LMV1026URX

更新时间： 2024-11-18 03:52:27

品牌	Logo	应用领域
美国国家半导体 - NSC		消费电路商用集成电路音频放大器视频放大器光电二极管
页数	文件大小	规格书
17页	1141K
描述
PDM Output with Pre-Amplifier for Electret Microphones

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技术参数
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LMV1026URX 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
包装说明：	FBGA, BGA6,2X3,20	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.33.00.01
风险等级：	5.83	标称带宽：	10 kHz
商用集成电路类型：	AUDIO AMPLIFIER	谐波失真：	0.03%
JESD-30 代码：	R-PBGA-B6	JESD-609代码：	e1
长度：	1.628 mm	湿度敏感等级：	1
信道数量：	2	功能数量：	1
端子数量：	6	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	FBGA	封装等效代码：	BGA6,2X3,20
封装形状：	RECTANGULAR	封装形式：	GRID ARRAY, FINE PITCH
峰值回流温度（摄氏度）：	260	电源：	1.8/2.7 V
认证状态：	Not Qualified	座面最大高度：	0.35 mm
子类别：	Audio/Video Amplifiers	最大压摆率：	0.65 mA
最大供电电压 (Vsup)：	3 V	最小供电电压 (Vsup)：	1.6 V
表面贴装：	YES	温度等级：	INDUSTRIAL
端子面层：	Tin/Silver/Copper (Sn/Ag/Cu)	端子形式：	BALL
端子节距：	0.5 mm	端子位置：	BOTTOM
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	1.128 mm
Base Number Matches：	1

LMV1026URX 数据手册

November 2005

LMV1024/LMV1026 (Stereo)

PDM Output with Pre-Amplifier for Electret Microphones

General Description

Features

National’s 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’s choices.

(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

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.

n SNR A-weighted

n Digital A-weighted noise floor

n Supply current

n Clock frequency

n Total harmonic distortion

n Power supply rejection ratio

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

59 dB

−89 dBFS

518 µA

400 kHz to 2.4 MHz

0.03%

100 dB

National’s 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’s PDM solutions is the choice for higher quality

mono or stereo and multi-array applications.

Applications

n Digital output audio subsystems and stereo arrays

n Electret condenser microphones with all digital output

n Portable communications and small form factor

n Digital audio computing or voice security

n Automotive or array systems

National’s 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.

n Headphone and Headset accessories

Typical Application

20133475

For a stereo application, see STEREO OPERATION in the Application Section.

DS201334

www.national.com

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