Volume

Class D

Volume

INM+

Volume

1 PF

1 PF

0.22 PF

0.22 PF

SDA

SCL

+ 6

+12 dB

Speaker

LSOUT+

8

+

+

+

+

- 6 dB

+

-

GND

Bias

Cs6

Bypass

CIN4

CIN3

CIN2

CIN1

INR

INL

I

2

CVDD

I

2

C

Interface

Mixer

and

Output

Mode

Select

2.2 PF

+

1 PF

Cs7

VDD

80 ~ + 18 dB

-

80 ~ + 18 dB

-

80 ~ + 18 dB

-

BYPASS

INM-

LSOUT-

2.2 PF

0.1 PF

Cs2

Cs1

LSVDD

LDO

HPR

HPL

Cs5

Charge Pump

C1

CPP

CPN

CPGND

VO (LDO)

2.2 PF

2.2 PF

Headphone

-18 dB - 0 dB

(8 steps)

+

2.2 PF

0.1 PF

Cs3

Cs4

CPVss

Headphone

-18 dB - 0 dB

(8 steps)

Amp

LM49150, LM49150TLEVAL

SNAS439C – AUGUST 2008 – REVISED MAY 2013

www.ti.com

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

Typical Application

Figure 1. Typical Audio Amplifier Application Circuit-Output Capacitor-less

2

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