MIPSZ2012D3R3 datasheet(36/48 Pages) STMICROELECTRONICS

36 / 48 page

Application information

TS4621B

36/48

Doc ID 022194 Rev 2

Figure 78.

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

By adding this ESD protection, the TS4621B 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 %.

4.4.7

Integrated input low-pass filter

The TS4621B has an integrated internal first-order low-pass filter with a -3 dB cutoff

frequency set at 65 kHz and independent of the volume position. This integrated filter is

present on each input and filters any out-of-band audio noise coming from the audio source.

4.5

Single-ended input configuration

The TS4621B 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 79 and Figure 80 show how to connect the TS4621B. 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 TS4621B 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

I²C Bus

Positive left input

Positive right input

I2C

Negative

supply

Positive

Supply

AGnd

SDA

SCL

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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