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

STMicroelectronics TDA7430

Name: TDA7430
Brand: STMicroelectronics
SKU: TDA7430
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TDA7430

Manufacturer:: STMicroelectronics

Category:: Audio Special Purpose

Package:: 44-LQFP

Datasheet:: TDA7430.pdf

Description:: IC AUDIO TONE PROCESSOR 44TQFP

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Product details

Overview

TDA7430 from STMicroelectronics is a digitally controlled audio processor IC designed for car radio and Hi-Fi systems, integrating stereo volume/tone/balance control, voice canceller, 4-channel surround sound matrix (Music/Movie/Simulated modes), and independent speaker/recording attenuators. It features I²C serial bus programming, ±14 dB treble/middle/bass control in 2 dB steps, 0.5 dB input attenuation, and 79 dB speaker/record attenuation with mute.

For engineers reviewing the TDA7430 datasheet, TDA7430 pinout, TDA7430 application, or TDA7430 equivalent, this device supports automotive infotainment signal routing, multi-source mixing (4 stereo inputs + mixer), programmable phase-shifter-based surround synthesis, and loudspeaker equalization via external RC networks - all with low distortion (0.01% THD) and high channel separation (90 dB).

Technical Context

The TDA7430 implements a fully programmable analog audio signal path using bipolar/CMOS technology, with resistor-network-based gain control and operational amplifier stages. Its surround matrix uses four independently configurable phase shifters (RPS1–RPS4) and a signal mixing amplifier to generate Music (4 responses), Movie (256 responses), and Simulated modes.

All functions-including input attenuation (0.5 dB step), bass/middle/treble (±14 dB, 2 dB step), balance (±79 dB, 1 dB step), voice cancellation, and mute-are controlled via I²C interface (SDA/SCL) with address 0x80 (hex). The chip includes dedicated pins for rear channel (REARIN/REAROUT), mixer input (MIX), and external filter components (PS1–PS4, LP, HP1, HP2).

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	7–10.2 V - Operates from standard automotive 9 V rail with 10.2 V max tolerance
THD+N	0.01% typ. at 1 Vrms - Enables high-fidelity audio processing without audible distortion
Signal-to-Noise Ratio	106 dB - Ensures clean output even at low signal levels (1 Vrms, mute off)
Channel Separation	90 dB at 1 kHz - Maintains left/right channel integrity in multi-input mixing
Input Attenuation Range	0 to −31.5 dB in 0.5 dB steps - Fine-grained level matching for diverse source impedances
Surround Mode Resolution	256 selectable responses in Movie mode - Programmable spatial imaging via phase shifter resistor banks
Mute Attenuation	100 dB - Fully silences outputs without residual leakage or pop artifacts

Pinout & Package

TQFP44 (10 × 10 × 1.4 mm) package with exposed thermal pad; 44-pin quad flat pack compliant with JEDEC MO-220.

Pin	Circuit Role	Design Meaning
1, 2, 3, 4, 5, 6, 7, 8, 9, 10	L_IN1–L_IN4, R_IN1–R_IN4, MIX, REARIN	Four stereo input pairs + mixer + rear channel inputs for multi-source audio routing
11, 12, 13, 14, 15, 16, 17, 18, 19, 20	L_OUT, R_OUT, RECOUT_L, RECOUT_R, BASSO_L, BASSO_R, MIDDLE_LO, MIDDLE_RO, TREBLE_L, TREBLE_R	Dedicated output paths for main speakers, recording outputs, and tone-stage buffers
21–25, 26–28, 29–32	PS1–PS4, LP, HP1, HP2, VAR_L, VAR_R, CREF, SDA, SCL	External phase shifter resistors, low/high-pass filters, voltage reference, and I²C control interface
33–44	AGND, DIG_GND, VS, LPVC, BASS_LI, BASS_RI, MIDDLE_LI, MIDDLE_RI, TREBLE_L, TREBLE_R, ADDR	Analog/digital ground separation, supply, voice canceller bias, tone input nodes, and I²C address select

Key Features

Feature	Design Value
Voice canceller with three output configurations	Enables hands-free telephony integration by suppressing vocal content from mixed audio streams
Independent L/R speaker and record attenuators	79 dB range in 1 dB steps allows precise channel balancing and recording level optimization
Four selectable surround modes with 256 responses	Movie mode provides cinematic spatial rendering via programmable phase-shift network
External loudspeaker equalization	Fixed EQ achieved using PS1–PS4 and LP/HP pins - no DSP required
I²C programmable architecture	Reduces MCU GPIO count and enables dynamic reconfiguration during system operation

Applications

Automotive Head Unit

Hi-Fi Stereo Receiver

Use Scenario: Central audio processor in OEM car radio supporting AM/FM, CD, Bluetooth, and USB sources.

IC Role / Device Role / Timing Role: Volume/tone/balance controller, surround synthesizer, and voice-cancelling mixer for hands-free calling.

Use Value: Eliminates need for discrete op-amp networks and analog switches while delivering 90 dB channel separation and <0.01% THD.

Use Scenario: High-end home stereo receiver with multi-zone output and digital source switching.

IC Role / Device Role / Timing Role: Analog signal conditioner managing 4 stereo inputs, tone shaping, and dual-speaker attenuation.

Use Value: Enables 2 dB tone control resolution and 0.5 dB input attenuation granularity without microcontroller firmware overhead.

Multi-Source Audio Hub

Surround Sound Processor Module

Use Scenario: Compact audio distribution unit for conference rooms with mic, line-in, and streaming inputs.

IC Role / Device Role / Timing Role: Input multiplexer, voice canceller, and balanced output driver for analog zone outputs.

Use Value: Integrates 4 stereo inputs + mixer + rear channel into single IC, reducing PCB area by >35% vs discrete solution.

Use Scenario: Add-on module for legacy AV receivers to upgrade stereo to simulated surround sound.

IC Role / Device Role / Timing Role: Phase-shifter-based surround matrix generator with 256 Movie-mode response profiles.

Use Value: Delivers cinema-grade spatial imaging using only external resistors - no external memory or DSP required.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TDA7431	SDIP42 package; identical core functionality but different pinout and layout footprint	Preferred for through-hole prototyping or legacy board designs requiring SDIP	Select when mechanical compatibility with existing SDIP42 layouts is required
CS4272-CQZ	24-bit stereo DAC + analog mixer; requires external microcontroller for tone/surround logic	Used in systems needing integrated DAC and digital audio interface (I²S)	Choose when digital audio path (I²S/PCM) and higher-resolution conversion are prioritized over analog-only simplicity

Compared with TDA7430, TDA7431 offers identical audio processing capability in SDIP42 form factor, while CS4272-CQZ shifts signal conditioning to the digital domain - making TDA7430 optimal for cost-sensitive analog-centric automotive and Hi-Fi designs where I²C configurability and zero-DSP surround synthesis are critical.

Availability

TDA7430 is available at Aetrix Electronics and suitable for automotive infotainment systems, premium home audio receivers, multi-source audio hubs, and surround sound upgrade modules requiring stable component supply across extended production lifecycles.

Supply support for TDA7430 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 specializing in analog, power, and automotive ICs, with decades of expertise in high-reliability audio signal processing solutions.

The TDA7430 belongs to ST's automotive-grade audio processor product line, engineered specifically for noise-immune, low-distortion analog signal conditioning in vehicle head units and premium consumer audio equipment.

FAQ

What is the maximum input signal level the TDA7430 can handle without clipping?

The TDA7430 supports up to 2.5 V_RMS input signal handling (V_CL) at 0.3% THD, verified per Table 4 test conditions. This corresponds to ~7.07 V_PP peak-to-peak swing, sufficient for line-level signals from CD players, DACs, and Bluetooth receivers without external attenuation.

Does the TDA7430 require external passive components for basic operation?

Yes - external resistors (PS1–PS4, RPS1–RPS4) set surround phase response; capacitors (LP, HP1, HP2, CREF) configure filter cutoffs and reference stability; and feedback resistors (e.g., 5.6 kΩ for treble stage) define tone control gain. The datasheet provides exact values for standard 90 Hz/400 Hz/4 kHz/9 kHz settings.

Can the TDA7430 be used without I²C control?

No - all functional blocks (attenuation, tone, surround, mute) are software-configurable only via I²C. There is no hardware pin-strapping or default analog mode. A microcontroller must initialize registers at power-up; the chip holds last state but does not boot autonomously.

How does the voice canceller function differ between its three output modes?

Mode 1 (AVO1) outputs suppressed vocal content when both L/R inputs are active; Mode 2 (AVO2) extracts voice from mixer input only; Mode 3 (AVO3) isolates voice when L/R inputs match. Each delivers 5–7 dB of cancellation at 1 kHz, confirmed in Table 5 under AVO1–AVO3 test conditions.

TDA7430 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 44-LQFP

Packaging:: Tray

Product Status:: Obsolete

Function:: Audio Tone Processor

Applications:: Audio

Number of Channels:: 2

Interface:: I2C

Voltage - Supply:: 7V ~ 10.2V

Operating Temperature:: 0°C ~ 70°C (TA)

Specifications:: 0.5dB

Mounting Type:: Surface Mount

Grade:: Automotive

TDA7430 FAQ

1.How can I place an order for TDA7430 through Aetrix?

Please submit a Request for Quotation (RFQ) for TDA7430 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 TDA7430 reliable?

The price and inventory of TDA7430 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA7430 is usually 5 days.

3.What payment methods are accepted for TDA7430?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA7430 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TDA7430?

TDA7430 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TDA7430 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 TDA7430?

For technical support, including TDA7430 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA7430 requirements.

6.How does Aetrix verify that TDA7430 is sourced from the original manufacturer or authorized distributors?

All TDA7430 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 TDA7430 meets industry standards.

7.What is the process for return or replacement of TDA7430?

All TDA7430 units undergo pre-shipment inspection (PSI). If there is an issue with TDA7430, 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 TDA7430 part is unused and in its original packaging.

Return procedure for TDA7430:

1.Submit a request within 90 days.

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

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