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PDF ( 数据手册 , 数据表 ) EUA4992A

零件编号 EUA4992A
描述 2.25W Stereo Audio Power Amplifier
制造商 Eutech Microelectronics
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EUA4992A 数据手册, 描述, 功能
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 8BTL with less than 1%
distortion (THD+N) from a 5.0V power supply, and
540mW to an 8BTL 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 4Load
-- 1.54W/CH (typ) into a 8Load
z Output Power at 1% THD+N, VDD=5V
-- 1.9W/CH (typ) into a 4Load
-- 1.25W/CH (typ) into a 8Load
z Output Power at 1% THD+N, VDD=3.3V
-- 0.75W/CH (typ) into a 4Load
-- 0.54W/CH (typ) into a 8Load
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







EUA4992A pdf, 数据表
EUA4992/4992A
Figure14.
Figure15.
Figure16.
Figure18.
DS4992/4992A Ver1.0 Mar. 2009
Figue17.
Power Dissipation vs Output Power, V =5V
DD
1.4
4 ohm
1.2
1.0
0.8 8 ohm
0.6
0.4
0.2
0.0
0.0
0.5 1.0 1.5 2.0
OUTPUT POWER(W)
2.5
Figure19.
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