您的位置：维库电子市场网 > Datasheet > LMV1024URX

LMV1024URX Datasheet

  • LMV1024URX

  • National Semiconductor [PDM Output with Pre-Amplifier for E...

  • 1140.52KB

  • NSC

阅览下载 纠错 0

扫码查看芯片数据手册

上传产品规格书

PDF预览

LMV1024/LMV1026 PDM Output with Pre-Amplifier for Electret Microphones
November 2005
LMV1024/LMV1026 (Stereo)
PDM Output with Pre-Amplifier for Electret Microphones
General Description
National鈥檚 LMV1024 and LMV1026 stereo amplifiers are
solutions for the new generation of voice enrichment capa-
bilities. National has integrated sigma delta modulation and
analog cores to improve the voice quality and the perfor-
mance and to support designer鈥檚 choices.
Each 20 kHz preamplifier drives a Pulse Density Modulated
(PDM) signal at an over sampled 60 bit stream, offering
versatility. These solutions provide immediate conversion to
high performance audio spectrum, thus completing a high
quality audio system. The LMV1024 and LMV1026 operate
from 1.6V to 3V.
National鈥檚 new adjustable clock frequency technology is de-
signed for stereo, performance and ease of use. The stereo
function is either a rising or falling edge clock command. The
high drive, robust PDM signal directly from an ECM (Electret
Condenser Microphone), upgrades existing lower quality,
low-level signal constraints.
These advanced mixed signal preamplifiers cleanly, accu-
rately and creatively eliminate older, poorer quality systems,
which restricted performance and versatility. The 4-wire
PDM signaling reduces RF noise and simplifies layout. Us-
ing National鈥檚 PDM solutions is the choice for higher quality
mono or stereo and multi-array applications.
National鈥檚 518uA circuits deliver stereo portability with audio
quality bandwidth. These solutions enable rapid system
evaluation and enhance consumer satisfaction. National pro-
vides the LMV1024 and LMV1026 in 6-bump micro SMD
packages with 1 kg adhesion properties.
Features
(Typical V
DD
= 1.8V, CLOCK = 1.2 MHz, f
INPUT
= 1 kHz,
V
INPUT
= 18 mV
PP
, unless otherwise specified)
n
Enhanced high-performance, full PDM output from the
element
n
Stereo chipset and array routing
n
SNR A-weighted
59 dB
n
Digital A-weighted noise floor
鈭?9 dBFS
n
Supply current
518 碌A
n
Clock frequency
400 kHz to 2.4 MHz
n
Total harmonic distortion
0.03%
n
Power supply rejection ratio
100 dB
n
Adhesion technology
>
1 kg
n
Highly integrated stereo or mono signaling
n
Maximized system performance
n
Reduced components and layout
n
RF (buzz noise) managed with 4 wire signaling
n
Thinnest 0.35 mm micro SMD packaging
Applications
n
n
n
n
n
n
Digital output audio subsystems and stereo arrays
Electret condenser microphones with all digital output
Portable communications and small form factor
Digital audio computing or voice security
Automotive or array systems
Headphone and Headset accessories
Typical Application
20133475
For a stereo application, see
STEREO OPERATION
in the Application Section.
漏 2005 National Semiconductor Corporation
DS201334
www.national.com

LMV1024URX相关型号PDF文件下载

您可能感兴趣的PDF文件资料

热门IC型号推荐

©2025 维库电子市场网（www.dzsc.com）　备案号：浙B2-20050339-1 经营许可证：浙B2-20210386版权声明
买家服务热线：0571-85317607 | 买家服务部QQ： QQ:1609526468
卖家服务热线：0571-85317607 | 卖家服务部QQ： QQ:331652727

扫码下载APP，
一键连接广大的电子世界。

在线人工客服

买家服务：
卖家服务：
技术客服：

0571-85317607

网站技术支持

13606545031

客服在线时间周一至周五
9:00-17:30

关注官方微信号，
第一时间获取资讯。

建议反馈
返回顶部

建议反馈

联系人：

联系方式：

按住滑块，拖拽到最右边
>>
感谢您向阿库提出的宝贵意见，您的参与是维库提升服务的动力！意见一经采纳，将有感恩红包奉上哦！

PDF纠错X

投诉电话：0571-85317607 投诉QQ：

如选匿名将无法为您反馈投诉结果，建议实名投诉！