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Home > Products > Integrated Circuits (ICs) > Audio Special Purpose

STMicroelectronics TDA7463AD

Name: TDA7463AD
Brand: STMicroelectronics
SKU: TDA7463AD
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TDA7463AD

Manufacturer:: STMicroelectronics

Category:: Audio Special Purpose

Package:: 20-SSOP (0.209", 5.30mm Width)

Datasheet:: TDA7463AD.pdf

Description:: IC AUDIO TONE PROCESSOR 20SSOP

Quantity:: RFQ Add To RFQ list

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Inventory:3,804

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Product details

Overview

TDA7463AD from STMicroelectronics is a digitally controlled audio processor IC for low-voltage portable systems, implementing volume, bass, and treble tone control with I²C serial bus programming. It features 2 stereo inputs, 1 stereo output, ±14 dB bass boost, +8 dB treble boost, 1 dB step volume control (−63 to 0 dB), mute (100 dB attenuation), stand-by mode, and programmable bass automatic level control (ALC) via dedicated pin. Used in battery-powered audio devices requiring precise analog signal conditioning.

For engineers reviewing the TDA7463AD datasheet, TDA7463AD pinout, TDA7463AD application, or TDA7463AD equivalent, key selection criteria include its 20-pin SSOP package, I²C interface compatibility, −10 dB to +14 dB output gain range, 0.2 Vrms input clipping level, and ALC threshold configurability across four voltage levels (0.07–0.2 Vrms).

Technical Context

The TDA7463AD integrates bipolar/CMOS technology to achieve low distortion (0.1% THD), low noise (5–8 µV output noise), and DC stepping suppression. Its analog signal path uses resistor networks and op-amps for tone shaping, while all digital functions-including volume, bass, treble, mute, and stand-by-are controlled via I²C bus with 7-bit slave address (0x88 hex).

Bass ALC operates independently using an external pin to select attack/release time constants and input threshold (four selectable levels). Treble and bass center frequencies are set externally via passive components, enabling system-level tuning without firmware changes.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	1.8–3.0 V - supports single-cell Li-ion or dual-cell alkaline operation
Volume Control Range	−63 dB to 0 dB in 1 dB steps - enables precise loudness matching across playback sources
Bass Boost Range	0 to +14 dB - adjustable via register bits and external RC network for tailored low-frequency response
Treble Boost Range	0 to +8 dB - configurable per channel with external capacitor for high-frequency emphasis
Mute Attenuation	100 dB - ensures complete audio silence during standby or transient events
THD @ 1 kHz	0.1% at 0.1 Vrms - maintains fidelity in portable headphone and speaker amplifier front-ends
Signal-to-Noise Ratio	80 dB - meets consumer audio requirements for background noise suppression

Pinout & Package

The TDA7463AD is housed in a 20-pin SSOP (Shrink Small Outline Package) with 0.65 mm pitch, 7.2 mm × 7.8 mm body size, and exposed thermal pad-compatible footprint per JEDEC MO-150-AE.

Pin/Terminal	Circuit Role	Design Meaning
1, 3, 4, 5, 6, 11, 12, 14, 15, 16, 17, 18, 19, 20	Analog Input/Output or Power/Ground	IN1-L/R, IN2-L/R, OUT-L/R, TREBLE-L/R, BASSI-L/R, BASSO-L/R, VS, GND, CREF, ALC pins - define full stereo signal routing and biasing
2, 7	I²C Interface	SCL (clock) and SDA (data) - enable bidirectional configuration and status reporting with standard I²C timing
8, 9, 10, 13	No-Connect / Reserved	N.C. pins - must be left unconnected per datasheet; no internal connection or function

Key Features

Feature	Design Value
Digitally programmable tone control	Independent bass (+14 dB max) and treble (+8 dB max) adjustment via I²C registers, eliminating mechanical pots
Programmable Bass ALC	Four selectable input thresholds (0.07–0.2 Vrms) and four release current settings (0.05–0.4 A) via ALC pin
Low-voltage operation	Functional down to 1.8 V supply - enables direct integration with modern PMICs in space-constrained portable designs
DC-free output stage	Capacitor-coupled outputs with 0.8 V DC offset - prevents pop/click during power-up and avoids coupling issues with downstream amplifiers
High channel separation	80 dB at 1 kHz - preserves stereo imaging integrity in compact PCB layouts with shared ground planes

Applications

Portable Media Player Audio Front-End

Bluetooth Speaker Tone Processor

Use Scenario: Battery-powered MP3 player with dual stereo inputs (line-in and DAC output) feeding a Class D amplifier.

IC Role / Device Role / Timing Role: Audio processor handling volume, bass/treble EQ, mute, and ALC before power amplification.

Use Value: Enables consistent perceived loudness across varying file bitrates and source impedances via ALC, while preserving dynamic range with 80 dB SNR.

Use Scenario: Compact Bluetooth speaker with integrated DSP and analog audio path for legacy AUX input.

IC Role / Device Role / Timing Role: Analog tone-shaping block compensating for small-driver frequency limitations using programmable bass boost and treble lift.

Use Value: Delivers +14 dB bass enhancement at 100 Hz without distortion (0.1% THD), improving low-end impact in sub-2″ enclosures.

USB-C Audio Adapter

Smart Home Soundbar Pre-Processor

Use Scenario: USB-C to 3.5 mm adapter with embedded DAC and analog post-processing for mobile phones.

IC Role / Device Role / Timing Role: Final analog conditioning stage applying user-selectable EQ and volume scaling prior to headphone output.

Use Value: Provides 1 dB volume resolution and 100 dB mute isolation - critical for zero-click noise in on-the-go listening.

Use Scenario: Multi-source soundbar accepting optical, HDMI ARC, and analog inputs with unified tone control.

IC Role / Device Role / Timing Role: Centralized analog signal conditioner managing input switching, level normalization, and room-tuned EQ.

Use Value: Supports dual-input selection (IN1/IN2) and independent left/right treble/bass registers - simplifies firmware logic for multi-source UI.

Equivalent & Alternatives

The following parts are listed as comparable options for similar digitally controlled audio processor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
CS4272-CQZ	24-bit stereo DAC + analog volume/tone control; requires external microcontroller for register access; no dedicated ALC pin	Integrated DAC eliminates need for upstream DAC; higher SNR (100 dB) but larger 28-QFN package	Select when system requires DAC+processor integration and board space permits larger footprint
AK4413VN	Dedicated stereo volume/tone IC with I²C; fixed +12 dB bass boost; no ALC function; 16-pin TSSOP package	Lacks ALC and dual-input support; simpler register map but no automatic level compensation	Select for cost-sensitive designs where manual bass adjustment suffices and ALC is unnecessary

Compared with CS4272-CQZ and AK4413VN, the TDA7463AD uniquely combines programmable ALC via hardware pin, dual stereo inputs, and ultra-low supply voltage (1.8 V) in a compact 20-SSOP - making it optimal for battery-powered devices needing adaptive loudness control without added MCU overhead.

Availability

TDA7463AD is available at Aetrix Electronics and suitable for portable media players, Bluetooth speakers, USB-C audio adapters, and smart home soundbars requiring stable component supply and long-term design continuity.

Supply support for TDA7463AD 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, specializing in analog, mixed-signal, and power management ICs for automotive, industrial, and consumer markets.

The TDA7463AD belongs to ST's audio signal processing product line, designed specifically for low-voltage portable audio systems requiring high-fidelity analog conditioning with minimal external components and software overhead.

FAQ

What is the minimum supply voltage required for reliable operation of the TDA7463AD?

The TDA7463AD operates reliably from 1.8 V to 3.0 V, with typical performance characterized at 2.4 V. Below 1.8 V, functions such as I²C communication, ALC detection, and output drive capability degrade - confirmed by absolute maximum ratings and quick reference data showing 1.8 V as the guaranteed functional lower limit.

How does the ALC function interface with external circuitry?

The ALC pin accepts external resistors to configure attack time (12.5 kΩ to 100 kΩ) and release current (0.05 A to 0.4 A), and selects one of four input thresholds (0.07–0.2 Vrms) via voltage divider. No external op-amp or comparator is needed - the internal half-wave rectifier and latch handle signal detection autonomously.

Can the TDA7463AD drive headphones directly?

No - the TDA7463AD is a line-level audio processor only, with 10 kΩ output load specification and 0.2 Vrms clipping level. It requires external amplification (e.g., Class AB or Class D) to drive 16–32 Ω headphones; its outputs are intended for connection to amplifier inputs or ADCs.

Is the I²C interface compatible with standard 3.3 V microcontrollers?

Yes - the TDA7463AD's I²C inputs (SCL/SDA) accept VIH ≥ 1.9 V and VIL ≤ 0.5 V at VS = 2.4 V, fully compatible with 3.3 V GPIOs when pull-ups are tied to VS (not 3.3 V). Using 3.3 V pull-ups risks exceeding absolute max input voltage; proper level-shifting or VS-referenced pull-ups are required.

TDA7463AD Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 20-SSOP (0.209", 5.30mm Width)

Packaging:: Tube

Product Status:: Obsolete

Function:: Audio Tone Processor

Applications:: Consumer Audio

Number of Channels:: 2

Interface:: I2C

Voltage - Supply:: 1.8V ~ 3V

Operating Temperature:: -10°C ~ 85°C (TA)

Specifications:: -

Mounting Type:: Surface Mount

Grade:: -

TDA7463AD FAQ

1.How can I place an order for TDA7463AD through Aetrix?

Please submit a Request for Quotation (RFQ) for TDA7463AD 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 TDA7463AD reliable?

The price and inventory of TDA7463AD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA7463AD is usually 5 days.

3.What payment methods are accepted for TDA7463AD?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA7463AD transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TDA7463AD?

TDA7463AD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TDA7463AD 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 TDA7463AD?

For technical support, including TDA7463AD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA7463AD requirements.

6.How does Aetrix verify that TDA7463AD is sourced from the original manufacturer or authorized distributors?

All TDA7463AD 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 TDA7463AD meets industry standards.

7.What is the process for return or replacement of TDA7463AD?

All TDA7463AD units undergo pre-shipment inspection (PSI). If there is an issue with TDA7463AD, 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 TDA7463AD part is unused and in its original packaging.

Return procedure for TDA7463AD:

1.Submit a request within 90 days.

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

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