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參數(shù)資料
| 型號： | LV25700PM |
| 元件分類： | 調(diào)諧器 |
| 英文描述： | AUDIO TUNER, PQFP80 |
| 封裝： | 20 X 14 MM, QIP-80 |
| 文件頁數(shù)： | 14/22頁 |
| 文件大小： | 746K |
| 代理商： | LV25700PM |
LV25700PM
No.A1709-21/68
Continued from preceding page.
Pin name
Function
Discription
Internal Equivalent Circuit
73
AM/FM 1st IF
MIXER AMP output
Output impedance = 330
Ω
50
Ω
RF_GND(PIN12)
RF_VCC(PIN2)
73
300
Ω
74
IF VCC
(IF)
VCC = 5V
75
76
AM/FM 1st IF MIXER
AMP input
AM/FM 450kHz AMP
Input impedance = 330
Ω
75
76
IF_GND(PIN12)
300
Ω
300
Ω
300
Ω
77
AM RF AGC
RF AGC rectifier capacitor
Determination of the distortion ratio during
low-frequency modulation
Increase C77:
Distortion
→ improved
Response
→ slow
Decrease C77:
Distortion
→ worse
Response
→ quick
* Same as pin 79.
RF_VCC(PIN2)
IF_GND(PIN72)
1k
Ω
1k
Ω
1k
Ω
800k
Ω
77
78
HCC control input pin
With the Pin 78 input voltage, attenuation of
the high pass component is controlled.
↓
At weak input, high pass is cut to reduce
the noise feeling.
Same control for FM/AM HCC.
The f-characteristics are set by changing
over the external capacity (Pin 51) and
internal resistor.
Threshold can be controlled with 5 bits.
(FM/AM HCC DAC).
BB_GND(PIN48)
50k
Ω
1k
Ω
50k
Ω
RF_VCC(PIN2)
78
79
AM RF AGC
BYPASS
RF AGC rectifier capacitor
Determination of the distortion ratio during
low-frequency modulation
Increase C77:
Distortion
→ improved
Response
→ slow
Decrease C77:
Distortion
→ worse
Response
→ quick
* Same as pin 77.
IF_GND(PIN72)
1k
Ω
30k
Ω
79
80
MIXER OUT2
* See pin 1 description.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LV25700PM-MPB-E | 功能描述:調(diào)諧器 RoHS:否 制造商:NXP Semiconductors 功能: 噪聲系數(shù): 工作電源電壓: 最小工作溫度: 最大工作溫度: |
| LV25700PM-TBM-E | 制造商:ON Semiconductor 功能描述:ANALOG CAR RADIO TUNER - Tape and Reel |
| LV25-800 | 制造商:LEM 制造商全稱:LEM 功能描述:Voltage Transducer LV 25-800 |
| LV25810EB-3H | 制造商:ON Semiconductor 功能描述:CAR RADIO TUNER - Trays 制造商:ON Semiconductor 功能描述:FTRAY / CAR RADIO TUNER |
| LV25810P | 制造商:Sanyo Semi. 功能描述:Radio Tuner(Mid-End) |
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