TS4601

Application information

23/28

4.5

Low frequency response

characteristics tables on page 6) form a first order high pass filter and the -3 dB cut-off

frequency is:

4.6

Low pass output filter

The TS4601 is designed to operate with a passive first order low pass filter (see Figure 1:

Typical application schematics for the TS4601 on page 4). This low pass filter is mandatory

to ensure stability of the TS4601.

maximum. Values of 12

Ω and 1 nF are a good start point for a design able to drive a classic

headphone (16

Ω, 32 Ω, 60 Ω) and the line-in of any Hi-fi system or sound card. The cut-off

frequency of this filter (12

Ω and 1 nF) is about 13 MHz and clearly above the audio band.

F

c

3dB

–

()

1

2

πZ

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

=

C

16

F

c

------

=

⎝⎠

⎛⎞ C

in

typ

13.3

F

c

-----------

=

⎝⎠

⎛⎞ C

in

max

11

F

c

------

=

⎝⎠

⎛⎞

≤≤