NCP2811

http://onsemi.com

4

Figure 4. Typical Application Schematic version B

+

−

+

−

AGND

OUTL

OUTR

CLICK/POP

SUPPRESSION

BIASING

SD

PGND

PVM

CPP

CPM

VRM

VRP

VP

Cs

VRP

VRP

VRM

VRM

Left

Audio

Right

Audio

VP

INL

INR

POWER MANAGEMENT

1 mF

1 mF

1 mF

Use 10 ohm resistor

for capacitive

drive capability

Table 1. PIN FUNCTION DESCRIPTION

PIN

CSP

PIN

TQFN

PIN

TSSOP

PIN

NAME

TYPE

DESCRIPTION

A1

7

10

AGND

GROUND

Analog ground. Connect to ground reference

A2

5

7

SD

INPUT

Enable activation

A3

10

13

OUTR

OUTPUT

Right audio channel output signal

A4

11

14

OUTL

OUTPUT

Left audio channel output signal

B1

12

2

VP

POWER

Positive supply voltage. It can be connected for example to a Lithium/Ion

battery

B2

8

11

INR

INPUT

Right input of the first audio source

B3

6

9

INL

INPUT

Left input of the first audio source

B4

−

−

SPVM

POWER

Amplifier negative power supply voltage. Connect to PVM

C1

1

3

CPP

INPUT/

OUTPUT

Charge pump flying capacitor positive terminal. A 1 mF ceramic filtering

capacitor to CPM is needed

C2

2

4

PGND

GROUND

Power ground, connect to ground reference

C3

3

5

CPM

INPUT

Charge pump flying capacitor negative terminal. A 1 mF ceramic filtering

capacitor to CPP is needed

C4

4

6

PVM

OUTPUT

Charge pump output. A 1 mF ceramic filtering capacitor to ground is

needed