EMA1201-2W Stereo Audio Power Amplifier with Shutdown Mode DataSheet
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
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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 |
|
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 |
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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 | |