TAS2559 5.7-W Class-D Mono Audio Amplifier with Class-H Boost, Speaker Sense and Stereo Processing | TI.com

TAS2559 (ACTIVE)

5.7-W Class-D Mono Audio Amplifier with Class-H Boost, Speaker Sense and Stereo Processing

5.7-W Class-D Mono Audio Amplifier with Class-H Boost, Speaker Sense and Stereo Processing - TAS2559
 

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

To request access to PurePath™ Console 3 and other design resources: Request TAS2559

Description

The TAS2559 device is a state-of-the-art Class-D audio amplifier which is a full system on a Chip (SoC). The device features a ultra low-noise audio DAC and Class-D power amplifier which incorporates speaker voltage and current sensing feedback. An on-chip, low-latency DSP supports Texas Instruments SmartAmp speaker protection algorithms to maximizes loudness while maintaining safe speaker conditions.

The device can be used easily with any processor with an I2S output and stereo implementations are possible when using two TAS2559 devices. Separate tuning for different speakers is supported allowing customers to add value while maintaining form factor designs. Additionally, the TAS2559 supports separate voice and audio tuning dynamically with ultra-low 15.9 µV ICN regardless of mode of operation making receiver/speaker implementations possible.

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

Features

  • Ultra Low-Noise Mono Boosted Class-D Amplifier
    • 5.7 W at 1% THD+N and 6.9 W at 10% THD+N into 4-Ω Load from 4.2-V Supply
    • 3.8 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 15.9 µV
  • DAC + Class-D SNR 111 dB at 1%THD+N/8 Ω
  • THD+N –90 dB at 1 W / 8 Ω with Flat Frequency Response
  • PSRR 110 dB for 200 mVpp ripple at 217 Hz
  • Input Sample Rates from 8 kHz to 96 kHz
  • Built-In Speaker Sense
    • Measures Speaker Current and Voltage
    • Measures VBAT Voltage, Chip Temperature
  • Dedicated Real-Time DSP for Speaker Protection
    • Thermal and Excursion Protection
    • Detects Speaker Leaks and Damage
  • High Efficiency Class-H Boost Converter With Multi-Level Tracking
    • 86% at 500 mW in 8 Ω with 3.6 V VBAT
    • 87% at 700 mW in 8 Ω with 4.2 V VBAT
  • Configurable Automatic Gain Control (AGC)
    • Limits Battery Current Consumption
  • Adjustable Class-D Switching Edge-Rate Control
  • Thermal, Short-Circuit, and Under-Voltage Protection
  • I2S, Left-Justified, Right-Justified, DSP, and TDM Input and Output Interface,
  • I2C or SPI Interface for Register Control
  • Stereo Configuration Using the TAS2559 and TAS2560 devices
  • 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
  • 42-ball, 0.5-mm pitch, DSBGA package

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Parametrics Compare all products in Speaker Amps

 
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 (V) (Min)
Analog Supply (V) (Max)
PSRR (dB)
Operating Temperature Range (C)
Rating
TAS2559 TAS2552 TAS2553 TAS2555 TAS2557 TAS2560 TAS2770 TPA2015D1
Digital Input     Analog Input
Digital Input    
Analog Input
Digital Input    
Digital Input     Digital Input     Digital Input     Digital Input     Analog Input    
Class-D Boosted
Smart Amp    
Class-D Boosted
Smart Amp    
Class-D Boosted     Class-D Boosted
Smart Amp    
Class-D Boosted
Smart Amp    
Class-D Boosted
Smart Amp    
Smart Amp     Class-D Boosted    
Mono     Mono     Mono     Mono     Mono     Mono     Mono     Mono    
2.7     2.7     2.7     2.7     2.7     2.7     4.5     2.3    
5.5     5.5     5.5     5.5     5.5     5.5     16     5.2    
5.7     4     2.8     5.7     5.7     5.6     20     2    
4     6     6     4     4     4     4     8    
111     94     94     111     111     111     108     95    
0.0035     0.1     0.9     0.02     0.0035     0.004     0.007     0.07    
3.9     6.54     7.1     3     3.9     3.2     7.07     1.7    
I2C
SPI    
I2C     I2C     I2C
SPI    
I2C
SPI    
I2C     I2C     GPIO    
Closed     Closed     Closed     Closed     Closed     Closed     Closed     Closed    
2.9     2.7     2.7     2.95     2.9     2.9     4.5     2.3    
5.5     5.5     5.5     5.5     5.5     5.5     16     5.2    
110     75     75     110     110     110     90     85    
-40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85    
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