TS4621ML datasheet(30/40 Pages) STMICROELECTRONICS

30 / 40 page

Application information

TS4621ML

30/40

Doc ID 023181 Rev 1

Figure 67.

Typical application schematic with IEC 61000-4-2 ESD protection

By adding this ESD protection, the TS4621ML complies with the IEC 61000-4-2 level 4

standard on jack pins. Our demonstration board has been tested using the same conditions

as those outlined in the IEC 61000-4-2 standard. Results may differ depending on the layout

of the PCB.

●

15 kV (air discharge)

●

8 kV (contact discharge)

This IPAD has an internal series resistor Rout =15 Ω +/-20 % and an output capacitor

Cout =3.2 nF +/-25%.

4.3.7

Integrated input low-pass filter

The TS4621ML has an integrated internal first-order low-pass filter with a -3 dB cutoff . This

integrated filter is present on each input and filters any out-of-band audio noise coming from

the audio source.

4.4

Single-ended input configuration

The TS4621ML can be used in a single-ended input configuration. InR- and InL- or InR+

and InL+ can be shorted to ground through input capacitors. All Cin capacitors must have

the same value to keep the same PSRR performance as in a differential input configuration.

Figure 68 and Figure 69 show how to connect the TS4621ML. Note the ground connection

of each input. To avoid PSRR issues resulting from any ground noise, this connection must

be done on the ground of the audio source and not on the ground of the TS4621ML itself.

Cin

1 µF

Cin

1 µF

Cin

1 µF

Cin

1 µF

C12

2.2 µF

Css

2.2 µF

10 µF

3.3 µH

Vbat

Positive left input

Positive right input

Negative

supply

Positive

Supply

AGnd

AVdd

InL-

InL+

InR+

InR-

VoutL

VoutR

CMS

Level

detector

Level

detector

HpVdd

PVss

Negative right input

Negative left input

Gnd

IPad

AM06151

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