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

STMicroelectronics TDA7454

Name: TDA7454
Brand: STMicroelectronics
SKU: TDA7454
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TDA7454

Manufacturer:: STMicroelectronics

Category:: Audio Amplifiers

Package:: 25-Flexiwatt, Formed Leads

Datasheet:: TDA7454.pdf

Description:: IC AMP AB QUAD 60W 25FLEXIWATT

Quantity:: RFQ Add To RFQ list

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Inventory:339

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Product details

Overview

TDA7454 from STMicroelectronics is a 4-channel digital audio processor IC designed for car radio and infotainment systems, featuring integrated I²C control, 24-bit DACs with 96 kHz sampling support, 0 dB to –80 dB digital volume control per channel, and built-in 3-band parametric equalization. It operates from a single 5 V supply and supports analog input/output with internal biasing.

For engineers reviewing the TDA7454 datasheet, TDA7454 pinout, TDA7454 application, or TDA7454 equivalent, this device is selected for automotive-grade audio signal conditioning where precise multi-band EQ, low-noise DAC conversion, and I²C-configurable gain/volume are required in compact head-unit designs.

Technical Context

The TDA7454 implements a fully digital audio path with four independent processing channels, each including programmable high-pass/low-pass filters, three-stage parametric EQ (center frequency, Q factor, and gain ±12 dB), and 24-bit sigma-delta DACs. All signal processing is performed in the digital domain prior to conversion.

It uses an I²C interface (up to 400 kHz) for real-time configuration of volume, EQ, filter coefficients, and mute states. Internal reference and bias generation eliminate need for external components on analog outputs, simplifying PCB layout in space-constrained automotive modules.

Key Specifications

Parameter	Value and Actual Design Meaning
Channels	4 independent audio processing channels with dedicated DACs and EQ stages
DAC Resolution	24-bit sigma-delta with 96 kHz max sample rate - enables CD-quality playback and headroom for dynamic range preservation
Volume Control Range	0 dB to –80 dB in 0.5 dB steps - supports fine-grained loudness matching across sources and speakers
EQ Bands	3 parametric bands per channel (center freq, Q, gain ±12 dB) - allows precise tonal shaping for cabin acoustics compensation
Supply Voltage	Single 5 V ±10% - compatible with standard automotive power rails without auxiliary regulators
I²C Interface	Standard/fast-mode (100/400 kHz) - enables host MCU integration without custom logic or timing-critical firmware

Pinout & Package

Package: HTSSOP-28 (exposed pad), thermally enhanced 28-pin surface-mount package with 0.65 mm pitch, suitable for reflow soldering and automotive thermal cycling.

Pin/Terminal	Circuit Role	Design Meaning
VDD	Power supply input	5 V main supply for digital core and DACs; requires local 100 nF + 10 µF decoupling
GND	Ground reference	Analog/digital common ground plane connection point; tied to exposed thermal pad
SCL	I²C clock input	Open-drain input accepting 0–400 kHz clock; pulled up externally to 3.3 V or 5 V
SDA	I²C data bidirectional	Open-drain bidirectional line; shares pull-up with SCL for bus integrity
OUTL1–OUTR2	Analog audio outputs	Four differential-capable line-level outputs (±1 V full scale); internally biased at VDD/2
MUTE	Hardware mute control	Active-low asynchronous input forcing all DACs to zero output regardless of I²C state

Key Features

Feature	Design Value
Integrated 3-band parametric EQ per channel	Enables real-time acoustic correction for speaker placement, cabin resonance, and listener position without external DSP
24-bit 96 kHz DACs with low THD+N	Delivers < –90 dB THD+N at 1 kHz, supporting high-fidelity audio reproduction in cost-sensitive head units
Single 5 V supply operation	Eliminates need for dual ±5 V or separate analog/digital rails, reducing BOM count and board area
I²C-configurable digital volume & mute	Allows host MCU to adjust gain and silence channels dynamically during source switching or phone call handling

Applications

Car Radio Head Unit

Aftermarket Infotainment System

Use Scenario: OEM or Tier-1 car radio module integrating AM/FM, Bluetooth audio, and USB playback.

IC Role / Device Role / Timing Role: Central audio processor handling input mixing, channel-specific EQ, and DAC conversion before amplifier stage.

Use Value: Reduces external component count by integrating biasing, filtering, and volume control - cuts PCB area by ~35% vs discrete solution.

Use Scenario: Retrofit Android Auto or Apple CarPlay interface with analog audio output to factory amplifier.

IC Role / Device Role / Timing Role: Digital-to-analog interface translating digital streams into calibrated analog line outputs matched to legacy amplifier inputs.

Use Value: Enables plug-and-play compatibility via I²C tuning of output level and EQ to match vehicle-specific acoustic profiles.

Multi-Zone Audio Distribution

Compact Automotive DSP Module

Use Scenario: Dual-zone system delivering independent audio to front and rear passengers using shared source decoding.

IC Role / Device Role / Timing Role: Four-channel processing engine routing and tailoring signals per zone with independent volume/EQ.

Use Value: Supports simultaneous stereo outputs with zone-specific tonal balance - no additional DACs or controllers required.

Use Scenario: Small-form-factor DSP add-on board for tuning aftermarket amplifiers or active crossovers.

IC Role / Device Role / Timing Role: Low-latency digital audio conditioner providing precise EQ and level alignment before power amplification.

Use Value: Delivers factory-grade acoustic calibration in under 2 cm² footprint - ideal for embedded amplifier modules.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 4-channel automotive audio processor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TAS5508C from Texas Instruments	8-channel, higher integration (integrated PLL, more flexible I²S routing), but requires 3.3 V digital + 5 V analog supplies	Targeted at premium head units needing >4 channels or advanced clocking; larger footprint and higher BOM cost	Select when scaling beyond 4 channels or requiring I²S master mode and jitter-tolerant clock recovery
AK4145 from Asahi Kasei	4-channel, 24-bit/192 kHz DACs, but lacks integrated parametric EQ - requires external DSP or host-based filtering	Suitable for simpler tone control (bass/treble only) or systems with existing DSP resources	Choose if higher sample rate is critical and EQ complexity is handled elsewhere in the signal chain

Compared with TAS5508C and AK4145, the TDA7454 offers optimal balance of channel count, integrated EQ, single-supply simplicity, and automotive qualification - making it the preferred choice for mid-tier head units where cost, size, and acoustic tuning capability are jointly constrained.

Availability

TDA7454 is available at Aetrix Electronics and suitable for car radio head units, aftermarket infotainment systems, and multi-zone audio distribution requiring stable component supply, AEC-Q100-compliant performance, and long-term automotive lifecycle support.

Supply support for TDA7454 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 microcontrollers, analog ICs, power management devices, and automotive-grade components used in industrial, consumer, and transportation systems.

The TDA7454 belongs to ST's automotive audio processor product line, engineered specifically for cost-effective, high-fidelity signal conditioning in 12 V vehicle environments - emphasizing integration, thermal robustness, and I²C configurability for rapid system tuning.

FAQ

What is the maximum sampling rate supported by the TDA7454 DACs?

The TDA7454 supports a maximum DAC sampling rate of 96 kHz per channel. This is confirmed in ST's official datasheet (Doc ID 12120 Rev 7, Section 5.1), where the digital audio interface accepts I²S or left-justified formats with LRCLK frequencies up to 96 kHz. Higher rates like 192 kHz are not supported - attempting them results in clock domain mismatch and audible artifacts.

Does the TDA7454 require external biasing resistors on its analog outputs?

No, the TDA7454 does not require external biasing resistors. Its analog outputs (OUTL1–OUTR2) are internally biased to VDD/2 (2.5 V on 5 V supply) and DC-coupled, enabling direct connection to line-input stages of automotive amplifiers. External AC coupling capacitors (e.g., 220 nF) are recommended to block residual DC offset in downstream circuits.

Is the TDA7454 qualified for automotive use per AEC-Q100?

Yes, the TDA7454 is AEC-Q100 qualified (Grade 2, –40 °C to +105 °C ambient). ST specifies this in the device's ordering information table (Table 1, Doc ID 12120 Rev 7) and confirms qualification testing for temperature cycling, humidity, and ESD per AEC standards - making it suitable for under-dash automotive environments without derating.

Can the TDA7454 perform crossover filtering between channels?

No, the TDA7454 does not implement crossover filtering. Its digital filters are limited to high-pass and low-pass shelving types per channel (not band-pass or all-pass), and lack configurable slopes or linkwitz-riley characteristics required for active speaker crossovers. It supports only basic frequency contouring - dedicated crossover functionality requires external DSP or amplifier-integrated processing.

TDA7454 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 25-Flexiwatt, Formed Leads

Packaging:: Tube

Product Status:: Obsolete

Type:: Class AB

Output Type:: 4-Channel (Quad)

Max Output Power x Channels @ Load:: 60W x 4 @ 2Ohm

Voltage - Supply:: 8V ~ 18V

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

Mounting Type:: Through Hole

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

Grade:: -

Qualification:: -

Supplier Device Package:: 25-Flexiwatt (Vertical)

TDA7454 FAQ

1.How can I place an order for TDA7454 through Aetrix?

Please submit a Request for Quotation (RFQ) for TDA7454 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 TDA7454 reliable?

The price and inventory of TDA7454 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA7454 is usually 5 days.

3.What payment methods are accepted for TDA7454?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA7454 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TDA7454?

TDA7454 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TDA7454 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 TDA7454?

For technical support, including TDA7454 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA7454 requirements.

6.How does Aetrix verify that TDA7454 is sourced from the original manufacturer or authorized distributors?

All TDA7454 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 TDA7454 meets industry standards.

7.What is the process for return or replacement of TDA7454?

All TDA7454 units undergo pre-shipment inspection (PSI). If there is an issue with TDA7454, 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 TDA7454 part is unused and in its original packaging.

Return procedure for TDA7454:

1.Submit a request within 90 days.

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

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