TDA7580_07 Datasheet, PDF (17/39 Pages) STMicroelectronics – FM/AM digital IF sampling processor

TDA7580
Block diagram and electrical specifications
Table 13. DSP core (T_j =-40°C to 125°C)
Symbol
Parameter
F_dspMax Maximum DSP clock frequency
Test condition
V_DD=1.7V, V_DD3= 3.3V
Min. Typ. Max. Unit
81.5
MHz
Table 14.
FM stereo decoder characteristics
(T_j =-40°C to 125°C; V_DD =1.7V to 1.9V, V_DD3 = 3.15V to 3.45V; BW for measurements
20Hz to 15KHz)
Symbol
Parameter
Test condition
Min. Typ. Max. Unit
a_ch Channel separation
THD Total harmonic distortion
(S+N)/N Signal plus noise to noise ratio
(Adjustble by SW from 0 to -45dB)
1KHz; mono; Δf=75KHz;
1KHz; mono; Δf=40KHz;
-45
0 dB
0.02 0.04 %
78 80 82 dB
MCK = 18.525MHz, F_sin/F_sout = 0.820445366
Table 15.
Sample rate converter
(T_j =-40°C to 125°C; V_DD =1.7V to 1.9V, V_DD3 = 3.15V to 3.45V);
BW for measurements 20Hz to 20KHz
Symbol
Parameter
Test condition
Min. Typ. Max. Unit
20Hz to 20kHz, full scale, 16 bit inp.
20Hz to 20kHz, full scale, 20 bit inp.
-95 -92 dB
-98 -95 dB
1 kHz full scale, 16 bit inp.
2 kHz full scale, 16 bit inp.
5 kHz full scale, 16 bit inp.
10 kHz full scale, 16 bit inp
THD+N Total harmonic distortion + noise
15 kHz full scale, 16 bit inp
1 kHz full scale, 20 bit inp.
2 kHz full scale, 20 bit inp.
5 kHz full scale, 20 bit inp.
10 kHz full scale, 20 bit inp
-98 -95 dB
-98 -95 dB
-98 -95 dB
-98 -95 dB
-98 -95 dB
-119 -116 dB
-116 -113 dB
-112 -109 dB
-108 -105 dB
DR
R_p
F_ratio
Dynamic Range
fratio = 0.82
Pass band ripple
Sampling frequency in/out ratio
15 kHz full scale, 20 bit inp
1 kHz -60 dB - 16 bit inp. A-weighted
1 kHz -60 dB - 24 bit inp. A-weighted
from 20Hz to 15kHz
Fsout = 44.1 kHz
-105 -102 dB
97 100
dB
141 145
dB
0.4 0.5 dB
0.7
1.13
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