TAS2564 7W digital input smart amp with <10uV noise and integrated 13-V Class-H boost | TI.com

TAS2564
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7W digital input smart amp with <10uV noise and integrated 13-V Class-H boost

 

Sample Availability

Preproduction samples are available (PTAS2564YBGR). Request now

Description

The TAS2564 is a digital input Class-D audio amplifier optimized for efficiently driving high peak power into small loudspeaker applications. The Class-D amplifier is capable of delivering 7 W of peak power into a 8 Ω load at a battery voltage of 3.6 V.

Integrated speaker voltage and current sense provides for real time monitoring of the loudspeakers. This permits pushing peak SPL while keeping speakers in the safe operation area. A battery tracking peak voltage limiter with brown-out prevention optimizes amplifier headroom over the entire charge cycle preventing system shutdowns.

Up to four devices can share a common bus via I2S/TDM + I2C interfaces.

The TAS2564 device is available in a 36-ball, 0.4 mm pitch DSBGA (YBG) for a compact PCB footprint.

Features

  • High performance Class-D amplifier
    • 7-W 1% THD+N (8 Ω at 3.6 V)
  • 9.5-µVrms A-weighted idle channel noise Receiver
  • 16-µVrms A-weighted idle channel noise Speaker
  • 256 Level class-H boost for real time signal tracking.
  • 110 dB SNR at 1% THD+N (8 Ω)
  • 100 dB PSRR with 200-mVPP ripple at 20 Hz to 20 kHz
  • 83.5% Efficiency at 1 W (8 Ω, VBAT = 4.2 V)
  • < 1-µA HW Shutdown VBAT current
  • Speaker current and voltage sense
  • DC Detection and prevention
  • VBAT Tracking peak voltage limiter with brown-out prevention
  • 16-kHz to 192-kHz Sample rates
  • Flexible user interfaces
    • I2S/TDM: 8 Channels (32 bit / 96 kHz)
    • I2C: 4 Selectable addresses
  • MCLK Free operation
  • Advanced brown-out prevention
  • Power supplies
    • VBAT: 2.7 V to 5.5 V
    • VDD: 1.65 V to 1.95 V
  • Spread-spectrum low EMI mode
  • Thermal and overcurrent protection
  • 36-Ball, 0.4 mm pitch, DSBGA package

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Parametrics

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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) SNR (dB) THD + N @ 1 kHz (%) Iq (Typ) (mA) Control interface Closed/open loop Analog supply (Min) (V) Analog supply (Max) (V) Sampling rate (Max) (kHz) PSRR (dB) Operating temperature range (C) Rating
TAS2564 Order now Digital Input     Class-D Boosted
Smart Amp    
Mono     2.7     5.5     8     3.2     110     0.01     2.7     I2C     Closed     2.7     5.5       100     -40 to 85     Catalog    
TAS2560 Order now Digital Input     Class-D Boosted
Smart Amp    
Mono     2.7     5.5     5.6     4     111     0.004     3.2     I2C     Closed     2.9     5.5     96     110     -40 to 85     Catalog    
TAS2562 Order now Digital Input     Class-D Boosted
Smart Amp    
Mono     2.7     5.5     6     3.2     112.5     0.004     3.2     I2C     Closed     2.7     5.5       100     -40 to 85     Catalog