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参数资料
| 型号： | TLV1012-15YDCR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 1 CHANNEL, AUDIO AMPLIFIER, PBGA4 |
| 封装： | GREEN, DSBGA-4 |
| 文件页数： | 9/12页 |
| 文件大小： | 246K |
| 代理商： | TLV1012-15YDCR |
APPLICATION INFORMATION
High Gain
Built-In Gain
TLV1012
Airgap
Diaphragm
Electret
Connector
Backplate
A-Weighted Filter
-70
-60
-50
-40
-30
-20
-10
0
10
100
1000
10000
100000
Frequency – Hz
F
il
te
r
–
d
B
V
SLCS154A – OCTOBER 2008 – REVISED NOVEMBER 2008 .......................................................................................................................................... www.ti.com
The TLV1012 provides outstanding gain compared to JFET amplifiers and still maintains the same ease of
implementation, with improved gain, linearity, and temperature stability. A high gain eliminates the need for extra
external components.
The TLV1012 is offered in the space-saving YDC package, which fits perfectly into the metal can of a
microphone. This allows the TLV1012 to be placed on the PCB inside the microphone.
The bottom side of the PCB usually shows a bull's-eye pattern, where the outer ring, which is shorted to the
metal can, should be connected to the ground. The center dot on the PCB is connected to the VCC through a
resistor. This phantom biasing allows both supply voltage and output signal on one connection.
Figure 2. Built-In Gain
The human ear has a frequency range from 20 Hz to about 20 kHz. Within this range the sensitivity of the human
ear is not equal for each frequency. To approach the hearing response, weighting filters are introduced. One of
those filters is the A-weighted filter.
The A-weighted filter is usually used in signal-to-noise ratio measurements, where sound is compared to device
noise. It improves the correlation of the measured data to the signal-to-noise ratio perceived by the human ear.
Figure 3. A-Weighted Filter
6
Copyright 2008, Texas Instruments Incorporated
Product Folder Link(s): TLV1012
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TLV1018 | 制造商:TI 制造商全称:Texas Instruments 功能描述:AMPLIFIER FOR THREE-WIRE ANALOG ELECTRET MICROPHONES |
| TLV1018-15YDCR | 功能描述:音频放大器 Amp for 3-Wire Ana Electret Microphones RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TLV1018-25YDCR | 功能描述:音频放大器 Amp for 3-Wire Ana Electret Microphones RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TLV1112 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:1.2-V, 0.8-A LOW-DROPOUT VOLTAGE REGULATOR |
| TLV1112CDCY | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:1.2-V, 0.8-A LOW-DROPOUT VOLTAGE REGULATOR |
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