EMA2204-2.7W/Ch Stereo Fully Differential Audio Power Amplifier with Bypass Capacitor Free  DataSheet
General Description
The EMA2204 is a 2.7W/Ch Stereo fully differential amplifier designed to drive a speaker with at least 4Ω impedance. The device operates from 2.2 V to 5.5 V, drawing 9mA(Typ.) of quiescent supply current. The EMA2204 performs superior THD+N and PSRR with no bypass capacitor required.
With no bypass capacitor, the EMA2204 is ideal for PMPs applications due to features such as -65dB supply voltage rejection from 20 Hz to 10kHz, improved RF rectification immunity and a fast startup with minimal pop.
Features
．2.7 W/Ch Into 4Ω From a 5-V Supply at THD = 10% (Typ)
．Low Supply Current: 9mA (Typ) at 5 V
．Shutdown Current: 0.1 μA (Typ)
．Fast Startup With Minimal Pop
．Improved PSRR (-65 dB) and Wide Supply Voltage (2.2
V to 5.5 V) for Direct Battery Operation
．Fully Differential Design Reduces RF Rectification
．-63 dB CMRR Eliminates Two Input Coupling Capacitors
．Available in 3 mm X 3 mm TDFN Package
Applications
． PMPs
． Desktop
． Notebook
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ESMT_EMP Audio Power Amplifier > Class A/B |
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Part Number |
Description |
Po(Max output power, W) |
Typical THD+N (%) |
PSRR (dB) |
Vin min(V) |
Vin max(V) |
Shutdown current (uA) |
Earphone |
Package |
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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 |
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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 |
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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 |
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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 |
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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 |
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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 | |