TRF3702IRHC RF Modulator Equivalent & Substitute Parts

Part Overview

The TRF3702IRHC is an RF modulator IC manufactured by Texas Instruments, designed for operation across the 1.5GHz to 2.5GHz frequency range. This component is classified as obsolete, making substitute parts necessary for new designs and ongoing production requirements. The part operates with a supply voltage of 4.5V to 5.5V and delivers an output power of -2.5dBm with a P1dB compression point of 7dBm. Equivalent and substitute parts must maintain functional compatibility within the RF modulation application space while accommodating the electrical and mechanical constraints of the target system.

Substiute Parts

TRF3702IRHC

Texas InstrumentsIn Stock: 4287TRF3702IRHC Datasheet

Current PartRFQ

TRF370333IRGER

Texas InstrumentsIn Stock: 16122TRF370333IRGER Datasheet

MFR RecommendedRFQ

ADL5590ACPZ-R7

Analog Devices Inc.In Stock: 1673ADL5590ACPZ-R7 Datasheet

MFR RecommendedRFQ

LT5568-2EUF#TRPBF

Analog Devices Inc.In Stock: 2851LT5568-2EUF#TRPBF Datasheet

MFR RecommendedRFQ

LT5568EUF#PBF

Linear TechnologyIn Stock: 1386LT5568EUF#PBF Datasheet

MFR RecommendedRFQ

MAX2150ETI+T

Analog Devices Inc./Maxim IntegratedIn Stock: 950MAX2150ETI+T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TRF3702IRHC are selected based on the following critical parameters that determine functional compatibility:

Primary Selection Criteria:

• Function: RF Modulator
• Supply Voltage Compatibility: 4.5V ~ 5.5V nominal range
• Mounting Type: Surface Mount
• RoHS Compliance: ROHS3 Compliant
• Frequency Operation: Overlap or coverage of the 1.5GHz ~ 2.5GHz band

Secondary Compatibility Factors:

• Output Power Level: -2.5dBm reference
• P1dB Compression Point: 7dBm reference
• Noise Floor Performance: -155dBm/Hz reference
• Supply Current: 170 mA reference
• Package Form Factor: QFN-based packages with exposed pad

The substitute parts listed below maintain electrical and mechanical compatibility within these defined parameters, enabling direct or near-direct replacement in RF modulation applications.

Parameter Comparison

Engineering Selection Recommendations

TRF370333IRGER (Texas Instruments) This part is the manufacturer-recommended substitute from Texas Instruments. It maintains the same supply voltage range (4.5V ~ 5.5V) and RoHS3 compliance. The extended frequency coverage (400MHz ~ 4GHz) provides broader application flexibility. The increased P1dB compression point (9.5dBm) and improved noise floor (-163dBm/Hz) represent performance enhancements. Higher supply current (235 mA) and larger package footprint (24-VFQFN) require PCB layout and power supply considerations. Active product status ensures long-term availability and support.

ADL5590ACPZ-R7 (Analog Devices Inc.) This part operates within a narrower frequency band (869MHz ~ 960MHz) and requires a tighter supply voltage range (4.75V ~ 5.25V). The significantly higher P1dB compression point (16dBm) and elevated output power (5.7dBm) suit high-power RF applications. Moisture sensitivity level 3 (168 hours) requires controlled storage conditions. The 36-VFQFN package represents a substantial footprint increase. Active product status and ROHS3 compliance are maintained.

LT5568-2EUF#TRPBF (Analog Devices Inc.) This part operates in the 700MHz ~ 1.05GHz RF frequency range with LO frequency coverage of 550MHz ~ 1.25GHz. Supply voltage compatibility (4.5V ~ 5.25V) and current draw (165 mA) closely match the original part. The improved noise floor (-160.3dBm/Hz) and unlimited moisture sensitivity level (MSL 1) provide manufacturing advantages. The 16-WQFN package maintains a similar footprint to the original. Active product status and ROHS3 compliance are confirmed.

LT5568EUF#PBF (Linear Technology) This part shares identical electrical specifications with the LT5568-2EUF#TRPBF variant, including frequency ranges, supply voltage, and noise floor performance. Bulk packaging differs from tape and reel format. The 16-WQFN package maintains compatibility with the original form factor. Active product status is confirmed. RoHS compliance documentation should be verified for this variant.

MAX2150ETI+T (Analog Devices Inc./Maxim Integrated) This part operates across 700MHz ~ 2.3GHz, providing coverage of the original 1.5GHz ~ 2.5GHz band. The supply voltage range (2.7V ~ 3.6V) differs significantly from the original, requiring separate power supply design. The substantially reduced supply current (46 mA) offers power efficiency benefits. The lower P1dB compression point (1dBm) and reduced output power (-1dBm) indicate lower power output capability. The 28-WFQFN package requires PCB layout adjustment. Active product status and ROHS3 compliance are maintained.

Frequently Asked Questions (FAQ)

Q: Can the TRF370333IRGER directly replace the TRF3702IRHC without PCB modifications?

A: The TRF370333IRGER maintains the same supply voltage range and RoHS compliance but uses a 24-VFQFN package compared to the original 16-VQFN package. PCB layout modifications are required to accommodate the larger package footprint and increased pin count. Electrical signal routing and power distribution must be re-evaluated.

Q: Which substitute part best matches the original TRF3702IRHC electrical performance?

A: The LT5568-2EUF#TRPBF provides the closest electrical match, with supply current (165 mA vs. 170 mA), supply voltage range (4.5V ~ 5.25V), and noise floor performance (-160.3dBm/Hz vs. -155dBm/Hz) most closely aligned to the original specification. The 16-WQFN package also maintains a similar footprint.

Q: What are the frequency coverage differences between substitute parts?

A: The TRF370333IRGER covers 400MHz ~ 4GHz, providing the broadest frequency range. The MAX2150ETI+T covers 700MHz ~ 2.3GHz, which includes the original 1.5GHz ~ 2.5GHz band. The LT5568 variants cover 700MHz ~ 1.05GHz, which does not fully cover the original band. The ADL5590ACPZ-R7 is limited to 869MHz ~ 960MHz. Frequency band coverage must be verified against application requirements.

Q: Are all substitute parts RoHS3 compliant?

A: The TRF370333IRGER, ADL5590ACPZ-R7, LT5568-2EUF#TRPBF, and MAX2150ETI+T are confirmed ROHS3 compliant. The LT5568EUF#PBF RoHS compliance status should be verified with the supplier.

Q: What is the impact of moisture sensitivity level differences?

A: The original TRF3702IRHC has MSL 2 (1 Year storage). The LT5568 variants offer MSL 1 (Unlimited storage), providing manufacturing flexibility. The ADL5590ACPZ-R7 has MSL 3 (168 hours), requiring controlled storage and faster assembly processing to prevent moisture absorption damage.

Q: Which substitute part offers the lowest power consumption?

A: The MAX2150ETI+T draws only 46 mA compared to the original 170 mA, representing a 73% reduction in supply current. This part requires a separate 2.7V ~ 3.6V power supply and operates at lower output power levels (-1dBm).

Q: Can the ADL5590ACPZ-R7 be used in applications requiring the full 1.5GHz ~ 2.5GHz frequency range?

A: No. The ADL5590ACPZ-R7 RF frequency range is limited to 869MHz ~ 960MHz, which does not cover the original 1.5GHz ~ 2.5GHz band. This part is suitable only for applications operating within the 869MHz ~ 960MHz frequency window.

Q: What packaging considerations apply when switching to the TRF370333IRGER?

A: The TRF370333IRGER uses a 24-VFQFN package (4x4mm) compared to the original 16-VQFN package (4x4mm). Although the footprint dimensions are similar, the increased pin count (24 vs. 16) requires PCB routing modifications and updated assembly programming for pick-and-place equipment.