参数资料
型号: D1723GF
厂商: NEC Corp.
英文描述: PLL FREQUENCY SYNTHESIZER AND CONTROLLER FOR FM/MW/LF TUNER CAR AUDIO
中文描述: 锁相环频率合成器和控制器的调频/中波/低频调谐器汽车音响
文件页数: 38/80页
文件大小: 1590K
代理商: D1723GF
38
μ
PD1723GF-013,
μ
PD1723GF-213
Symbol
PSCAN
AMEMO
Function
Band
FM
MW
LW
VF
12.5
64
×
V
DD
Lowest Voltage to Determine the Presence of Station
0.977 V at V
DD
= 5 V
LOCAL mode
The frequencies are searched in the up direction, starting from the frequency currently being
received.
In the LOCAL mode, the SD detection level is changed and the frequencies are searched
twice. In the DX mode, the frequencies are searched once. When the preset memories are
written up to M6 during this time or at the end of 3 searches, the auto store memory
operation ends.
Example)
Japan, AM band 1422 kHz reception
Frequency
1422 1531 Seek 1620
ch1
1629 522
→ →
ch2
1411
ch1
Station
M1
Write
(LOCAL 1st Time)
ch2
Display
ch2
Operation
1422
1629 522
1411
ch2
ch2
ch2
(LOCAL 2nd Time)
1422
1629 522
695
1411
ch2
ch2
ch2
ch2
Station
M2
Write
ch3
(DX 1st Time)
1422
Auto Memory Stop
The SD detection level for LOCAL mode auto store memory is:
Band
Lowest Voltage Judged a Broadcast Station
Mode
LOCAL
1st time
LOCAL
2nd time
DX
1st time
LOCAL
1st time
LOCAL
2nd time
DX
1st time
44.5
64
×
V
DD
28.5
64
×
V
DD
12.5
64
×
V
DD
18.5
64
×
V
DD
15.5
64
×
V
DD
12.5
64
×
V
DD
3.477 V at V
DD
= 5 V
2.277 V at V
DD
= 5 V
0.977 V at V
DD
= 5 V
1.445 V at V
DD
= 5 V
1.211 V at V
DD
= 5 V
0.977 V at V
DD
= 5 V
FM
VF
MW
LW
..........
..........
..........
PSCAN
AMEMO
........................................
......
...................................
.....
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