Overview
The TAS5421-Q1 is a mono analog-input audio amplifier designed for use in the automotive environment. Developed by Texas Instruments, this device utilizes ultra-efficient class-D technology, which reduces power consumption, heat generation, and peak currents in the electrical system. This makes it ideal for applications requiring smaller size and lower weight compared to traditional class-AB solutions. The amplifier is qualified according to AEC-Q100 Grade 2 and is ISO9000: 2002 TS16949 certified, ensuring high reliability and compliance with automotive EMC requirements.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Output Power | At 10% THD+N into 4 Ω | 22 W |
| Operating Voltage Range | 4.5 V to 18 V | |
| Efficiency | Into 4 Ω at 8 W (10% THD) | High efficiency (similar to TAS5411-Q1) |
| Power-Supply Rejection Ratio (PSRR) | 75 dB | |
| Load Diagnostic Functions | Open and shorted output load, output-to-power and output-to-ground shorts | Supported |
| Protection and Monitoring Functions | Short-circuit protection, 40-V load dump protection per ISO-7637-2, overtemperature protection, overvoltage and undervoltage protection | Supported |
| Package | Thermally enhanced 16-pin HTSSOP (PWP) with PowerPAD™ | |
| Operating Temperature Range | -40°C to 125°C |
Key Features
- Mono BTL digital power amplifier
- Ultra-efficient class-D technology for reduced power consumption and heat generation
- Differential analog input with common-mode noise cancellation
- Load diagnostic functions including open and shorted output load detection
- Protection and monitoring functions such as short-circuit protection, 40-V load dump protection, overtemperature protection, and over/undervoltage protection
- Output DC level detection while music is playing
- I2C serial communication bus for diagnostics and control
- Thermally enhanced 16-pin HTSSOP (PWP) package with PowerPAD™
Applications
- Automotive emergency call (eCall) amplifiers
- Telematics systems
- Instrument cluster systems
- Infotainment audio systems
Q & A
- What is the output power of the TAS5421-Q1?
The TAS5421-Q1 delivers up to 22 W of output power at 10% THD+N into a 4 Ω load.
- What is the operating voltage range of the TAS5421-Q1?
The operating voltage range is from 4.5 V to 18 V.
- What kind of protection features does the TAS5421-Q1 have?
The device includes short-circuit protection, 40-V load dump protection per ISO-7637-2, overtemperature protection, and over/undervoltage protection.
- What is the package type of the TAS5421-Q1?
The device is packaged in a thermally enhanced 16-pin HTSSOP (PWP) with PowerPAD™.
- What are the key diagnostic functions of the TAS5421-Q1?
The device includes load diagnostic functions such as open and shorted output load detection, and output-to-power and output-to-ground shorts detection.
- What is the operating temperature range of the TAS5421-Q1?
The operating temperature range is from -40°C to 125°C.
- Is the TAS5421-Q1 compliant with automotive standards?
Yes, it is qualified according to AEC-Q100 Grade 2 and is ISO9000: 2002 TS16949 certified.
- What type of communication interface does the TAS5421-Q1 use?
The device uses an I2C serial communication bus for diagnostics and control.
- What are some typical applications of the TAS5421-Q1?
Typical applications include automotive emergency call (eCall) amplifiers, telematics systems, instrument cluster systems, and infotainment audio systems.
- How does the TAS5421-Q1 handle common-mode noise?
The differential input stage of the amplifier cancels common-mode noise that appears on the inputs.
