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发布者:微桥 发布时间:2011-10-21 阅读:4363次    关键字: 音频功放
EMA2217-2W STEREO AUDIO POWER AMPLIFIER


EMA2217-2W STEREO AUDIO POWER AMPLIFIER WITH FOUR SELECTABLE GAIN SETTINGS DataSheet 

General Description
    The EMA2217 is a stereo audio power amplifier in a 20-pin TSSOP thermally enhanced package capable of driving 2W of continuous RMS power per channel into 4Ω loads. Internal gain control minimizes the number of external components needed, simplifying the design, and freeing up board space for other features. Amplifier gain is internally configured and controlled by way of two terminals (G0 and G1). Gain settings of 6 dB, 10 dB, 15.6 dB, and 21.6 dB are provided. EMP products are Pb-free and RoHS compliant.

Features
.Internal Gain control Which Eliminates External Gain-Setting Resistors
.Fully Differential Configuration
.Low Supply Current (6mA Typical)
.De-pop Citcuitry

Applications
.Notebook Computers, PDAs, and Other Portable Audio devices

ESMT_EMP 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

EMA1201

 2W Stereo with Shutdown Mode

 2 (4ohm, 5V, 10%THD+N)

 0.03 (0.25W, 8ohm, 1KHz)

 60

 2.5

 5.5

 0.1

 N/A

 TQFN-16

EMA2202

 2.4W Stereo with DC Vol Control and Selectable Gain

 3 (3ohm, 5V, 10%THD+N)

 0.3 (1W, 8ohm, 1KHz)

 60

 2.7

 5.5

 0.1

 Yes

 TSSOP-28FD

EMA2203

 2.4W Stereo with DC Vol Control and Headphone

 3 (3ohm, 5V, 10%THD+N)

 0.3 (1W, 8ohm, 1KHz)

 60

 2.7

 5.5

 0.1

 Yes

 TSSOP-20FD

EMA2204

 2.7W Stereo Fully Differential

 2.7 (4ohm, 5V, 10%THD+N)

 0.01 (0.25W, 8ohm, 1KHz, 3.6V)

 65

 2.2

 5.5

 0.1

 N/A

 TSSOP-20FD, TQFN-20

EMA2217

 2W Stereo with 4 Selectable Gain Setting

 2.45 (4ohm, 5V, 10%THD+N)

 0.06 (1.5W, 4ohm, 1KHz)

 75

 2.5

 5.5

 0.1

 N/A

 TSSOP-20FD

EMA1286/1288

 2W Stereo Audio Power Amplifier with Headphone Sense

 2(4ohm, 5V, 10%THD+N)

 0.15(0.25W, 8ohm, 1KHz)

 60

 2.5

 5.5

 0.1

 Yes (up to 225mW)

 TQFN-16

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