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| 型號(hào)： | APA4838R |
| 廠商： | Anpec Electronics Corporation |
| 英文描述： | Stereo 2.8W Audio Power Amplifier with DC Volume Control and Selectable Gain |
| 中文描述： | 立體聲2.8W音頻功率放大器直流音量控制及可選擇增益 |
| 文件頁(yè)數(shù)： | 1/29頁(yè) |
| 文件大?。?/td> | 244K |
| 代理商： | APA4838R |
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Stereo 2.8W Audio Power
Amplifier with DC Volume Control
and Selectable Gain
Copyright
ANPEC Electronics Corp.
Rev. A.
1 -
Apr
.,
2003
APA4838
www.anpec.com.tw
1
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise
customers to obtain the latest version of relevant information to verify before placing orders.
Operating Voltage : 4.5V to 5V
Stereo switchable bridged/single-ended
power amplifiers
DC Volume Control Interface , 0dB to –78dB
with precision scale
Supply Current , I
DD
= 15mA at Stereo BTL
Low Shutdown Current , I
DD
= 0.7μA
Bridge-Tied Load (BTL) or Single-Ended-(SE)
Modes Operation
Output Power at 1% THD+N , V
DD
=5V
–
2.3W/Ch (typ) into a 3
Load
–
2.0W/Ch (typ) into a 4
Load
–
1.2W/Ch (typ) into a 8
Load
Output Power at 10% THD+N , V
DD
=5V
–
2.8W/Ch (typ) into a 3
Load
–
2.3W/Ch (typ) into a 4
Load
–
1.5W/Ch (typ) into a 8
Load
Single-ended mode at 1.0% THD+N
–
95mW/Ch (typ) into 32
Load
Depop Circuitry Integrated
Thermal shutdown protection and over current
protection circuitry
High supply voltage ripple rejection
PC99 Compliant
28-pin TSSOP-P (with enhanced thermal pad)
power package available
Features
General Description
Applications
Pin Description
Notebook and Desktop Computers
Multimedia Monitors
Portable Applications
The APA4838 is a monolithic integrated circuit , which
provides DC volume control , and a stereo bridged
audio power amplifiers capable of producing 2.8W
(2.3W) into 3
with less than 10% (1.0%) THD+N.
APA4838 includes a DC volume control , stereo
bridge-tied and single-ended audio power amplifiers
, stereo docking outputs , and a selectable gain con-
trol , that makes it optimally fittable for notebook PC
, multimedia monitors , and other portable
applications. The attenuator range of the volume
control in APA4838 is from 0dB (DC_Vol=0.8V
) to
–78dB (DC_Vol=0V) with 31 steps. Both of the depop
circuitry and the thermal shutdown protection circuitry
are integrated in APA4838 , that reduces pops and
clicks noise during power up or shutdown mode op-
eration , and protects the chip from being destroyed
by over temperature failure. To simplify the audio
system design , APA4838 combines a stereo bridge-
tied loads (BTL) mode for speaker drive and a stereo
single-end (SE) mode for headphone drive into a
single chip , where both modes are easily switched
by the HP Sense input control pin signal. Besides
the low supply current design to increase the effi-
ciency of the amplifiers , APA4838 also features a
shutdown function which keeps the supply current
only 0.7μA (typ).
Shutdown
GND
V
DD
GND
HP Sense
GND
Left Gain 1
Left Gain 2
BYPASS
Right Dock
Right In
Gain Select
Mode
Mute
DC Vol
GND
Beep In
Left In
Left Dock
GND
10
1
2
3
4
5
6
7
8
9
11
12
13
14
Right Out +
V
DD
Right Out -
Right Gain 2
Right Gain 1
Left Out -
V
DD
Left Out +
28
27
26
25
24
23
22
21
20
19
18
17
16
15
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| APA4838RI-TR | 制造商:ANPEC 制造商全稱:Anpec Electronics Coropration 功能描述:Stereo 2.8W Audio Power Amplifier with DC Volume Control and Selectable Gain |
| APA4838RI-TU | 制造商:ANPEC 制造商全稱:Anpec Electronics Coropration 功能描述:Stereo 2.8W Audio Power Amplifier with DC Volume Control and Selectable Gain |
| APA4863 | 制造商:ANPEC 制造商全稱:Anpec Electronics Coropration 功能描述:Stereo 2.2W Audio Power Amplifier |
| APA4863_09 | 制造商:ANPEC 制造商全稱:Anpec Electronics Coropration 功能描述:Stereo 2.2W Audio Power Amplifier |
| APA4863KI-TR | 制造商:ANPEC 制造商全稱:Anpec Electronics Coropration 功能描述:Stereo 2.2W Audio Power Amplifier |
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