TRF37T05IRGET RF Modulator Equivalent & Substitute Parts

Part Overview

The TRF37T05IRGET is an active RF modulator IC manufactured by Texas Instruments, designed for direct modulation applications across the 300MHz to 4GHz frequency range. This Surface Mount device is packaged in a 24-VFQFN format with exposed pad and is currently in active production status. Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility permits frequency range or performance trade-offs within specified electrical and mechanical constraints.

Substiute Parts

TRF37T05IRGET

Texas InstrumentsIn Stock: 1547TRF37T05IRGET Datasheet

Current PartRFQ

AD8345AREZ

Analog Devices Inc.In Stock: 10110AD8345AREZ Datasheet

MFR RecommendedRFQ

LT5568EUF#PBF

Linear TechnologyIn Stock: 1386LT5568EUF#PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TRF37T05IRGET are qualified based on the following criteria:

Primary Substitution Criteria:

• Function: RF Modulator IC
• Mounting Type: Surface Mount
• Product Status: Active
• Compliance: ROHS3 Compliant, REACH Unaffected

Frequency Range Compatibility: Substitutes must operate within overlapping frequency bands. The TRF37T05IRGET operates 300MHz ~ 4GHz. Substitute parts with narrower frequency ranges are acceptable if the application frequency falls within both the main part and substitute specifications.

Electrical Performance Parameters:

• P1dB compression point
• Noise Floor performance
• Output Power capability
• Supply voltage compatibility
• Supply current requirements

Mechanical Compatibility:

• Surface Mount technology
• Pin count and package footprint considerations
• Exposed pad thermal management

The identified substitutes (AD8345AREZ and LT5568EUF#PBF) meet the functional and compliance requirements but operate within restricted frequency bands relative to the main part. Selection depends on application frequency requirements and performance trade-offs.

Parameter Comparison

Engineering Selection Recommendations

TRF37T05IRGET (Primary Part): Recommended for applications requiring the full 300MHz to 4GHz frequency range. Active product status ensures continued manufacturing support. ROHS3 compliance and MSL 2 rating provide standard handling and environmental requirements. Supply voltage range 3.15V ~ 3.6V requires dedicated power supply design.

AD8345AREZ (Substitute - Analog Devices): Applicable for applications operating within 140MHz to 1GHz frequency band. Offers lower supply current (78mA) and wider supply voltage compatibility (2.7V ~ 5.5V). Trade-offs include reduced P1dB (2.5dBm vs 13.7dBm) and lower output power (2dBm vs 7.1dBm). MSL 3 rating requires stricter moisture control during storage and handling. 16-TSSOP package requires PCB layout redesign.

LT5568EUF#PBF (Substitute - Linear Technology): Applicable for applications operating within 700MHz to 1.05GHz frequency band. Moderate supply current (165mA) and supply voltage range 4.5V ~ 5.25V. Noise floor performance (-160.3dBm/Hz) matches main part specification. P1dB (8.3dBm) and output power (-2.8dBm) represent intermediate performance levels. 16-WQFN package requires PCB layout redesign.

All three parts maintain active product status and REACH compliance. Selection must be based on application frequency requirements and performance specifications within the specified operating bands.

Frequently Asked Questions (FAQ)

Q: Can AD8345AREZ replace TRF37T05IRGET in all applications?

A: No. AD8345AREZ operates only within 140MHz to 1GHz frequency range, compared to TRF37T05IRGET's 300MHz to 4GHz range. Substitution is valid only if the application frequency falls within both specifications. Additionally, output power is significantly lower (2dBm vs 7.1dBm) and P1dB compression point is reduced (2.5dBm vs 13.7dBm).

Q: What are the package differences between these parts?

A: TRF37T05IRGET uses 24-VFQFN Exposed Pad (4x4mm). AD8345AREZ uses 16-TSSOP (0.173", 4.40mm Width) Exposed Pad. LT5568EUF#PBF uses 16-WQFN Exposed Pad (4x4mm). Different package footprints require PCB redesign and cannot be used as direct pin-compatible replacements.

Q: Are all three parts RoHS compliant?

A: TRF37T05IRGET and AD8345AREZ are explicitly ROHS3 Compliant. LT5568EUF#PBF RoHS status is not specified in available documentation.

Q: What is the impact of different supply voltage ranges?

A: TRF37T05IRGET requires 3.15V ~ 3.6V (narrow range). AD8345AREZ accepts 2.7V ~ 5.5V (wide range), offering greater power supply flexibility. LT5568EUF#PBF requires 4.5V ~ 5.25V. Supply voltage selection affects power supply design and system integration complexity.

Q: How do moisture sensitivity levels differ?

A: TRF37T05IRGET has MSL 2 (1 Year floor life). AD8345AREZ has MSL 3 (168 Hours floor life), requiring more stringent moisture control during storage and assembly. LT5568EUF#PBF MSL is not specified. Higher MSL ratings require baking procedures before reflow soldering.

Q: Can these parts be used interchangeably on the same PCB?

A: No. Different package types (24-VFQFN vs 16-TSSOP vs 16-WQFN) require different PCB footprints, trace routing, and thermal management layouts. Each substitution requires complete PCB redesign and validation.