LM48901RL/NOPB Equivalent & Substitute Parts

Part Overview

The LM48901RL/NOPB is a Class D audio amplifier IC manufactured by Texas Instruments, designed as a quad (4-channel) amplifier with 2.8W output power per channel at 4Ω load. The device integrates differential inputs, I2C/I2S interfaces, and comprehensive protection features including short-circuit and thermal protection with depop functionality. The LM48901RL/NOPB is classified as obsolete, making identification of equivalent substitute components necessary for ongoing design support and production continuity.

Substiute Parts

LM48901RL/NOPB

Texas InstrumentsIn Stock: 1343LM48901RL/NOPB Datasheet

Current PartRFQ

TAS2563YBGR

Texas InstrumentsIn Stock: 2803TAS2563YBGR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM48901RL/NOPB is determined by the following critical parameters:

Functional Equivalence Criteria:

• Amplifier category: Linear, Amplifiers
• Amplifier type: Class D
• Channel configuration: 4-Channel (Quad)
• Output power specification: 2.8W x 4 @ 4Ω
• Supply voltage compatibility: 2.7V ~ 5.5V range
• Interface support: I2C, I2S, differential inputs
• Protection features: Short-circuit and thermal protection

Physical & Environmental Compatibility:

• Mounting type: Surface Mount
• Package family: DSBGA (Ball Grid Array)
• Operating temperature range: -40°C ~ 85°C
• Moisture sensitivity: MSL 1 (Unlimited)

Regulatory & Compliance Alignment:

• RoHS3 compliance requirement
• REACH unaffected status
• ECCN classification: EAR99

The substitute part TAS2563YBGR meets the functional amplifier category and regulatory requirements. However, physical package dimensions differ (42-DSBGA 2.96x2.5mm vs. 36-DSBGA 3.5x3.24mm), requiring PCB layout evaluation.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The LM48901RL/NOPB is classified as obsolete. The TAS2563YBGR maintains active product status from Texas Instruments, ensuring continued availability, technical support, and manufacturing consistency for new production runs and design updates.

Regulatory Compliance: Both components satisfy ROHS3 compliance, REACH unaffected status, and EAR99 export classification requirements. MSL 1 (Unlimited) moisture sensitivity rating on both parts eliminates moisture-related handling constraints.

Physical Integration: The substitute part operates within the same DSBGA package family but with different pin counts (36 vs. 42) and physical dimensions (3.5x3.24mm vs. 2.96x2.5mm). PCB layout modifications are required, including footprint redesign and signal routing adjustments.

Supply Chain Availability: Current inventory status shows TAS2563YBGR at 2784 pieces in stock versus LM48901RL/NOPB at 1325 pieces. The active product status of TAS2563YBGR provides superior long-term supply assurance.

Frequently Asked Questions (FAQ)

Q: Can TAS2563YBGR directly replace LM48901RL/NOPB without PCB modifications?

A: No. While both are Class D quad amplifiers from Texas Instruments, the package dimensions differ (42-DSBGA 2.96x2.5mm vs. 36-DSBGA 3.5x3.24mm) and pin counts differ (42 vs. 36). PCB footprint redesign is required.

Q: What are the critical functional parameters for substitution?

A: Substitution eligibility is determined by: amplifier category (Linear, Amplifiers), type (Class D), channel configuration (4-Channel Quad), output power specification (2.8W x 4 @ 4Ω), supply voltage range (2.7V ~ 5.5V), and protection features (short-circuit and thermal protection).

Q: Are there compliance differences between the two parts?

A: No. Both components are ROHS3 compliant, REACH unaffected, classified as EAR99, and carry MSL 1 (Unlimited) ratings. Regulatory and environmental compliance are equivalent.

Q: Why is product status important for this substitution?

A: The LM48901RL/NOPB is obsolete, indicating discontinued manufacturing and limited future availability. The TAS2563YBGR is active, ensuring ongoing production support, technical documentation updates, and supply chain reliability.

Q: What design considerations apply to the package change?

A: The TAS2563YBGR uses a smaller footprint (2.96x2.5mm vs. 3.5x3.24mm) with increased pin density (42 vs. 36 pins). Signal routing, thermal management, and PCB layout density require re-evaluation during integration.

Q: Are the supply voltage specifications identical?

A: The LM48901RL/NOPB operates at 2.7V ~ 5.5V. Detailed supply voltage specifications for TAS2563YBGR are not provided in the available parameters. Verify supply voltage compatibility against the TAS2563YBGR datasheet before final selection.