TAS5704PAPR Equivalent & Substitute Parts

Part Overview

The TAS5704PAPR is a Class D audio amplifier IC manufactured by Texas Instruments, configured as a dual-channel (stereo) or quad-channel (quad) amplifier. The device delivers 20.6W per channel at 8Ω load impedance and operates across a 10V to 26V supply voltage range. The TAS5704PAPR is designated as Last Time Buy, indicating end-of-life status and limited availability for future procurement. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications requiring Class D amplification with digital audio inputs and integrated protection features.

Key Parameters

Parameter	TAS5704PAPR
Manufacturer	Texas Instruments
Category	Linear, Amplifiers
Type	Class D
Output Configuration	2-Channel (Stereo) or 4-Channel (Quad)
Max Output Power	20.6W x 2 @ 8Ω
Supply Voltage Range	10V ~ 26V
Package Type	64-PowerTQFP (10x10)
Mounting Type	Surface Mount
Operating Temperature	0°C ~ 85°C
Product Status	Last Time Buy
RoHS Compliance	ROHS3 Compliant
MSL Rating	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution of the TAS5704PAPR is determined by the following critical parameters:

Amplifier Type: Both the main part and substitute must be Class D amplifiers to maintain equivalent switching efficiency and thermal characteristics.

Output Configuration: The TAS5704PAPR supports 2-channel (stereo) or 4-channel (quad) operation. Substitute parts must support at least 2-channel stereo operation to maintain functional compatibility.

Supply Voltage Range: The substitute must operate within or encompass the 10V to 26V supply range of the main part.

Package and Mounting: Surface mount packages are required. Physical footprint compatibility is determined by the specific application PCB design.

Compliance and Certifications: RoHS3 compliance and MSL rating must be maintained for manufacturing and environmental requirements.

Product Status: Active product status ensures ongoing availability and manufacturing support, addressing the Last Time Buy status of the TAS5704PAPR.

The TAS5805MPWPR is identified as a manufacturer-recommended substitute based on shared Class D architecture, Texas Instruments manufacturing, compatible supply voltage operation, and active product status.

Parameter Comparison

Parameter	TAS5704PAPR	TAS5805MPWPR
Manufacturer	Texas Instruments	Texas Instruments
Category	Linear, Amplifiers	Linear, Amplifiers
Type	Class D	Class D
Output Configuration	2-Channel (Stereo) or 4-Channel (Quad)	1-Channel (Mono) or 2-Channel (Stereo)
Max Output Power @ 8Ω	20.6W x 2	23W x 2
Supply Voltage Range	10V ~ 26V	4.5V ~ 26.4V
Mounting Type	Surface Mount	Surface Mount
Operating Temperature	0°C ~ 85°C	-25°C ~ 85°C
Package Type	64-PowerTQFP (10x10)	28-PowerTSSOP (0.173", 4.40mm Width)
Product Status	Last Time Buy	Active
RoHS Compliance	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	3 (168 Hours)	3 (168 Hours)

Engineering Selection Recommendations

For Direct Stereo Applications: The TAS5805MPWPR operates as an active product with ongoing manufacturing support, addressing supply continuity concerns associated with the TAS5704PAPR Last Time Buy status. The TAS5805MPWPR delivers 23W per channel at 8Ω in stereo configuration, exceeding the TAS5704PAPR output specification of 20.6W per channel. Both devices maintain ROHS3 compliance and identical MSL ratings, ensuring equivalent manufacturing and environmental handling requirements.

Supply Voltage Consideration: The TAS5805MPWPR operates across 4.5V to 26.4V, extending the lower voltage boundary below the TAS5704PAPR minimum of 10V. Applications operating at 10V or above remain fully compatible. Applications requiring operation below 10V cannot use the TAS5704PAPR and must evaluate alternative solutions.

Package Transition: The TAS5805MPWPR uses a 28-PowerTSSOP package versus the TAS5704PAPR 64-PowerTQFP package. PCB layout redesign is required for package migration. The reduced pin count of the TAS5805MPWPR reflects its 2-channel maximum configuration compared to the TAS5704PAPR quad-channel capability.

Quad-Channel Applications: The TAS5805MPWPR does not support quad-channel operation. Applications requiring 4-channel amplification cannot use this substitute and require alternative evaluation.

Frequently Asked Questions (FAQ)

Q: Can the TAS5805MPWPR directly replace the TAS5704PAPR without PCB modification?

A: No. The TAS5805MPWPR uses a 28-PowerTSSOP package with different pin configuration compared to the TAS5704PAPR 64-PowerTQFP package. PCB layout redesign is required.

Q: What is the primary reason for substitution?

A: The TAS5704PAPR is designated Last Time Buy, indicating end-of-life status. The TAS5805MPWPR is an active product with ongoing manufacturing support and availability.

Q: Does the TAS5805MPWPR support quad-channel operation?

A: No. The TAS5805MPWPR supports 1-channel (mono) or 2-channel (stereo) operation only. Applications requiring 4-channel amplification cannot use this substitute.

Q: Are there differences in output power between the two devices?

A: Yes. The TAS5805MPWPR delivers 23W per channel at 8Ω in stereo configuration, compared to 20.6W per channel for the TAS5704PAPR. The TAS5805MPWPR provides higher output power capability.

Q: What is the minimum supply voltage for each device?

A: The TAS5704PAPR operates from 10V minimum. The TAS5805MPWPR operates from 4.5V minimum. Both devices support the full 26V+ range.

Q: Are both devices RoHS compliant?

A: Yes. Both the TAS5704PAPR and TAS5805MPWPR are ROHS3 compliant with identical MSL ratings of 3 (168 Hours).

Q: What is the operating temperature range for each device?

A: The TAS5704PAPR operates from 0°C to 85°C. The TAS5805MPWPR operates from -25°C to 85°C, providing extended low-temperature operation capability.

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