TS4994

Application Information

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4.10 Pop performance

In theory, due to a fully differential structure, the pop performance of the TS4994 should be perfect.

included a pop reduction circuitry reach the pop that is theoretical with mismatched components. With this

circuitry, the TS4994 is close to zero pop for all common applications possible.

In addition, when the TS4994 is set in standby, due to the high impedance output stage configuration in

this mode, no pop is possible.

4.11 Single ended input configuration

It’s possible to use the TS4994 in a single-ended input configuration. However, input coupling capacitors

areneeded in this configuration. The schematic in Figure 79 shows this configuration using the miniSO8

version of the TS4994 as example.

Figure 79. Single ended input typical application

The components calculations remain the same except for the gain. The new formula is:

Rfeed1

20k

Rin1

20k

Rin2

20k

Rfeed2

20k

Cin1

220nF

Cin2

220nF

Cb

1u

Cs

1u

GND

GND

GND

Ve

GND

GND VCC

VCC

Optional

8 Ohms

Bias

Vin-

Vin+

Bypass

Standby

VCC

GND

Vo-

Vo+

+

-

2

4

7

8

6

3

5

1

Stdby

TS4994IS

in

feed

O

O

SE

R

R

Ve

V

V

Av

=

−

=

−

+