제품 상세 정보

Number of ADC channels 1 Number of DAC channels 3 Digital audio interface I2S, PCM Analog inputs 2 Analog outputs 3 Sampling rate (max) (kHz) 48 Rating Catalog ADC SNR (typ) (dB) 81 DAC SNR (typ) (dB) 86 Operating temperature range (°C) -40 to 85
Number of ADC channels 1 Number of DAC channels 3 Digital audio interface I2S, PCM Analog inputs 2 Analog outputs 3 Sampling rate (max) (kHz) 48 Rating Catalog ADC SNR (typ) (dB) 81 DAC SNR (typ) (dB) 86 Operating temperature range (°C) -40 to 85
DSBGA (YZR) 42 12.1875 mm² 3.75 x 3.25
  • 18-bit 44.1kHz or 48kHz Stereo DAC
  • 16-bit 8kHz , 12kHz , 16kHz, or 24kHz Voice-Band Codec
  • PLL for Operation from Common System Clocks
  • Either I2C or SPI Compatible Serial Interface
  • I2S Digital Audio Data Serial Interface
  • PCM Voice Audio Data Serial Interface
  • Differential Analog Microphone Input
  • 26mW/Channel Stereo Headphone Amplifier
  • 570mW Mono High Efficiency BTL 8Ω Amplifier
  • 32-step Volume Control for Audio Output Amplifiers with 1.5dB Step Size.
  • Unity-Gain Stable Headphone Amplifiers
  • No Snubber Networks or Bootstrap Capacitors are Required by the Headphone or Hands-Free Amplifiers
  • Adjustable Digital Side-Tone Attenuation
  • 16-step Volume Control for Microphone Preamp with 2dB Step Size
  • Configurable GPIO/Status Port
  • Available in the 42 bump DSBGA Package

Key Specifications

  • PLS OUT at AVDD = 5V, 8Ω
    • 1% THD+N, 1.1W (Typ)
  • PLS OUT at AVDD = 3.3V, 8Ω
    • 1% THD+N, 570mW (Typ)
  • PH/P OUT at AVDD = 5V & AVDD = 3.3V, 32Ω
    • 1% THD+N, 26mW (Typ)
  • Supply Voltage Range
    • DVDD, 2.7V to 4.0V
    • AVDD, 2.7V to 5.0V
  • Shutdown Current, 1.1µA
  • PSRR at 217Hz, AVDD = 3V, 62dB (Typ)
  • SNR (Voice Codec), 75dB (Typ)
  • SNR (Audio DAC), 86dB (Typ)

All trademarks are the property of their respective owners.

  • 18-bit 44.1kHz or 48kHz Stereo DAC
  • 16-bit 8kHz , 12kHz , 16kHz, or 24kHz Voice-Band Codec
  • PLL for Operation from Common System Clocks
  • Either I2C or SPI Compatible Serial Interface
  • I2S Digital Audio Data Serial Interface
  • PCM Voice Audio Data Serial Interface
  • Differential Analog Microphone Input
  • 26mW/Channel Stereo Headphone Amplifier
  • 570mW Mono High Efficiency BTL 8Ω Amplifier
  • 32-step Volume Control for Audio Output Amplifiers with 1.5dB Step Size.
  • Unity-Gain Stable Headphone Amplifiers
  • No Snubber Networks or Bootstrap Capacitors are Required by the Headphone or Hands-Free Amplifiers
  • Adjustable Digital Side-Tone Attenuation
  • 16-step Volume Control for Microphone Preamp with 2dB Step Size
  • Configurable GPIO/Status Port
  • Available in the 42 bump DSBGA Package

Key Specifications

  • PLS OUT at AVDD = 5V, 8Ω
    • 1% THD+N, 1.1W (Typ)
  • PLS OUT at AVDD = 3.3V, 8Ω
    • 1% THD+N, 570mW (Typ)
  • PH/P OUT at AVDD = 5V & AVDD = 3.3V, 32Ω
    • 1% THD+N, 26mW (Typ)
  • Supply Voltage Range
    • DVDD, 2.7V to 4.0V
    • AVDD, 2.7V to 5.0V
  • Shutdown Current, 1.1µA
  • PSRR at 217Hz, AVDD = 3V, 62dB (Typ)
  • SNR (Voice Codec), 75dB (Typ)
  • SNR (Audio DAC), 86dB (Typ)

All trademarks are the property of their respective owners.

The LM4931 is an integrated audio subsystem that supports voice and digital audio functions. The LM4931 includes a high quality stereo DAC, voice band codec, a stereo headphone amplifier and a high-power high efficiency mono speaker amplifier. It is primarily designed for demanding applications in mobile phones and other portable devices.

The LM4931 features an I2S serial interface for full range audio, a 16-bit PCM bi-directional serial interface for the voice band codec and an I2C/SPI compatible interface for control. The full range music path features an SNR of 86dB with an 18-bit 48kHz input. The headphone amplifier delivers at least 26mWRMS to a 32Ω single-ended stereo load with less than 1% distortion (THD+N) when AVDD = 3.3VDC. The mono speaker amplifier delivers up to 570mWRMS into an 8Ω load with less than 1% distortion when AVDD = 3.3VDC.

The LM4931 employs advanced techniques to reduce power consumption, to reduce controller overhead, and to eliminate click and pop. Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. It is therefore ideally suited for mobile phone and other low voltage applications where minimal power consumption, PCB area, and cost are primary requirements.

The LM4931 is an integrated audio subsystem that supports voice and digital audio functions. The LM4931 includes a high quality stereo DAC, voice band codec, a stereo headphone amplifier and a high-power high efficiency mono speaker amplifier. It is primarily designed for demanding applications in mobile phones and other portable devices.

The LM4931 features an I2S serial interface for full range audio, a 16-bit PCM bi-directional serial interface for the voice band codec and an I2C/SPI compatible interface for control. The full range music path features an SNR of 86dB with an 18-bit 48kHz input. The headphone amplifier delivers at least 26mWRMS to a 32Ω single-ended stereo load with less than 1% distortion (THD+N) when AVDD = 3.3VDC. The mono speaker amplifier delivers up to 570mWRMS into an 8Ω load with less than 1% distortion when AVDD = 3.3VDC.

The LM4931 employs advanced techniques to reduce power consumption, to reduce controller overhead, and to eliminate click and pop. Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. It is therefore ideally suited for mobile phone and other low voltage applications where minimal power consumption, PCB area, and cost are primary requirements.

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 LM4931 Audio Subsystem w/Mono High Eff Loudspeaker & Stereo Headphone Amps datasheet (Rev. E) 2013/05/01

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) 42 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

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