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ATR4258 Datasheet(PDF) 33 Page - ATMEL Corporation

Part # ATR4258
Description  AM/FM Receiver IC
PDF  38 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATR4258 Datasheet(HTML) 33 Page - ATMEL Corporation

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4838B–AUDR–05/05
ATR4258
Figure 10-4. Deviation Sensor
Note:
FM modulation frequency: 1 kHz; BW setting 2nd IF filter = 120 kHz;
demodulator fine tuning (bit 53 = 0)
The center frequency of the integrated band filter has to adjusted
(e.g., IF center frequency = 462.50 kHz).
Figure 10-5. Deviation Sensor Frequency Response
Note:
FM frequency deviation: 22.5 kHz
0
1
2
3
4
5
10000
30000
50000
70000
90000
Frequency Deviation [Hz]
+85°C
-40°C
0.0
0.2
0.4
0.6
0.8
1.0
100
1000
10000
100000
FM Modulation Frequency (Hz)



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