TAS6754-Q1中文资料德州仪器数据手册PDF规格书

1 Features

• AEC-Q100 qualified for Automotive applications

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

• General operation

– 4.5V to 19V supply voltage, 40V load dump

– Low latency path reducing group delay by

>70% at 48kHz

– Support for 1.8V and 3.3V I/O’s

– I2C control with 8 address options

• 1L Modulation

– Requires only one inductor per channel saving

four inductors vs a traditional solution

– Lower system component cost for inductors

– Smaller PCB footprint

• Audio Performance

– THD+N 0.05% (4Ω, 1W, 1kHz)

– Output noise: 35μVRMS at 14.4V, A-weighting

– Efficiency > 87% @ 4×25W, 4 Ω, 14.4V

• Output current sensing by channel via I2S or TDM

– No external circuitry needed

• Real-time load diagnostics

– Monitor output conditions while playing audio

– Open Load , Shorted load, Short-to-power, and

Short-to-ground detection

• DC and AC Standby load diagnostics

• Audio inputs

– 2-4 channel via I2S or 4-16 channel via TDM

– Input sample rates: 44.1, 48, 96, 192 kHz

• Audio outputs

– 4 channel bridge-tied load (BTL)

– 2MHz output switching frequency

– 4×30W (4 Ω, 14.4V, 1kHz 10% THD+N)

– 4×50W (2 Ω, 14.4V, 1kHz 10% THD+N)

• Advanced spread-spectrum and selectable phase

offset

• Protection and Monitoring

– Cycle-by-cycle current limiting

– Output short protection

– Clip detection with configurable thresholds

– Thermal foldback and PVDD foldback

– I2C temperature and supply voltage readout

– Configurable overtemperature warning and

individual channel shutdown

– DC offset, undervoltage and overvoltage

2 Applications

• Automotive head unit

• Automotive external amplifier

• Acoustic vehicle alerting system (AVAS)

3 Description

The TAS6754-Q1 is a four-channel digital-input Class-

D audio amplifier that implements 1L modulation only

requiring one inductor per BTL channel reducing

system size and cost by removing four inductors

compared to a traditional solution. Additionally, 1L

modulation lowers switching losses compared to

traditional Class-D modulation schemes.

The TAS6754-Q1 integrates DC and AC Load

Diagnostics to determine the status of the connected

loads. During audio playback this 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 through real-time load

diagnostics independent of the host and audio input.

The TAS6754-Q1 device features an additional low

latency signal path for each channel, providing up to

70% faster signal processing at 48kHz which enables

time-sensitive Active Noise Cancellation (ANC), Road

Noise Cancellation (RNC) applications.

The device supports global temperature, channel

temperature and PVDD values via I2C readout for

easy system level thermal management.

The device is offered in a 56 pin HSSOP package

with the exposed thermal pad up.