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參數(shù)資料
| 型號(hào)： | LV25700PM |
| 廠(chǎng)商： | SANYO SEMICONDUCTOR CO LTD |
| 元件分類(lèi)： | 調(diào)諧器 |
| 英文描述： | AUDIO TUNER, PQFP80 |
| 封裝： | 20 X 14 MM, QIP-80 |
| 文件頁(yè)數(shù)： | 9/22頁(yè) |
| 文件大?。?/td> | 746K |
| 代理商： | LV25700PM |
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LV25700PM
No.A1709-17/68
Continued from preceding page.
Pin name
Function
Discription
Internal Equivalent Circuit
51
HCC capacitor pin
With pin 51 external capacity and internal
resistor R, high-cut frequency
characteristics are set.
Internal resistance can be changed over
with 3 bits (10k
Ω, 30kΩ, 50kΩ, 70kΩ, 90kΩ,
110k
Ω, 130kΩ, 150kΩ) (HCC cut off)
RF_VCC(PIN2)
10k
Ω
1k
Ω
R
GND(PIN48)
51
52
MPX PLL input
LPF formed with internal resistance 30k
Ω
and pin 34 eternal capacity
↓
HPF formed by subtracting the above LPS
passage signal from the Composite signal.
↓
Supply to MPX PLL circuit
BB_VCC(PIN53)
1k
Ω
30k
Ω
1k
Ω
52
BB_GND(PIN48)
53
NC MPX VCC
(NC, MPX, MRC)
VCC = 5V
54
55
Phase-Comparator
for MPX
54
55
10k
Ω 13kΩ
BB_VCC(PIN53)
13k
Ω 10kΩ
500
Ω
500
Ω
BB_GND(PIN48)
56
MRC TIME
The time constant for the Multipath-Noise
Detector is determined with the following:
100
Ω resistor and external capacity during
discharge
IConstant and external capacity during
charge.
IConstant can be changed over with 2bits
(MRC time constant).
BB_GND(PIN48)
20k
Ω
20S
56
RF_VCC(PIN2)
500
Ω
500
Ω
100
Ω
Iconst
Continued on next page.
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