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參數資料
| 型號： | LMV1012XP-15/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1 CHANNEL, AUDIO PREAMPLIFIER, PBGA4 |
| 封裝： | 0.30 MM HEIGHT, LEAD FREE, MO-211CA, MICRO, SMD-4 |
| 文件頁數： | 1/15頁 |
| 文件大小： | 877K |
| 代理商： | LMV1012XP-15/NOPB |
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
L = 2.2 k
, C = 2.2 F,
V
IN =18mVPP, unless otherwise specified)
n
Supply voltage
2V - 5V
n
Supply current
<180 A
n
Signal to noise ratio (A-weighted)
60 dB
n
Output voltage noise (A-weighted)
89 dBV
n
Total harmonic distortion
0.09%
n
Voltage gain
— LMV1012-07
7.8 dB
— LMV1012-15
15.6 dB
— LMV1012-20
20.9 dB
— LMV1012-25
23.8 dB
n
Temperature range
40C to 85C
n
Offered in 4-bump micro SMD packages
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
October 2005
LMV1012
Analog
Series
Pre-Amplified
IC’
s
for
High
Gain
2-W
ire
Microphones
2005 National Semiconductor Corporation
DS200587
www.national.com
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|---|---|
| LMV1012XP-25/NOPB | 1 CHANNEL, AUDIO PREAMPLIFIER, PBGA4 |
| LMV1022UR | AUDIO PREAMPLIFIER, PBGA6 |
| LMV1023URX | AUDIO PREAMPLIFIER, PBGA6 |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LMV1012XP-25 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述: |
| LMV1012XP-25/NOPB | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LMV1012XPX-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 |
| LMV1012XPX-15/NOPB | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LMV1012XPX-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 |
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