2.6W Mono Digital & Analog Input Automotive Class-D Speaker Amplifier



The TAS2505-Q1 is a mono Class-D speaker amp that supports both Digital and Analog inputs. The device is ideal for automotive instrument cluster, emergency call (eCall), and telematics applications. Direct I2S input removes the need for an external DAC in the audio signal path, and the integrated LDO enables single supply operation. In addition to integration, the device features programmable audio processing. The onboard DSP supports bass boost, treble, and EQ (up to 6 biquads). An on-chip PLL provides the high-speed clock needed by the DSP. The volume level is register controlled.


  • Mono Class-D BTL Speaker Amplifier
    • 2.6 W at 10% THD_N (4Ω, 5.5 V)
    • 1.7 W at 10% THD+N (8 Ω, 5.5 V)
  • Supports both Digital and Analog Input
  • Single Supply 2.7 V to 5.5 V
  • Load Diagnostic Functions:
    • Output-to-GND Short
    • Terminal-to-Terminal Short
    • Output-to-Power Short
    • Over Temperature
  • Supports 9-kHz to 96-kHz Sample Rates
  • Two Single-Ended Inputs with Output Mixing and Level Control
  • Embedded Power-On-Reset
  • Programmable Digital Audio Processing:
    • Bass Boost
    • Treble
    • EQ (up to 6 Biquads)
  • I2S, Left-Justified, Right-Justified, DSP, and TDM Audio Interfaces
  • I2C and SPI Control With Auto-Increment
  • 24-Pin, VQFN Package

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Parametrics Compare all products in Speaker Amplifier Class AB/Class D

Analog Supply (V) (Min)
Analog Supply (V) (Max)
Speaker Channels (Max)
Audio Input Type
Output Power (W)
Load (Min) (ohms)
Iq (Typ) (mA)
Iq (Max) (mA)
THD + N @ 1 kHz (%)
Iq per channel (Typ) (mA)
Package Size: mm2:W x L (PKG)
Operating Temperature Range (C)
Control Interface
Shutdown Current (ISD) (uA)
TAS2505-Q1 LM48100Q-Q1 TAS2521 TPA2005D1-Q1
1.5    3    1.5    4.5   
1.95    5    1.95    5.5   
Class D    Class AB    Class D    Class D   
Mono    Mono    Mono    Mono   
Analog Input
Digital Input   
Analog Input    Analog Input
Digital Input   
Analog Input   
2.6    2.4    2    1.18   
4    8    4    8   
  4.4      2.8   
  10.8      4.5   
  0.04      0.2   
47.2    74    47.2    75   
  2.2      2.8   
24VQFN    14HTSSOP    24VQFN    8MSOP-PowerPAD
24VQFN: 16 mm2: 4 x 4(VQFN)    14HTSSOP: 32 mm2: 6.4 x 5(HTSSOP)    24VQFN: 16 mm2: 4 x 4(VQFN)    8MSOP-PowerPAD: 15 mm2: 4.9 x 3(MSOP-PowerPAD)
See datasheet (SON)   
-40 to 105    -40 to 105    -40 to 85    -40 to 105
-40 to 85   
I2C, SPI    I2C    I2C
0.04    0.01    0.04    0.5   
Automotive    Automotive    Catalog    Automotive   

Other qualified versions of TAS2505-Q1

Version Part Number Definition
Catalog TAS2505 TI's standard catalog product

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