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LM4941SD/NOPB.A中文资料德州仪器数据手册PDF规格书

LM4941SD/NOPB.A
厂商型号

LM4941SD/NOPB.A

功能描述

LM4941 1.25 Watt Fully Differential Audio Power Amplifier With RF Suppression and Shutdown

丝印标识

4941

封装外壳

WSON

文件大小

635.92 Kbytes

页面数量

23

生产厂商 Texas Instruments
企业简称

TI2德州仪器

中文名称

美国德州仪器公司官网

原厂标识
数据手册

下载地址一下载地址二到原厂下载

更新时间

2025-8-4 16:22:00

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LM4941SD/NOPB.A规格书详情

1FEATURES

2• Improved RF Suppression, By Up to 20dB

Over Previous Designs in Selected

Applications

• Fully Differential Amplification

• Available in Space-Saving DSBGA Package

• Ultra Low Current Shutdown Mode

• Can Drive Capacitive Loads up to 100pF

• Improved Pop & Click Circuitry Eliminates

Noises During Turn-On and Turn-Off

Transitions

• 2.4 - 5.5V Operation

• No Output Coupling Capacitors, Snubber

Networks or Bootstrap Capacitors Required

APPLICATIONS

• Mobile Phones

• PDAs

• Portable Electronic Devices

KEY SPECIFICATIONS

• Improved PSRR at 217Hz 95dB (typ)

• Power Output, VDD = 5.0V, RL = 8Ω, 1% THD+N

1.25W (typ)

• Power Output, VDD = 3.0V, RL = 8Ω, 1% THD+N

430mW (typ)

• Shutdown Current 0.1μA (typ)

DESCRIPTION

The LM4941 is a fully differential audio power

amplifier primarily designed for demanding

applications in mobile phones and other portable

communication device applications. It is capable of

delivering 1.25 watts of continuous average power to

a 8Ω load with less than 1% distortion (THD+N) from

a 5VDC power supply. The LM4941 does not require

output coupling capacitors or bootstrap capacitors,

and therefore is ideally suited for mobile phone and

other small form factor applications where minimal

PCB space is a primary requirement.

The LM4941 also features proprietary internal

circuitry that suppresses the coupling of RF signals

into the chip. This is important because certain types

of RF signals (such as GSM) can couple into audio

amplifiers in such a way that part of the signal is

heard through the speaker. The RF suppression circuitry in the LM4941 makes it well-suited for

portable applications in which strong RF signals

generated by an antenna from or a cellular phone or

other portable electronic device may couple audibly

into the amplifier.

Other features include a low-power consumption

shutdown mode, internal thermal shutdown

protection, and advanced pop & click circuitry.

供应商 型号 品牌 批号 封装 库存 备注 价格
NS
2025+
TO-220-5
5425
全新原厂原装产品、公司现货销售
询价
TI
25+23+
23769
绝对原装全新正品现货/优势渠道商、原盘原包原盒
询价
TI
22+
8-WSON
5000
全新原装,力挺实单
询价
NS
22+
TO220
1000
原装现货库存.价格优势!!
询价
TI
2025+
WSON-8
16000
原装优势绝对有货
询价
TI/德州仪器
23+
8-WSON
3722
原装正品代理渠道价格优势
询价
NS
2020+
TO-220-5
4500
百分百原装正品 真实公司现货库存 本公司只做原装 可
询价
TI/德州仪器
23+
WSON-8
9990
只有原装
询价
TI/德州仪器
25+
原厂封装
10280
原厂授权代理,专注军工、汽车、医疗、工业、新能源!
询价
TI/德州仪器
25+
WSON-8
860000
明嘉莱只做原装正品现货
询价