제품 상세 정보

Output power (W) 0.053 Analog supply (min) (V) 2 Analog supply voltage (max) (V) 4 Load (min) (Ω) 16 PSRR (dB) 82 Rating Catalog Operating temperature range (°C) -40 to 85 Headphone channels Stereo Volume control Yes Shutdown current (ISD) (µA) 0.1 Architecture Class-AB (ground-centered) Iq per channel (typ) (mA) 1.5
Output power (W) 0.053 Analog supply (min) (V) 2 Analog supply voltage (max) (V) 4 Load (min) (Ω) 16 PSRR (dB) 82 Rating Catalog Operating temperature range (°C) -40 to 85 Headphone channels Stereo Volume control Yes Shutdown current (ISD) (µA) 0.1 Architecture Class-AB (ground-centered) Iq per channel (typ) (mA) 1.5
DSBGA (YZR) 16 5.0625 mm² 2.25 x 2.25
  • Ground Referenced Outputs
  • Differential Inputs
  • I2C Volume and Mode Controls
  • Available in Space-Saving DSBGA Package
  • Ultra Low Current Shutdown Mode
  • Advanced Output Transient Suppression Circuitry Eliminates Noises During Turn-On and Turn-Off Transitions
  • 2.0V to 4.0V Operation (PVDD and SVDD)
  • 1.8 to 4.0V Operation (I2CVDD)
  • No Output Coupling Capacitors, Snubber Networks, Bootstrap Capacitors, or Gain-Setting Resistors Required

Key Specifications

  • Improved PSRR at 217Hz: 82dB (typ)
  • Stereo Output Power at VDD = 3V, RL = 16Ω, THD+N = 1%: 52mW (typ)
  • Mono Output Power at VDD = 3V, RL = 16Ω, THD+N = 1%: 93mW (typ)
  • Shutdown current: 0.1μA (typ)

All trademarks are the property of their respective owners.

  • Ground Referenced Outputs
  • Differential Inputs
  • I2C Volume and Mode Controls
  • Available in Space-Saving DSBGA Package
  • Ultra Low Current Shutdown Mode
  • Advanced Output Transient Suppression Circuitry Eliminates Noises During Turn-On and Turn-Off Transitions
  • 2.0V to 4.0V Operation (PVDD and SVDD)
  • 1.8 to 4.0V Operation (I2CVDD)
  • No Output Coupling Capacitors, Snubber Networks, Bootstrap Capacitors, or Gain-Setting Resistors Required

Key Specifications

  • Improved PSRR at 217Hz: 82dB (typ)
  • Stereo Output Power at VDD = 3V, RL = 16Ω, THD+N = 1%: 52mW (typ)
  • Mono Output Power at VDD = 3V, RL = 16Ω, THD+N = 1%: 93mW (typ)
  • Shutdown current: 0.1μA (typ)

All trademarks are the property of their respective owners.

With its directly-coupled output technology, the LM48821 is a variable gain audio power amplifier capable of delivering 52mWRMS per channel into a 16Ω single-ended load with less than 1% THD+N from a 3V power supply. The I2C volume control has a range of –76dB to 18dB.

The LM48821's Tru-GND technology utilizes advanced charge pump technology to generate the LM48821’s negative supply voltage. This eliminates the need for output-coupling capacitors typically used with single-ended loads.

Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM48821 does not require output coupling capacitors or bootstrap capacitors, and therefore, is ideally suited for mobile phone and other low voltage applications where minimal power consumption is a primary requirement.

The LM48821 incorporates selectable low-power consumption shutdown and channel select modes.

The LM48821 contains advanced output transient suppression circuitry that eliminates noises which would otherwise occur during turn-on and turn-off transitions.

With its directly-coupled output technology, the LM48821 is a variable gain audio power amplifier capable of delivering 52mWRMS per channel into a 16Ω single-ended load with less than 1% THD+N from a 3V power supply. The I2C volume control has a range of –76dB to 18dB.

The LM48821's Tru-GND technology utilizes advanced charge pump technology to generate the LM48821’s negative supply voltage. This eliminates the need for output-coupling capacitors typically used with single-ended loads.

Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM48821 does not require output coupling capacitors or bootstrap capacitors, and therefore, is ideally suited for mobile phone and other low voltage applications where minimal power consumption is a primary requirement.

The LM48821 incorporates selectable low-power consumption shutdown and channel select modes.

The LM48821 contains advanced output transient suppression circuitry that eliminates noises which would otherwise occur during turn-on and turn-off transitions.

다운로드 스크립트와 함께 비디오 보기 동영상

기술 자료

star =TI에서 선정한 이 제품의 인기 문서
검색된 결과가 없습니다. 검색어를 지우고 다시 시도하십시오.
2개 모두 보기
유형 직함 날짜
* Data sheet Direct Coupled, Ultra Low Noise, 52mW Diff Input Stereo Hp Amp w/I2C Vol Cntrl datasheet (Rev. A) 2013/05/03
EVM User's guide AN-1589 LM48821 Evaluation Board User's Guide (Rev. A) 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) 16 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