Overview
The TAS6422EQDKQRQ1 is a 45-W, 2-MHz digital input 2-channel Class-D audio amplifier designed by Texas Instruments for automotive applications. This device is AEC-Q100 qualified, ensuring it meets the stringent requirements for automotive use, with a temperature range of –40°C to +125°C. It offers exceptional sound quality with up to 40 kHz audio bandwidth and advanced load diagnostics, making it an ideal choice for automotive head units and external amplifier modules.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| DC Supply Voltage (PVDD, VBAT) | -0.3 | 30 | V | |
| Ambient Temperature (TA) | -40 | 125 | °C | |
| Junction Temperature (TJ) | -40 | 150 | °C | |
| Minimum Speaker Load Impedance (RL) | 2 | 4 | Ω | |
| Output Power per Channel (PBTL Mode, 2 Ω, THD+N = 1%) | 35 | 40 | W | |
| THD+N at 1 W into 4 Ω | < 0.02% | % | ||
| Output Noise (VRMS) | 42 | µV | ||
| Crosstalk | -90 | dB | ||
| Switching Frequency (fSW) | 2.1 | MHz |
Key Features
- Advanced Load Diagnostics: Detects output open and shorted loads, output-to-battery or ground shorts, and line output detection up to 6 kΩ.
- Protection Features: Includes output current limiting and short protection, 40 V load dump, open ground and power tolerance, DC offset, over-temperature, undervoltage, and overvoltage protection.
- EMI Management: Enhanced EMI management with spread-spectrum to assist in system-level EMI challenges.
- I2C Control: Supports I2C control with 4 address options and latched & non-latched clip detect.
- Supply Voltage Range: Operates from 4.5 V to 18 V supply voltage.
- Host-Independent Operation: Functions independently of the host system.
Applications
- Automotive Head Units: Ideal for use in automotive head units due to its compact size and high performance.
- Automotive External Amplifier Modules: Suitable for external amplifier modules in vehicles.
Q & A
- What is the operating temperature range of the TAS6422EQDKQRQ1?
The operating temperature range is –40°C to +125°C.
- What is the maximum output power per channel in PBTL mode?
The maximum output power per channel in PBTL mode is up to 45 W at 2 Ω with THD+N = 10%.
- What are the key protection features of the TAS6422EQDKQRQ1?
The device includes output current limiting and short protection, 40 V load dump, open ground and power tolerance, DC offset, over-temperature, undervoltage, and overvoltage protection.
- How does the TAS6422EQDKQRQ1 manage EMI?
The device features enhanced EMI management with spread-spectrum to assist in system-level EMI challenges.
- What is the switching frequency of the TAS6422EQDKQRQ1?
The switching frequency is 2.1 MHz.
- What is the minimum speaker load impedance supported by the TAS6422EQDKQRQ1?
The minimum speaker load impedance is 2 Ω.
- Does the TAS6422EQDKQRQ1 support I2C control?
Yes, it supports I2C control with 4 address options.
- What is the supply voltage range for the TAS6422EQDKQRQ1?
The supply voltage range is from 4.5 V to 18 V.
- Is the TAS6422EQDKQRQ1 AEC-Q100 qualified?
Yes, it is AEC-Q100 qualified for automotive applications.
- What are the typical applications of the TAS6422EQDKQRQ1?
The typical applications include automotive head units and external amplifier modules.
