The TAS6422-Q1 device is a Two-channel digital-input Class-D audio amplifier designed for use in automotive head units and external amplifier modules. The device provides two channels at 27 W into 4 Ω at 10% THD+N and 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. The Class-D topology dramatically improves efficiency over traditional linear amplifier solutions. The output switching frequency can be set either above the AM band, which eliminates the AM-band interference and reduces output filtering and cost, or below AM band to optimize efficiency.
The wide supply-voltage range from 4.5 V to 26.4 V helps minimize audio artefacts in start-stop applications
The device incorporates all the functionality required to perform in the demanding OEM applications area. The device has a built-in load diagnostic function for detecting and diagnosing misconnected outputs as well as detection AC-coupled tweeters to help to reduce test time during the manufacturing process.
The device is offered in a 56-pin HSSOP PowerPAD™ package with the exposed thermal pad up.
For a pin compatible four-channel devices see the TAS6424-Q1 device.
|Part number||Order||Audio input type||Architecture||Speaker channels (Max)||Power stage supply (Min) (V)||Power stage supply (Max) (V)||Output power (W)||Load (Min) (ohms)||THD + N @ 1 kHz (%)||Iq (Typ) (mA)||Control interface||Closed/open loop||Analog supply (Min) (V)||Analog supply (Max) (V)||Power to parallel bridge tied load (Max) (W)||Sampling rate (Max) (kHz)||PSRR (dB)||Operating temperature range (C)||Rating|
||Digital Input||Class-D||Stereo||4.5||26.4||75||2||0.03||120||I2C||Closed||4.5||26.4||150||96||75||-40 to 125||Automotive|
||Digital Input||Class-D||Mono||4.5||26.4||75||2||0.02||47||I2C||Closed||4.5||26.4||96||75||-40 to 125||Automotive|
||Digital Input||Class-D||4||4.5||26.4||75||1||0.02||165||I2C||Closed||4.5||26.4||150||96||75||-40 to 125||Automotive|
||Digital Input||Class-D||4||4.5||18||27||2||0.03||165||I2C||Closed||4.5||18||70||96||70||-40 to 125||Automotive|