APA2036 Datasheet, PDF (1/26 Pages) Anpec Electronics Coropration – Stereo 2.6WAudio Power Amplifier

APA2036/APA2036A
Stereo 2.6W Audio Power Amplifier
Features
• Operating Voltage: 3.0 ~ 5.5V
• Low Shutdown Current
•^–
I=
DD
0.5µA (Typical)
at
V = 5V
DD
Selectable Bridge-Tied Load (BTL) or Singled-
Ended (SE) Operation
• Output Power (BTL) at 1% THD+N, V_DD= 5V
– 2.4W at R_L = 3Ω
– 2.0W at R_L = 4Ω
•^–
1.3W
at
R
L
=
8Ω
Output Power (SE) at 1% THD+N, V_DD= 5V
– 160mW at R_L = 16Ω
•^–
85mW
at
R
L
=
32Ω
Depop Circuitry Integrated
• Thermal and Over-Current Protections
• Short Circuit Protection
• Space Saving Packaging
– 4mmx4mm 16-Lead Thin QFN Package
(TQFN4X4-16)
– 3mmx3mm 16-Lead Thin QFN Package
(TQFN3X3-16)
• Lead Free and Green Devices Available
(RoHS Compliant)
Applications
• Handsets
• Portable Multimedia Devices
• Notebooks
Simplified Application Circuit
L-CH
Input
LINN
LBYPASS
LOUTP
LOUTN
SE-BTL
Signal
General Description
The APA2036/APA2036A is a stereo audio power ampli-
fier in a TQFN4x4-16 or TQFN3x3-16 (APA2036A) package.
To simplify the audio system design in notebook com-
puter applications, the APA2036/APA2036A combines a
stereo bridge-tied mode for speaker drive and a stereo
single-end mode for headphone drive into a single chip,
where both modes are easily switched by the SE/BTL
input control pin signal. When the APA2036/APA2036A is
in the BTL mode with 5V supply voltage, it is capable of
delivering 2.4W/2.0W/1.3W of continuous output power
per channel into 3Ω/4Ω/8Ω load (Speaker) with less than
1% THD+N respectively. When the APA2036/APA2036A
operates in the single-ended mode, it is capable of deliv-
ering 160mW/85mW of continuous output power per chan-
nel into 16Ω/32Ω load (Headphone).
The APA2036/APA2036A also serves low-voltage appli-
cations well.
The APA2036/APA2036A, with 3.3V supply voltage, pro-
vides 900mW (at 1% THD+N) per channel into 4Ω load.
Both of the depop circuitry and the thermal shutdown pro-
tection circuitry are integrated in the APA2036/APA2036A.
The depop function reduces pops and clicks noise dur-
ing power on/off and enable/shutdown processes. The
thermal protection protects the chip from being destroyed
by over-temperature failure. For power sensitive
applications, the APA2036/APA2036A also features a shut-
down function which reduces the supply current only
0.5µA (typical).
THD+N vs. Output Power
10 _VDD=5V
R_L=4Ω
C_i=1µF
BW<80kHz
1 BTL mode
f_in=20kHz
R-CH
Input
RINN
ROUTP
0.1
f_in=20Hz
RBYPASS
ROUTN
f_in=1kHz
0.0110m
100m
1 24
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.3 - Jun., 2013
www.anpec.com.tw