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參數資料
| 型號： | LA74302FN |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | AUDIO AMPLIFIER, QCC28 |
| 封裝： | 5 X 5 MM, VQFN-28 |
| 文件頁數： | 2/12頁 |
| 文件大小： | 147K |
| 代理商： | LA74302FN |
LA75676NVA
No.A1005-10/12
Continued from preceding page.
Pin No.
Pin name
Function
Equivalent circuit
22
BPF OUT
Band-pass filter output.
The output to the external band-pass filter is passed
through an internal 6dB amplifier before being output.
23
FM filter
Filter that holds the FM detector output DC voltage
fixed.
Normally, a 1
μF electrolytic capacitor is used.
If the low band (around 50Hz) frequency characteristics
are of concern, this value should be increased.
The FM detection output level can be reduced and the
FM dynamic range improved by inserting the resistor R
in series with the capacitor between pin 23 and ground.
24
FM Detector
output
Audio FM detector output.
This is an emitter-follower circuit with a 300
Ω resistor
inserted in series.
Stereo applications.
In some application that provide input to a stereo
decoder, the input impedance may be reduced,
resulting in distortion in the L-R signal and degraded
stereo characteristics.
If this problem occurs, add a resistor between pin 24
and ground.
R1
≥ 5.1kΩ
Mono applications.
Construct an external de-emphasis circuit.
t = CR2
22
200
Ω
1k
Ω
1k
Ω
23
C
+
R
R2
300
Ω
10k
Ω
C
R1
24
ILA07169
ILA06706
ILA06707
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| LA74302FN | AUDIO AMPLIFIER, QCC28 |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LA74303FN | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Monolithic Linear IC Audio Interface for DSC |
| LA74308LP | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Monolithic Linear IC Audio Interface for DSC |
| LA74308LP_08 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Audio Interface for DSC |
| LA74309FA | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Microphone Amplifier for Digital Still Camera |
| LA74309FA-AH | 功能描述:音頻放大器 MICROPHONE AMPLIFIER(DSC) RoHS:否 制造商:STMicroelectronics 產品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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