전자부품 데이터시트 검색엔진
  Korean  ▼
ALLDATASHEET.CO.KR

X  

LM49155 데이터시트(PDF) 1 Page - Texas Instruments

Click here to check the latest version.
부품명 LM49155
상세설명  Uplink Noise Suppression & Downlink SNR Enhancement Analog Audio Subsystem
Download  10 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
제조업체  TI1 [Texas Instruments]
홈페이지  http://www.ti.com
Logo TI1 - Texas Instruments

LM49155 데이터시트(HTML) 1 Page - Texas Instruments

  LM49155 Datasheet HTML 1Page - Texas Instruments LM49155 Datasheet HTML 2Page - Texas Instruments LM49155 Datasheet HTML 3Page - Texas Instruments LM49155 Datasheet HTML 4Page - Texas Instruments LM49155 Datasheet HTML 5Page - Texas Instruments LM49155 Datasheet HTML 6Page - Texas Instruments LM49155 Datasheet HTML 7Page - Texas Instruments LM49155 Datasheet HTML 8Page - Texas Instruments LM49155 Datasheet HTML 9Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 1 / 10 page
background image
LM49155
www.ti.com
SNAS492 – JULY 2010
LM49155
PRODUCT BRIEF
Uplink Noise Suppression & Downlink
SNR Enhancement Analog Audio Subsystem
Check for Samples: LM49155
1
FEATURES
E2S Class D Amplifier with ALC
Ground Referenced Headphone Outputs with
2
Noise cancellation for uplink and downlink
Advanced Click Pop Suppression
without DSP-type artifacts, distortions or
delays
Micro-power shutdown
Adapting AGC on ambient noise level &
APPLICATIONS
downlink signal strength for earpiece
Downlink adjustable noise-reducing high pass
Mobile Phones
filter
Portable Electronic Devices
DESCRIPTION
The LM49155 is a fully integrated audio subsystem designed for portable handheld applications such as cellular
phones. The LM49155 combines a Noise Suppression microphone amplifier, a 1.35W mono class D amplifier
with ALC, class AB earpiece driver with AGC, a high efficiency, stereo, ground referenced headphone amplifier
with click pop suppression and I2C modes select and volume control.
The LM49155 features analog fully differential input, and differential output microphone amplifier designed to
reduce background acoustic noise, while delivering superb speech clarity in voice communication applications.
Downlink SNR enhancement with an advanced acoustic AGC technology to adjust output levels.
The LM49155 speaker amplifier features National’s unique output limiter that provides both a no-clip feature and
speaker protection. The E2S class D amplifier features a patented, ultra low EMI PWM architecture that
significantly reduces RF emissions while preserving audio quality and efficiency. The headphone drivers feature
National’s ground referenced architecture that creates a ground-referenced output from a single, low-voltage
supply.
The LM49155 is available in an ultra-small 36-bump micro SMD package (3.434mm x 3.459mm x 0.6mm).
Notice: This document is not a full datasheet. For more information regarding this product or to order
samples
please
contact
your
local
National
Semiconductor
sales
office
or
visit
http://www.national.com/support/dir.html
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
Table 1. Key Specifications
VALUE
UNIT
Uplink Far Field Noise Suppression
34
dB (typ)
Electrical FFNSE at f = 1kHz
Near-Field SNR Enhancement
6 to 18
Downlink SNR Enhancement Earpiece Amplifier
dB (typ)
Downlink SNRIE
16
Class D Loudspeaker Amplifier RL = 15μH+8Ω+15μH
1.35
W (typ)
POUT, THD+N ≤ %, VDD = 5.0V
Headphone Amplifier RL = 32Ω
19
mW (typ)
POUT, THD+N ≤ %, HPVDD = 1.8V
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.
2
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2010, 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.


유사한 부품 번호 - LM49155

제조업체부품명데이터시트상세설명
logo
Texas Instruments
LM49155 TI1-LM49155 Datasheet
222Kb / 8P
[Old version datasheet]   Uplink Noise Suppression & Downlink SNR Enhancement Analog Audio Subsystem
LM49155TL TI1-LM49155TL Datasheet
222Kb / 8P
[Old version datasheet]   Uplink Noise Suppression & Downlink SNR Enhancement Analog Audio Subsystem
LM49155TLX TI1-LM49155TLX Datasheet
222Kb / 8P
[Old version datasheet]   Uplink Noise Suppression & Downlink SNR Enhancement Analog Audio Subsystem
More results

유사한 설명 - LM49155

제조업체부품명데이터시트상세설명
logo
Texas Instruments
LM49155 TI1-LM49155 Datasheet
222Kb / 8P
[Old version datasheet]   Uplink Noise Suppression & Downlink SNR Enhancement Analog Audio Subsystem
LMV1099 TI1-LMV1099 Datasheet
720Kb / 26P
[Old version datasheet]   Uplink Far Field Noise Suppression & Downlink SNR Enhancing Microphone Amplifier with Earpiece Driver
LMV1099 TI1-LMV1099_15 Datasheet
940Kb / 27P
[Old version datasheet]   LMV1099 Uplink Far Field Noise Suppression and Downlink SNR Enhancing Microphone Amplifier with Earpiece Driver
logo
Maxim Integrated Produc...
MAX97003 MAXIM-MAX97003 Datasheet
4Mb / 48P
   High-Efficiency, Low-Noise Audio Subsystem
Rev 0; 9/11
logo
Texas Instruments
TLC320AD80 TI1-TLC320AD80 Datasheet
235Kb / 37P
[Old version datasheet]   Audio Processor Subsystem
TLC320AD80C TI-TLC320AD80C Datasheet
219Kb / 36P
[Old version datasheet]   Audio Processor Subsystem
logo
TDK Electronics
VAF201610FA-1 TDK-VAF201610FA-1 Datasheet
209Kb / 4P
   Noise suppression filter For audio lines
logo
ON Semiconductor
NLAS6233 ONSEMI-NLAS6233 Datasheet
117Kb / 9P
   Audio DPDT Switch with Noise Suppression
October, 2007 - Rev. 0
NLAS6234 ONSEMI-NLAS6234 Datasheet
118Kb / 9P
   Audio DPDT Switch with Noise Suppression
October, 2007 - Rev. 1
logo
Renesas Technology Corp
ISL99203 RENESAS-ISL99203 Datasheet
1Mb / 16P
   High Efficiency Audio Subsystem
More results


Html Pages

1 2 3 4 5 6 7 8 9 10


데이터시트 다운로드

Go To PDF Page


링크 URL




개인정보취급방침
ALLDATASHEET.CO.KR
ALLDATASHEET 가 귀하에 도움이 되셨나요?  [ DONATE ] 

Alldatasheet는?   |   광고문의   |   운영자에게 연락하기   |   개인정보취급방침   |   링크교환   |   제조사별 검색
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com