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TDA7786 数据表(PDF) 25 Page - STMicroelectronics

部件名 TDA7786
功能描述  ELITE automotive tuners for AM/FM car-radio
PDF  54 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

TDA7786 数据表(HTML) 25 Page - STMicroelectronics

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TDA7786, TDA7786M
Function description
53
2.18
Digital-down-converter (DDC)
The complex digital mixer in the DDC performs mixing of the IF signal to zero IF. The
internal sample rate for FM/AM processing is 456 kS/s and the sample rate for FM/AM IBOC
is 912 kS/s. AM IBOC require additional filtering implemented in software.
Figure 13. Digital-down-converter simplified block diagram
Figure 14. Cumulative transfer function at output of IBOC_FM filter
Table 10. Overall filter characteristics for IBOC_FM filter
Item
Value
Unit
Pass-band edge
282
kHz
Stop-band edge
325
kHz
In-band ripple (0 kHz to 282 kHz)
<0.002
dB
Anti-alias band range
[-500 +500]
kHz
Anti-alias Attenuation
100
dB



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