제품 상세 정보

Speaker channels (max) Mono Rating Catalog Load (min) (Ω) 4 Output power (W) 3 SNR (dB) 93 THD + N at 1 kHz (%) 0.35 Iq (typ) (mA) 7 Control interface Hardware Analog supply (min) (V) 2.4 Analog supply voltage (max) (V) 5.5 PSRR (dB) 68 Operating temperature range (°C) -40 to 85
Speaker channels (max) Mono Rating Catalog Load (min) (Ω) 4 Output power (W) 3 SNR (dB) 93 THD + N at 1 kHz (%) 0.35 Iq (typ) (mA) 7 Control interface Hardware Analog supply (min) (V) 2.4 Analog supply voltage (max) (V) 5.5 PSRR (dB) 68 Operating temperature range (°C) -40 to 85
DSBGA (YZR) 9 3.0625 mm² 1.75 x 1.75 WSON (NGQ) 8 9 mm² 3 x 3
  • No Output Filter Required for Inductive Loads
  • Externally Configurable Gain
  • Very Fast Turn on Time: 1.35ms (Typ)
  • Minimum External Components
  • "Click and Pop" Suppression Circuitry
  • Micro-Power Shutdown Mode
  • Short Circuit Protection
  • Available in Space-Saving DSBGA and WSON Packages

Key Specifications

  • Efficiency at 3.6V, 100mW into 8Ω Speaker, 77% (Typ)
  • Efficiency at 3.6V, 600mW into 8Ω Speaker, 88% (Typ)
  • Efficiency at 5V, 1W into 8Ω Speaker, 87% (Typ)
  • Quiescent Current, 3.6V Supply, 4.8mA (Typ)
  • Total Shutdown Power Supply Current, 0.01µA (Typ)
  • Single Supply Range, 2.4 to 5.5V

Boomer is a trademark of Texas Instruments. All trademarks are the property of their respective owners.

  • No Output Filter Required for Inductive Loads
  • Externally Configurable Gain
  • Very Fast Turn on Time: 1.35ms (Typ)
  • Minimum External Components
  • "Click and Pop" Suppression Circuitry
  • Micro-Power Shutdown Mode
  • Short Circuit Protection
  • Available in Space-Saving DSBGA and WSON Packages

Key Specifications

  • Efficiency at 3.6V, 100mW into 8Ω Speaker, 77% (Typ)
  • Efficiency at 3.6V, 600mW into 8Ω Speaker, 88% (Typ)
  • Efficiency at 5V, 1W into 8Ω Speaker, 87% (Typ)
  • Quiescent Current, 3.6V Supply, 4.8mA (Typ)
  • Total Shutdown Power Supply Current, 0.01µA (Typ)
  • Single Supply Range, 2.4 to 5.5V

Boomer is a trademark of Texas Instruments. All trademarks are the property of their respective owners.

The LM4670 is a fully integrated single-supply high efficiency switching audio amplifier. It features an innovative modulator that eliminates the LC output filter used with typical switching amplifiers. Eliminating the output filter reduces external component count, simplifies circuit design, and reduces board area. The LM4670 processes analog inputs with a delta-sigma modulation technique that lowers output noise and THD when compared to conventional pulse width modulators.

The LM4670 is designed to meet the demands of mobile phones and other portable communication devices. Operating on a single 5V supply, it is capable of driving a 4Ω speaker load at a continuous average output of 2.3W with less than 1% THD+N. Its flexible power supply requirements allow operation from 2.4V to 5.5V.

The LM4670 has high efficiency with speaker loads compared to a typical Class AB amplifier. With a 3.6V supply driving an 8Ω speaker, the IC's efficiency for a 100mW power level is 77%, reaching 88% at 600mW output power.

The LM4670 features a low-power consumption shutdown mode. Shutdown may be enabled by driving the Shutdown pin to a logic low (GND).

The gain of the LM4670 is externally configurable which allows independent gain control from multiple sources by summing the signals.

The LM4670 is a fully integrated single-supply high efficiency switching audio amplifier. It features an innovative modulator that eliminates the LC output filter used with typical switching amplifiers. Eliminating the output filter reduces external component count, simplifies circuit design, and reduces board area. The LM4670 processes analog inputs with a delta-sigma modulation technique that lowers output noise and THD when compared to conventional pulse width modulators.

The LM4670 is designed to meet the demands of mobile phones and other portable communication devices. Operating on a single 5V supply, it is capable of driving a 4Ω speaker load at a continuous average output of 2.3W with less than 1% THD+N. Its flexible power supply requirements allow operation from 2.4V to 5.5V.

The LM4670 has high efficiency with speaker loads compared to a typical Class AB amplifier. With a 3.6V supply driving an 8Ω speaker, the IC's efficiency for a 100mW power level is 77%, reaching 88% at 600mW output power.

The LM4670 features a low-power consumption shutdown mode. Shutdown may be enabled by driving the Shutdown pin to a logic low (GND).

The gain of the LM4670 is externally configurable which allows independent gain control from multiple sources by summing the signals.

다운로드 스크립트와 함께 비디오 보기 동영상

기술 자료

star =TI에서 선정한 이 제품의 인기 문서
검색된 결과가 없습니다. 검색어를 지우고 다시 시도하십시오.
1개 모두 보기
유형 직함 날짜
* Data sheet LM4670  Filterless High Efficiency 3W Switching Audio Amplifier datasheet (Rev. C) 2013/05/02

설계 및 개발

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

시뮬레이션 툴

PSPICE-FOR-TI — TI 설계 및 시뮬레이션 툴용 PSpice®

TI용 PSpice®는 아날로그 회로의 기능을 평가하는 데 사용되는 설계 및 시뮬레이션 환경입니다. 완전한 기능을 갖춘 이 설계 및 시뮬레이션 제품군은 Cadence®의 아날로그 분석 엔진을 사용합니다. 무료로 제공되는 TI용 PSpice에는 아날로그 및 전력 포트폴리오뿐 아니라 아날로그 행동 모델에 이르기까지 업계에서 가장 방대한 모델 라이브러리 중 하나가 포함되어 있습니다.

TI 설계 및 시뮬레이션 환경용 PSpice는 기본 제공 라이브러리를 이용해 복잡한 혼합 신호 설계를 시뮬레이션할 수 있습니다. 레이아웃 및 제작에 (...)
패키지 CAD 기호, 풋프린트 및 3D 모델
DSBGA (YZR) 9 Ultra Librarian
WSON (NGQ) 8 Ultra Librarian

주문 및 품질

포함된 정보:
  • RoHS
  • REACH
  • 디바이스 마킹
  • 납 마감/볼 재질
  • MSL 등급/피크 리플로우
  • MTBF/FIT 예측
  • 물질 성분
  • 인증 요약
  • 지속적인 신뢰성 모니터링
포함된 정보:
  • 팹 위치
  • 조립 위치

권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.

지원 및 교육

TI 엔지니어의 기술 지원을 받을 수 있는 TI E2E™ 포럼

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