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LMV1012TPX-25/NOPB PDF预览

LMV1012TPX-25/NOPB

更新时间： 2024-12-01 11:12:43
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德州仪器 - TI 放大器
页数 文件大小 规格书
23页 667K
描述
用于高增益双线麦克风的模拟输入麦克风前置放大器 | YPB | 4 | -40 to 85

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LMV1012TPX-25/NOPB 数据手册

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LMV1012  
www.ti.com  
SNAS194H –NOVEMBER 2002–REVISED MAY 2013  
LMV1012 Analog Series: Pre-Amplified IC's for High Gain 2-Wire Microphones  
Check for Samples: LMV1012  
1
FEATURES  
DESCRIPTION  
The LMV1012 is an audio amplifier series for small  
form factor electret microphones. This 2-wire portfolio  
is designed to replace the JFET amplifier currently  
being used. The LMV1012 series is ideally suited for  
applications requiring high signal integrity in the  
presence of ambient or RF noise, such as in cellular  
communications. The LMV1012 audio amplifiers are  
specified to operate over a 2.2V to 5.0V supply  
voltage range with fixed gains of 7.8 dB, 15.6 dB,  
20.9 dB, and 23.8 dB. The devices offer excellent  
THD, gain accuracy and temperature stability as  
compared to a JFET microphone.  
2
•
Typical LMV1012-15, 2.2V Supply, RL = 2.2 kΩ,  
C = 2.2 μF, VIN = 18 mVPP, Unless Otherwise  
Specified  
•
•
•
•
•
•
Supply Voltage: 2V - 5V  
Supply Current: <180 μA  
Signal to Noise Ratio (A-Weighted): 60 dB  
Output Voltage Noise (A-Weighted): −89 dBV  
Total Harmonic Distortion: 0.09%  
Voltage Gain  
–
–
–
–
LMV1012-07: 7.8 dB  
LMV1012-15: 15.6 dB  
LMV1012-20: 20.9 dB  
LMV1012-25: 23.8 dB  
The LMV1012 series enables a two-pin electret  
microphone solution, which provides direct pin-to-pin  
compatibility with the existing JFET market.  
The devices are offered in extremely thin space  
saving 4-bump DSBGA packages. The LMV1012XP  
is designed for 1.0 mm canisters and thicker ECM  
canisters. These extremely miniature packages are  
designed for electret condenser microphones (ECM)  
form factor.  
•
•
Temperature Range: −40°C to 85°C  
Offered in 4-Bump DSBGA Packages  
APPLICATIONS  
•
•
•
•
•
•
Cellular Phones  
Headsets  
Mobile Communications  
Automotive Accessories  
PDAs  
Accessory Microphone Products  
Schematic Diagram  
Built-In Gain Electret Microphone  
DIAPHRAGM  
V
DD  
2.2k  
AIRGAP  
ELECTRET  
2.2mF  
BACKPLATE  
CONNECTOR  
OUTPUT  
LMV1012  
IC  
-
INPUT  
+
-
+
GND  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
2
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2002–2013, Texas Instruments Incorporated  
1234567...23

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LMV1012TPX-25/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LMV1012TP-25/NOPB TI

完全替代

 用于高增益双线麦克风的模拟输入麦克风前置放大器 | YPB | 4
LMV1012TP-25/NOPB NSC

功能相似

 IC 1 CHANNEL, AUDIO PREAMPLIFIER, PBGA4, 0.50 MM HEIGHT, MO-211BC, MICRO, SMD-4, Audio/Vid

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