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參數(shù)資料
| 型號： | NJW1165 |
| 廠商： | New Japan Radio Co., Ltd. |
| 英文描述： | AUDIO PROCESSOR |
| 中文描述： | 音頻處理器 |
| 文件頁數(shù)： | 11/25頁 |
| 文件大小： | 508K |
| 代理商： | NJW1165 |
NJW1165
- 11 -
I
APPLICATION NOTE
1. AGC (Auto Gain Control) Circuit
AGC circuit adjusts the input signal level with Boost/Attenuate circuit. AGC boost the low input signal level
and attenuate high input signal level automatically.
The AGC flat levels (150mV, 300mV, 400mV and 540mV) are selectable via I
2
C bus. (Refer to the following
figure.)
Attack-Recovery
Attack and recovery time in the attenuation processing depends on external part Ca, and it in the boost
processing depends on external part Cb. They become longer as the capacity bigger and become shorter as
it gets smaller. (Recommendation value: Ca=1
μ
F, Cb=4.7
μ
F)
Reducing the capacity of Ca may cause the distortion. As for Cb, since it serves as the click noise
prevention, reducing the capacity may cause the click noise upon volume changing.
Ir=0.5
μ
A
9pin
Ca
Ra=4k
Cb
11pin
12pin
Rb=8k
Smoothing circuit of Attenuate
Smoothing circuit of Boost
0.001
0.01
0.1
1
0.001
0.01
0.1
1
AGC Control
O
Input Voltage [Vrms]
V+=9V, Vin(Ach+Bch), f=1kHz, Vo(Ach)OUTPUT
Rg=600
, Ta=25
o
C
150mV
300mV
400mV
540mV
AGC OFF
AGC ON
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| NJW1165M | AUDIO PROCESSOR |
| NJW1165L | AUDIO PROCESSOR |
| NJW1167 | AUDIO PROCESSOR with Subwoofer Output |
| NJW1167V | AUDIO PROCESSOR with Subwoofer Output |
| NJW1167FJ2 | AUDIO PROCESSOR with Subwoofer Output |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| NJW1165L | 制造商:NJRC 制造商全稱:New Japan Radio 功能描述:AUDIO PROCESSOR |
| NJW1165M | 制造商:NJRC 制造商全稱:New Japan Radio 功能描述:AUDIO PROCESSOR |
| NJW1165M-TE1 | 功能描述:音頻 DSP EALA RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube |
| NJW1166 | 制造商:NJRC 制造商全稱:New Japan Radio 功能描述:AUDIO PROCESSOR with Subwoofer Output |
| NJW1166L | 功能描述:音頻放大器 EALA Audio Process w/Subwoofer Output RoHS:否 制造商:STMicroelectronics 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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