Overview
The TAS6424-Q1 is a four-channel digital-input Class-D audio amplifier designed by Texas Instruments for use in automotive environments. This device is optimized for cost and size, offering full operation down to 4.5 V, which is particularly beneficial for start/stop events in vehicles. It features a 2.1 MHz PWM switching frequency, ensuring exceptional sound quality with up to 40 kHz audio bandwidth. The amplifier is packaged in a 56-pin HSSOP PowerPAD™ package, which includes an exposed thermal pad for enhanced thermal management.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 4 | |
| Amplifier Class | Class-D | |
| Package Type | HSSOP (56 pins) | |
| Operating Temperature Range | -40 to 125 | °C |
| Output Power (4 Ω, 10% THD+N, 14.4 V) | 27 W | |
| Output Power (2 Ω, 10% THD+N, 14.4 V) | 45 W | |
| Output Power (4 Ω, 10% THD+N, 25 V) | 75 W | |
| Input Sample Rates | 44.1 kHz, 48 kHz, 96 kHz | |
| Input Formats | 16-bit to 32-bit I2S, TDM | |
| Output Switching Frequency | Up to 2.1 MHz | |
| Audio Bandwidth | Up to 40 kHz |
Key Features
- Advanced Load Diagnostics: Runs without input clocks and includes AC diagnostic for tweeter detection with impedance and phase response.
- EMC Compliance: Easy to meet CISPR25-L5 EMC specification.
- Automotive Qualification: Qualified for automotive applications.
- Audio Inputs: Supports 4-channel I2S or 4/8-channel TDM input.
- Audio Outputs: Four-channel bridge-tied load (BTL) with the option of parallel BTL (PBTL).
- Thermal and Overtemperature Protection: Includes channel overtemperature warning and shutdown, and global junction overtemperature warning and shutdown.
- I2C Diagnostics: Supports I2C interface for diagnostics and control.
Applications
- Automotive Head Units: Ideal for use in the audio systems of automotive head units.
- Automotive External Amplifier Modules: Suitable for external amplifier modules in vehicles.
Q & A
- What is the TAS6424-Q1 device?
The TAS6424-Q1 is a four-channel digital-input Class-D audio amplifier designed for automotive applications. - What is the output power of the TAS6424-Q1?
The output power is 27 W into 4 Ω at 10% THD+N from a 14.4-V supply, 45 W into 2 Ω at 10% THD+N from a 14.4-V supply, and 75 W into 4 Ω at 10% THD+N from a 25-V supply. - What are the supported input sample rates?
The device supports input sample rates of 44.1 kHz, 48 kHz, and 96 kHz. - What are the supported input formats?
The device supports 16-bit to 32-bit I2S and TDM input formats. - What is the output switching frequency?
The output switching frequency can be set up to 2.1 MHz. - Does the TAS6424-Q1 have thermal protection?
Yes, it includes channel overtemperature warning and shutdown, and global junction overtemperature warning and shutdown. - What is the operating temperature range of the TAS6424-Q1?
The operating temperature range is -40°C to 125°C. - What package type is the TAS6424-Q1 available in?
The device is available in a 56-pin HSSOP PowerPAD™ package. - Does the TAS6424-Q1 support I2C diagnostics?
Yes, it supports I2C interface for diagnostics and control. - What are the typical applications of the TAS6424-Q1?
The typical applications include automotive head units and external amplifier modules.
