TAS2770 (ACTIVE)

Digital Input Mono Class-D Audio Amplifier with Speaker IV Sense

Digital Input Mono Class-D Audio Amplifier with Speaker IV Sense - TAS2770
 

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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)
    • 8.2-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

 
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
TAS2770 TAS2557 TAS2559 TAS2560 TPA2015D1
Digital Input    Digital Input    Digital Input    Digital Input    Analog Input   
Class-D Smart Amp    Class-D Boosted
Smart Amp   
Class-D Boosted
Smart Amp   
Class-D Boosted
Smart Amp   
Class-D Boosted   
Mono    Mono    Mono    Mono    Mono   
4.5    2.7    2.7    2.7    2.3   
16    5.5    5.5    5.5    5.2   
20    5.7    5.7    5.6    2   
4    4    4    4    8   
108    111    111    111    95   
0.007    0.0035    0.0035    0.004    0.07   
7.07    3.9    3.9    3.2    1.7   
I2C    I2C
SPI   
I2C
SPI   
I2C    GPIO   
Closed    Closed    Closed    Closed    Closed   
4.5    2.9    2.9    2.9    2.3   
16    5.5    5.5    5.5    5.2   
90    110    110    110    85   
-40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85   
Catalog    Catalog    Catalog    Catalog    Catalog