TAS2770 20W Digital Input Smart Amp with I/V Sense for Speaker Protection and 4.5-18V Supply Voltage Range | TI.com

TAS2770 (ACTIVE) 20W Digital Input Smart Amp with I/V Sense for Speaker Protection and 4.5-18V Supply Voltage Range

20W Digital Input Smart Amp with I/V Sense for Speaker Protection and 4.5-18V Supply Voltage Range - TAS2770
Datasheet
TAS2770 20-W Digital Input Mono Class-D Audio Amplifier with Speaker I/V Sense datasheet (Rev. B)
 

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Description

The TAS2770 is a mono, digital input Class-D audio amplifier optimized for efficiently driving high peak power into small loudspeakers. The Class-D amplifier is capable of delivering 15.4 W of peak power into a 4-Ω load while sustaining 11.6 W continuously with less than 0.03 % THD+N at a battery voltage of 12.6 V.

Integrated speaker voltage and current sense provides for real time monitoring of loudspeaker behavior. A battery tracking peak voltage limiter with brown out prevention optimizes amplifier headroom over the entire charge cycle of 2S or 3S battery systems.

Up to eight devices can share a common bus via either I2S/TDM + I2C.

The TAS2770 device is available in a 26-pin, 0.4-mm pitch QFN for a compact PCB footprint.

Features

  • High-Performance Mono Class-D Amplifier
    • 20-W at 1% THD+N (4 Ω, 16 V)
    • 15.4-W at 1 % THD+N (4 Ω, 12.6 V)
    • 9.1-W at 1 % THD+N (8 Ω, 12.6 V)
    • 7.1-W at 1 % THD+N (4 Ω, 8.4 V)
    • 4-W at 1 % THD+N (8 Ω, 8.4 V)
  • 0.03 % THD+N at 1 W (4 Ω, VBAT = 12.6 V)
  • 32-µVrms A-Weighted Idle Channel noise
  • 90-dB PSRR with 200 mVPP Ripple at 20 - 20 kHz
  • 82.5% Efficiency at 1 W (4 Ω, VBAT = 12.6 V)
  • < 1 µA HW Shutdown VBAT Current
  • 42 mW / 63 mW Idle Dissipation (8.4 V / 12.6 V)
  • Speaker Voltage and Current Sense
  • Real-Time Diagnostics Using I/V Speaker Sense
    • Over Current
    • Short Circuit(short to power, short to ground and terminal-to-terminal short)
    • Over-Temperature
  • VBAT Tracking Peak Voltage Limiter with Brown Out Prevention
  • 44.1-kHz to 192-kHz Sample Rates
  • Flexible User Interfaces
    • I2S/TDM: 8 Channels (32-bit / 96 kHz)
    • I2C: 8 selectable Addresses
  • MCLK Free Operation
  • Low Pop and Click
  • Power Supplies
    • VBAT: 4.5 V to 16 V
    • AVDD: 1.8 V
  • Spread-Spectrum Low EMI Mode
  • Thermal and Over Current Protection

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Parametrics

Compare all products in Speaker amps Email Download to Excel
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
TAS2770 Order now Digital Input     Class-D
Smart Amp    		 Mono     4.5     16     20     4     108     0.007     7.07     I2C     Closed     4.5     16     192     90     -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    
TAS2557 Order now Digital Input     Class-D Boosted
Smart Amp    		 Mono     2.7     5.5     5.7     4     111     0.0035     3.9     I2C
SPI    		 Closed     2.9     5.5     96     110     -40 to 85     Catalog    
TAS2559 Order now Digital Input     Class-D Boosted
Smart Amp    		 Mono     2.7     5.5     5.7     4     111     0.0035     3.9     I2C
SPI    		 Closed     2.9     5.5     96     110     -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