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參數(shù)資料
| 型號： | LV25450PNW |
| 廠商： | SANYO SEMICONDUCTOR CO LTD |
| 元件分類： | 調(diào)諧器 |
| 英文描述： | AUDIO TUNER, PQFP64 |
| 封裝： | 10 X 10 MM, SQFP-64 |
| 文件頁數(shù)： | 26/40頁 |
| 文件大?。?/td> | 1251K |
| 代理商： | LV25450PNW |
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LV25450PNW
Continued from preceding page.
No.
Control block/data
Description
Related data
(8)
PLL filter switching mode
FMFIL
AMFIL
Switches the PLL filter
PLL filter switching
Filter state
AM/FM
AM filter
FM filter
0
OFF
ON
Normal
1
ON
OFF
Normal mode (MODE = 0)
The filter state is switched in conjunction with the AM/FM bit.
FM mode (AM/FM = 0)
A filter is formed on pins 8 and 11.
Since this filter can be independent of the filter used in AM mode, PLL locking can be
fast.
AM mode (AM/FM = 1)
A filter is formed on pins 9 and 10 and with the two internal switches SW1 and SW2.
An additional filter is added to pin 5 using an internal
resistor and an external capacitor.
AM/FM
(9)
IC internal signals
I/O ports
Control data
Specifies the I/O direction for the I/O ports
Data = 0 : Input port. The value 0 should be specified in normal operation.
= 1 : Output port. A value of 1 is used for IC testing.
* : This data must be set to 0 at all times other than IC evaluation.
Normally set to 0.
(10)
Crystal oscillator
oscillation
frequency fine adjustment
data
X_SW_0 to X_SW_2
Adjusts the crystal 4.5 MHz reference frequency if beating occurs
X’tal OSC ADJ [When a 4.5MHz oscillator element is used]
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
High (+100Hz)
↓
4.5MHz (Center value)
↓
Low (-100Hz)
R0 to R3,
XLVL0 to XLVL2
3k
Ω
1k
Ω
R7
30k
Ω
R12
2.2k
Ω
R11
1.3k
Ω
C10A
1
μF
C7
0.01
μF
C11A
0.033
μF
C11B
2200pF
VDD
PIN26
CP1
5k
Ω
SW2
+8V
PIN61
SW1
SW3
13
12
11
10
9
8
7
FET_GND
VT
FM_FET_OUT
AM_FET_OUT
AM_CP
FM_CP
Continued on next page.
No.A1668-32/40
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