Application Component Information

TS4962

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2 Application Component Information

Component

Functional Description

Cs

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.

Rin

Input resistor to program the TS4962 differential gain (Gain = 300k

Ω/Rin with Rin in kΩ)

Input

Capacitor

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

Rin

Rin

Cs

1u

GND

GND

GND

Vcc

Vcc

SPEAKER

In-

Stdby

In+

Out-

Out+

Vcc

C2

C1

A1

A2

A3

B1

B2

B3

C3

GND

Internal

Bias

PWM

Output

Bridge

H

Oscillator

150k

150k

+

-

TS4962

capacitors

Input

are optional

+

-

Differential

Input

In+

GND

In-

GND

1µF

15µH

15µH

Load

0.5µF

30µH

30µH

4 Ohms LC Output Filter

8 Ohms LC Output Filter

Rin

Rin

Cs

1u

GND

GND

GND

Vcc

Vcc

+

-

Differential

Input

In-

Stdby

In+

Out-

Out+

Vcc

C2

C1

A1

A2

A3

B1

B2

B3

C3

GND

Internal

Bias

PWM

Output

Bridge

H

Oscillator

150k

150k

+

-

TS4962

capacitors

Input

are optional

In+

GND

In-

GND