TDA8421 datasheet(14/26 Pages) PHILIPS

14 / 26 page

May 1988

Philips Semiconductors

Product speciﬁcation

Hi-ﬁ stereo audio processor; I2C bus

TDA8421

Loudspeaker channel (CH1)

Control range at f = 1 kHz

maximum voltage gain (16 dB step)

Gmax

−−

minimum voltage gain (

−62 dB step)

Gmin

−60

−−

last position

Goff

−80

−85

−

mute position

Gmute

−85

−90

−

Resolution

Gstep

−

dB/step

Gain difference between left and

right AF channel (note 1)

gain from 16 dB to

−30 dB

∆G

−−

0,5

gain from

−30 dB to −62 dB

∆G

−−

1dB

TREBLE CONTROL (CH1)

For truth table see Table 10

Control range

for C10-5; C19-5 = 5,6 nF

Maximum emphasis at 15 kHz with

respect to linear position

Maximum attenuation at 15 kHz with

respect to linear position

Resolution

Gstep

−

dB/step

BASS CONTROL

For truth table see Table 9

Control range

for C8-9; C20-21 = 33 nF

Maximum emphasis at 40 kHz with

respect to linear position

Maximum attenuation at 40 kHz with

respect to linear position

Resolution

Gstep

−

dB/step

SPATIAL AND PSEUDO FUNCTION

Spatial:

Antiphase crosstalk

α−

−

Pseudo:

Phase shift (see Fig.15)

PARAMETER

SYMBOL

MIN.

TYP.

MAX.

UNIT

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