TS4962MEIJT datasheet(4/41 Pages) STMICROELECTRONICS

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Application component information

TS4962M

4/41

DocID11703 Rev 7

Application component information

Figure 3. Typical application schematics

Table 1. Component information

Component

Functional description

Bypass supply capacitor. Install as close as possible to the TS4962M to

minimize high-frequency ripple. A 100 nF ceramic capacitor should be

added to enhance the power supply filtering at high frequency.

Rin

Input resistor to program the TS4962M differential gain (gain

= 300 k

Ω/R

with Rin in kΩ).

Input capacitor

Due to common-mode feedback, these input capacitors are optional.

However, they can be added to form with Rin a 1

st order high-pass filter with

-3 dB cut-off frequency

= 1/(2*

π*R

in*Cin).

Rin

GND

Vcc

SPEAKER

In-

Stdby

In+

Out-

Out+

Vcc

GND

Internal

Bias

PWM

Output

Bridge

Oscillator

150k

TS4962

capacitors

Input

are optional

Differential

Input

In+

GND

In-

GND

Rin

GND

Vcc

Differential

Input

capacitors

Input

are optional

In+

GND

In-

GND

2µF

15µH

Load

4 Ohms LC Output Filter

8 Ohms LC Output Filter

2µF

GND

1µF

30µH

1µF

GND

In-

Stdby

In+

Out-

Out+

Vcc

GND

Internal

Bias

PWM

Output

Bridge

Oscillator

150k

TS4962

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