EUA4992AJIR1 Datasheet PDF - Eutech Microelectronics
| Part Number | EUA4992AJIR1 | |
| Description | 2.25W Stereo Audio Power Amplifier | |
| Manufacturers | Eutech Microelectronics | |
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EUA4992/4992A
2.25W Stereo Audio Power Amplifier
DESCRIPTION
The EUA4992/4992A are dual bridge-connected audio
power amplifiers, capable of delivering 1.25W of
continuous average power to an 8Ω BTL with less than 1%
distortion (THD+N) from a 5.0V power supply, and
540mW to an 8Ω BTL load from a 3.3V power supply.
The EUA4992/4992A provide high quality audio while
requiring few external components and minimal power
consumption. They feature a low-power shutdown mode,
which is achieved by driving the SHUTDOWN pin with
logic low.
The EUA4992/4992A contain circuitry to prevent
from ”pop and click” noise that would otherwise occur
during turn-on and turn-off transitions.
For maximum flexibility, the EUA4992/4992A provide an
externally controlled gain (with resistors), as well as an
externally controlled turn-on and turn-off times (with the
bypass capacitor).
The EUA4992/4992A are available in a 16-pin TQFN
package.
Typical Application Circuit
FEATURES
z Output Power at 10% THD+N, VDD=5V
-- 2.25W/CH (typ) into a 4Ω Load
-- 1.54W/CH (typ) into a 8Ω Load
z Output Power at 1% THD+N, VDD=5V
-- 1.9W/CH (typ) into a 4Ω Load
-- 1.25W/CH (typ) into a 8Ω Load
z Output Power at 1% THD+N, VDD=3.3V
-- 0.75W/CH (typ) into a 4Ω Load
-- 0.54W/CH (typ) into a 8Ω Load
z Shutdown Current 0.06µA (typ)
z Supply Voltage Range 2.5V to 5.5V
z “Click and Pop” Suppression
z Thermal Shutdown Protection Circuitry
z Available in 3mm 3mm TQFN-16 (EUA4992)
and 4mm 4mm TQFN-16 (EUA4992A) Packages
z RoHS compliant and 100% lead(Pb)-free
APPLICATIONS
z Cell Phones
z Portable and Desktop Computers
z Portable Audio System
z Multimedia Monitors
DS4992/4992A Ver1.0 Mar. 2009
Figure 1.
1
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EUA4992/4992A
Electrical Characteristics (3.3V)
The following specifications apply for VDD=3.3V unless otherwise noted. Limits apply for TA=+25°C.
Symbol
Parameter
Conditions
EUA4992/4992A
Min Typ Max.
IDD
Quiescent Power Supply
Current
VIN=0V,IO=0A
3.8
Unit
mA
ISD Shutdown Current
VIH
Shutdown Input Voltage
High
VIL Shutdown Input Voltage
TWU TLurn on time
VOS Output Offset Voltage
GND applied to the shutdown pin
1µF bypass cap (C4)
VIN=0V
0.02 µA
0.9 V
0.8 V
105 ms
5 mV
THD+N=1%, f=1KHz RL=4Ω (Note 1) 0.75 W
PO Output Power
THD+N=1%, f=1KHz RL=8Ω
THD+N=10%, f=1KHz RL=4Ω (Note 1)
0.54
0.93
W
W
THD+N
Total Harmonic Distortion +
Noise
PSRR
Power Supply Rejection
Ratio
Xtalk Channel separation
THD+N=10%, f=1KHz RL=8Ω
1KHz, Avd=2 RL=8Ω,Po=0.25W
Input grounded f=217Hz Vripple=200m
Vp-p C4=1µF, RL=8Ω
Input grounded f=1KHz Vripple=200m
Vp-p C4=1µF, RL=8Ω
Input unterminated f=217Hz
Vripple=200m Vp-p C4=1µF, RL=8Ω
Input unterminated f=1KHz
Vripple=200m Vp-p C4=1µF, RL=8Ω
f=1KHz, C4=1µF
0.64
0.076
51
64
76
70
95
W
%
dB
dB
VNO Output noise voltage
1KHz
11 uVrms
Note 1. The thermal performance of the QFN package when used with the exposed-DAP connected to a thermal plane is
sufficient for driving 4Ω loads.
DS4992/4992A Ver1.0 Mar. 2009
5
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| Information | Total 15 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
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