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參數資料
| 型號： | NJW1161 |
| 廠商： | New Japan Radio Co., Ltd. |
| 英文描述： | AUDIO PROCESSOR with SRS 3D STEREO |
| 中文描述： | 音頻處理器與SRS 3D立體聲 |
| 文件頁數： | 10/25頁 |
| 文件大?。?/td> | 554K |
| 代理商： | NJW1161 |
NJW1161
- 10 -
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PDF資料 |
PDF描述 |
|---|---|
| NJW1161L | AUDIO PROCESSOR with SRS 3D STEREO |
| NJW1161M | AUDIO PROCESSOR with SRS 3D STEREO |
| NJW1163 | AUDIO PROCESSOR with Subwoofer Output |
| NJW1163A | AUDIO PROCESSOR with Subwoofer Output |
| NJW1163AL | AUDIO PROCESSOR with Subwoofer Output |
相關代理商/技術參數 |
參數描述 |
|---|---|
| NJW1161L | 制造商:NJRC 制造商全稱:New Japan Radio 功能描述:AUDIO PROCESSOR with SRS 3D STEREO |
| NJW1161M | 制造商:NJRC 制造商全稱:New Japan Radio 功能描述:AUDIO PROCESSOR with SRS 3D STEREO |
| NJW1163 | 制造商:NJRC 制造商全稱:New Japan Radio 功能描述:AUDIO PROCESSOR with Subwoofer Output |
| NJW1163A | 制造商:NJRC 制造商全稱:New Japan Radio 功能描述:AUDIO PROCESSOR with Subwoofer Output |
| NJW1163AL | 功能描述:處理器 - 專門應用 EALA Audio Processor w/Subwoofer Output RoHS:否 制造商:Freescale Semiconductor 類型:Multimedia Applications 核心:ARM Cortex A9 處理器系列:i.MX6 數據總線寬度:32 bit 最大時鐘頻率:1 GHz 指令/數據緩存: 數據 RAM 大小:128 KB 數據 ROM 大小: 工作電源電壓: 最大工作溫度:+ 95 C 安裝風格:SMD/SMT 封裝 / 箱體:MAPBGA-432 |
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