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HomeProductsIntegrated Circuits (ICs)Linear - Amplifiers - AudioTAS5782MDCA
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TAS5782MDCA - Texas Instruments

Manufacturer Part Number
TAS5782MDCA
Manufacturer
Texas Instruments
Allelco Part Number
98D-TAS5782MDCA
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
47,663 pcs available, New & Original
Parts Description
IC AMP CLASS D STER 40W 48HTSSOP
Package
48-HTSSOP
Data sheet
TAS5782MDCA.pdf

PCN Design/Specification

Design 22/Feb/2022.pdf
RoHs Status
ROHS3 Compliant
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Our certification
In stock: 47663
  • Unit Price: $4.441
  • Subtotal: $0.00

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1+ $4.441 $4.44
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

TAS5782MDCA Tech Specifications
Texas Instruments - TAS5782MDCA technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - TAS5782MDCA

Product Attribute Attribute Value
Manufacturer Texas Instruments
Voltage - Supply 4.5V ~ 26.4V
Type Class D
Supplier Device Package 48-HTSSOP
Series -
Package / Case 48-TFSOP (0.240", 6.10mm Width) Exposed Pad
Package Tube
Product Attribute Attribute Value
Output Type 2-Channel (Stereo)
Operating Temperature -25°C ~ 85°C (TA)
Mounting Type Surface Mount
Max Output Power x Channels @ Load 40W x 2 @ 4Ohm
Features Differential Inputs, Short-Circuit and Thermal Protection
Base Product Number TAS5782

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 3 (168 Hours)
REACH Status REACH Unaffected
ECCN EAR99

Frequently Asked Questions(FAQ)

How does the TAS5782MDCA handle power delivery in a stereo 4-ohm load configuration, and what design considerations should be made when operating near its maximum output?
The TAS5782MDCA delivers up to 40W per channel into a 4-ohm load, totaling 80W in stereo configuration. This level of output requires careful attention to power supply headroom, thermal management, and impedance matching. Engineers must ensure the supply voltage remains within 4.5V to 26.4V while accounting for voltage drop across internal MOSFETs and switching losses. In practical designs, operating closer to the 40W limit increases junction temperature significantly due to higher conduction and switching losses, necessitating adequate heatsinking or airflow. Additionally, layout parasitics and trace resistance can further reduce effective output capability, making PCB design critical at high power levels.
What are the key differences between the TAS5782MDCA and other Class D amplifiers in terms of input architecture and protection mechanisms?
Unlike many Class D amplifiers that use single-ended inputs, the TAS5782MDCA features differential inputs, which improve noise immunity and reduce electromagnetic interference (EMI) in noisy environments. This is particularly beneficial in automotive or industrial applications where switching transients are common. Furthermore, it integrates both short-circuit and thermal protection, providing dual-layer reliability. While many competitors offer only one form of protection, the TAS5782MDCA’s combined approach ensures graceful degradation under fault conditions without immediate shutdown, allowing continued operation until conditions normalize—critical for systems requiring uninterrupted audio playback.
Can the TAS5782MDCA be used in battery-powered applications, and how does its supply range support portable device design?
Yes, the TAS5782MDCA supports a wide supply range from 4.5V to 26.4V, making it suitable for battery-powered devices such as portable speakers or mobile audio systems. At lower voltages like 5V, it can deliver full output power, though efficiency may decrease slightly compared to higher supply rails due to increased conduction losses. For lithium-ion battery applications (typically 3.0–4.2V nominal), an efficient DC-DC boost converter would be required to reach the minimum operating voltage. However, this adds complexity and cost; thus, system architects often pair it with a pre-boost stage to maintain headroom for transient peaks while preserving battery life.
How does the operating temperature range of the TAS5782MDCA impact reliability in automotive environments?
With an operating temperature range of -25°C to 85°C, the TAS5782MDCA meets standard commercial-grade requirements but falls short of AEC-Q100 Grade 2 qualification typically needed for harsh automotive environments exceeding 85°C. In infotainment systems where ambient temperatures can reach 105°C during summer operation, additional cooling or derating may be necessary. Thermal protection circuitry helps mitigate risk, but sustained high temperatures reduce lifespan and increase failure rates over time. Designers considering automotive use should evaluate enclosure heat dissipation, airflow, and whether component derating or alternative parts with extended temperature ratings are preferable.
What are the implications of using the TAS5782MDCA in a bridged-mono configuration versus stereo mode?
Bridging the channels of the TAS5782MDCA doubles the output voltage swing across the load, effectively delivering twice the voltage into a given impedance. When bridged into a single 8-ohm speaker, the device can deliver approximately 80W, compared to 40W per channel in stereo. However, this requires precise channel matching and careful PCB layout to avoid ground bounce or crosstalk. While bridged mode increases power to a single speaker, it sacrifices channel count and complicates feedback loop stability. Most applications benefit more from stereo flexibility unless space and power demands justify mono operation with higher output.
How does the Moisture Sensitivity Level (MSL) of 3 for the TAS5782MDCA affect manufacturing handling and shelf life?
An MSL of 3 indicates that the TAS5782MDCA must be soldered within 168 hours (7 days) after opening the moisture barrier bag. Beyond this window, absorbed moisture can vaporize during reflow, causing internal delamination or popcorning. Manufacturers must track bake cycles or re-bagging procedures if components are stored longer than recommended. This requirement applies regardless of tube packaging, so production scheduling and inventory turnover become important factors. Facilities lacking humidity-controlled storage may face yield loss or field failures if not managed properly.
What role do differential inputs play in minimizing noise in the TAS5782MDCA-based audio system?
Differential inputs reject common-mode noise present on both signal lines, enhancing signal integrity in electrically noisy environments such as near motors, RF transmitters, or long interconnects. By amplifying the voltage difference while ignoring shared interference, the TAS5782MDCA maintains clean audio reproduction even with unbalanced cabling or ground loops. This is especially valuable in professional audio gear or vehicles with poor shielding. Compared to single-ended designs, it reduces susceptibility to EMI/RFI and improves dynamic range, though it requires compatible analog front-end circuitry capable of driving true-differential signals.
Is the TAS5782MDCA suitable for use in hearing aid or medical audio applications?
No, the TAS5782MDCA is not ideal for hearing aids due to its relatively high quiescent current and lack of ultra-low-power features optimized for years-long battery life. Medical audio devices also typically require stricter certification (e.g., IEC 60601) beyond basic functional safety. However, its low distortion, robust protection, and high power efficiency make it better suited for consumer or automotive audio rather than implantable or portable diagnostic equipment. System designers targeting regulated medical markets should verify biocompatibility, leakage current limits, and regulatory compliance before adoption.
How does the package type (48-HTSSOP) influence thermal performance and PCB footprint trade-offs?
The 48-pin HTSSOP package offers a balance between pin density and thermal dissipation. Its exposed thermal pad enhances heat transfer to the PCB, improving junction-to-ambient thermal resistance compared to non-exposed alternatives. However, it occupies more board area than smaller packages like VQFN, limiting integration in compact designs. The 6.10mm width allows standard pick-and-place assembly but requires careful routing around adjacent components to avoid coupling with high-current paths. While sufficient for many industrial and consumer applications, high-power continuous operation may still demand external heatsinks or thermal vias in densely populated boards.
What precautions should be taken when implementing the TAS5782MDCA in systems with inductive loads such as moving-coil speakers?
Inductive loads like voice coils generate back-EMF during turn-off transients, which can stress output stages if not managed. Although the TAS5782MDCA includes built-in protection, flyback diodes or snubber networks across the speaker terminals are recommended to clamp voltage spikes and prevent latch-up or gate oxide breakdown in internal switches. Layout symmetry and short output traces minimize parasitic inductance, reducing peak voltages further. Additionally, dead-time control within the IC prevents shoot-through currents, but external filtering may still be needed for very large or poorly damped loads to protect longevity.
How does RoHS3 compliance affect material selection and end-of-life disposal for products using the TAS5782MDCA?
RoHS3 compliance means the TAS5782MDCA adheres to Directive 2015/863, restricting four hazardous substances including phthalates above 0.1% by weight. This ensures safer handling and disposal in Europe and aligns with global electronics recycling standards. While it doesn't change electrical performance, manufacturers benefit from simplified export processes and reduced liability risks. However, RoHS3 does not cover conflict minerals reporting (which falls under Dodd-Frank) or REACH SVHC declarations—both of which remain relevant for full supply chain transparency.
Can the TAS5782MDCA operate reliably in environments with frequent power cycling or brownout conditions?
Yes, the device features undervoltage lockout (UVLO) circuitry that prevents operation below 4.5V, avoiding erratic behavior during brownouts. Upon power restoration, it resumes normal function automatically once the supply stabilizes above threshold. Frequent cycling within the valid range does not damage the IC, provided thermal limits aren’t exceeded during repeated startups. However, extremely rapid switching (<1ms intervals) might cause cumulative stress on decoupling capacitors and power traces, so bulk capacitance and low-ESR ceramics are advised to maintain stable rails during transients.
What distinguishes the TAS5782MDCA from the base product number TAS5782 in terms of packaging and availability?
The TAS5782MDCA is the specific variant with a 48-pin HTSSOP package in tube packaging, whereas the base TAS5782 may include multiple package options (e.g., QFN, TSSOP) and reel/tube formats depending on regional demand. The “M” in MDCA denotes commercial temperature grade (-25°C to 85°C), distinguishing it from industrial or automotive versions. Tube packaging suits prototyping and small-batch production but lacks tape-and-reel automation compatibility. Engineers selecting between variants must match both electrical specifications and logistics needs—especially when migrating from development to volume manufacturing.
How does the ECCN classification (EAR99) impact international sourcing or export restrictions for the TAS5782MDCA?
An ECCN of EAR99 means the TAS5782MDCA is classified as a commodity or mass-market item with no significant export controls under U.S. regulations. It can generally be exported worldwide without licensing, though local import duties or technical reviews may apply depending on destination country. This simplifies global procurement but doesn’t exempt users from verifying alignment with foreign technology transfer laws. For military, aerospace, or restricted-use projects, additional screening may still be required despite the EAR99 status.
What design steps are essential to ensure stable operation when using the TAS5782MDCA with capacitive loads?
Capacitive loads can destabilize Class D amplifiers by altering phase margin in the feedback loop. To prevent oscillation, the TAS5782MDCA includes built-in soft-start and slew-rate control, but external damping resistors (typically 0.1Ω–1Ω) in series with each output help absorb excess energy. Avoiding large electrolytic capacitors directly across outputs is critical—use only ceramic or film types with low ESR. Simulation tools should validate loop gain across all frequencies, and empirical testing with actual load profiles ensures robustness under real-world conditions.
How does the TAS5782MDCA compare to analog Class AB amplifiers in terms of efficiency and heat generation?
The TAS5782MDCA achieves typical efficiency of 85–92% due to its switching nature, significantly outperforming analog Class AB amplifiers (~50–65% efficient). This results in less wasted power as heat, reducing cooling requirements and enabling smaller form factors. For example, delivering 40W into 4Ω consumes roughly 45–50W from the supply versus ~80W in Class AB. While Class D introduces higher electromagnetic emissions and switching noise, modern designs mitigate these with proper filtering—making the TAS5782MDCA favorable for thermally constrained applications like portable docks or automotive head units.
What considerations apply when cascading multiple TAS5782MDCA devices in multi-zone audio systems?
Cascading multiple instances requires careful synchronization to avoid beat frequencies or phase misalignment between zones. The TAS5782MDCA supports master/slave configurations via I²S or PWM sync pins, ensuring coherent timing. Power distribution must account for combined quiescent current and peak demands, possibly necessitating separate regulators per stage. Heat buildup becomes cumulative, so spacing or thermal isolation may be needed. Additionally, firmware or control logic must manage mute sequencing and fault detection across channels to prevent audible pops or system-wide shutdowns during partial failures.
How does the absence of a specified THD+N value in the datasheet affect performance evaluation for high-fidelity audio applications?
While the TAS5782MDCA excels in efficiency and protection, the lack of explicit THD+N data limits objective fidelity assessment. Typical Class D amps achieve <0.1% THD+N at 1kHz, 10W into 4Ω, but actual performance depends on modulation scheme, feedback topology, and external filtering. Without published figures, engineers must rely on reference designs or third-party evaluations. For studio-grade audio, additional oversampling filters and output LC stages may be required to meet stringent distortion budgets, whereas consumer applications often tolerate higher levels. Always prototype and measure with real loads to validate suitability for target fidelity requirements.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments TAS5782MDCA

Product Attribute TAS5782MDCAR TAS5768MDCA TAS5780MDCA TAS5768MDCAR
Part Number TAS5782MDCAR TAS5768MDCA TAS5780MDCA TAS5768MDCAR
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Mounting Type - Surface Mount Through Hole Surface Mount
Voltage - Supply - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Output Type - Current - Unbuffered Voltage - Buffered -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Max Output Power x Channels @ Load - - - -
Features - - - Simultaneous Sampling
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Base Product Number - DAC34H84 MAX500 ADS62P42
Type - - - -
Series - - - -

TAS5782MDCA Datasheet PDF

Download TAS5782MDCA pdf datasheets and Texas Instruments documentation for TAS5782MDCA - Texas Instruments.

PCN Design/Specification
Design 22/Feb/2022.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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TAS5782MDCA Image

TAS5782MDCA

Texas Instruments
98D-TAS5782MDCA

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