MAX98306 Datasheet, PDF (1/14 Pages) Maxim Integrated Products – Stereo 3.7W Class D Amplifier Spread-Spectrum Modulation and Active Emissions Limiting

19-5919; Rev 0; 6/11
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Stereo 3.7W Class D Amplifier
General Description
The MAX98306 stereo 3.7W Class D amplifier provides
Class AB audio performance with Class D efficiency.
This device offers five selectable gain settings (6dB,
9dB, 12dB, 15dB, and 18dB) set by a single gain-select
input (GAIN).
Active emissions limiting, edge-rate, and overshoot con-
trol circuitry combined with a filterless spread-spectrum
modulation scheme (SSM) provide excellent EMI perfor-
mance while eliminating the need for output filtering found
in traditional Class D devices. These features reduce
application component count.
The IC's 2.0mA quiescent current with a 3.7V supply
extends battery life in portable applications.
The IC is available in a 14-pin TDFN (3mm x 3mm x
0.75mm) package specified over the extended -40NC to
+85NC temperature range.
Applications
Smartphones
Tablets
Cellular Phones
Accessory Speakers
MP3 Players
Portable Audio Players
VoIP Phones
Features
S Output Power 3.7W at 3I, 10% THD, 1.7W at 8I,
10% THD, with 5V Supply
S Passes EMI Limit Unfiltered with Up to 12in of
Speaker Cable
S High 83dB PSRR at 217Hz
S Spread-Spectrum Modulation and Active
Emissions Limiting
S Five Pin-Selectable Gains
S Excellent Click-and-Pop Suppression
S Thermal and Overcurrent Protection
S Low-Current Shutdown Mode
S Space-Saving, 3mm x 3mm x 0.75mm,
14-Pin TDFN
Ordering Information
PART
TEMP RANGE
PIN-
TOP
PACKAGE MARK
MAX98306ETD+ -40NC to +85NC 14 TDFN +AEV
+Denotes a lead(Pb)-free/RoHS-compliant package.
Typical Application Circuit
+2.6V TO +5.5V
0.1µF 10µF
1µF
INL+
PVDD
OUTL+
1µF
INL-
PVDD
GAIN
1µF
INR+
GAIN
CONTROL
OUTL-
OUTR+
1µF
INR-
PVDD
SHDN
OUTR-
MAX98306
PGND
________________________________________________________________ Maxim Integrated Products   1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.