Application information

TS4974

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4.7

Pop performance

Due to its fully differential structure, the pop performance of the TS4974 is close to perfect.

components, the TS4974 includes pop reduction circuitry. With this circuitry, the TS4974 is

close to zero pop for all possible common applications.

In addition, when the TS4974 is in standby mode, due to the high impedance output stage in

this configuration, no pop is heard.

4.8

Single-ended input configuration

It is possible to use the TS4974 in a single-ended input configuration. The schematic in

Figure 41 shows an example of this configuration.

Figure 41.

Typical single-ended input application

4.9

Volume setting

The TS4974 features a digital volume control with an internal gain range of -33 dB up to

standby pin), an initial gain of -12dB is internally fixed. When standby mode is activated, the

gain value is memorized and held until standby is released.

Cin1

330nF

Cin2

330nF

P1

Vin

Cb

1µF

VCC

Cs

1µF

STBY control

Speaker

8 Ohms

S1

Volume DOWN

S2

Volume UP

470k

Rpd1

470k

Rpd1

470k

Rpu1

470k

Rpu2

VCC

VCC

DIGITAL VOLUME

CONTROL

BIAS

STBY

+

1

2

3

9

8

Vin-

Vin+

BYP ASS

STBY

Vout-

Vout+

U1

TS4974 DFN10