TS4962 datasheet(35/46 Pages) STMICROELECTRONICS

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TS4962

Application information

35/46

4.9

Single-ended input configuration

It's possible to use the TS4962 in a single-ended input configuration. However, input

coupling capacitors are needed in this configuration. The schematics in Figure 61 show a

single-ended input typical application.

Figure 61.

Single-ended input typical application

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

And, due to the internal resistor tolerance we have:

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

impedance on both TS4962 inputs (In- and In+) are equal.

Figure 62.

Typical application schematic with multiple single-ended inputs

Rin

GND

Vcc

SPEAKER

Cin

GND

Standby

In-

Stdby

In+

Out-

Out+

Vcc

GND

Internal

Bias

PWM

Output

Bridge

Oscillator

150k

gle

sin

Out

–

-------------------------------

300

----------

273

----------

gle

sin

327

----------

≤≤

Rin1

Req

GND

Vcc

SPEAKER

Cin1

Ceq

Ve1

GND

Standby

Rink

Cink

Vek

GND

In-

Stdby

In+

Out-

Out+

Vcc

GND

Internal

Bias

PWM

Output

Bridge

Oscillator

150k

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