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Home > Products > Integrated Circuits (ICs) > Linear > Audio Amplifiers

STMicroelectronics TDA7563ASM

Name: TDA7563ASM
Brand: STMicroelectronics
SKU: TDA7563ASM
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TDA7563ASM

Manufacturer:: STMicroelectronics

Category:: Audio Amplifiers

Package:: 27-Flexiwatt, Formed Leads

Datasheet:: TDA7563ASM.pdf

Description:: IC AMP AB QUAD 75W 27FLEXIWATT

Quantity:: RFQ Add To RFQ list

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Inventory:4,774

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Product details

Overview

TDA7563ASM from STMicroelectronics is a quad-channel Class SB (high-efficiency) car audio power amplifier in Flexiwatt27 SMD package, delivering up to 4 × 50 W into 4 Ω at 14.4 V with 10% THD, featuring integrated I²C diagnostics, independent front/rear soft mute/play, selectable 26 dB/12 dB gain, and full short-circuit protection per channel for automotive head unit applications.

For engineers reviewing the TDA7563ASM datasheet, TDA7563ASM pinout, TDA7563ASM application, or TDA7563ASM equivalent, key selection considerations include its 4-channel bridge-tied-load (BTL) architecture, real-time DC/AC load detection via I²C, thermal foldback with multiple warning levels, clipping detector with 2%/10% threshold selection, and compatibility with 8–18 V automotive supply rails.

Technical Context

The TDA7563ASM implements a DMOS-based quad BTL output stage using Multipower BCD technology, enabling high efficiency (up to 70% in HI-EFF mode at 4 Ω) and low distortion (0.015% THD at 1.5 W, 4 Ω). Its internal diagnostic engine performs turn-on and permanent fault detection-including short-to-GND/VS, open/shorted speaker, and line-driver faults-via subsonic current pulses and voltage threshold sampling.

It supports dual gain modes (26 dB for low-noise line-out, 12 dB for speaker drive), linear thermal shutdown with hysteresis, and independent standby/mute control per channel via dedicated pins and I²C registers. The device operates across 8–18 V supply, tolerates 50 V transient peaks, and features ESD protection on all pins.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Power	4 × 50 W max into 4 Ω @ 14.4 V, 10% THD - enables loud, clean audio in compact automotive head units without forced cooling.
THD+N	0.015% typ. @ 1.5 W, 4 Ω, HI-EFF mode - ensures high-fidelity reproduction with minimal audible distortion.
I²C Diagnostics	Real-time DC/AC load status per channel (short/open/normal) with 100 ms acquisition time - eliminates manual speaker continuity checks during production and field service.
Thermal Protection	Linear foldback with multiple warning thresholds and hysteresis - prevents thermal runaway while maintaining partial functionality during sustained high-power operation.
Supply Range	8–18 V DC operating range, 50 V peak tolerance (50 ms) - matches automotive battery + alternator ripple and cold-crank transients.
Clipping Detection	Selectable 2% or 10% THD threshold with dedicated CLIP pin - allows precise signal integrity monitoring for dynamic range optimization or DSP feedback.
Gain Options	26 dB (low-noise line-out) or 12 dB (speaker drive) via I²C register - simplifies system-level signal chain design without external attenuators.

Pinout & Package

Package: Flexiwatt27 SMD (surface-mount variant of Flexiwatt27, 27-pin, vertical lead orientation per Figure 34 in DocID14407 Rev 5).

Pin/Terminal	Circuit Role	Design Meaning
VCC	Main power supply input	Accepts 8–18 V automotive rail; decoupling required near pin for stability under dynamic load.
GND	Power ground reference	Low-impedance return path for all four channels; must be connected to chassis ground with minimal trace inductance.
IN1–IN4	Differential audio inputs	High-impedance (60–130 kΩ) inputs accepting line-level signals; CMRR ≥ 55 dB rejects supply noise.
OUT1–OUT4	BTL speaker outputs	DMOS bridge outputs capable of ±4 A peak; each drives one speaker directly without external coupling capacitors.
STBY/MUTE	Combined standby/mute control	Logic-level pin: 0–1.5 V = standby, 3.5–5 V = mute, 7–VCC = active - enables hardware or I²C-controlled power sequencing.
CLIP	Clipping indicator output	Open-drain pin asserting low when THD exceeds selected threshold (2% or 10%) - feeds microcontroller GPIO for real-time level management.
SCL/SDA	I²C bus interface	Standard-mode (≤400 kHz) bidirectional interface for configuration, diagnostics readout, and fault logging.
VS	Speaker output common reference	Internal node tied to half-supply in BTL mode; not externally accessible but critical for DC offset cancellation.

Key Features

Feature	Design Value
Class SB High Efficiency	Up to 70% efficiency at 4 Ω (HI-EFF mode), reducing heat dissipation by ~50% vs. Class AB - enables smaller heatsinks and higher channel density in space-constrained head units.
Per-Channel Fault Protection	Four independent short-circuit detectors with DC/AC load classification - isolates faulty channels without disabling entire amplifier, improving system reliability.
I²C Diagnostic Reporting	Real-time status of each speaker (open, short-to-GND/VS, normal) readable via single-byte register - enables automated factory test and dealer-level diagnostics without oscilloscope.
Linear Thermal Foldback	Gradual output power reduction starting at junction temperature >125 °C, with hysteresis to prevent oscillation - maintains audio continuity during thermal stress instead of abrupt shutdown.
DC Offset Detection	Monitors output DC voltage during play/mute; triggers fault flag if \|VOS\| > 60 mV - prevents speaker damage from bias drift or failed output stage.

Applications

Automotive Head Unit

Aftermarket Stereo System

Use Scenario: Integrated 4-channel amplifier in OEM or Tier-1 head unit with digital signal processing and touchscreen UI.

IC Role / Device Role / Timing Role: Primary audio power stage driving front/rear speakers; receives I²S or analog inputs and delivers BTL outputs with real-time diagnostics reported over I²C to MCU.

Use Value: Eliminates need for discrete protection circuitry and external thermal sensors, reducing BOM count and PCB area while enabling remote speaker health reporting.

Use Scenario: Compact 4×50 W amplifier module in plug-and-play aftermarket stereo with Bluetooth and USB audio.

IC Role / Device Role / Timing Role: Standalone audio power IC with hardware mute/stby control and software-configurable gain; interfaces directly to preamp stage and speaker harness.

Use Value: Simplifies compliance testing with built-in clipping detection and thermal warnings, accelerating time-to-certification for CE/FCC automotive emissions standards.

Commercial Vehicle Infotainment

Marine Audio System

Use Scenario: Ruggedized infotainment system in buses or trucks with wide ambient temperature range (-40 °C to +85 °C).

IC Role / Device Role / Timing Role: High-reliability power amplifier with extended voltage tolerance (50 V transient) and robust ESD protection (HBM >2 kV) for harsh electrical environments.

Use Value: Maintains fault-free operation despite alternator load dumps and long cable runs, reducing warranty claims related to speaker failure or thermal shutdown.

Use Scenario: Waterproof marine stereo with corrosion-resistant enclosure and salt-spray rated components.

IC Role / Device Role / Timing Role: Main amplifier IC with moisture-tolerant Flexiwatt27 SMD package and conformal coating-compatible layout; supports 12/24 V dual-battery systems.

Use Value: Enables direct integration into sealed enclosures without heatsink fans, meeting IPX6 water resistance requirements while sustaining 4×28 W continuous output.

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad-channel automotive amplifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TDA7561A	Lower max output (4×40 W @ 4 Ω), no I²C diagnostics, fixed 26 dB gain only	Lacks real-time speaker fault reporting and gain flexibility - suitable only for cost-sensitive, non-diagnostic systems	Select when diagnostics and programmable gain are unnecessary and thermal budget allows higher dissipation.
TDA7564	Higher output (4×60 W @ 4 Ω), same I²C diagnostics, added 3D enhancement and bass boost registers	Includes audio post-processing features not present in TDA7563ASM - adds DSP overhead but improves perceived sound quality	Choose when system-level audio enhancement (e.g., virtual surround) is required alongside diagnostics and high power.

Compared with TDA7561A, the TDA7563ASM provides essential diagnostics and dual-gain flexibility at modest cost premium; versus TDA7564, it trades advanced audio features for lower complexity and proven thermal behavior in constrained layouts.

Availability

TDA7563ASM is available at Aetrix Electronics and suitable for automotive head units, aftermarket stereo systems, commercial vehicle infotainment, and marine audio applications requiring stable component supply, long lifecycle support, and AEC-Q100-aligned reliability.

Supply support for TDA7563ASM includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, microcontroller, power, and automotive ICs with ISO/TS 16949 certified processes.

The TDA7563ASM belongs to ST's TDA7xxx automotive audio amplifier family, engineered specifically for high-efficiency, diagnostic-rich, multi-channel car radio applications where thermal management, fault resilience, and system-level integration are critical.

FAQ

What is the maximum safe operating temperature for the TDA7563ASM junction?

The absolute maximum junction temperature is 150 °C, but thermal foldback begins at approximately 125 °C to reduce output power gradually. For reliable long-term operation, maintain junction temperature below 135 °C using appropriate heatsinking and airflow. The Flexiwatt27 SMD package has R_{th j-case} = 1 °C/W, so case temperature must stay ≤125 °C under full load.

Does the TDA7563ASM require external bootstrap capacitors for its DMOS output stage?

No. The TDA7563ASM integrates internal charge pumps and bootstrap circuitry for its DMOS BTL output stage. No external bootstrap capacitors are needed - only standard VCC and GND decoupling (100 nF ceramic + 10 µF tantalum per channel) is required per the application circuit in Figure 2 of the datasheet.

Can the I²C diagnostic data be read while the amplifier is in standby mode?

Yes. I²C communication remains fully functional in standby mode (STBY/MUTE pin <1.5 V). Turn-on diagnostic results persist until overwritten by a new diagnostic cycle, allowing firmware to poll speaker status before enabling playback - critical for pre-boot safety checks in automotive systems.

How does the clipping detector's 2% vs. 10% THD threshold affect system design?

The 2% threshold enables early warning of signal saturation for dynamic range compression or automatic gain control; the 10% threshold aligns with audible distortion onset for user alerts or limiter activation. Threshold selection is controlled via I²C register IB1 bit D0 and requires no hardware change - supporting flexible tuning across product variants.

TDA7563ASM Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 27-Flexiwatt, Formed Leads

Packaging:: Tube

Product Status:: Active

Type:: Class AB

Output Type:: 4-Channel (Quad)

Max Output Power x Channels @ Load:: 75W x 4 @ 2Ohm

Voltage - Supply:: 8V ~ 18V

Features:: I2C, Mute, Short-Circuit and Thermal Protection, Standby

Mounting Type:: Surface Mount

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Supplier Device Package:: 27-Flexiwatt (SMD)

TDA7563ASM FAQ

1.How can I place an order for TDA7563ASM through Aetrix?

Please submit a Request for Quotation (RFQ) for TDA7563ASM on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for TDA7563ASM reliable?

The price and inventory of TDA7563ASM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA7563ASM is usually 5 days.

3.What payment methods are accepted for TDA7563ASM?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA7563ASM transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TDA7563ASM?

TDA7563ASM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TDA7563ASM order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for TDA7563ASM?

For technical support, including TDA7563ASM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA7563ASM requirements.

6.How does Aetrix verify that TDA7563ASM is sourced from the original manufacturer or authorized distributors?

All TDA7563ASM products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TDA7563ASM meets industry standards.

7.What is the process for return or replacement of TDA7563ASM?

All TDA7563ASM units undergo pre-shipment inspection (PSI). If there is an issue with TDA7563ASM, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The TDA7563ASM part is unused and in its original packaging.

Return procedure for TDA7563ASM:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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