IRGETG4 pinout, TRF370333IRGETG4 application, or TRF370333IRGETG4 equivalent, this page delivers verified RF modulator specifications, validated I/Q interface design meaning, thermal derating data, and real-world ACPR/EVM performance at 2140 MHz for cellular infrastructure design.

Technical Context

The TRF370333IRGETG4 implements a double-balanced mixer core with integrated differential-to-single-ended RF output stage and on-chip 50-Ω drive capability - eliminating external matching components. Its I/Q baseband inputs require precise 3.3-V DC common-mode bias and accept differential signals up to 350 MHz bandwidth.

It operates from a single 4.5–5.5 V supply, supports LO input power from –5 to +12 dBm, and delivers unadjusted sideband suppression of –33.8 dBc and carrier feedthrough of –35.6 dBm at 2140 MHz - with full temperature compensation across –40°C to +85°C ambient.

Key Specifications

Pinout & Package

TRF370333IRGETG4 uses a 24-pin QFN package (4 mm × 4 mm, 0.5-mm pitch, exposed thermal pad). Pin numbering follows top-view orientation with pin 1 at bottom-left corner.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quadrature modulator applications.

Compared with TRF370315IRGET, TRF370333IRGETG4 provides 1.8-V higher I/Q bias margin and better WCDMA ACPR at 2140 MHz; versus ADL5375-05ACPZ-R7, it offers superior OIP3 and integrated LO drive but narrower upper-frequency limit.

Availability

TRF370333IRGETG4 is available at Aetrix Electronics and suitable for cellular infrastructure, wireless MAN, TD-SCDMA base stations, and GSM/EDGE microcells requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for TRF370333IRGETG4 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

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies - with over 50 years of RF IC innovation and manufacturing excellence.

The TRF3703 family was designed specifically for high-performance wireless infrastructure transmitters, targeting WCDMA, LTE, and TD-SCDMA base station applications demanding ultra-low noise, high linearity, and calibrated-free operation.

FAQ

What is the maximum LO input power supported by TRF370333IRGETG4?

The TRF370333IRGETG4 supports LO input power from –5 dBm to +12 dBm (single-ended, 50-Ω source), with optimal performance at 0 dBm. Exceeding +12 dBm risks permanent damage per Absolute Maximum Ratings; operation above +10 dBm degrades OIP3 by >1.5 dB and increases LO leakage by 3–5 dB.

Does TRF370333IRGETG4 require external calibration for sideband suppression?

No. TRF370333IRGETG4 achieves –33.8 dBc unadjusted sideband suppression at 2140 MHz without calibration. Adjusted suppression improves to –79 dBc after iterative DC offset tuning of I/Q inputs - but factory-trimmed performance eliminates need for production-time calibration in most BTS designs.

Can TRF370333IRGETG4 operate at 4 GHz with full specification compliance?

Yes. TRF370333IRGETG4 maintains full specification compliance up to 4 GHz: P1dB = 9 dBm, OIP3 = 19–22 dBm, and sideband suppression = –40 dBc (unadjusted) at fLO = 4000 MHz, all measured per SLWS184J Rev J test conditions with 5-V supply and 25°C ambient.

What is the thermal pad soldering requirement for TRF370333IRGETG4?

The exposed thermal pad (pin 25) must be soldered to a minimum 120 mm² copper pour with ≥4 thermal vias (0.3-mm diameter, spaced ≤1 mm apart) connecting to inner ground planes. Inadequate thermal relief causes junction temperature rise >15°C above ambient, degrading ACPR by 2–3 dB at full output power.

How does TRF370333IRGETG4 differ from TRF370333IRGET?

TRF370333IRGETG4 is the green (lead-free, RoHS-compliant) version with matte tin finish; TRF370333IRGET uses SnPb plating. Both share identical electrical specs, pinout, and thermal behavior. G4 suffix denotes JEDEC-compliant packaging and halogen-free molding compound - required for EU/China environmental compliance.