TS4962MEIJT(2005) View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

TS4962MEIJT
(Rev.:2005)

3W Filter-free Class D Audio Power Amplifier

STMicroelectronics 

Application Information

TS4962M

5.9

Single ended input configuration

It's possible to use the TS4962M in a single-ended input configuration. However, input coupling

capacitors are needed in this configuration. The following schematic shows a single ended

input typical application.

Ve

GND

Standby

Cin Rin

Rin

Cin

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

All formulas are identical except for the gain with Rin in kΩ:

AV single

=

-------------V----e-------------

Out+ – Out-

=

3----0---0--

Rin

And, due to the internal resistor tolerance we have:

2----7---3--

Rin

≤

AV single ≤

3----2---7--

Rin

In the event that multiple single-ended inputs are summed, it is important that the impedance

on both TS4962M inputs (In- and In+) are equal.

Vek

GND

Ve1

Cink

Cin1

GND

Ceq

GND

Vcc

Standby

Rink

Rin1

Req

C2 Stdby Internal

Bias

150k

C1 -

In-

In+ +

A1

PWM

150k

B1

B2

Cs

Vcc

1u

Out+ GND

C3

Output

H

Bridge

A3

Out-

SPEAKER

Oscillator

GND TS4962

A2

B3

GND

24/32

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