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发布者:微桥 发布时间:2011/7/27 阅读:5803次    关键字: EMA1001
EMA1001-1W Mono Audio Power Amplifier


EMA1001-1W Mono Audio Power Amplifier DataSheet 

General Description
The EMA1001 is an 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 8. BTL load with less than 1% distortion (THD+N) from a 5VDC power supply.
Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The EMA1001 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 EMA1001 features a low-power consumption shutdown mode, which is achieved by driving the shutdown pin with logic low. Additionally, the EMA1001 features an internal thermal shutdown protection mechanism.
The EMA1001 contains advanced pop & click circuitry which eliminates noises which would otherwise occur during turn-on and turn-off transitions. The EMA1001 is unity-gain stable and can be configured by external gain-setting resistors.

Key Specifications
◆PSRR at 217Hz, VDD = 5V (Fig. 1) 62dB(typ.)
◆Power Output at 5.0V & 1% THD 1W(typ.)
◆Power Output at 3.3V & 1% THD 400mW(typ.)
◆Shutdown Current 0.1μA(typ.)

Features
◆ Available in space-saving packages: micro SMD, MSOP, SOIC, and LLP
◆Ultra low current shutdown mode
◆BTL output can drive capacitive loads
◆Improved pop & click circuitry eliminates noises during turn-on and turn-off transitions
◆2.2 - 5.5V operation
◆No output coupling capacitors, snubber networks orbootstrap capacitors required
◆Thermal shutdown protection
◆Unity-gain stable
◆External gain configuration capability

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

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