STMicroelectronics E-TDA7416

Overview

E-TDA7416 from STMicroelectronics is a car radio signal processor IC with integrated audio processing, 7-band equalizer control, spectrum analyzer function, volume control, soft mute, speaker control, subwoofer output, and I²C bus programming. The device is intended for car audio head-unit signal routing and sound-processing stages where multiple analog audio sources must be selected, conditioned, mixed, equalized, and routed to speaker and subwoofer outputs.

For engineers reviewing the E-TDA7416 datasheet, E-TDA7416 pinout, E-TDA7416 application, or E-TDA7416 equivalent, this audio processor is most relevant for car radio audio processors, aftermarket receiver platforms, multi-source audio selection, 4-speaker output processing, subwoofer channel generation, spectrum display interfaces, and I²C-controlled analog audio systems requiring TQFP44 tray assembly.

Technical Context

E-TDA7416 integrates three stereo inputs and one pseudo-differential stereo input, allowing a car radio controller to select and process multiple audio sources such as tuner, CD, auxiliary, navigation, or external audio paths. The input selector supports 100 kΩ typical single-ended input resistance, 2.2 VRMS typical clipping level, 100 dB typical input separation, input gain up to 15 dB, and AutoZero offset cancellation for reducing input-stage offset effects.

The audio-processing chain includes loudness control, soft mute, soft-step volume, 7-band equalizer, full mixing capability, high-pass filter functions, four independent speaker outputs, and a subwoofer output with soft-step control. The 7-band spectrum analyzer uses band-pass filters, rectification, and a sample capacitor structure, with readout through SAOUT and clocking through SACLK / SAIN timing pins for microcontroller-driven display or audio-level monitoring.

Key Specifications

Pinout & Package

E-TDA7416 is supplied in a TQFP44 package with a nominal 10 mm × 10 mm body, 1.4 mm nominal package height, and 0.80 mm lead pitch. The 44-lead quad flat package separates analog audio inputs, AC-coupling nodes, speaker outputs, subwoofer output, I²C control pins, analyzer interface pins, power supply pins, and reference pins around the package perimeter, supporting organized routing in car radio audio processor layouts.

Key Features

• Car radio signal processor with integrated high-performance audio processor, 7-band equalizer, and 7-band spectrum analyzer.
• Three stereo inputs plus one pseudo-differential stereo input for multi-source car audio systems.
• I²C bus programming for input selection, gain, equalization, mixing, mute, subwoofer, high-pass, and speaker-level functions.
• Four independent speaker outputs with soft-step control for front and rear audio channels.
• Dedicated subwoofer output with soft-step control and selectable low-pass filter options.
• Direct mute and digitally controlled soft mute for controlled audio suppression and transition behavior.
• Full mixing capability and HPF2 function with ZeroCross support.
• TQFP44 tray package for organized routing of analog audio, I²C control, analyzer, supply, and reference pins.

Applications

Equivalent & Alternatives

When evaluating E-TDA7416 equivalent devices, engineers should compare input count, pseudo-differential input support, equalizer architecture, spectrum analyzer function, subwoofer output, speaker-output structure, I²C register behavior, supply voltage, package footprint, and whether the target circuit needs a 7-band equalizer or a simpler 3-band car audio processor.

Compared with TDA7419, E-TDA7416 is optimized for a 7-band equalizer architecture and TQFP44 routing rather than a simpler 3-band SO-28 car audio processor layout. E-TDA7416 vs TDA7418 or TDA7719 selection depends on equalizer depth, spectrum analyzer use, subwoofer behavior, firmware compatibility, package footprint, and whether the design is a legacy replacement or a new audio-platform redesign.

Quality

E-TDA7416 should be sourced as original STMicroelectronics components through traceable and controlled supply channels. Quality verification procedures may include TQFP44 package inspection, top-mark validation, tray and label review, solderability testing, lead coplanarity inspection, VDD / GND continuity checks, I²C communication verification, input-source switching checks, speaker-output audio test, spectrum analyzer readout verification, mute-function testing, and incoming inspection according to car audio electronics production requirements.

Availability

E-TDA7416 is available at Aetrix Electronics and suitable for car radio audio processors, aftermarket receiver platforms, legacy infotainment audio boards, repair programs, audio signal-routing modules, and multi-source analog audio systems requiring stable component supply and repeatable production support.

Supply support may include scheduled delivery planning, volume procurement support, BOM continuity assistance, traceable sourcing management, and long-term availability support for car audio manufacturers, repair groups, contract manufacturers, aftermarket receiver builders, legacy product owners, and embedded audio system developers.

For production deployment, confirming the TQFP44 package, tray packing format, 9 V typical supply plan, I²C control requirement, input and output pin mapping, equalizer and spectrum-analyzer firmware behavior, speaker and subwoofer routing, environmental specifications, and sourcing continuity helps reduce procurement risk and improve manufacturing stability.

Manufacturer

STMicroelectronics supplies analog audio processors, automotive infotainment devices, microcontrollers, power-management ICs, sensors, protection products, RF components, and discrete semiconductors for industrial, consumer, automotive, communication, and embedded applications. E-TDA7416 belongs to ST's car radio audio processor portfolio for I²C-controlled analog signal processing in multi-source audio systems.

FAQ

What is E-TDA7416 used for?

E-TDA7416 is used as a car radio signal processor for selecting analog audio inputs, controlling volume, applying 7-band equalization, generating speaker and subwoofer outputs, supporting soft mute, and providing spectrum analyzer readout. It is typically placed between source audio circuits and external power-amplifier stages in car audio head units.

How many audio inputs does E-TDA7416 support?

E-TDA7416 supports three stereo inputs and one pseudo-differential stereo input. This input structure allows a car radio design to connect multiple audio sources while also supporting a pseudo-differential path for improved common-mode noise rejection on one stereo input channel group.

Does E-TDA7416 include an equalizer?

Yes. E-TDA7416 includes 7-band equalizer filter control. The equalizer bands cover low, mid, and high audio frequency regions, with programmable filter behavior through the I²C bus. This makes E-TDA7416 more suitable for detailed car-audio sound shaping than simpler bass / middle / treble-only audio processors.

Does E-TDA7416 include a spectrum analyzer?

Yes. E-TDA7416 includes a fully integrated 7-band spectrum analyzer. The analyzer uses internal band-pass filters and peak sampling, with readout through the SAOUT pin and clocked access through the analyzer control interface. This function can support front-panel audio display or microcontroller-based audio-level monitoring.

What supply voltage does E-TDA7416 require?

E-TDA7416 operates from a 7.5 V to 10 V supply range, with 9 V typical operation. The supply current is listed at 45 mA typical at 9 V. This supply range should be planned together with the car radio analog supply rail, reference filtering, grounding, and audio coupling network.

What package is used by E-TDA7416?

E-TDA7416 uses a TQFP44 package with a nominal 10 mm × 10 mm body and 0.80 mm lead pitch. The 44-lead package provides separate terminals for input sources, AC-coupling paths, I²C control, spectrum analyzer interface, speaker outputs, subwoofer output, supply, ground, and reference nodes.

What are common E-TDA7416 alternatives?

Common comparison parts include TDA7419, TDA7418, and TDA7719 from STMicroelectronics. These parts are functional alternatives within car audio signal processing, but they are not direct drop-in replacements for E-TDA7416. Engineers must compare equalizer structure, spectrum analyzer behavior, I²C register control, package, pinout, and audio routing before redesigning a circuit.