TAS2505 2.6W Digital/Analog Input Class-D Speaker Amplifier With Audio Processing

1 Features

• Mono class-D BTL speaker amplifier

– 2.6W at 10% THD_N (4Ω, 5.5V)

– 1.7W at 10% THD+N (8Ω, 5.5V)

• Supports both digital and analog input

• Single supply 2.7V to 5.5V

• Load diagnostic functions:

– Output-to-GND Short

– Terminal-to-terminal short

– Output-to-power short

– Over temperature

– Input DC

• Supports 9kHz to 96kHz 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

2 Applications

• Instrument Cluster

• Automotive Emergency Call (eCall)

• Telematics

3 Description

The TAS2505 is a mono Class-D speaker amp

that supports both Digital and Analog inputs. The

device is designed 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. 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.

Device Information (1)

PART NUMBER

PACKAGE

PACKAGE SIZE

(2)

TAS2505

VQFN (24)

4.00mm × 4.00mm

TAS2505A-Q1

VQFN (24)

4.00mm × 4.00mm

(1)

For all available packages, see the orderable addendum at

the end of the data sheet.

(2)

The package size (length × width) is a nominal value and

includes pins, where applicable.

SPKVSS

AVSS

DVSS

AINL

AINR

SPKP

SPKM

HPOUT

RST

SPI_SEL

S

S

SPKVDD

AVDD

DAC Signal Proc.

SPI/I

2C

Control Block

PLL

Interrupt

Control

Primary I

2S

Interface

Pin Muxing / Clock Routing

POR

Mono S-D

DAC

DVDD

IOVDD

Secondary I

2S

Interface

Dig

Vol

6 dB to +24 dB

(6 dB steps)

-6 dB to +29 dB

and Mute

(1 dB steps)

0 dB to -78 dB

and Mute

(Min 0.5 dB steps)

0 dB to -78 dB

and Mute

(Min 0.5 dB steps)

0 dB to -78 dB and Mute

(Min 0.5 dB steps)

Simplified Block Diagram

TAS2505

SLAS778D – FEBRUARY 2013 – REVISED JANUARY 2025

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.