LM49120

활성

I2C 인터페이스를 지원하는 1.3W, 스테레오, 아날로그 입력 클래스 AB 오디오 증폭기

지금 주문

데이터 시트

document-pdfAcrobat Audio Subsystem with Mono Class AB Loudspeaker Amp & Stereo OCL/SE Headphone Amp datasheet (Rev. C) (영어)

LM49120

활성

데이터 시트

지금 주문

제품 상세 정보

Rating

Catalog

Operating temperature range (°C)

-40 to 85

Rating

Catalog

Operating temperature range (°C)

-40 to 85

DSBGA (YZR)

16

5.0625 mm² 2.25 x 2.25

RF Immunity
Selectable OCL/SE Headphone Drivers
32 Step Volume Control
Click and Pop Suppression
Independent Speaker and Headphone Gain Settings
Minimum External Components
Thermal Over Load Protection
Micro-power Shutdown
Space Saving 16–bump DSBGA Package
Thermal Shutdown Protection
Micro-power Shutdown
I²C Control Interface

Key Specifications

Output Power at VDD = 5V:
- Speaker: RL = 8Ω BTL, THD+N ≤ 1%: 1.3W (typ)
- Headphone: RL = 32Ω, SE, THD+N ≤ 1%: 85mW (typ)
Output Power at VDD = 3.6V:
- Speaker: RL = 8Ω, BTL, THD+N ≤ 1%: 632mW (typ)
Output Power at VDD = 3.3V:
- Speaker: RL = 8Ω, BTL, THD+N ≤ 1%: 540mW (typ)
- Headphone: RL = 32Ω, OCL/SE, THD+N ≤ 1%: 35mW (typ)

All trademarks are the property of their respective owners.

RF Immunity
Selectable OCL/SE Headphone Drivers
32 Step Volume Control
Click and Pop Suppression
Independent Speaker and Headphone Gain Settings
Minimum External Components
Thermal Over Load Protection
Micro-power Shutdown
Space Saving 16–bump DSBGA Package
Thermal Shutdown Protection
Micro-power Shutdown
I²C Control Interface

Key Specifications

Output Power at VDD = 5V:
- Speaker: RL = 8Ω BTL, THD+N ≤ 1%: 1.3W (typ)
- Headphone: RL = 32Ω, SE, THD+N ≤ 1%: 85mW (typ)
Output Power at VDD = 3.6V:
- Speaker: RL = 8Ω, BTL, THD+N ≤ 1%: 632mW (typ)
Output Power at VDD = 3.3V:
- Speaker: RL = 8Ω, BTL, THD+N ≤ 1%: 540mW (typ)
- Headphone: RL = 32Ω, OCL/SE, THD+N ≤ 1%: 35mW (typ)

All trademarks are the property of their respective owners.

The LM49120 is a compact audio subsystem designed for portable handheld applications such as cellular phones. The LM49120 combines a mono 1.3W speaker amplifier, stereo 85mW/ch output capacitorless headphone amplifier, 32 step volume control, and an input mixer/multiplexer into a single 16–bump DSBGA package.

The LM49120 has three input channels: two single-ended stereo inputs and a differential mono input. Each input features a 32-step digital volume control. The headphone output stage features an 8 step (-18dB – 0dB) attenuator, while the speaker output stage has two selectable (0dB/+6dB) gain settings. The digital volume control and mode control are programmed through a two-wire I²C compatible interface.

The LM49120 is a compact audio subsystem designed for portable handheld applications such as cellular phones. The LM49120 combines a mono 1.3W speaker amplifier, stereo 85mW/ch output capacitorless headphone amplifier, 32 step volume control, and an input mixer/multiplexer into a single 16–bump DSBGA package.

The LM49120 has three input channels: two single-ended stereo inputs and a differential mono input. Each input features a 32-step digital volume control. The headphone output stage features an 8 step (-18dB – 0dB) attenuator, while the speaker output stage has two selectable (0dB/+6dB) gain settings. The digital volume control and mode control are programmed through a two-wire I²C compatible interface.

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