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EMA1901-50WL09GRR Schematic ( PDF Datasheet ) - Elite Semiconductor

Teilenummer EMA1901-50WL09GRR
Beschreibung 1.25W Mono Audio Power Amplifier
Hersteller Elite Semiconductor
Logo Elite Semiconductor Logo 




Gesamt 14 Seiten
EMA1901-50WL09GRR Datasheet, Funktion
ESMT/EMP
EMA1901
1.25W Mono Audio Power Amplifier
General Description
The EMA1901 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 1.25 watt of continuous average
power with less than 1% distortion (THD+N) from a 5VDC
supply. Typical THD+N is about 0.015% at 1Watt.
The EMA1901 is pin-compatible to National Semi’s LM4890
Micro-SMD package 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 EMA1901 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 EMA1901 is unity-gain stable
and can be configured by external gain-setting resistors.
EMP products are RoHS and Halogen free compliant.
Key Specifications
„ PSRR at 217Hz, VDD = 5V (Fig. 1)
„ Power Output at 5.0V & 1% THD
„ Power Output at 2.6V & 1% THD
„ Shutdown Current
60dB(typ.)
1.25W(typ.)
300mW(typ.)
< 1µA(typ.)
Features
„ Available in space-saving WL-CSP package
„ Ultra low current shutdown mode
„ BTL output driving capacitive loads
„ Improved pop & click circuitry eliminating noises
during turn-on and turn-off transitions
„ 2.5 - 5.5V operation
„ No output coupling capacitors, snubber networks or
bootstrap capacitors required
„ Thermal shutdown protection
„ Unity-gain stable
„ External gain configuration capability
Applications
„ Mobile Phones
„ PDAs and PMPs
„ Portable Electronic Device
Connection Diagram
WL-CSP Package
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date : Aug. 2009
Revision : 5.1
1/14






EMA1901-50WL09GRR Datasheet, Funktion
ESMT/EMP
Typical Performance Characteristics
EMA1901
THD + Noise vs Output Power
@ VDD = 5.0V, RL = 8Ω, 1kHz, AV = 2
THD + Noise vs Frequency
@ VDD = 5.0V, RL = 8Ω, AV = 2
THD + Noise vs Output Power
@ VDD = 2.6V, RL = 8Ω, 1kHz, AV = 2
THD + Noise vs Frequency
@ VDD = 2.6V, RL = 8Ω, AV = 2
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date : Aug. 2009
Revision : 5.1
6/14

6 Page









EMA1901-50WL09GRR pdf, datenblatt
ESMT/EMP
Physical Dimensions (WL-CSP Package)
EMA1901
Symbol
A
A1
A2
D
D1
Z
min.
0.585
0.210
0.355
1.420
Dimensions in millimeter
typ.
0.650
0.235
0.380
1.460
0.5
0.23
max.
0.715
0.260
0.405
1.500
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
12/14
Publication Date : Aug. 2009
Revision : 5.1

12 Page





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