APA2600 Datasheet, PDF (1/22 Pages) Anpec Electronics Coropration – 2.8W Stereo Class-D Audio Power Amplifier

APA2600
2.8W Stereo Class-D Audio Power Amplifier
Features
• Operating Voltage: 2.4V~5.5V
• Filter-free Class-D Amplifier
• High Efficiency 87% at P_O=1.5W, 8Ω Speaker,
V =5V
DD
• Fast Start-up Time (20ms)
• High PSRR: 70dB at 217Hz
• Thermal and Over-Current Protections
• Two Gain-Setting Selectable : 6dB and 12dB
• Less External Components Required
• Space Saving Package
– TQFN3x3-16
• Lead Free and Green Devices Available
(RoHS Compliant)
Applications
• Handsets
• PDAs
• Portable Multimedia Devices
• Notebooks
Simplified Application Circuit
Left
Channel
Input
Right
Channel
Input
LINN
LOUTP
LINP
LOUTN
APA2600
RINP
ROUTN
RINN
ROUTP
Left
Channel
Speaker
Right
Channel
Speaker
General Description
The APA2600 is a stereo, high efficiency, filter-free Class-
D audio amplifier available in a TQFN3x3-16 pins package.
The internal gain setting can minimize the external com-
ponent count and save the PCB space. For the flexible
application, the gain can be set to 6dB or 12dB by GAIN
control pin. High PSRR and differential architecture pro-
vide increase immunity to noise and RF rectification. In
addition to these features, short start-up time and small
package size make the APA2600 an ideal choice for cellu-
lar handsets, PDA, and notebook PCs.
The APA2600 is suitable for battery power appication
because its operating voltage is from 2.4V to 5V and has
very low shutdown current. The filter-free architecture elimi-
nates the output filter compared to the traditional Class-D
audio amplifier, and reduces the external component
counts. The APA2600 also integrates the de-pop circuitry
that reduces the pops and click noises during power on/
off or shutdown enable process.
The APA2600 is capable of driving 2.8 W at 5 V or 570 mW
at 2.4 V into 4Ω speaker. In addition, it provides thermal
and over-current protections.
90
V_DD=2.4V
80
70
V_DD=3.6V
V_DD=5V
60
50
40
R_L=8Ω+33µH
30
f_in=1kHz
C_i=0.1µF
20
A_V=6dB
Mono
10
AUX-0025
AES-17(20kHz)
0
0
0.3
0.6
0.9
1.2
1.5
Output Power (W)
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.
Copyright © ANPEC Electronics Corp.
1
Rev. A.5 - Jul., 2013
www.anpec.com.tw