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HomeProductsIntegrated Circuits (ICs)Specialized ICsTDA7266P13TR
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TDA7266P13TR - STMicroelectronics

Manufacturer Part Number
TDA7266P13TR
Manufacturer
STMicroelectronics
Allelco Part Number
41D-TDA7266P13TR
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
16,160 pcs available, New & Original
Parts Description
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Data sheet
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Category
Integrated Circuits (ICs) > Specialized ICs
RoHs Status
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In stock: 16160
  • Unit Price: $4.707
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $4.707 $4.71
200+ $1.879 $375.80
500+ $1.816 $908.00
1000+ $1.784 $1,784.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

TDA7266P13TR Tech Specifications
STMicroelectronics - TDA7266P13TR technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics - TDA7266P13TR

Product Attribute Attribute Value
Part Number TDA7266P13TR
Package -
Description -
Stock Condition Get 16160 pcs available quantity at Allelco
Payment PayPal / TT / Credit Card / Western Union
Allelco Certifications ESD / ISO 9001 / ISO 13485 / ISO 28000
Product Attribute Attribute Value
Manufacturer STMicroelectronics
RoHs Status -
Warranty 100% Perfect Functions
Transport port Hong Kong
Shipping by DHL / FedEx / UPS / TNT / SF Express
RFQ Email info@allelco.com

Frequently Asked Questions(FAQ)

How does the TDA7266P13TR handle thermal management under continuous 4W output per channel into an 8Ω load, and what design considerations are needed to ensure long-term reliability?
The TDA7266P13TR delivers 4W per channel into 8Ω with Class AB operation, which inherently generates heat due to quiescent current flow. While the device includes internal thermal protection, sustained full-power operation without adequate heatsinking can lead to junction temperatures exceeding safe limits. In typical applications at 25°C ambient, a small thermal pad or exposed die attach on the PowerSSO-24 package is often sufficient for moderate duty cycles, but prolonged high-output scenarios may require evaluation of airflow, copper area, or even external thermal vias. Engineers should calculate power dissipation using (Vcc² / π²R) for sinusoidal signals and verify that the maximum junction temperature (typically 150°C) is not exceeded under worst-case supply voltage and load conditions.
Can the TDA7266P13TR be used in battery-powered stereo audio systems, and how does its supply range affect efficiency and standby consumption?
Yes, the TDA7266P13TR supports a supply range from 3.5V to 12V, making it suitable for battery-operated devices such as portable speakers or Bluetooth audio modules. At 5V, for example, it can deliver approximately 3.2W per channel into 8Ω, sufficient for many consumer audio applications. However, Class AB amplifiers like this one exhibit lower efficiency compared to Class D alternatives—typically around 50–60% under full load. The standby mode reduces quiescent current significantly, minimizing idle power draw, which benefits battery life. Designers should balance audio performance against efficiency needs, especially in compact, low-voltage designs where thermal headroom is limited.
What are the key differences between the TDA7266P13TR and the TDA7266P15TR, particularly regarding supply voltage tolerance and application suitability?
Both the TDA7266P13TR and TDA7266P15TR share the same core amplifier architecture and pinout within the PowerSSO-24 package, but they differ in maximum rated supply voltage. The P13 variant supports up to 13V, while the P15 version is specified for up to 15V. This makes the P15 more suitable for higher-voltage audio chains or applications requiring greater output swing, though both must operate within their respective limits. For most portable or low-voltage systems running on 3.7V Li-ion or 5V USB, either variant performs similarly, but exceeding 13V with the P13 risks damage. Selection depends on system voltage margins and safety derating practices.
How does the mute function on the TDA7266P13TR behave during startup and shutdown, and what impact does it have on pop/noise suppression?
The TDA7266P13TR features an active mute control input that disables the output stage when pulled low, reducing output to near-zero levels. During power-up and power-down sequences, proper sequencing of the mute signal relative to the power rails is critical to prevent audible pops or clicks. A recommended practice is to assert mute high before enabling the supply voltage and de-assert it after the rails stabilize. This timing minimizes transient glitches at the speaker terminals. Without careful layout and control logic, even brief unmute events can introduce distortion, especially if the feedback network isn’t fully settled. Many reference designs include RC filtering on the mute pin to avoid accidental triggering from noise.
Is it feasible to parallel TDA7266P13TR channels for higher output current, and what challenges arise in doing so?
Directly paralleling the two internal channels of the TDA7266P13TR for increased current sharing is generally not recommended due to potential imbalance in bias currents and mismatch in gain or thermal characteristics. Even small variations between channels can cause one to dominate under load, leading to inefficient operation or overheating. Additionally, the internal crossover distortion cancellation circuitry assumes matched behavior, which may degrade when channels operate out of sync. If higher power is required, designers should consider using separate amplifier ICs with matched characteristics or switching to a single-channel Class D solution optimized for multi-amp configurations. The PowerSSO-24 footprint also limits heat dissipation when stacking multiple devices.
How does operating temperature affect the performance of the TDA7266P13TR, and what precautions apply in industrial environments?
The TDA7266P13TR is rated for an operating ambient temperature range of 0°C to 70°C. Beyond this range, performance parameters such as output power, distortion, and protection thresholds may shift. In industrial settings where ambient temperatures can approach 60°C or higher, derating becomes necessary. For instance, maximum supply voltage should be reduced slightly, and output power capability may decrease by up to 10–15% at 70°C due to thermal compression. Thermal resistance from junction to ambient (typically ~50°C/W for the PowerSSO-24) must be factored into layout decisions. Adequate copper pour, ventilation, or conformal coating compatibility should be verified to maintain reliability without compromising airflow.
What layout guidelines are essential when implementing the TDA7266P13TR to minimize electromagnetic interference and crosstalk between stereo channels?
To minimize crosstalk and EMI in the TDA7266P13TR-based design, keep analog and digital traces physically separated, especially if using a mixed-signal PCB. Route left and right channel traces symmetrically and maintain consistent impedance paths. Place decoupling capacitors as close as possible to the VCC and GND pins—recommend 10µF electrolytic plus 100nF ceramic per supply rail. Ground planes should be solid under the amplifier, and feedback resistors should be placed near the output pins to reduce loop area. Avoid routing high-current traces near sensitive inputs. The PowerSSO-24’s exposed pad must be connected to a low-impedance ground plane to act as effective shielding and heat spreading.
Can the TDA7266P13TR drive capacitive loads beyond 100nF without instability, and how might this affect audio quality in headphone applications?
The TDA7266P13TR can typically drive capacitive loads up to several hundred nanofarads without oscillation, but performance depends on feedback topology and compensation. Driving large capacitive loads (e.g., >1µF) can introduce peaking or ringing in the frequency response, potentially causing instability or audible artifacts in sensitive audio paths like headphone drivers. In headphone amplifier applications, it's advisable to insert a small series resistor (e.g., 10–100Ω) at the output to isolate the capacitor and dampen oscillations. This trade-off improves stability at the cost of slight bandwidth reduction. Always validate with prototype testing using actual headphones, as impedance varies widely across models.
How does the short-circuit protection feature in the TDA7266P13TR respond to brief output shorts, and what recovery time should designers expect?
The TDA7266P13TR includes internal short-circuit protection that limits output current to safe levels during accidental speaker wire shorts or DC faults. Upon detecting a short, the device reduces conduction and enters a protected state. Recovery occurs automatically once the fault is removed and the internal temperature has cooled sufficiently—typically within seconds under normal conditions. However, repeated shorting without cooling can trigger thermal foldback or latch-up. Designers should consider adding an external fast-acting fuse or PTC resettable fuse in series with the supply for added safety in consumer products. Recovery times vary with ambient temperature and duration of fault; conservative estimates assume full restoration within 10–30 seconds after fault clearance.
What is the typical quiescent current of the TDA7266P13TR in active versus standby mode, and how does this influence power budgeting in battery designs?
In active mode, the TDA7266P13TR draws approximately 15–20mA per channel at 12V supply, resulting in roughly 360–480mA total quiescent current. In standby mode, this drops below 1µA, enabling ultra-low power sleep states. For a 3.7V Li-ion battery-powered system, assuming 5 hours of active playback at half volume (where average current might be 100mA), and 20 hours in standby, total capacity consumed could exceed 300mAh—significant for coin-cell replacements. Engineers must factor in both modes when selecting battery size, and consider disabling unused channels or using dynamic biasing to optimize efficiency.
Are there any known limitations in using the TDA7266P13TR with PWM audio sources, and how might this affect harmonic distortion?
While the TDA7266P13TR is designed for analog audio inputs, feeding it a PWM (pulse-width modulated) signal directly can introduce excessive high-frequency content and intermodulation distortion due to its limited bandwidth and linear response. PWM sources should always be filtered through an LC or active low-pass filter before being fed into the TDA7266P13TR’s input stage. Without proper filtering, sub-audible switching artifacts and high-order harmonics may alias back into the audible band, increasing THD+N. Typical crossover frequencies above 20kHz help, but sharp roll-offs are preferred to preserve fidelity while avoiding aliasing risks.
How do the MSL and RoHS compliance status of the TDA7266P13TR affect manufacturing and handling procedures in automated assembly lines?
The TDA7266P13TR has a Moisture Sensitivity Level (MSL) of 3, indicating it can withstand up to 168 hours (one week) outside controlled storage before baking is required. This aligns with standard JEDEC guidelines and allows reasonable handling windows in most SMT factories. Its RoHS3 compliance means it meets all current environmental regulations including exemptions for lead-free soldering processes. Assembly lines should follow standard profile monitoring and bake schedules if components sit longer than 168 hours post-delivery. No special handling beyond typical ESD precautions is needed, but documentation must reflect MSL requirements for traceability and process control.
What is the recommended method for measuring THD+N of the TDA7266P13TR at 1kHz and 2W output into 8Ω, and why is test setup critical?
To measure THD+N accurately, use a clean 1kHz sine wave input with appropriate level setting to achieve 2W RMS into 8Ω (approximately 2.83V RMS at the output). Ensure the measurement system uses a low-noise preamplifier, spectrum analyzer, or audio analyzer with calibrated weighting and integration. Critical factors include: grounding the measurement fixture properly, minimizing loop areas to reject hum, using shielded cables, and allowing 15-minute warm-up for thermal stabilization. Ambient room noise and RF interference can skew results, especially at low distortion levels (<0.1%). Multiple measurements should be averaged, and output clipping avoided—even slight overdrive increases distortion nonlinearly. Real-world loads (not ideal resistors) should be simulated if driving actual speakers.
Can the TDA7266P13TR be used in automotive audio applications, and what qualifications or modifications would be required?
While the TDA7266P13TR itself is not qualified to automotive-grade standards (e.g., AEC-Q100), it can be used in non-critical infotainment zones where cost and size outweigh ruggedness needs. Automotive environments demand extended temperature ranges (-40°C to +125°C), vibration resistance, and EMI hardening—none of which are guaranteed by the commercial-grade TDA7266P13TR’s 0°C to 70°C rating. If deployed, additional filtering, mechanical damping, and conformal coating may mitigate some risks, but failure modes could include intermittent faults or early degradation. For production vehicles, STMicroelectronics offers automotive variants like the TDA7266S, which includes enhanced ESD and temp specs—designers should evaluate those instead for mass-market compliance.
How does the output impedance of the TDA7266P13TR compare to other Class AB stereo amplifiers like the LM386 or TPA3116, and what implications does this have for speaker matching?
The TDA7266P13TR has an output impedance typically below 0.1Ω in closed-loop configuration, similar to most modern op-amp-based or Class AB ICs. This is significantly lower than older designs like the single-channel LM386 (output impedance ~0.2–0.5Ω) and much lower than switching amps like the TPA3116, which can exhibit higher output impedance at certain frequencies due to LC filters. Lower output impedance ensures stable drive across varying speaker impedances, reducing risk of oscillation or poor damping factor. When driving reactive loads (e.g., small tweeters or ribbon drivers), the TDA7266P13TR’s low Zout provides better control and transient response compared to higher-Z outputs, though Class D alternatives still dominate in efficiency-critical designs.
What are the consequences of operating the TDA7266P13TR near its minimum supply voltage of 3.5V, and how does this affect headroom and distortion?
Operating near 3.5V severely limits the available headroom, reducing maximum undistorted output swing. At 3.5V supply, the theoretical peak-to-peak output is limited to about 6.8V minus saturation losses (~7–8V p-p), yielding roughly 1.8W max into 8Ω before clipping. This leaves little margin for bass transients or high-level peaks. Additionally, lower supply voltages increase the relative impact of bias current dropouts and raise distortion, particularly in the negative half-cycle. In practice, many designs derate the minimum supply to 4.0V or higher for reliable operation. Battery voltage sag under load (common in alkaline cells) can push the system below effective thresholds, causing audible distortion or muting—designers should account for end-of-life voltage drops in battery-powered implementations.

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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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STMicroelectronics

TDA7266P13TR

STMicroelectronics
41D-TDA7266P13TR

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