微桥科技产品新闻动态管理发布系统 现在是
首页 ·公司动态 ·产品动态 ·原厂动态 ·行业动态 ·技术资料 ·LED驱动 ·DC-DC ·AC-DC ·MOSFET ·音频功放 ·电池管理 ·霍尔及马达驱动 ·其他 ·联系我们

当前位置:首页>>音频功放>>ESMT/EMP晶豪/晶镁 >>EMA1903-1W Fully Differential Audio Amplifier   双击自动滚屏
发布者:微桥 发布时间:2011-10-14 阅读:4027次    关键字: 音频功放
EMA1903-1W Fully Differential Audio Amplifier


EMA1903-1W Fully Differential Audio Power Amplifier with Shutdown Select DataSheet 

General Description
    The EMA1903 is a fully differential audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications. It is capable of delivering 1 watt of continuous average power to an 8Ω BTL load with less than 1% distortion (THD+N) from a 5VDC power supply.
    The EMA1903 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 aprimary requirement.
    The EMA1903 features a low-power consumption shutdown mode. To facilitate this, shutdown may be enabled by either logic high or low depending on mode selection. Driving the shutdown mode pin either high or low enables the shutdown select pin to be driven in a likewise manner to enable Shutdown. Additionally, the EMA1903 features an internal thermal shutdown protection mechanism.
    The EMA1903 contains advanced pop & click circuitry which eliminates noises which would otherwise occur during turn-on and turn-off transitions.
    The EMA1903 is unity-gain stable and can be configured by external gain-setting resistors.

Key Specifications
.Improved PSRR at 217Hz 70dB(typ)
.Power Output at 5.0V,8Ω & 1% THD 1W(typ)
.Power Output at 2.6V,8Ω& 1% THD 300mW(typ)
.Shutdown current 0.1μA (typ)
Features
.Available in space-saving WL-CSP package
.Fully differential amplification
.Ultra low current shutdown mode
.Can drive capacitive loads up to 500 pF
.Improved pop & click circuitry eliminates noises during
turn-on and turn-off transitions
.2.2 - 5.5V operation
.No output coupling capacitors, snubber networks or
bootstrap capacitors required
.Unity-gain stable
.External gain configuration capability
.Shutdown high or low selectivity
.High CMRR
Applications
. Mobile phones
. PDAs
. Portable electronic devices

Audio Power Amplifier > Class A/B

 

Part Number

Description

Po(Max output power, W)

Typical THD+N (%)

PSRR (dB)

Vin min(V)

Vin max(V)

Shutdown current (uA)

Earphone

Package

EMA1001

 1W Mono

 1 (8ohm, 5V, 1%THD+N)

 0.04 (0.4W, 1KHz)

 60

 2.2

 5.5

 0.1

 N/A

 MSOP-8, SOP-8

EMA1002

 1W Mono with Headphone Sense

 1 (8ohm, 5V, 1%THD+N)

 0.04 (0.4W, 1KHz)

 60

 2.2

 5.5

 0.1

 Yes

 MSOP-8

EMA1003

 1.2W Mono Fully Differential with Shutdown Select

 1.2 (8ohm, 5V, 1%THD+N)

 0.008 (0.4W, 8ohm, 1KHz)

 70

 2.2

 5.5

 0.1

 N/A

 MSOP-10 (FD)

EMA1901

 1.25W Mono

 1.25 (8ohm, 5V, 1%THD+N)

 0.01 (0.4W, 1KHz)

 60

 2.5

 5.5

 0.1

 N/A

 WL-CSP

EMA1903

 1W Mono Fully Differential with Shutdown Select

 1 (8ohm, 5V, 1%THD+N)

 0.008 (0.4W, 8ohm, 1KHz)

 73

 2.2

 5.5

 0.1

 N/A

 WL-CSP

EMA2001

 3W Mono with Shutdown mode

 3 (3ohm, 5V, 10%THD+N)

 0.02 (1W, 4ohm, 1KHz)

 60

 2.6

 5.5

 0.1

 N/A

 MSOP-8, TDFN-8

EMA2004

 2.7W Mono Fully Differential

 2.7 (4ohm, 5V, 10%THD+N)

 0.007 (0.6W, 8ohm, 1KHz, 3.6V)

 70

 2.5

 5.5

 0.1

 N/A

 MSOP-8, TDFN-8

EMA2901

 2.5W Mono

 2.5 (4ohm, 5V, 10%THD+N)

 0.05 (1W, 4ohm, 1KHz)

 60

 2.5

 5.5

 0.1

 N/A

 WL-CSP

本文共分 1

  • 上篇文章SPN11T10-N-Channel Enhancement Mode MOSFET
  • 下篇文章EMA2001-3W Audio Power Amplifier
  •  
     

    版权所有 Copyright Micro Bridge Technology Co.,Ltd. All rights reserved.粤ICP备05065909号