TS4962 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

TS4962

3W Filter-free Class D Audio Power Amplifier

STMicroelectronics 

Application Component Information

2 Application Component Information

TS4962

Component

Functional Description

Cs

Rin

Input

Capacitor

Bypass supply capacitor. To install as close as possible of the TS4962 to minimize high frequency rip-

ple. A 100nF ceramic capacitor should be add to enhance the power supply filtering in high frequency.

Input resistor to program the TS4962 differential gain (Gain = 300kΩ/Rin with Rin in kΩ)

Thanks to common mode feedback, these input capacitors are optional. However, we can add then to

form with Rin a 1st order high pass filter with -3dB cut-off frequency = 1/(2*π*Rin*Cin)

Figure 1. Typical application

Vcc

In+

GND

GND

+

Rin

Differential

Input

In-

-

Rin

Input

capacitors

are optional

GND

Vcc

C2 Stdby Internal

Bias

150k

B1

B2

Cs

Vcc

1u

Out+

GND

C3

C1

-

In-

In+ +

A1

150k

PWM

Output

H

Bridge

A3

Out-

SPEAKER

Oscillator

GND

TS4962

A2

B3

GND

Vcc

In+

GND

GND

+

Rin

Differential

Input

In-

-

Rin

Input

capacitors

are optional

GND

Vcc

C2 Stdby Internal

Bias

150k

B1

B2

Cs

Vcc

1u

4 Ohms LC Output Filter

Out+

GND

C3

15µH

C1

-

Output

In-

In+ +

A1

PWM

H

Bridge

1µF

150k

A3

Out-

15µH

Oscillator

GND

TS4962

A2

B3

30µH

GND

0.5µF

30µH

8 Ohms LC Output Filter

Load

3/22

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