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參數(shù)資料
| 型號： | LMV1012 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Pre-Amplified IC’s for High Gain 2-Wire Microphones |
| 中文描述： | 預(yù)放大集成電路的高增益2線麥克風(fēng) |
| 文件頁數(shù)： | 1/15頁 |
| 文件大小： | 497K |
| 代理商： | LMV1012 |
LMV1012 Analog Series:
Pre-Amplified IC’s for High Gain 2-Wire Microphones
General 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 guaranteed 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.
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 micro SMD packages. The LMV1012XP is designed
for 1.0 mm canisters and thicker ECM canisters. These
extremely miniature packages are designed for electret con-
denser microphones (ECM) form factor.
Features
(Typical LMV1012-15, 2.2V supply, R
= 2.2 k
, C = 2.2 μF,
V
IN
= 18 mV
PP
, unless otherwise specified)
n
Supply voltage
n
Supply current
n
Signal to noise ratio (A-weighted)
n
Output voltage noise (A-weighted)
n
Total harmonic distortion
n
Voltage gain
— LMV1012-07
— LMV1012-15
— LMV1012-20
— LMV1012-25
n
Temperature range
n
Offered in 4-bump micro SMD packages
2V - 5V
<
180 μA
60 dB
89 dBV
0.09%
7.8 dB
15.6 dB
20.9 dB
23.8 dB
40C to 85C
Applications
n
Cellular phones
n
Headsets
n
Mobile communications
n
Automotive accessories
n
PDAs
n
Accessory microphone products
Schematic Diagram
20058701
Built-In Gain Electret Microphone
20058702
August 2004
L
2004 National Semiconductor Corporation
DS200587
www.national.com
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LMV1012-07 | Analog Pre-Amplified IC’s for High Gain Microphones |
| LMV1012-15 | Pre-Amplified IC’s for High Gain 2-Wire Microphones |
| LMV1012-20 | Pre-Amplified IC’s for High Gain 2-Wire Microphones |
| LMV1012-25 | Pre-Amplified IC’s for High Gain 2-Wire Microphones |
| LMV102 | Fixed-Gain Amplifiers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LMV1012-07 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Pre-Amplified IC’s for High Gain 2-Wire Microphones |
| LMV1012-15 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Pre-Amplified IC’s for High Gain 2-Wire Microphones |
| LMV1012-20 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Pre-Amplified IC’s for High Gain 2-Wire Microphones |
| LMV1012-25 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Pre-Amplified IC’s for High Gain 2-Wire Microphones |
| LMV1012TP-07 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Pre-Amplified IC’s for High Gain 2-Wire Microphones |
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