TDA7500A STMicroelectronics, TDA7500A Datasheet - Page 34

• Manufacturer Part Number: TDA7500A
• Description: IC PROCESSOR AM/FM DGTL 100-TQFP
• Manufacturer: STMicroelectronics
• Type: Audio Processorr

Specifications of TDA7500A

• Applications: Audio Systems
• Mounting Type: Surface Mount
• Package / Case: 100-TQFP Exposed Pad, 100-eTQFP, 100-HTQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TDA7500A
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:
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
Generic Audio Signal Processsing
34/40
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
FM weak signal processing
Integrated 19 kHz MPX filter and deemphasis
flexible noise cancellation
flexible multipath detector
Loudness
Bass, treble, fader control
Volume control
Stereo
input
Audio
noise
reduction
ANR
ANR
Dynamic
range
compression
DRC
DRC
Loudness Bass
LD
LD
B
B
Treble Parametric
T
T
equaliser
PEQ
PEQ
SM
SM
Soft
mute
+
HP
HP
LP
Routing
matrix
RM
DLY
DLY
DLY
DLY
DLY
Delay
RF
CF
LF
RR
LR
SW