TDA7505 Datasheet, PDF (25/38 Pages) STMicroelectronics – Car radio DSP for advanced signal processing

TDA7505
Electrical specifications
Table 22.
Symbol
ADC electrical characteristics - measurement bandwidth 10Hz to 20kHz
(T_amb = 25°C, ADCVDD = 3.3V, A-weighted filter.)
Parameter
Test condition
Min. Typ. Max.
V_in Input voltage dynamic range
f_s Sampling rate
DR⁽¹⁾ Dynamic range
Single ended mode
Differential mode
Audio mode
-60dB analog input
0.5
1
48
84
88
SNR Signal to noise ratio
1kHz; -3dB analog input
THD+N Total harmonic distortion + noise 1kHz; -3dB analog input
R_i Input impedance
ICL⁽²⁾ Interchannel isolation
@ fs = 44.1kHz
Full scale input @ 1kHz
84
88
-85 -80
45
80
-95
1. The specified value is obtained by adding 60dB to THD+N measure @ full scale -60dB
2. ICL can be influenced by external anti alias filter
Unit
Vrms
kHz
dB
dB
dB
kΩ
dB
Table 23. ADC electrical characteristics - measurement bandwidth 10Hz to 53kHz
(T_amb = 25°C, ADCVDD = 3.3V)
Symbol
Parameter
Test condition
Min. Typ. Max. Unit
V_in Input voltage dynamic range
0.5
f_s Sampling rate
DR ⁽¹⁾ Dynamic range
FM-mode
-60dB analog input
80
SNR Signal to noise ratio
1kHz; -3dB analog input
80
THD+N Total harmonic distortion + noise 1kHz; -3dB analog input
1. The specified value is obtained by adding 60dB to THD+N measure @ full scale -60dB
Vrms
192 kHz
dB
dB
-80
dB
Table 24. ADC electrical characteristics - measurement bandwidth 10Hz to 192kHz
(T_amb = 25°C, AVDD = 3.3V)
Symbol
Parameter
Test condition
Min. Typ. Max. Unit
V_in Input voltage dynamic range
0.5
f_s Sampling rate
DR⁽¹⁾ Dynamic range
FM-mode for spike and RDS
-60dB analog input
60
SNR Signal to noise ratio
1kHz; -3dB analog input
60
1. The specified value is obtained by adding 60dB to THD+N measure @ full scale -60dB
Vrms
384 kHz
dB
dB
Table 25.
Symbol
Level ADC electrical characteristics
(T_amb = 25°C, AVDD = 3.3V)
Parameter
Test condition
Min. Typ. Max. Unit
V_in
THD
Input voltage range
Total harmonic distortion
THD+N Total harmonic distortion + noise
SNR Signal to noise ratio
0
2.5
V
-57
dB
-46
dB
46
dB
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