TAS2560 5.6W Digital Input Smart Amp with I/V Sense for Speaker Protection and Integrated 8.5V Class-H Boost | TI.com

TAS2560 (ACTIVE) 5.6W Digital Input Smart Amp with I/V Sense for Speaker Protection and Integrated 8.5V Class-H Boost

 

Combine TAS2560 and TAS2559 for a complete stereo solution with real-time I/V sense based protection. View TAS2559 now.

To request access to PurePath™ Console 3 and other design resources: Request TAS2560

Description

The TAS2560 is a low-power, high-performance, digital input, boosted Class-D Audio amplifier that can be easily implemented in both mono and stereo (x2) applications. The device features an ultra low-noise audio DAC and Class-D power amplifier which incorporates speaker voltage and current sensing feedback for use with speaker protection algorithms.

A Class-H boost converter generates the Class-D amplifier supply rail. When the audio signal requires only a lower Class-D output power, system efficiency is improved by deactivating the boost and connecting VBAT directly to the Class-D amplifier supply. When higher audio output power is required, the multi-level boost re-activates tracking the signal to provide the additional voltage to the load.

A configurable on-chip Battery Guard system reduces the audio output power during the periods of low battery voltage to minimize the battery dropping below system brownout conditions. Additionally, faults such as brownout, over-current, and over-temperature can be reported back to the host processor using the IRQ pin. All protection statuses are available via a register read.

Features

  • Ultra Low-Noise Mono Boosted Class-D Amplifier
    • 5.6 W at 1% THD+N and 6.9 W at 10% THD+N into 4-Ω Load from 4.2-V Supply
    • 3.7 W at 1% THD+N and 4.5 W at 10% THD+N into 8-Ω Load from 4.2-V Supply
  • Output Noise for DAC + Class-D(ICN) is 16.2 µV
  • DAC + Class-D SNR 111 dB at 1%THD+N / 8 Ω
  • THD+N –89 dB at 1 W / 8 Ω with Flat Frequency Response
  • Post-Filter Feedback (PFFB)
  • PSRR 110 dB for 200 mVpp Ripple at 217 Hz
  • Input Sample Rates from 8 kHz to 96 kHz
  • High Efficiency Class-H Boost Converter
    • Automatically Adjusts Class-D Supply
    • Multi-level Tracking to Improve Efficiency
  • Built-In Speaker Sense
    • Measures Speaker Current and Voltage
    • Measures VBAT Voltage, Chip Temperature
  • Built-In Automatic Gain Control (AGC)
    • Limits Battery Current Consumption
  • Adjustable Class-D Switching Edge-Rate Control
  • Power Supplies
    • Boost Input: 2.9 V to 5.5 V
    • Analog/Digital: 1.65 V to 1.95 V
    • Digital I/O: 1.62 V to 3.6 V
  • Thermal, Short-Circuit, and Under-Voltage Protection
  • I2S, Left-Justified, Right-Justified, DSP, and TDM, and PDM
  • I2C Interface for Register Control
  • Stereo Configuration Using Two TAS2560 Devices

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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
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    
TAS2552 Order now Analog Input
Digital Input    
Class-D Boosted
Smart Amp    
Mono     2.7     5.5     4     6     94     0.1     6.54     I2C     Closed     2.7     5.5     192     75     -40 to 85     Catalog    
TAS2553 Order now Analog Input
Digital Input    
Class-D Boosted     Mono     2.7     5.5     2.8     6     94     0.9     7.1     I2C     Closed     2.7     5.5     192     75     -40 to 85     Catalog    
TAS2555 Samples not available Digital Input     Class-D Boosted
Smart Amp    
Mono     2.7     5.5     5.7     4     111     0.02     3     I2C
SPI    
Closed     2.95     5.5     96     110     -40 to 85     Catalog    
TAS2557 Order now Digital Input     Class-D Boosted
Smart Amp    
Mono     2.7     5.5     5.7     4     111     0.0035     3.9