TAS6584-Q1 ACTIVE Automotive 45-V, 10-A digital input, four-channel Class-D audio amplifier with current sense

Features • AEC-Q100 qualified for automotive applications 

– Temperature grade 1: –40°C to +125°C, TA • General operation 

– 4.5-V to 45-V supply voltage, 50-V load dump – Support for 1.8-V and 3.3-V I/O’s 

– I 2C control with 8 address options 

– <2-W idle power loss at 14.4 V, <8-uA max VBAT+PVDD shutdown loss • Integrated DSP processing 

– Class-H supply voltage control – Thermal monitoring and foldback – Clip detection, PVDD monitoring and foldback • Output current sensing by channel via I2S/TDM 

– No need for external circuitry • Real-time load diagnostics – Monitor output conditions while playing audio 

– Open load, Shorted load, Short-to-power, Short-to-ground detection • DC and AC Standby load diagnostics • Audio inputs – 2-4 channel I2S or 4-16 channel TDM input 

– Input sample rates: 44.1, 48, 96, 192 kHz – Secondary low latency path, >70% reduced signal delay at 48 kHz • Audio outputs – 4-channel bridge-tied load (BTL), configurable 2-channel parallel BTL (PBTL) 

– 384-kHz to 2.1-MHz configurable output switching frequency – Up to 10-A channel output current 

– 400-VA peak BTL output power – 118 W (45 V, 8 Ω, 1% THD, BTL) 

– 215 W (45 V, 4 Ω, 1% THD, BTL) • Audio Performance – THD+N 0.03% (8 Ω, 1 W, 1 kHz) 

– 111 dB SNR – 37 µV (14.4 V), 80 µV (45 V) output noise • Protection – Output short protection 

– DC offset, undervoltage and overvoltage 

– Configurable overtemperature warning and individual channel shutdown 

– I 2C temperature and supply voltage readout • Easily meet CISPR25-L5 EMC specification

The TAS6584-Q1 is a four-channel, digital-input, highvoltage, Class-D audio amplifier that supports up to 45-V supply voltage. In combination with up to 10-A output current, this device delivers maximum output power and high fidelity audio in high and low impedance loads. The device provides four channels at 118 W (45 V, 8 Ω, 1% THD, BTL) and 215 W (45 V, 4 Ω, 1% THD, BTL). The TAS6584-Q1 integrates DC and AC load diagnostics to determine the status of the connected loads before enabling the output stage. During audio playback, the status can be monitored through output current sense which is available for each channel and reports the measurement to a host processor through TDM with minimal delay. The device monitors the output load condition while playing audio using realtime load diagnostics which operate independent from host and audio input. To optimize system efficiency, the integrated DSP of the TAS6584-Q1 enables Class-H envelope tracking control, eliminating the need for development of complex tracking software and making local boost voltage control possible without the need for an external microcontroller. The TAS6584-Q1 device features an additional lowlatency signal path for each channel, providing up to 70% faster signal processing at 48 kHz which enables time-sensitive Active Noise Cancellation (ANC), Road Noise Cancellation (RNC) applications. The device is offered in a 64-pin QFP package with the exposed thermal pad up.