Datasheet 搜索 > 音频放大器 > TI（德州仪器） > LM49101TMX/NOPB 数据手册 > LM49101TMX/NOPB 数据手册 1/33 页
器件3D模型￥ 20.749
LM49101TMX/NOPB 数据手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
音频放大器
封装:
DSBGA-25
描述:
音频放大器 Mono Class AB Audio Subsystem with a True Ground Headphone Amplifier and Earpiece Switch 25-DSBGA -40 to 85
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
典型应用电路图在P2P23
封装尺寸在P29P30P31
焊盘布局在P27
标记信息在P29
封装信息在P29P30P31
技术参数、封装参数在P1P4P5P7P9
应用领域在P1
电气规格在P4P5P6P7P8P9P10P11P12P13P14P15
导航目录
LM49101TMX/NOPB数据手册
Page:
of 33 Go
若手册格式错乱，请下载阅览PDF原文件
LM49101, LM49101TMEVAL
www.ti.com
SNAS475A –MARCH 2009–REVISED APRIL 2013
LM49101 Mono Class AB Audio Subsystem with a True
Ground Headphone Amplifier and Earpiece Switch
Check for Samples: LM49101, LM49101TMEVAL
1
FEATURES
APPLICATIONS
2
• Differential Mono Input and Stereo Single-
• Portable Electronic Devices
Ended Input
• Mobile Phones
• Separate Earpiece (Receiver) Differential Input
• PDAs
• Analog Switch for a Separate Earpiece Path
DESCRIPTION
• 32-Step Digital Volume Control (-80 to +18dB)
The LM49101 is a fully integrated audio subsystem
• Three Independent Volume Channels (Left,
with a mono power amplifier capable of delivering
Right, Mono)
540mW of continuous average power into an 8Ω BTL
• Separate Headphone Volume Control
speaker load with 1% THD+N using a 3.3V supply.
The LM49101 includes a separate stereo headphone
• Flexible Output for Speaker and Headphone
amplifier that can deliver 44mW per channel into 32Ω
Output
loads using a 2.75V supply.
• True Ground Headphone Amplifier Eliminates
Large DC Blocking Capacitors Reducing PCB
The LM49101 has four input channels. A pair of
single-ended inputs and a fully differential input
Space and Cost
channel with volume control and amplification stages.
• Hardware Reset Function
Additionally, a bypass differential input is available
• RF Immunity Topology
that connects directly to the mono speaker outputs
• “Click and Pop” Suppression Circuitry
through an analog switch without any amplification or
volume control stages. The LM49101 features a
• Thermal Shutdown Protection
32–step digital volume control on the input stage and
• Micro-Power Shutdown
an 8–step digital volume control on the headphone
• I
2
C Control Interface
output stage.
• Available in Space-Saving DSBGA Package
The digital volume control and output modes,
programmed through a two-wire I
2
C compatible
KEY SPECIFICATIONS
interface, allows flexibility in routing and mixing audio
channels.
• Supply Voltage (V
DD
LS): 2.7V ≤ V
DD
LS ≤ 5.5V
The LM49101 is designed for cellular phones, PDAs,
• Supply Voltage (V
DD
HP): 1.8V ≤ V
DD
HP ≤ 2.9V
and other portable handheld applications. The high
• I
2
C Supply Voltage: 1.7V ≤ I
2
CV
DD
≤ 5.5V
level of integration minimizes external components.
• Output Power, V
DD
LS = 5V, V
DD
HP = 2.75V, 1%
The True Ground headphone amplifier eliminates the
THD+N
physically large DC blocking output capacitors
reducing required board space and reducing cost.
– R
L
= 8Ω Speaker 1.3W (Typ)
– R
L
= 32Ω Headphone 45mW (Typ)
• Output Power V
DD
LS = 3.3V, V
DD
HP = 2.75V,
1% THD+N
– R
L
= 8Ω Speaker 540W (Typ)
– R
L
= 32Ω Headphone 40mW (Typ)
• PSRR: V
DD
= 3.3V, 217Hz Ripple, Mono In:
90dB (Typ)
• Shutdown Power Supply Current: 0.01μA (Typ)
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2009–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
器件 Datasheet 文档搜索
AiEMA 数据库涵盖高达 72,405,303 个元件的数据手册，每天更新 5,000 多个 PDF 文件
