TRF3750IRGPR Equivalent & Substitute Parts

Part Overview

The TRF3750IRGPR is a PLL Frequency Synthesizer IC manufactured by Texas Instruments, designed for 2.4GHz clock/timing applications in a 20-VFQFN Exposed Pad surface mount package. The device is currently classified as obsolete, making identification of functionally equivalent substitute components essential for ongoing design support, production continuity, and system maintenance.

Substiute Parts

TRF3750IRGPR

Texas InstrumentsIn Stock: 688TRF3750IRGPR Datasheet

Current PartRFQ

TRF3765IRHBR

Texas InstrumentsIn Stock: 2148TRF3765IRHBR Datasheet

MFR RecommendedRFQ

ADF4113BCPZ

Analog Devices Inc.In Stock: 9846ADF4113BCPZ Datasheet

MFR RecommendedRFQ

ADF4113BCPZ-RL7

Analog Devices Inc.In Stock: 3598ADF4113BCPZ-RL7 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute components for the TRF3750IRGPR are identified based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

• Input/Output signal type: Clock input and clock output capability
• Frequency range: Maximum operating frequency must support or exceed 2.4GHz application requirements
• Supply voltage compatibility: Operating voltage range must overlap with or encompass the 3V ~ 5.5V requirement
• Operating temperature range: Must maintain -40°C ~ 85°C specification
• Surface mount packaging: All substitutes must be surface mount compatible
• RoHS3 compliance: Environmental and regulatory alignment

Substitute Parts Identified:

1. TRF3765IRHBR (Texas Instruments) – Active product with extended frequency capability (4.8GHz maximum), Integer-N/Fractional-N VCO architecture, 32-VFQFN package
2. ADF4113BCPZ (Analog Devices Inc.) – Active product, Clock/Frequency Synthesizer (RF) IC with 4GHz maximum frequency, 20-WFQFN package, CMOS/TTL input compatibility
3. ADF4113BCPZ-RL7 (Analog Devices Inc.) – Tape & Reel packaging variant of ADF4113BCPZ with identical electrical specifications

Parameter Comparison

Engineering Selection Recommendations

TRF3765IRHBR Selection Considerations:

• Manufacturer continuity: Same manufacturer as original part (Texas Instruments)
• Active product status ensures long-term availability and support
• Extended frequency capability (4.8GHz) provides operational margin above 2.4GHz requirement
• Supply voltage range (3V ~ 3.6V) is narrower than original; verify system voltage compatibility
• Larger package footprint (32-VFQFN vs. 20-VFQFN) requires PCB layout modification
• Identical operating temperature range and RoHS3 compliance

ADF4113BCPZ / ADF4113BCPZ-RL7 Selection Considerations:

• Cross-manufacturer substitution (Analog Devices Inc.) with proven RF synthesizer architecture
• Active product status with established supply chain
• Frequency capability (4GHz) exceeds 2.4GHz requirement
• Supply voltage range (2.7V ~ 5.5V) provides broader compatibility than original
• Package footprint (20-WFQFN) matches original pin count; PCB layout compatibility possible with design review
• Moisture sensitivity level (MSL 3) requires shorter handling window compared to original (MSL 2)
• CMOS/TTL input compatibility offers flexible signal interface options
• ADF4113BCPZ-RL7 is the Tape & Reel variant; select based on procurement and assembly requirements

All substitute parts maintain ROHS3 compliance and -40°C ~ 85°C operating temperature specification.

Frequently Asked Questions (FAQ)

Q: Why is the TRF3750IRGPR obsolete, and what does this mean for my design? A: Obsolete status indicates the manufacturer has discontinued production. Substitute parts must be identified to maintain production continuity, support field repairs, and ensure long-term system availability. All identified substitutes are active products with established supply chains.

Q: Can I directly replace TRF3750IRGPR with TRF3765IRHBR without design changes? A: No. While both are Texas Instruments PLL frequency synthesizers, the TRF3765IRHBR uses a larger 32-VFQFN package (5x5mm) compared to the original 20-VFQFN package (4x4mm). PCB layout modification is required. Additionally, the supply voltage range is narrower (3V ~ 3.6V vs. 3V ~ 5.5V); verify your system voltage compatibility.

Q: What are the key differences between the Analog Devices ADF4113BCPZ options? A: ADF4113BCPZ and ADF4113BCPZ-RL7 are electrically identical. The difference is packaging format: ADF4113BCPZ is supplied in Tray, while ADF4113BCPZ-RL7 is supplied in Tape & Reel (TR). Select based on your assembly process requirements and procurement preferences.

Q: Is the ADF4113BCPZ package compatible with the original TRF3750IRGPR PCB layout? A: Both use 20-pin QFN packages with similar footprints (4x4mm). However, detailed pinout comparison and design review are necessary to confirm functional compatibility. The ADF4113BCPZ uses a 20-WFQFN CSP variant; consult datasheets for exact pin assignments and signal routing requirements.

Q: What is the impact of different Moisture Sensitivity Levels (MSL)? A: The original TRF3750IRGPR has MSL 2 (1 Year shelf life), while ADF4113 variants have MSL 3 (168 Hours shelf life). MSL 3 components require more stringent moisture control during storage and handling. Ensure your supply chain and assembly processes accommodate the shorter moisture sensitivity window.

Q: Do all substitute parts meet the same environmental and regulatory requirements? A: Yes. All identified substitutes are ROHS3 compliant, REACH unaffected, and maintain the -40°C ~ 85°C operating temperature range. Verify ECCN and HTSUS classifications for your specific export or procurement requirements.

Q: What is the frequency headroom provided by substitute parts? A: The original TRF3750IRGPR operates at 2.4GHz maximum. TRF3765IRHBR supports 4.8GHz, and ADF4113 variants support 4GHz. Both substitutes provide significant frequency margin, allowing for design flexibility and potential future application expansion.