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

TAS2770 (预发布)

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

 

Sample Availability

Prototype samples are available (PTAS2770RJQT). Request Now

描述

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 14.2 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.

特性

  • High-Performance Mono Class-D Amplifier
    • 20-W Peak at 1% THD+N (4 Ω, 16 V)
    • 15-W at 1 % THD+N (4 Ω, 12.6 V)
    • 14.2-W 0.1 % THD+N (4 Ω, 12.6 V)
    • 9-W at 1 % THD+N (8 Ω, 12.6 V)
    • 8.2-W at 0.1 % THD+N (4 Ω, 8.4 V)
    • 6.2-W at 0.1 % THD+N (4 Ω, 8.4 V)
    • 3.6-W at 0.1 % 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
  • 80% 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
  • 26-pin, 0.4-mm pitch, 3.5 mm × 4 mm QFN (RJQ) Package

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参数 与其它产品相比 扬声器放大器(AB 类/D 类)

 
Analog Supply (V) (Min)
Analog Supply (V) (Max)
Architecture
Speaker Channels (Max)
Audio Input Type
Output Power (W)
Load (Min) (ohms)
Iq (Typ) (mA)
Iq (Max) (mA)
THD + N @ 1 kHz (%)
PSRR (dB)
Iq per channel (Typ) (mA)
Pin/Package
Package Size: mm2:W x L (PKG)
Operating Temperature Range (C)
Control Interface
Shutdown Current (ISD) (uA)
Rating
TAS2770 TAS2557 TAS2559 TAS2560 TPA2015D1
4.5    2.9    2.9    2.9    2.3   
16    5.5    5.5    5.5    5.2   
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   
Digital Input    Digital Input    Digital Input    Digital Input    Analog Input   
20    5.7    5.7    5.6    2   
4    4    4    4    8   
  3.9    3.9    3.2    1.7   
  6.7    6.7    10.6    2.2   
  0.0035    0.0035    0.004    0.07   
90    110    110    110    85   
  3.9    3.9    3.2    1.7   
26VQFN-HR        30DSBGA    16DSBGA   
26VQFN-HR: 14 mm2: 3.5 x 4(VQFN-HR)        See datasheet (DSBGA)    See datasheet (DSBGA)   
-40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85   
I2C    I2C
SPI   
I2C
SPI   
I2C    GPIO   
  2    1    0.1    0.2   
Catalog    Catalog    Catalog    Catalog    Catalog