STMicroelectronics TDA7463D013TR

Overview

TDA7463D013TR from STMicroelectronics is a digitally controlled stereo audio processor IC for low-voltage portable systems, integrating volume, bass, treble, mute, stand-by, and bass automatic level control (ALC) functions-all programmable via I²C bus. It operates from 1.8–3 V, delivers ≤0.1% THD at 1 kHz, supports 1 dB volume steps over 63 dB range, and provides ±14 dB bass boost and ±8 dB treble boost.

For engineers reviewing the TDA7463D013TR datasheet, TDA7463D013TR pinout, TDA7463D013TR application, or TDA7463D013TR equivalent, key selection criteria include I²C-configurable ALC threshold and release timing, dual-channel independent tone control, SO16 package thermal resistance (85 °C/W), and DC stepping performance in battery-powered audio front-ends.

Technical Context

The TDA7463D013TR implements analog signal conditioning using bipolar/CMOS technology with external resistor networks and op-amp-based filtering for bass/treble shaping. Its ALC function uses a half-wave rectifier and programmable attack/release resistors (12.5–100 kΩ) and thresholds (0.07–0.2 Vrms) to dynamically adjust bass gain based on input amplitude.

All digital control-including volume (−63 to 0 dB), bass (0 to +14 dB), treble (0 to +8 dB), mute (≥80 dB attenuation), and stand-by-is handled by an integrated I²C decoder/latch with dedicated SCL/SDA pins. The device maintains <5 µV output noise (20 Hz–20 kHz) and 80 dB channel separation under flat-gain conditions.

Key Specifications

Pinout & Package

Package: SO16 wide-body surface-mount (10.1 × 7.5 mm, 1.27 mm pitch), JEDEC MS-013AC compliant, with thermal resistance R_{th j-pin} = 85 °C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CS42L52-CNZR and MAX9850ETJ+, the TDA7463D013TR uniquely combines sub-3 V operation, full stereo tone control, and adaptive bass ALC in a compact SO16 package-making it optimal for space-constrained, battery-sensitive portable audio where analog EQ flexibility is critical.

Availability

TDA7463D013TR is available at Aetrix Electronics and suitable for portable media players, Bluetooth speaker systems, USB-C audio adapters, and smart headphone amplifiers requiring stable component supply and long-term design-in support.

Supply support for TDA7463D013TR 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, MEMS, and power devices for automotive, industrial, and consumer markets.

The TDA7463D013TR belongs to ST's audio signal processor product line, engineered specifically for low-voltage, high-fidelity portable audio applications where programmable analog tone control and ultra-low power consumption are essential.

FAQ

What is the minimum supply voltage required for reliable operation of the TDA7463D013TR?

The TDA7463D013TR operates reliably down to 1.8 V, as confirmed by absolute maximum ratings and electrical characteristics tables. At 1.8 V, it maintains full functionality including I²C communication, ALC operation, and 1 dB volume steps-enabling direct use with single-cell lithium polymer batteries without voltage boosting.

How does the ALC function interact with the bass boost setting?

The ALC dynamically adjusts bass gain based on input signal level using a half-wave rectifier and programmable threshold/resistor network. When enabled, it overrides static bass boost settings-reducing gain at high input levels to prevent clipping while preserving boost at low levels. Configuration is done via the ALC pin voltage and internal register bits controlling attack/release timing.

Can the TDA7463D013TR drive headphones directly?

No, the TDA7463D013TR is not a headphone amplifier-it is a line-level audio processor with 10 kΩ output load capability and 0.2 Vrms clipping level. It requires an external headphone driver (e.g., TPA6130A2 or MAX4410) to deliver sufficient current and voltage swing for 16–32 Ω headphones.

Is there a recommended layout practice for the CREF pin?

Yes: a 100 nF ceramic capacitor must be placed within 2 mm of the CREF pin and connected directly to analog ground. This capacitor stabilizes the internal ALC bias current generator; longer traces or shared ground paths cause ALC timing inaccuracy and increased THD at low frequencies.