TDA7405(2001) Ver la hoja de datos (PDF) - STMicroelectronics

Número de pieza

componentes Descripción

Fabricante

TDA7405
(Rev.:2001)

EQUALIZER CARRADIO SIGNAL PROCESSOR

STMicroelectronics 

2.8.2 Center Frequency

Figure 12 shows the four possible center frequencies 10k, 12.5k, 15k and 17.5kHz.

Figure 12. Treble Center Frequencies @ Gain = 14dB

15.0

TDA7405

12.5

10.0

7.5

5.0

2.5

0.0

10.0

100.0

1.0K

10.0K

2.9 EQ-Filter

There are two EQ-Filters present in the A631: one for the High-Frequency-Range and one for the Low-Frequen-

cy-Range with a certain overlap. They are programmable in center-frequeny (4 frequencies/octave), in Q(4 set-

tings) and in Attenuation (1dB-steps). In addition several configurations are possible to use the filters in the front-

or rear-path.

Table 2. Gain, Center Frequency and Quality Factor of Equalizer Filters

Parameter

Min

Max

Unit

Gain

-15

15

dB

Center Frequency Filter 1

63

840

Hz

Center Frequency Filter 2

300

4000

Hz

Quality Factor

1

4

17/56

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