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发布者:微桥 发布时间:2011-10-15 阅读:4387次    关键字: 音频功放
EMA1201-2W Stereo Audio Power Amplifier


EMA1201-2W Stereo Audio Power Amplifier with Shutdown ModeDataSheet 

General Description
    The EMA1201 is a stereo bridged audio power amplifier capable of delivering 1.2W of continuous average power into a 8Ω load or 1.7W into 4Ω with less than 1% THD when powered by a 5V power supply. It does not require output coupling capacitors or bootstrap capacitors, and is ideal for mobile phone and other low voltage applications where minimal power consumption is a primary requirement.
    The EMA1201 features a low-power consumption shutdown mode, and an internal thermal shutdown protection mechanism. Advanced pop & click circuitry is built in to eliminate noises that would otherwise occur during turn-on and turn-off transitions. The EMA1201 is unity-gain stable and can be configured by external
gain-setting resistors. EMP products are Pb-free and RoHS compliant.

Key Specifications
.BTL mode PO at THD+N=1%, f=1kHz, VDD =5V
1.7 W (typ) into 4Ω
1.2 W (typ) into 8Ω
.BTL mode PO at THD+N=10%, f=1kHz, VDD =5V
2 W (typ) into 4Ω
1.5 W (typ) into 8Ω
.Shutdown current 0.1μA (typ)
Features
.No output coupling capacitors, bootstrap capacitors,
or snubber circuits required
.Unity-gain stable
.TQFN
.External gain configuration capability
Applications
. Portable Computers
. Desktop computers

 

 

 

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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