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부품번호 | EMA1901 기능 |
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기능 | 1.25W Mono Audio Power Amplifier | ||
제조업체 | Elite Semiconductor | ||
로고 | |||
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
ESMT/EMP
Absolute Maximum Ratings (Note 2)
Supply Voltage
Storage Temperature
Input Voltage
Power Dissipation (Note 3)
ESD Susceptibility (Note 4)
Junction Temperature
6.0V
-65°C to +150°C
-0.3V to VDD +0.3V
Internally Limited
2kV
150°C
EMA1901
Thermal Resistance
θJA (WL-CSP)
Operating Ratings
Temperature Range
Supply Voltage
180°C/W
-40°C ≦ TA ≦ 85°C
2.6V ≦ VDD ≦ 5.5V
Electrical Characteristics VDD = 5V (Notes 1, 2, 8)
The following specifications apply for the circuit shown in Figure 1 unless otherwise specified. Limits apply for TA = 25°C.
Symbol
Parameter
Conditions
Conditions
Typical
Limit
(Note 6) (Notes 7, 9)
Units
(Limits)
IDD
Quiescent Power Supply
VIN = 0V, Io = 0A, No Load
3
Current
VIN = 0V, 8Ω Load
4
8 mA (max)
10 mA (max)
ISD Shutdown Current
VSHUTDOWN = 0V
0.1 1.0 µA (max)
VSDIH
Shutdown Voltage Input high
1.2 V (min)
VSDIL
Shutdown Voltage Input Low
0.4 V (max)
VOS Output Offset Voltage
5
PO Output Power (8Ω)
THD = 1% (max); f = 1 kHz
1.25
50 mV (max)
1.0 W
TWU Wake-up time
Cbypass = 1µF
100 350 ms (max)
TSD Thermal Shutdown
Temperature
160 140 °C (min)
180 °C (max)
THD+N
Total Harmonic Distortion + PO = 0.4 Wrms; f = 1kHz
Noise
0.01
%
PSRR
Power Supply Rejection Ratio Vripple = 200mV sine p-p
60 (f =217Hz)
(Note 10)
Input Terminated with 10 65 (f = 1kHz)
55
dB (min)
ohms to ground
TSDT Shut Down Time
8Ω load
0.1 ms (max)
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date : Aug. 2009
Revision : 5.1
4/14
4페이지 ESMT/EMP
EMA1901
PSRR vs Frequency
@ VDD = 5.0V, RL = 8Ω, AV = 2
O
NOF
F
PSRR vs Frequency
@ VDD = 2.6V, RL = 8Ω, AV = 2
Output Noise @ 5V
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date : Aug. 2009
Revision : 5.1
7/14
7페이지 | |||
구 성 | 총 14 페이지수 | ||
다운로드 | [ EMA1901.PDF 데이터시트 ] |
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부품번호 | 상세설명 및 기능 | 제조사 |
EMA1901 | 1.25W Mono Audio Power Amplifier | Elite Semiconductor |
EMA1901-50WL09GRR | 1.25W Mono Audio Power Amplifier | Elite Semiconductor |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |