TDA7405 datasheet(17/56 Pages) STMICROELECTRONICS

部件名	TDA7405

功能描述	EQUALIZER CARRADIO SIGNAL PROCESSOR

PDF	56 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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TDA7405

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

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

Center Frequency Filter 1

840

Center Frequency Filter 2

300

4000

Quality Factor

0.0

2.5

5.0

7.5

10.0

12.5

15.0

10.0

100.0

1.0K

10.0K

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