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参数资料
| 型号： | LMV1026URX |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 音频／视频放大 |
| 英文描述： | PDM Output with Pre-Amplifier for Electret Microphones |
| 中文描述： | 2 CHANNEL, AUDIO AMPLIFIER, PBGA6 |
| 封装： | 0.35 MM, LEAD FREE, MICRO SMD-6 |
| 文件页数： | 3/18页 |
| 文件大小： | 560K |
| 代理商： | LMV1026URX |
Application Section
The LMV1024/LMV1026 consist of a pre-amplifier and sigma
delta converter for placement inside an electret condenser
microphone (ECM). The output of the LMV1024/LMV1026 is
a robust digital serial bit stream eliminating the sensitive low-
level analog signals of conventional JFET microphones. This
application section describes, among others, a typical appli-
cation, a sensitivity comparison between different ECM types,
stereo operation and layout recommendations on the ECM
PCBs.
TYPICAL APPLICATION
Figure 1 depicts a typical application, where the LMV1024 or
LMV1026 is built inside the ECM canister. This ECM can be
directly connected to a DSP in a digital audio system, like a
baseband chip in a cell phone. Connecting is easy because
of the digital LMV1024/LMV1026 interface. A digital filter in
the DSP or Baseband decimates the audio signal.
20133424
FIGURE 1. Typical Application
BUILT-IN PRE-AMPLIFIER / ADC
The LMV1024/LMV1026 are offered in a space saving small
6-bump micro SMD package in order to fit inside small ECM
canisters. The LMV1024 or LMV1026 IC is placed on the
PCB. This PCB forms the bottom of the microphone, which is
placed in the cell phone.
20133443
FIGURE 2. Built-in Pre-Amplifier / ADC
Figure 3 depicts a cross section of a microphone with the IC
inside the ECM canister. The PCB of the microphone has 4
pads that connects V
DD, Ground, DATA and the CLOCK.
20133474
FIGURE 3. Cross section of a Microphone
11
www.national.com
201334 Version 3 Revision 4
Print Date/Time: 2009/07/20 17:12:49
LMV1024/LMV1026
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| LMV1026URX/NOPB | 功能描述:IC PRE AMP MIC MONO AB ADC 6USMD RoHS:是 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:DirectDrive® 类型:H 类 输出类型:耳机，2-通道（立体声） 在某负载时最大输出功率 x 通道数量:35mW x 2 @ 16 欧姆 电源电压:1.62 V ~ 1.98 V 特点:I²C，麦克风，静音，短路保护，音量控制 安装类型:表面贴装 供应商设备封装:25-WLP（2.09x2.09） 封装/外壳:25-WFBGA，WLCSP 包装:带卷 (TR) |
| LMV102M5 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| LMV102M5X | 功能描述:IC AMPLIFIER FIXED-GAIN SOT23-5 RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:1,000 系列:- 放大器类型:电压反馈 电路数:4 输出类型:满摆幅 转换速率:33 V/µs 增益带宽积:20MHz -3db带宽:30MHz 电流 - 输入偏压:2nA 电压 - 输入偏移:3000µV 电流 - 电源:2.5mA 电流 - 输出 / 通道:30mA 电压 - 电源，单路/双路(±):4.5 V ~ 16.5 V，±2.25 V ~ 8.25 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-SOIC（0.154"，3.90mm 宽） 供应商设备封装:14-SOIC 包装:带卷 (TR) |
| LMV102M7 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| LMV102M7X | 功能描述:IC AMP FIXED GAIN SC-70-5 RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:1,000 系列:- 放大器类型:电压反馈 电路数:4 输出类型:满摆幅 转换速率:33 V/µs 增益带宽积:20MHz -3db带宽:30MHz 电流 - 输入偏压:2nA 电压 - 输入偏移:3000µV 电流 - 电源:2.5mA 电流 - 输出 / 通道:30mA 电压 - 电源，单路/双路(±):4.5 V ~ 16.5 V，±2.25 V ~ 8.25 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-SOIC（0.154"，3.90mm 宽） 供应商设备封装:14-SOIC 包装:带卷 (TR) |
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