STMicroelectronics TDA7801SMTR 2ch Audio Amplifier, DFN8 Package for Automotive & Home Audio

STMicroelectronics TDA7801SMTR 2ch Audio Amplifier Overview for Compact High-Power Sound Systems

The STMicroelectronics TDA7801SMTR is a compact, high-power 2-channel audio amplifier engineered for B2B applications that demand robust sound output, space efficiency, and rugged performance-targeted at Automotive Electronics (motorcycle audio systems, entry-mid car stereos), Home Appliances (compact home speakers, built-in audio docks), and Consumer Electronics (portable soundbars, mini AV receivers). It integrates critical features-25W RMS per channel amplification, 92dB signal-to-noise ratio (SNR), 0.015% total harmonic distortion + noise (THD+N), DFN8 surface-mount package, and automotive-grade protection-to eliminate external power amplification components and streamline device design.

With space-efficient high-power audio amplification (tuned for both automotive voltage stability and home audio clarity), it balances strong sound output with minimal PCB space and low distortion. This makes it ideal for engineers prioritizing power density (high wattage in small enclosures), sound fidelity (hi-fi performance), and reliability (extreme temperature operation) in audio systems. As part of STMicroelectronics?? compact high-power audio lineup-a series trusted by 168,000+ developers in automotive and home tech sectors-it meets strict quality benchmarks: RoHS 2 compliance, ISO 9001 certification, AEC-Q100 Grade 3 (automotive reliability), IEC 61000-6-3/4 EMC compliance (home/automotive), and 5,400+ hours of reliability testing (including thermal cycling, voltage spike, and load stability validation).

Senior engineers at a leading motorcycle audio brand endorse it: ??This amplifier powers our dash stereos. The 25W RMS delivers loud sound over road noise, and the DFN8 package fits our tiny dash enclosures. It??s helped us hit 99.92% device uptime and 94% customer satisfaction.?? For more compact high-power audio components, visit IC Manufacturer.

Technical Parameters of STMicroelectronics TDA7801SMTR

Key Technical Features of TDA7801SMTR Audio Amplifier

• 25W RMS Per Channel Output: Delivers high-volume sound. A car stereo designer noted: ??Users report ??clear audio at highway speeds??-loudness satisfaction rose by 40%, cutting ??not loud enough?? complaints by 32%.??
• 0.015% THD+N: Ensures hi-fi fidelity. A home speaker brand shared: ??Eliminates distortion at high volume-??sound quality?? ratings jumped from 3.5/5 to 4.8/5, driving 35% more premium speaker sales.??
• DFN8 Compact Package: Saves space. A motorcycle audio firm confirmed: ??PCB space used dropped by 60%-our dash stereo now fits 98% of motorcycle models, up from 45% with old DIP amplifiers.??
• Multi-Protection Features: Prevents damage. An automotive supplier said: ??Overload/short-circuit protection reduced amplifier failures by 28%, cutting warranty costs by $19,000 yearly.??
• 75% Operation Efficiency: Reduces heat. A portable soundbar brand explained: ??Lower heat means no heat sink-we cut device weight by 25%, making our soundbars easier to mount.??

Advantages of TDA7801SMTR vs. Typical Alternatives

Compared to low-power 2ch amplifiers (15W RMS), bulky DIP16 2ch amplifiers, and high-distortion 2ch amplifiers, the TDA7801SMTR solves critical B2B pain points-backed by real customer feedback:

1. Higher Power Than Low-Power 2ch Amplifiers: Low-power 15W RMS amplifiers struggle to cut through road noise in cars or fill small rooms, leading to ??too quiet?? complaints. The 25W RMS output of this amplifier fixes this. A car stereo brand said: ??Our old 15W amplifier had 34% ??not loud enough?? complaints-this 25W model delivers clear sound at highway speeds. Complaints dropped to 9%, and entry-mid stereo sales rose by 33%.??

2. Space-Saving Design Than Bulky DIP16 2ch Amplifiers: Bulky DIP16 amplifiers take up 150% more PCB space, forcing compact devices (like motorcycle dash stereos) to be too large. The DFN8 package eliminates this. A motorcycle audio brand shared: ??Our old DIP16 amplifier needed a 10mm x 8mm PCB area-this DFN8 model uses 3mm x 3mm. We launched a dash stereo that fits all our motorcycle models, and market share in motorcycle audio grew by 28%.??

3. Lower Distortion Than High-Distortion 2ch Amplifiers: High-distortion amplifiers (0.1% THD+N) produce fuzzy sound at high volume, ruining music quality. The 0.015% THD+N of this amplifier fixes this. A home speaker brand confirmed: ??Our old 0.1% THD amplifier had 29% ??distorted sound?? complaints-this 0.015% model delivers crisp audio even at max volume. Complaints dropped to 7%, and premium speaker repeat purchases rose by 36%.??

Typical Applications of STMicroelectronics TDA7801SMTR

This compact high-power 2ch audio amplifier excels in space-constrained, power-hungry B2B designs-proven in these key use cases:

• Automotive Electronics (Motorcycle Audio Systems): 25W RMS cuts through road noise, DFN8 fits dash enclosures. A motorcycle brand confirmed: ??Device uptime at 99.92%, loudness satisfaction up by 40%.??
• Home Appliances (Compact Home Speakers): 0.015% THD+N ensures hi-fi sound, 75% efficiency reduces heat. A home brand reported: ??Speaker distortion complaints down by 28%, ??sound quality?? ratings up by 42%.??
• Consumer Electronics (Portable Soundbars): DFN8 saves space, no heat sink needed. A consumer brand noted: ??Soundbar weight down by 25%, 25W output drives 33% more sales.??
• Automotive Electronics (Entry-Mid Car Stereos): Withstands extreme temps, 25W RMS powers door speakers. A car brand shared: ??Car stereo failure rate down by 2.2%, warranty costs saved $20,000 yearly.??
• Home Appliances (Built-In Audio Docks): Compact package eases installation, 92dB SNR blocks household noise. A home brand confirmed: ??Audio dock installation time cut by 30%, ??noise-free?? ratings up by 38%.??

Frequently Asked Questions (FAQ) About STMicroelectronics TDA7801SMTR

Why is the 25W RMS output important for motorcycle audio systems?

Motorcycle audio systems need to overcome road, wind, and engine noise-low-power 15W amplifiers can??t produce enough volume to be heard at highway speeds, leading to user frustration. The 25W RMS output ensures clear audio even in noisy conditions. A motorcycle audio engineer said: ??Our old 15W system had 41% ??can??t hear at speed?? complaints-this 25W model fixes that. Motorcycle audio satisfaction rose from 3.2/5 to 4.7/5, and we now capture 35% of the motorcycle audio market, up from 18% before.??

How does the DFN8 package help with compact home speaker designs?

Compact home speakers (like bookshelf or wall-mounted models) have limited internal space-bulky DIP16 amplifiers force speakers to be larger, reducing their appeal for small rooms. The DFN8 package??s tiny size lets speakers stay compact while still delivering high power. A home speaker designer said: ??Our old DIP16 speaker was 15cm wide-too big for narrow bookshelves. This DFN8 model is 10cm wide, fitting 95% of small spaces. Compact speaker sales rose by 38%, and we now sell to 12 new retail partners focused on small-space furniture.??

What value does 0.015% THD+N add for premium home speaker users?

Premium home speaker users listen to high-quality audio (like vinyl or lossless music) and notice even small distortion-high THD+N (0.1%) amplifiers make music sound fuzzy or ??muddy?? at high volume, ruining the listening experience. 0.015% THD+N ensures crisp, accurate sound. A premium home brand said: ??Our old 0.1% THD speaker had 32% ??distorted sound?? complaints from audiophiles-this 0.015% model eliminates that. Audiophile customer retention rose by 42%, and our ??hi-fi quality?? rating is now 96%, up from 78% before.??

How do the multi-protection features benefit automotive audio systems?

Automotive audio systems face risks like short circuits (e.g., speaker wire damage) or voltage spikes (e.g., from car batteries), which can destroy amplifiers. The TDA7801SMTR??s overload, short-circuit, and under-voltage protection prevent this damage. An automotive supplier said: ??Our old unprotected amplifier had a 12% failure rate due to short circuits-this model??s protection cuts failures to 3.2%. We save $20,000 yearly in warranty costs, and carmakers now require this amplifier for their entry-mid models.??

Why is 75% efficiency important for portable soundbars?

Portable soundbars rely on batteries or small power adapters-low-efficiency amplifiers waste energy as heat, requiring larger batteries (adding weight) or frequent charging. 75% efficiency reduces heat and energy use, letting soundbars be lighter and last longer on battery. A portable soundbar brand said: ??Our old 60% efficiency soundbar weighed 800g and lasted 4 hours on battery-this 75% model weighs 550g and lasts 6 hours. Portable soundbar sales rose by 34%, and users now rate ??portability?? and ??battery life?? as top satisfaction points, up from bottom 2 before.??