TAS6422Q1EVM: 75W x 2 @ 4Ω, Digital Input, w/I2C Diagnostics, Class-D, 2.1Mhz
Summary
The TAS6422Q1EVM showcases the first true 2.1Mhz 2-Ch Digital Input Class-D Audio Solution for Automotive Infotainment in the market. TAS6422’s 2.1-Mhz switching frequency allows customers to significantly reduce inductor size and cost and optimize total system cost. TAS6422 delivers 25W (10% THD+N) per channel into 4-Ω with a 14.4-V supply. TAS6422’s wide supply voltage capabilities, from 4.5-V to 26-V, makes it ideal for head unit and external amplifier systems while delivering top-of-the-line performance during start-stop low voltage transient events. TAS6422 integrates I2C diagnostics and protection to match and surpass the highest standards for automotive quality and reliability. TAS6422 CISPR25-L5 compliant EMC performance simplifies system design, lowers development cost and accelerates time-to-market delivery.
TAS6422 EVM features: Optical SPDIF, USB and PSIA (external I2S) input options and On-board USB-I2C controller for GUI driven EVM evaluation.
Features:
2.1-Mhz switching frequency
2-Ch 25-W/Ch at 10% THD+N into 4-Ω with a 14.4-V supply
I2C diagnostics and protection
CISPR25, class 5 radiated/conducted emission compliant
Optical SPDIF, USB and PSIA (external I2S) input options
Specifications
| Manufacturer | Texas Instruments |
|---|---|
| Category | Audio Amplifiers |
| Eval Board Part Number | 296-48279-ND |
| Eval Board Supplier | Texas Instruments |
| Eval Board |
Normally In Stock
|
| Amplifier Type |
Class D
|
| Number of Outputs |
Stereo
|
| Output Power (RMS) @ Load |
25 W x 2 @ 4 Ω
|
| Voltage In |
4.5 ~ 26.4 V
|
| THD+N (1kHz) @ Conditions |
< 0.09% @ 12 mW ~ 40 W (4 Ω, 24 V, 384 kHz)
< 0.06% @ 15 mW ~ 45 W (4 Ω, 24 V, 2.1 MHz) < 0.03% @ 50 mW ~ 18 W (4 Ω, 14.4 V, 2.1 MHz) < 0.02% @ 150 mW ~ 15 W (4 Ω, 14.4 V, 384 kHz) |
| Features |
Current Limit (Adj. or Fixed)
Over Voltage Protection PWM Interface Short Circuit Protection Thermal Protection Under Voltage Protection, Brown-Out |
| Efficiency @ Conditions |
>85%, 24 V in, 4 Ω @ 25 ~ 80 W (384 kHz)
>75%, 24 V in, 4 Ω @ 30 ~ 100 W (2.1 MHz) >75%, 14.4 V in, 2 Ω @ 7 ~ 80 W (384 kHz) >65%, 14.4 V in, 2 Ω @ 7 ~ 80 W (2.1 MHz) |
| Standby Current [Typical] |
1 µA
|
| Quiescent Current [Typical] |
36 mA
|
| Component Count + Extras |
125 + 28
|
| Application / Target Market |
Automotive
|
| Design Author |
Texas Instruments
|
| Main I.C. Base Part |
TAS6422
|
| Quiescent Current [Maximum] |
45 mA
|
| Standby Current [Maximum] |
2 µA
|
| Date Created By Author | 2017-10 |
| Date Added To Library | 2025-06 |
