DA7202
10W Mono Class D amplifier for 2S battery operated
portable devices
DA7202 is a powerful, highly efficient, low EMI, standalone high performance mono Class-D
speaker driver designed to drive 10W into 4Ω loads directly from a 2S lithium-ion battery
pack.
DA7202 targets a variety of two cell portable applications such as Ultrabooks™ and tablets.
DA7202 uses a fully-differential switched mode amplifier architecture with a fixed +18 dB gain and
differential analogue inputs. It also has a PWM modulator and an H bridged switched power output
stage that delivers 3.8 Wrms into an 8 Ω load (10.2W into a 4 Ω load), making a speaker sound
louder in portable devices.
DA7202 can be directly connected between the two-cell battery and the speaker. Noise suppression
circuitry to reduce audible pops and clicks at the speaker is also included.
DA7202 is available in 9 bump WL-CSP package, 0.5mm pitch, enabling low cost PCB technology,
ideal for portable applications requiring small footprints.
Block Diagram
www.dialog-semiconductor.com
Features
►
Low Component Count
►
Small PCB area due to 9 bump WLCSP
0.5mm pitch package
►
Good PSRR and THD+N
►
Differential Audio inputs
►
Low EMI
►
Short circuit and thermal overload protection
with auto recovery
Functions
Applications
►
UltrabooksTM
►
Tablets
►
Personal Navigation Devices
►
Speaker Accessories
►
Handheld Gaming
►
Mobile Computing
►
Supports 4Ω and 8Ω loads
►
Input supply range: 4.5 to 9.0V
►
Prms : 9.0W into 4Ω load @ 8.2V, 1% THD+N
►
Prms : 10.2W into 4Ω load @ 8.2V, 10%
THD+N
►
Prms : 3.8W into 8Ω load @ 8.2V, 1% THD+N
►
Prms : 5.0W into 8Ω load @ 8.2V, 10%
THD+N
►
Efficiency: 85% @ Pout = 7.0W @ 8.2V, 4Ω
►
Efficiency: 90% @ Pout = 3.5W @ 8.2V, 8Ω
►
Ultra-low standby current : 7µA
►
SNR (A-weighted) 104dB
►
THD+N: 90dB
►
PSRR: 78dB
►
Fixed +18db gain
Output Power (W)
THD+N vs Output Power for different battery
configurations
Audio system diagram
Dialog Semiconductor Worldwide Sales Offices
-
www.dialog-semiconductor.com
United Kingdom
Phone: +44 1793 757700
Germany
Phone: +49 7021 805-0
The Netherlands
Phone: +31 73 640 88 22
North America
Phone: +1 408 845 8500
Japan
Phone: +81 3 5425 4567
Taiwan
Phone: +886 281 786 222
Singapore
Phone: +65 648 499 29
Hong Kong
Phone: +852 3769 5200
email: info@diasemi.com
Korea
Phone: +82 2 3469 8200
China (Shenzhen)
Phone: +86 755 2981 3669
China (Shanghai)
Phone: +86 21 5424 9058
This publication provides outline information only, which unless agreed by Dialog Semiconductor may not
be used, applied or reproduced for any purpose, or be regarded as a representation relating to products.
Please refer to Dialog standard supply terms on the company website (www.dialog-semiconductor.com).
© Dialog Semiconductor 2015. All rights reserved. 0415XXX
