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TAS6684-Q1

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Automotive, 45V, 13A, digital input, four-channel Class-D audio amplifier with current sense

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Data sheet

TAS6684-Q1

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Product details

Audio input type Digital Input Architecture Class-D Speaker channels (max) 4 Rating Automotive Power stage supply (max) (V) 45 Power stage supply (min) (V) 4.5 Load (min) (Ω) 2 Output power (W) 215 SNR (dB) 111 THD + N at 1 kHz (%) 0.03 Iq (typ) (mA) 120 Control interface I2C Closed/open loop Closed Analog supply (min) (V) 4.5 Analog supply voltage (max) (V) 45 Sampling rate (max) (kHz) 192 PSRR (dB) 75 Operating temperature range (°C) -40 to 125
Audio input type Digital Input Architecture Class-D Speaker channels (max) 4 Rating Automotive Power stage supply (max) (V) 45 Power stage supply (min) (V) 4.5 Load (min) (Ω) 2 Output power (W) 215 SNR (dB) 111 THD + N at 1 kHz (%) 0.03 Iq (typ) (mA) 120 Control interface I2C Closed/open loop Closed Analog supply (min) (V) 4.5 Analog supply voltage (max) (V) 45 Sampling rate (max) (kHz) 192 PSRR (dB) 75 Operating temperature range (°C) -40 to 125
HTQFP (PHD) 64 256 mm² 16 x 16
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +125°C, TA
  • General operation
    • 4.5V to 45V supply voltage, 50V load dump
    • Support for 1.8V and 3.3V I/O’s
    • I2C control with 8 address options
    • <2-W idle power loss at 14.4V, <8uA 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
    • Real-time temperature monitor for each channel
    • 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, 192kHz
    • Low latency support < 100us at 96k sample rate
  • Audio outputs
    • 4-channel bridge-tied load (BTL), configurable 2-channel parallel BTL (PBTL)
    • 384kHz to 2MHz configurable output switching frequency
    • Up to 13A channel output current
    • 400VA peak BTL output power
    • 118W (45V, 8Ω, 1% THD, BTL)
    • 215W (45V, 4Ω, 1% THD, BTL)
  • Audio Performance
    • THD+N 0.03% (8Ω, 1W, 1kHz)
    • 111dB SNR
    • 37µV (14.4V), 80µV (45V) output noise
  • Protection
    • Output short protection
    • DC offset, undervoltage and overvoltage
    • Configurable overtemperature warning and individual channel shutdown
    • I2C temperature and supply voltage readout
  • Easily meet CISPR25-L5 EMC specification
    • Advanced spread-spectrum
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +125°C, TA
  • General operation
    • 4.5V to 45V supply voltage, 50V load dump
    • Support for 1.8V and 3.3V I/O’s
    • I2C control with 8 address options
    • <2-W idle power loss at 14.4V, <8uA 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
    • Real-time temperature monitor for each channel
    • 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, 192kHz
    • Low latency support < 100us at 96k sample rate
  • Audio outputs
    • 4-channel bridge-tied load (BTL), configurable 2-channel parallel BTL (PBTL)
    • 384kHz to 2MHz configurable output switching frequency
    • Up to 13A channel output current
    • 400VA peak BTL output power
    • 118W (45V, 8Ω, 1% THD, BTL)
    • 215W (45V, 4Ω, 1% THD, BTL)
  • Audio Performance
    • THD+N 0.03% (8Ω, 1W, 1kHz)
    • 111dB SNR
    • 37µV (14.4V), 80µV (45V) output noise
  • Protection
    • Output short protection
    • DC offset, undervoltage and overvoltage
    • Configurable overtemperature warning and individual channel shutdown
    • I2C temperature and supply voltage readout
  • Easily meet CISPR25-L5 EMC specification
    • Advanced spread-spectrum

The TAS6684-Q1 is a four-channel, digital-input, high-voltage, Class-D audio amplifier that supports up to 45V supply voltage. When combined with up to 13A output current, this device delivers maximum output power and high fidelity audio in high and low impedance loads. The device provides four channels at 118W (45V, 8Ω, 1% THD, BTL) and 215W (45V, 4Ω, 1% THD, BTL).

The TAS6684-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 and temperature of each channel 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 real-time load diagnostics which operate independently from the host and audio input.

To optimize system efficiency, the integrated DSP of the TAS6684-Q1 enables Class-H envelope tracking control, eliminating the need for the development of complex tracking software and making local boost voltage control possible without the need for an external microcontroller.

The TAS6684-Q1 device features an additional low-latency signal path for each channel, providing up to 70% faster signal processing at 48kHz and support latency < 100us of audio signal path at 96kHz sample rate, which enables time-sensitive Active Noise Cancellation (ANC), Road Noise Cancellation (RNC) applications.

The TAS6684-Q1 is offered in a 64-pin QFP package with the exposed thermal pad up, which package is pin-to-pin compatible with TAS6584-Q1.

The TAS6684-Q1 is a four-channel, digital-input, high-voltage, Class-D audio amplifier that supports up to 45V supply voltage. When combined with up to 13A output current, this device delivers maximum output power and high fidelity audio in high and low impedance loads. The device provides four channels at 118W (45V, 8Ω, 1% THD, BTL) and 215W (45V, 4Ω, 1% THD, BTL).

The TAS6684-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 and temperature of each channel 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 real-time load diagnostics which operate independently from the host and audio input.

To optimize system efficiency, the integrated DSP of the TAS6684-Q1 enables Class-H envelope tracking control, eliminating the need for the development of complex tracking software and making local boost voltage control possible without the need for an external microcontroller.

The TAS6684-Q1 device features an additional low-latency signal path for each channel, providing up to 70% faster signal processing at 48kHz and support latency < 100us of audio signal path at 96kHz sample rate, which enables time-sensitive Active Noise Cancellation (ANC), Road Noise Cancellation (RNC) applications.

The TAS6684-Q1 is offered in a 64-pin QFP package with the exposed thermal pad up, which package is pin-to-pin compatible with TAS6584-Q1.
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* Data sheet TAS6684-Q1 - 45V​​​, 13A Digital Input 4-Channel Automotive Class-D Audio Amplifier with Current Sense and Real-time Load Diagnostics datasheet PDF | HTML 29 Jul 2024

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