Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

STMicroelectronics TDA7297

Name: TDA7297
Brand: STMicroelectronics
SKU: TDA7297
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: TDA7297

Manufacturer:: STMicroelectronics

Category:: Audio Amplifiers

Package:: Multiwatt-15 (Vertical, Bent and Staggered Leads)

Datasheet:: TDA7297.pdf

Description:: IC AMP AB STEREO 15W 15MULTIWATT

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:514

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

TDA7297 from STMicroelectronics is a dual bridge audio power amplifier IC designed for TV and portable radio systems, delivering 15W per channel into 8Ω at 16.5V supply, with internally fixed 32dB gain, 60–80dB mute attenuation, and integrated thermal/short-circuit protection.

For engineers reviewing the TDA7297 datasheet, TDA7297 pinout, TDA7297 application, or TDA7297 equivalent, key selection considerations include its Multiwatt-15 package, wide 6–18V supply range, no external bootstrap/SVR capacitors, microprocessor-controllable ST-BY/MUTE sequencing, and 0.1–1% THD across 100Hz–15kHz.

Technical Context

The TDA7297 implements a Class AB dual bridge topology with fully differential inputs, internal biasing, and rail-to-rail output swing capability. It uses a single-ended input architecture with DC-coupled outputs and integrates independent ST-BY and MUTE control logic with precise voltage thresholds (VTST-BY = 0.8–1.8V, VTMUTE = 2.3–4.1V).

Thermal management relies on junction-to-case thermal resistance of 1.4°C/W (typ), enabling 33W total dissipation at 70°C case temperature. Protection circuitry includes foldback current limiting, thermal shutdown at 150°C, and safe operating area (SOA) enforcement without external sensing components.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Power	15W per channel into 8Ω @ 16.5V, THD = 10% - enables full-range speaker drive in compact TV/audio enclosures
Supply Range	6.5V to 18V - supports battery-powered portables and regulated 12V TV supplies without LDO pre-regulation
THD+N	0.1–0.3% @ 1W, 1kHz - meets broadcast-grade audio fidelity requirements for consumer display audio
Gain	31–33dB (fixed) - eliminates external feedback network, reducing BOM count and layout sensitivity
Mute Attenuation	60–80dB - suppresses pop-noise to audibly imperceptible levels during power transitions
Input Resistance	25–30kΩ - compatible with standard line-level and DAC output impedances without loading
Quiescent Current	50–65mA @ VCC = 16.5V - enables low-power standby mode with <100µA ST-BY current

Pinout & Package

Package: Multiwatt-15 (vertical mounting, heatsink-compatible, 22.2mm × 17.7mm footprint, 1.27mm lead pitch).

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 4	Vref / NC / S-GND	Vref provides internal reference; Pins 1 & 4 are no-connects; Pin 2 is signal ground for input stage stability
3, 8, 9	PW-GND / OUT2− / OUT1−	PW-GND handles high-current return paths; OUTx− pins are negative bridge outputs requiring symmetric PCB routing
6, 7	MUTE / ST-BY	Digital control inputs with defined voltage thresholds (MUTE: 2.3–4.1V active-high; ST-BY: 0.8–1.8V active-high)
10–11	N.C.	No-connect pins - must remain unconnected per datasheet to avoid latch-up or instability
12–15	OUT2+ / OUT1+ / VCC / IN2 / IN1	Power outputs (12,15), dual supply input (13), and differential-capable inputs (14,15) - IN1/IN2 accept AC-coupled or DC-coupled signals

Key Features

Feature	Design Value
No external bootstrap capacitors	Eliminates 2× 10µF–22µF electrolytics per channel, reducing board area and cost in space-constrained TV mainboards
Internally fixed 32dB gain	Removes need for precision gain-setting resistors, improving production yield and eliminating gain mismatch between channels
Independent ST-BY and MUTE control	Enables precise sequencing (100–200ms delay) to prevent pop-noise - critical for microprocessor-driven UI transitions
Thermal shutdown at 150°C	Self-protects under sustained overload or poor heatsinking without external thermal sensors or shutdown logic
Short-circuit protected outputs	Withstands indefinite short to GND, VCC, or cross-channel shorts while limiting peak current to 2A (internally clamped)

Applications

TV Audio Amplification

Portable Radio Output Stage

Use Scenario: Driving 8Ω stereo speakers in 32–55″ LCD/LED TVs with integrated digital audio processing.

IC Role / Device Role / Timing Role: Dual-channel bridge amplifier receiving line-level I²S or analog signals from SoC audio DACs; operates continuously during video playback.

Use Value: Delivers 15W/channel clean output with <0.3% THD at 1kHz, meeting IEC 60268 loudspeaker test standards for consumer displays.

Use Scenario: Final amplification stage in battery-powered AM/FM radios with mono or stereo speaker output.

IC Role / Device Role / Timing Role: Power output driver accepting buffered DAC or tuner IF output; enters ST-BY during sleep mode to reduce quiescent draw to <100µA.

Use Value: Wide 6–18V operation accommodates 6×AA (9V nominal) or Li-ion (12.6V max) packs without voltage regulation overhead.

Set-Top Box Audio

Monitor Speaker Module

Use Scenario: Embedded audio subsystem in cable/satellite STBs where HDMI-ARC is unavailable and analog audio is routed to internal speakers.

IC Role / Device Role / Timing Role: Standalone dual amplifier activated only when audio menu or alert tones are generated - controlled via GPIO from ARM Cortex-M MCU.

Use Value: MUTE/ST-BY sequencing prevents audible click during menu navigation, satisfying EN 55032 conducted emission limits for transient noise.

Use Scenario: Compact desktop monitor with built-in stereo speakers requiring minimal external components and low EMI.

IC Role / Device Role / Timing Role: Bridge-mode amplifier directly driven by monitor's TCON or embedded audio codec; uses PW-GND/S-GND separation to suppress ground bounce in mixed-signal PCBs.

Use Value: Eliminates external SVR capacitor and Boucherot cells, reducing component count by ≥7 parts per channel versus legacy TDA7293 designs.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual bridge audio amplifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TDA7293	Higher 30W/channel output, requires external bootstrap and SVR capacitors, ±15V dual supply preferred	Suited for high-fidelity home audio; not drop-in due to different pinout and protection behavior	Select only if >20W/channel and discrete thermal design are required; adds 5+ passive components per channel
TPA3116D2	Class-D efficiency (90%), 30W/channel, requires external LC filter, no integrated ST-BY/MUTE sequencing logic	Battery life–critical portable designs; lacks analog-compatible mute threshold behavior	Choose for >8-hour battery runtime; requires redesign of control timing and output filtering

Compared with TDA7293 and TPA3116D2, the TDA7297 offers lowest BOM count and simplest layout for 15W-class TV/radio audio, trading peak efficiency and power for plug-and-play analog integration and robust pop-noise suppression.

Availability

TDA7297 is available at Aetrix Electronics and suitable for TV audio subsystems, portable radio final stages, set-top box speaker drivers, and monitor-integrated speaker modules requiring stable component supply and long-lifecycle support.

Supply support for TDA7297 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, designing and manufacturing analog, microcontroller, power, and sensor solutions for automotive, industrial, and consumer markets.

The TDA7297 belongs to ST's legacy audio power amplifier product line, engineered specifically for cost-sensitive, space-constrained consumer audio applications where simplicity, reliability, and pop-noise immunity are prioritized over peak efficiency.

FAQ

What is the minimum recommended supply voltage for reliable operation?

The TDA7297 specifies a minimum supply voltage of 6.5V under all operating conditions. At 6V, output power drops below 10W/channel and THD increases above 1%, so 6.5V is the validated lower limit for full-spec performance across temperature and load variations.

Can the TDA7297 drive 4Ω speakers?

Yes - the datasheet confirms operation into 4Ω loads with derated output power (≈10W/channel at 16.5V, THD = 10%) and increased thermal stress. Heatsink area must be increased by ≥40% versus 8Ω use, and total power dissipation must stay below 33W at case temperature ≤70°C.

Is there a recommended PCB layout for thermal management?

Yes - the Multiwatt-15 package requires direct copper pour connection from pins 3, 8, and 9 (PW-GND) to a ≥10cm² internal or external copper heatsink plane. Thermal vias (≥8× 0.3mm diameter) must connect top-layer PW-GND pads to inner-layer ground planes to maintain Rth j-case ≤1.4°C/W.

How does the mute function behave during power-up sequencing?

The mute function remains active (output attenuated >60dB) until pin 6 voltage exceeds 2.3V. In microprocessor applications, this requires delaying the MUTE high signal by 100–200ms after ST-BY reaches 0.8V, allowing input coupling capacitors (0.22µF) to fully charge and eliminate DC transients at the outputs.

TDA7297 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: Multiwatt-15 (Vertical, Bent and Staggered Leads)

Packaging:: Tube

Product Status:: Active

Type:: Class AB

Output Type:: 2-Channel (Stereo)

Max Output Power x Channels @ Load:: 15W x 2 @ 8Ohm

Voltage - Supply:: 6.5V ~ 18V

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

Mounting Type:: Through Hole

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

Grade:: -

Qualification:: -

Supplier Device Package:: 15-Multiwatt

TDA7297 FAQ

1.How can I place an order for TDA7297 through Aetrix?

Please submit a Request for Quotation (RFQ) for TDA7297 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 TDA7297 reliable?

The price and inventory of TDA7297 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA7297 is usually 5 days.

3.What payment methods are accepted for TDA7297?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA7297 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TDA7297?

TDA7297 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TDA7297 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 TDA7297?

For technical support, including TDA7297 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA7297 requirements.

6.How does Aetrix verify that TDA7297 is sourced from the original manufacturer or authorized distributors?

All TDA7297 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 TDA7297 meets industry standards.

7.What is the process for return or replacement of TDA7297?

All TDA7297 units undergo pre-shipment inspection (PSI). If there is an issue with TDA7297, 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 TDA7297 part is unused and in its original packaging.

Return procedure for TDA7297:

1.Submit a request within 90 days.

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

Tech Hub

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…

2026-08-11 LDO Regulator: Dropout Voltage, Noise, PSRR and Power Dissipation

LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…

2026-08-06 Conditional Access Module: CAM, CI/CI+ and DVB Security

Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…

2026-08-03 Electronic Component Obsolescence: EOL Risks, Replacement Options and Last-Time Buy Strategy

Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…