Document
APA2603B
2.5W Stereo Class-D Audio Power Amplifier (with DC Volume Control)
Features
• • • • • • • • • • • •
Operating Voltage: 3.3V-5.5V High Efficiency 85% at PO=2.5W, 4Ω Speaker, VDD=5V Filter-Free Class-D Amplifier Low Shutdown Current - IDD=1µA at VDD=5V 64 Steps Volume Adjustable from -80dB to +20dB by DC Voltage with Hysteresis Output Power at THD+N=1% - 2.5W at VDD=5V, RL=4Ω Less External Components Required Internal AGC Function Input signal and output signal in phase Thermal and Over-Current Protections with Auto-Recovery Lead Free and Green Device Available (RoHS Compliant) Power Enhanced Packages SOP-16 and QFN4x420A
General Description
The APA2603B is a stereo, high efficiency, filter-free ClassD audio amplifier available in a SOP-16, QFN4x4-20A package. The APA2603B provide the precise DC volume control, the gain range is from -80dB (V VOLUME =5V) to +20dB (VVOLUME=0V) with 64 steps precise control. It’ s easy to get the suitable amplifier’ s gain with the 64 steps gain setting. The filter-free architecture eliminates the output filters compared to the traditional Class-D audio amplifier, and reduces the external component counts and the components high, it could save the PCB space, system cost, simplifies the design and the power loss at filter. APA2603B provides an internal AGC (Non-Clip) function, and this function can low down the dynamic range for large input signal. APA2603B can provide from 20dB to 80dB with 64 steps gain decrease for non-clipping function, and this function can avoid output signal clipping. The APA2603B also integrates the de-pop circuitry that reduces the pops and click noises during power on/off or shutdown enable process. The APA2603B has build-in over-current and thermal protection that prevent the chip being destroyed by short circuit or over temperature situation.
Applications
• • •
Simplified Application Circuit
LCD TVs DVD Player Active Speakers
Stereo Input Signals RIN ROUT+ LIN Stereo Speakers ROUT-
APA2603B
LOUT+ DC Volume Control VOLUME LOUT-
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. Rev. A.5 - Feb., 2013 1 www.anpec.com.tw
Free Datasheet http://www.datasheet4u.com/
APA2603B
Pin Configuration
19 ROUT+ 18 GND 17 LOUT+ 20 VDD 16 VDD
SD BYPASS RIN GND GND LIN VOLUME MUTE
1 2 3 4 5 6 7 8
APA2603B
16 15 14 13 12 11 10 9
ROUTVDD ROUT+ GND GND LOUT+ VDD LOUT-
ROUT- 1 NC 2 SD 3 Bypass 4 RIN 5
15 LOUT14 NC
APA2603B
13 VDD 12 NC 11 NC
SOP-16 (Top View)
GND 6 Volume 8 Mute 9 NC 10 LIN 7
QFN4x4-20A (Top View)
Ordering and Marking Information
APA2603B Lead Free Code Handling Code Temperature Range Package Code
APA2603B XXXXX
Package Code K : SOP-16 QA : QFN4x4-20A Operating Ambient Temperature Range o I : -40 to 85 C Handling Code TR : Tape & Reel Lead Free Code G : Halogen and Lead Free Device
APA2603B K :
XXXXX - Date Code
APA2603B QA :
B APA2603 XXXXX
XXXXX - Date Code
Note : ANPEC lead-free products contain molding compounds/die attach materials and 100% matte tin plate termination finish; which are fully compliant with RoHS. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J-STD-020D for MSL classification at lead-free peak reflow temperature. ANPEC defines “Green” to mean lead-free (RoHS compliant) and halogen free (Br or Cl does not exceed 900ppm by weight in homogeneous material and total of Br and Cl does not exceed 1500ppm by weight).
Copyright © ANPEC Electronics Corp. Rev. A.5 - Feb., 2013
2
www.anpec.com.tw
Free Datasheet http://www.datasheet4u.com/
APA2603B
Absolute Maximum Ratings (Note 1)
Symbol VDD Supply Voltage (VDD to GND) Input Voltage (LINN, RINN to GND) Input Voltage (SD, MUTE, VOLUME and BYPASS to GND) TJ TSTG TSDR PD Maximum Junction Temperature Storage Temperature Range Maximum Soldering Temperature Range, 10 Seconds Power Dissipation Parameter Rating -0.3 to 6.5 -0.3 to VDD+0.3 -0.3 to VDD+0.3 150 -65 to +150 260 Internally Limited W
ο
Unit
V
C
Note1: Stresses beyond those listed under ¡§absolute maximum ratings¡¨ may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under ¡§recommended operating conditions¡¨is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Thermal Characteristics
Symbol θJA θJC Parameter Thermal Resistance -Junction to Ambient (Note 2) SOP-16 QFN4x4-20A Thermal Resistance -Junction to Case
(Note 3)
Typical Value 80 45 16 7
Unit
ο
C/W
SOP-16 QFN4x4-20A
ο
C/W
Note 2: Please refer to “ Layout Recommendation”, the PGND PIN on the central of the IC should connect to the ground plan, and the PCB is a 2-layer, 5-inch square area with 2oz copper thickness. Note 3: The case temperature is.