TDA7500A datasheet(34/40 Pages) STMICROELECTRONICS

34 / 40 page

TDA7500A

34/40

Codec

The CODEC is composed of four AD mono converters, three DA stereo converters. The ADC can operate

both in audio mode and in FM/AM mode. When in audio mode, it converts the audio bandwidth from 20 to

20KHz. The A to D is a third order Sigma-Delta converter, the converter resolutions is 20 bit with 88 dB of

dynamic range and 85dB of total harmonic distortion. When in FM mode, the converted bandwidth is up

to 192KHz. The D to A is a third order Sigma-Delta converter with a low noise reconstructing analog filter,

the converter resolution is 20 bit with 93 dB of dynamic range and 85dB of total harmonic distortion. All

the reference voltages are generated inside the chip.

Some capabilities of the CODEC are listed below:

20-Bit Resolution

Digital Anti-Alias Filtering embedded

Adjustable System Sampling Rates

93dB D/A Dynamic Range (Not-Weighted)88dB A/D Dynamic Range (Not-Weighted)

85dB D/A (THD+N/S)85dB A/D (THD+N/S)

Internal Differential Analog Architecture

+3.3V Power Supply

SOFTWARE FEATURES

A great flexibility is guaranteed by the two programmable DSP cores. A list of the main software functions

which can be implemented in the TDA7500A is enclosed hereafter. A block diagram of the audio process-

ing flow is shown in Fig. 19 below.

Figure 19. Software Block Diagram of Audio & Sound Processing

AM/FM Baseband Signal Processing

FM weak signal processing

Integrated 19 kHz MPX filter and deemphasis

flexible noise cancellation

flexible multipath detector

Generic Audio Signal Processsing

Loudness

Bass, treble, fader control

Volume control

DLY

PEQ

DRC

ANR

DLY

PEQ

DRC

ANR

DLY

Audio

noise

reduction

Dynamic

range

compression

Loudness Bass

Treble Parametric

equaliser

Soft

mute

Routing

matrix

Delay

Stereo

input

TDA7500A bảng dữ liệu(PDF) 34 Page - STMicroelectronics

TDA7500A bảng dữ liệu(HTML) 34 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

bảng dữ liệu tải về

Link URL