LM4810MA/NOPB Equivalent & Substitute Parts

Part Overview

The LM4810MA/NOPB is a Class AB stereo headphone amplifier IC manufactured by Texas Instruments, part of the Boomer® series. This device delivers 105mW per channel at 16Ohm load across a 2V to 5.5V supply range in an 8-SOIC surface mount package. The LM4810MA/NOPB is classified as obsolete product status, necessitating identification of active equivalent alternatives that maintain functional compatibility for headphone amplification applications. Substitute parts must preserve the Class AB topology, stereo output configuration, 8-SOIC package format, and core protection features (depop, shutdown, thermal protection) while operating within the specified temperature and supply voltage parameters.

Substiute Parts

LM4810MA/NOPB

Texas InstrumentsIn Stock: 943LM4810MA/NOPB Datasheet

Current PartRFQ

TPA122DR

Texas InstrumentsIn Stock: 16044TPA122DR Datasheet

MFR RecommendedRFQ

TPA6111A2DR

Texas InstrumentsIn Stock: 24243TPA6111A2DR Datasheet

MFR RecommendedRFQ

TPA122D

Texas InstrumentsIn Stock: 2089TPA122D Datasheet

MFR RecommendedRFQ

TPA6111A2D

Texas InstrumentsIn Stock: 2512TPA6111A2D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM4810MA/NOPB is determined by strict adherence to the following parameters:

Mandatory Compatibility Criteria:

• Amplifier type: Class AB
• Output configuration: Headphones, 2-Channel (Stereo)
• Package format: 8-SOIC (0.154", 3.90mm Width)
• Mounting type: Surface Mount
• Operating temperature range: -40°C ~ 85°C (TA)
• Supply voltage range: Minimum 2V, maximum 5.5V
• Protection features: Depop, Shutdown, Thermal Protection
• Manufacturer: Texas Instruments
• Regulatory compliance: ROHS3 Compliant, REACH Unaffected

Output Power Consideration: The LM4810MA/NOPB delivers 105mW per channel at 16Ohm load. Substitute parts are grouped into two categories based on output power specifications:

• Category A (Higher Output Power): TPA6111A2DR, TPA6111A2D — 150mW x 2 @ 16Ohm
• Category B (Lower Output Power): TPA122DR, TPA122D — 70mW x 2 @ 8Ohm

All substitute parts maintain active product status, ensuring ongoing manufacturer support and availability.

Parameter Comparison

Engineering Selection Recommendations

Supply Voltage Consideration: The LM4810MA/NOPB operates from 2V minimum supply voltage. All substitute parts (TPA122DR, TPA6111A2DR, TPA122D, TPA6111A2D) require minimum 2.5V supply voltage. Applications operating below 2.5V are incompatible with these substitutes.

Output Power Matching:

• TPA6111A2DR and TPA6111A2D deliver 150mW per channel at 16Ohm load, exceeding the LM4810MA/NOPB specification of 105mW. These parts are suitable for applications requiring equal or higher output power.
• TPA122DR and TPA122D deliver 70mW per channel at 8Ohm load, below the LM4810MA/NOPB specification. These parts are suitable only for applications with reduced power requirements or 8Ohm load impedance.

Packaging and Availability:

• TPA122DR and TPA6111A2DR are supplied in Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® formats respectively, suitable for automated assembly.
• TPA122D and TPA6111A2D are supplied in Tube format, suitable for manual assembly or lower-volume applications.

Regulatory Compliance: All substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the LM4810MA/NOPB regulatory profile. All parts carry EAR99 ECCN classification and 8542.33.0001 HTSUS code.

Frequently Asked Questions (FAQ)

Q: Can TPA122DR or TPA122D directly replace LM4810MA/NOPB in all applications?

A: No. The TPA122 series delivers 70mW per channel at 8Ohm load, compared to the LM4810MA/NOPB specification of 105mW at 16Ohm load. Direct substitution is limited to applications with reduced power requirements or 8Ohm load impedance. Additionally, TPA122 parts require minimum 2.5V supply voltage, whereas LM4810MA/NOPB operates from 2V.

Q: Are TPA6111A2DR and TPA6111A2D suitable replacements for the LM4810MA/NOPB?

A: Yes, for applications requiring equal or higher output power. The TPA6111A2 series delivers 150mW per channel at 16Ohm load, exceeding the LM4810MA/NOPB specification of 105mW. Both parts share identical 8-SOIC package format, operating temperature range, and protection features. The minimum supply voltage requirement of 2.5V must be verified against application specifications.

Q: What is the difference between Tape & Reel (TR), Cut Tape (CT) & Digi-Reel®, and Tube packaging?

A: Tape & Reel and Cut Tape & Digi-Reel® formats are optimized for automated pick-and-place assembly in high-volume manufacturing. Tube packaging is used for manual assembly or lower-volume applications. All three formats contain identical die and electrical specifications; packaging selection depends on assembly process requirements.

Q: Do all substitute parts include short-circuit protection?

A: Yes. All substitute parts (TPA122DR, TPA6111A2DR, TPA122D, TPA6111A2D) include short-circuit protection in addition to depop, shutdown, and thermal protection features. The LM4810MA/NOPB specification lists depop, shutdown, and thermal protection; short-circuit protection is an additional feature in substitute parts.

Q: Are there supply voltage compatibility issues when substituting the LM4810MA/NOPB?

A: Yes. The LM4810MA/NOPB operates from 2V to 5.5V supply voltage. All substitute parts require minimum 2.5V supply voltage. Applications operating at 2V to 2.4V supply voltage are incompatible with TPA122DR, TPA6111A2DR, TPA122D, and TPA6111A2D. Verify application supply voltage specifications before substitution.

Q: Can substitute parts be used interchangeably in the same PCB layout?

A: Yes. All substitute parts use identical 8-SOIC (0.154", 3.90mm Width) package format with surface mount configuration. PCB footprints and land patterns are compatible across all parts listed. Pin-level compatibility must be verified against specific application schematics.