Vco and am prescaler settings, Power supply – Atmel ATR4262M1 User Manual
Page 7
7
4994BS–AUDR–05/08
ATR4262M1 [Preliminary]
7.
VCO and AM Prescaler Settings
gives an example of the VCO divider and AM Prescaler settings and the reception
frequencies.
A small VCO frequency range of e.g., 195.3 MHz to 237.9 MHz allows reception of the most
important bands like FM, JPN, LW, MW, 49m, 41m, and 31m.
8.
Power Supply
There is only one power supply voltage (8V to 10V) necessary for operation of the ATR4262M1.
Table 7-1.
Typical VCO Divider, AM Prescaler Settings, and Reception Frequencies
Band
VCO-
divider
(D
FM
)
N-div.
Prescaler
(D
PLL
)
IF [MHz]
Min. Reception
Frequency [MHz]
Max. Reception
Frequency [MHz]
Min. VCO
Frequency
Max. VCO
Frequency
AM-
Prescaler
(D
AM
)
FM
2
2 +10.7
87.5
108
196.4
237.4
-
JPN
3
3
–10.7
76
90
195.9
237.9
-
WB
1
2
+10.7
162.4
162.55
173.1
173.25
-
OIRT
3
3
+10.7
65.8
74
229.5
254.1
-
OIRT
3
3
–10.7
65.8
74
165.3
189.9
-
LW/MW
-
2
+10.7
0.15
1.605
217
246.1
10
LW/MW
-
2
+10.7
0.15
1.605
195.3
221.49
9
120m
-
2
+10.7
2.3
2.5
208
211.2
8
...
49m
-
2
+10.7
5.95
6.2
199.8
202.8
6
41m
-
2
+10.7
7.1
7.35
213.6
216.6
6
31m
-
2
+10.7
9.5
9.9
202
206
5
...
15m
-
2
+10.7
21.45
21.85
192.9
195.3
3