TDA7501 datasheet(8/18 Pages) STMICROELECTRONICS

No de pièce	TDA7501

Description	LINE-DRIVER FOR DIGITAL CARRADIO SIGNAL PROCESSOR

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Fabricant	STMICROELECTRONICS [STMicroelectronics]

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Figure 5. Output part.

DESCRIPTION OF THE OUTPUT PART

The TDA7501 has 6 independent outputstage

with volume control. The first 4 (main) outputs

have an input selector which allows to select be-

sides the DAC-outputs CD-direct or Phone/Navi-

gation-mix. In addition one can mix the SPKR1

with Phone/Navigationso that traffic or navigation

announcements can bypass the DSP (see figure

5).

The TDA7500 CODEC outputs have a maximum

output voltage of 0.5Vrms . To obtain 4Vrms , (in

the dual supply mode only) the signal is first am-

plified to have a reference amplitude of 2V rms.

The following volume stage offers up to 15dB

gain which gives along with the programmable

6dB gain in the output-stage enough overdrive

capability. To achieve the maximum output swing

of 4Vrms the device must be supplied with an ad-

ditional supply of 12V. With a single supply (Vdd

=VCC = 8.3V) 2.8Vrms are obtained at the output

at maximum.

TDA7501

8/18

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