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Teilenummer | EMA1002-50MA08GRR |
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Beschreibung | 1W Mono Audio Power Amplifier | |
Hersteller | Elite Semiconductor | |
Logo | ||
Gesamt 16 Seiten ESMT/EMP
EMA1002
1W Mono Audio Power Amplifier with Headphone Sense
General Description
The EMA1002 is an audio power amplifier primarily designed
for portable communication applications such as mobile
phones and portable multimedia players (PMP). To an 8Ω
BTL load, it can deliver 1 watt of continuous average power
with less than 1% distortion (THD+N) from a 5VDC supply.
The EMA1002 is pin-compatible to National Semi’s LM4890
with a superior (THD+N). 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 EMA1002 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 EMA1001 is unity-gain stable and can be
configured by external gain-setting resistors.
Key Specifications
PSRR at 217Hz, VDD = 5V (Fig. 1) 60dB(typ.)
Power Output at 5.0V & 1% THD 1W(typ.)
Power Output at 2.6V & 1% THD 250mW(typ.)
Shutdown Current
0.1µA(typ.)
Features
Available in space-saving MSOP package
Ultra low current shutdown mode
BTL output driving capacitive loads
Improved pop & click circuitry eliminating noises
during turn-on and turn-off transitions
2.2 - 5.5V operation
No output coupling capacitors, snubber networks or
bootstrap capacitors required
Thermal shutdown protection
Unity-gain stable
External gain configuration capability
Headphone amplifier mode
Applications
Mobile Phones
PDAs and PMPs
Portable Electronic Device
Connection Diagram
MSOP Package
Order information
EMA1002-50MA08GRR/NRR
50 5.0V Operation
MA08 MSOP-8 Package
GRR RoHS (Pb Free)
Rating: -40 to 85°C
Package in Tape & Reel
NRR
RoHS & Halogen free (By Request)
Rating: -40 to 85°C
Package in Tape & Reel
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date : May. 2009
Revision : 4.0
1/16
ESMT/EMP
Typical Performance Characteristics
EMA1002
THD + Noise vs Output Power
@ VDD = 5.0V, RL = 8Ω, 1kHz, AV = 2
PSRR vs Frequency
@ VDD = 5.0V, RL = 8Ω, AV = 2
THD + Noise vs Output Power
@ VDD = 2.6V, RL = 8Ω, 1kHz, AV = 2
PSRR vs Frequency
@ VDD = 2.6V, RL = 8Ω, AV = 2
+ Noise vs Output Power, Headphone mode
@ VDD = 5V, RL = 32Ω, 1kHz, AV = 1
THD
f=1KHz, RL=8ohm, Av=2, C3=C1=1uF, BW=60KHz
(X=Supply Voltage, Y=Power Out)
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date : May. 2009
Revision : 4.0
6/16
6 Page ESMT/EMP
EMA1002
FIGURE 4. COMPONENT SIDE & TOP LAYER OF REFERENCE DESIGN
FIGURE 5. BOTTOM LAYER OF REFERENCE DESIGN
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date : May. 2009
Revision : 4.0
12/16
12 Page | ||
Seiten | Gesamt 16 Seiten | |
PDF Download | [ EMA1002-50MA08GRR Schematic.PDF ] |
Teilenummer | Beschreibung | Hersteller |
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