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SSM2166S

更新时间： 2024-01-13 10:41:40
品牌 Logo 应用领域
亚德诺 - ADI 消费电路商用集成电路音频放大器视频放大器光电二极管PC
页数 文件大小 规格书
15页 218K
描述
Microphone Preamplifier with Variable Compression and Noise Gating

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SSM2166S 技术参数

是否无铅：含铅是否Rohs认证：符合
生命周期：Active零件包装代码：SOIC
包装说明：SOP, SOP14,.25针数：14
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.31.00.01风险等级：0.83
Is Samacsys：N标称带宽：20 kHz
商用集成电路类型：AUDIO PREAMPLIFIER增益：20 dB
JESD-30 代码：R-PDSO-G14JESD-609代码：e3
长度：8.65 mm湿度敏感等级：1
信道数量：1功能数量：1
端子数量：14最高工作温度：85 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：SOP封装等效代码：SOP14,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：260电源：5 V
认证状态：Not Qualified座面最大高度：1.75 mm
子类别：Audio/Video Amplifiers最大压摆率：10 mA
最大供电电压 (Vsup)：5.5 V最小供电电压 (Vsup)：4.5 V
表面贴装：YES技术：BIPOLAR
温度等级：INDUSTRIAL端子面层：Matte Tin (Sn)
端子形式：GULL WING端子节距：1.27 mm
端子位置：DUAL处于峰值回流温度下的最长时间：30
宽度：3.9 mmBase Number Matches：1

SSM2166S 数据手册

 浏览型号SSM2166S的Datasheet PDF文件第2页浏览型号SSM2166S的Datasheet PDF文件第3页浏览型号SSM2166S的Datasheet PDF文件第4页浏览型号SSM2166S的Datasheet PDF文件第5页浏览型号SSM2166S的Datasheet PDF文件第6页浏览型号SSM2166S的Datasheet PDF文件第7页 
Microphone Preamplifier with  
a
Variable Compression and Noise Gating  
SSM2166*  
FEATURES  
20 dB; this gain is in addition to the variable gain in other com-  
Complete Microphone Conditioner in a 14-Lead Package  
Single +5 V Operation  
Adjustable Noise Gate Threshold  
Compression Ratio Set by External Resistor  
Automatic Limiting Feature—Prevents ADC Overload  
Adjustable Release Time  
Low Noise and Distortion  
Power-Down Feature  
20 kHz Bandwidth (؎1 dB)  
pression settings. The input buffer can also be configured for front-  
end gains of 0 dB to 20 dB. A downward expander (noise gate)  
prevents amplification of noise or hum. This results in opti-  
mized signal levels prior to digitization, thereby eliminating the  
need for additional gain or attenuation in the digital domain  
that could add noise or impair accuracy of speech recognition  
algorithms. The compression ratio and time constants are set  
externally. A high degree of flexibility is provided by the VCA  
Gain, Rotation Point, and Noise Gate adjustment pins.  
Low Cost  
The SSM2166 is an ideal companion product for audio codecs  
used in computer systems, such as the AD1845 and AD1847.  
The device is available in 14-lead SOIC and P-DIP packages,  
and guaranteed for operation over the extended industrial tempera-  
ture range of –40°C to +85°C. For similar features/performance  
in an 8-lead package, please refer to the SSM2165.  
APPLICATIONS  
Microphone Preamplifier/Processor  
Computer Sound Cards  
Public Address/Paging Systems  
Communication Headsets  
Telephone Conferencing  
Guitar Sustain Effects Generator  
Computerized Voice Recognition  
Surveillance Systems  
10  
RATIO = 10:1  
0
–10  
–20  
RATIO = 2:1  
Karaoke and DJ Mixers  
GENERAL DESCRIPTION  
The SSM2166 integrates a complete and flexible solution for  
conditioning microphone inputs in computer audio systems. It  
is also excellent for improving vocal clarity in communications  
and public address systems. A low noise voltage controlled  
amplifier (VCA) provides a gain that is dynamically adjusted by  
a control loop to maintain a set compression characteristic. The  
compression ratio is set by a single resistor and can be varied  
from 1:1 to over 15:1 relative to a user defined “rotation  
point;” signals above the rotation point are limited to prevent  
overload and eliminate “popping.” In the 1:1 compression set-  
ting the SSM2166 can be programmed with a fixed gain of up to  
RATIO = 1:1  
–30  
–40  
–50  
–60  
–70  
–60  
–50  
–40  
–30  
–20  
–10  
0
INPUT – dBu  
Figure 1. SSM2166 Compression and Gating Characteris-  
tics with 10 dB of Fixed Gain (The Gain Adjust Pin Can Be  
Used to Vary This Fixed Gain Amount)  
10␮F  
10␮F*  
R1 = 10k⍀  
+
+
V+  
5
3
4
14  
2.3k⍀  
VCA  
VCA  
BUF  
IN  
R
OUT  
2
V+  
1k⍀  
6
7
VCA GAIN  
ADJ  
BUFFER  
13  
V
1k⍀ VCA  
AUDIO  
+IN  
OUT  
500k⍀  
9
0.1␮F  
NOISE GATE  
SET  
LEVEL  
DETECTOR  
CONTROL  
17k⍀  
11  
R2 = 10k⍀  
SSM2166  
ROTATION  
POINT SET  
+
10  
25k⍀  
1␮F  
1
12  
8
COMPRESSION  
RATIO  
SET  
+
AVG  
CAP  
22␮F  
POWER  
DOWN  
*OPTIONAL  
GND  
*Patents pending.  
Figure 2. Functional Block Diagram and Typical Speech Application  
REV. A  
Information furnished by Analog Devices is believed to be accurate and  
reliable. However, no responsibility is assumed by Analog Devices for its  
use, nor for any infringements of patents or other rights of third parties  
which may result from its use. No license is granted by implication or  
otherwise under any patent or patent rights of Analog Devices.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781/329-4700  
Fax: 781/326-8703  
World Wide Web Site: http://www.analog.com  
© Analog Devices, Inc., 1999  
1234567...15

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