홈 오디오, 햅틱, 피에조 오디오 증폭기 범용 오디오 증폭기
홈
오디오, 햅틱, 피에조
오디오 증폭기
범용 오디오 증폭기

LM4674A

활성

Filterless 2.5 스테레오 클래스 D 오디오 전원 앰프

지금 주문하기
데이터 시트

LM4674A

활성
데이터 시트 지금 주문하기

제품 상세 정보

Audio input type Analog Input Architecture Class-D Speaker channels (max) Stereo Control interface Hardware Output power (W) 1.2 Power stage supply (max) (V) 5.5 Power stage supply (min) (V) 2.4 THD + N at 1 kHz (%) 0.07 Load (min) (Ω) 4 Analog supply voltage (min) (V) 2.4 Analog supply voltage (max) (V) 5.5 Rating Catalog Operating temperature range (°C) -40 to 85
Audio input type Analog Input Architecture Class-D Speaker channels (max) Stereo Control interface Hardware Output power (W) 1.2 Power stage supply (max) (V) 5.5 Power stage supply (min) (V) 2.4 THD + N at 1 kHz (%) 0.07 Load (min) (Ω) 4 Analog supply voltage (min) (V) 2.4 Analog supply voltage (max) (V) 5.5 Rating Catalog Operating temperature range (°C) -40 to 85
DSBGA (YZR) 16 5.0625 mm² (— mm × — mm)
  • Output Short Circuit Protection
  • Stereo Class D Operation
  • No Output Filter Required
  • Logic Selectable Gain
  • Independent Shutdown Control
  • Minimum External Components
  • Click and Pop Suppression
  • Micro-Power Shutdown
  • Available in Space-Saving 2mm x 2mm x 0.6mm DSBGA Package

Key Specifications

  • Efficiency at 3.6V, 100mW into 8Ω 80% (typ)
  • Efficiency at 3.6V, 500mW into 8Ω 85% (typ)
  • Efficiency at 5V, 1W into 8Ω 85% (typ)
  • Quiescent Power Supply Current at 3.6V Supply 4mA
  • Power Output at VDD = 5V, RL = 4Ω, THD ≤ 10% 2.5W (typ)
  • Power Output at VDD = 5V, RL = 8Ω, THD ≤ 10% 1.5W (typ)
  • Shutdown Current 0.1μA (typ)

All trademarks are the property of their respective owners.

  • Output Short Circuit Protection
  • Stereo Class D Operation
  • No Output Filter Required
  • Logic Selectable Gain
  • Independent Shutdown Control
  • Minimum External Components
  • Click and Pop Suppression
  • Micro-Power Shutdown
  • Available in Space-Saving 2mm x 2mm x 0.6mm DSBGA Package

Key Specifications

  • Efficiency at 3.6V, 100mW into 8Ω 80% (typ)
  • Efficiency at 3.6V, 500mW into 8Ω 85% (typ)
  • Efficiency at 5V, 1W into 8Ω 85% (typ)
  • Quiescent Power Supply Current at 3.6V Supply 4mA
  • Power Output at VDD = 5V, RL = 4Ω, THD ≤ 10% 2.5W (typ)
  • Power Output at VDD = 5V, RL = 8Ω, THD ≤ 10% 1.5W (typ)
  • Shutdown Current 0.1μA (typ)

All trademarks are the property of their respective owners.

The LM4674A is a single supply, high efficiency, 2.5W/channel, filterless switching audio amplifier. A low noise PWM architecture eliminates the output filter, reducing external component count, board area consumption, system cost, and simplifying design.

The LM4674A is designed to meet the demands of mobile phones and other portable communication devices. Operating from a single 5V supply, the device is capable of delivering 2.5W/channel of continuous output power to a 4Ω load with less than 10% THD+N. Flexible power supply requirements allow operation from 2.4V to 5.5V.

The LM4674A features high efficiency compared to conventional Class AB amplifiers. When driving an 8Ω speaker from a 3.6V supply, the device features 85% efficiency at PO = 500mW. Four gain options are pin selectable through the GAIN0 and GAIN1 pins.

Output short circuit protection prevents the device from being damaged during fault conditions. Superior click and pop suppression eliminates audible transients on power-up/down and during shutdown. Independent left/right shutdown controls maximizes power savings in mixed mono/stereo applications.

The LM4674A is a single supply, high efficiency, 2.5W/channel, filterless switching audio amplifier. A low noise PWM architecture eliminates the output filter, reducing external component count, board area consumption, system cost, and simplifying design.

The LM4674A is designed to meet the demands of mobile phones and other portable communication devices. Operating from a single 5V supply, the device is capable of delivering 2.5W/channel of continuous output power to a 4Ω load with less than 10% THD+N. Flexible power supply requirements allow operation from 2.4V to 5.5V.

The LM4674A features high efficiency compared to conventional Class AB amplifiers. When driving an 8Ω speaker from a 3.6V supply, the device features 85% efficiency at PO = 500mW. Four gain options are pin selectable through the GAIN0 and GAIN1 pins.

Output short circuit protection prevents the device from being damaged during fault conditions. Superior click and pop suppression eliminates audible transients on power-up/down and during shutdown. Independent left/right shutdown controls maximizes power savings in mixed mono/stereo applications.
filter 기타 범용 오디오 증폭기 찾기
다운로드 스크립트와 함께 비디오 보기 비디오

기술 자료

검색된 결과가 없습니다. 검색어를 지우고 다시 시도하세요.
4개 모두 보기
상위 문서 유형 직함 형식 옵션 최신 영어 버전 다운로드 날짜
* 데이터 시트 LM4674A  Filterless 2.5W Stereo Class D Audio Power Amplifier datasheet (Rev. A) 2013. 5. 1
애플리케이션 노트 Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) 2019. 8. 26
애플리케이션 노트 AN-1849 An Audio Amplifier Power Supply Design (Rev. C) 2019. 6. 27
애플리케이션 노트 AN-1737 Managing EMI in Class D Audio Applications (Rev. A) 2013. 5. 1

설계 및 개발

추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.

패키지 핀 CAD 기호, 풋프린트 및 3D 모델
DSBGA (YZR) 16 Ultra Librarian
TI의 평가 항목에 대한 표준 약관이 적용됩니다.

주문 및 품질

지원 및 교육

TI 엔지니어의 기술 지원을 받을 수 있는 TI E2E™ 포럼

포럼 주제 모두 보기(영문)

콘텐츠는 TI 및 커뮤니티 기고자에 의해 "있는 그대로" 제공되며 TI의 사양으로 간주되지 않습니다. 사용 약관을 참조하십시오.

품질, 패키징, TI에서 주문하는 데 대한 질문이 있다면 TI 지원을 방문하세요. ​​​​​​​​​​​​​​

동영상