Rainbow Electronics MAX98314 - Manual

MAX98314
Mono 3.2W Class D Amplifier
with Integrated Input Coupling Capacitors
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General Description
The MAX98314 mono 3.2W Class D amplifier provides
Class AB audio performance with Class D efficiency.
This device offers five selectable gain settings (0dB,
3dB, 6dB, 9dB, and 12dB) set by a single gain-select
input (GAIN).
Active emissions limiting (AEL) edge rate and overshoot
control circuitry and a filterless spread-spectrum modu-
lation (SSM) scheme greatly reduce EMI and eliminate
the need for output filtering found in traditional Class D
devices.
The IC’s low 0.95mA at 3.7V, 1.2mA at 5.0V quiescent
current extends battery life in portable applications.
Highly linear, integrated input coupling capacitors (C
IN
)
reduce solution size and provide excellent THD+N, PSRR,
and CMRR performance at low frequencies vs. standard
Class D amplifiers using external input capacitors.
The IC is available in a small 9-bump, 0.3mm pitch WLP
(1.0mm x 1.0mm x 0.80mm) package and is specified
over the -40NC to +85NC extended temperature range.
Applications
Mobile Phones
Portable Audio
Notebook Computers
MP3 Players
Netbook Computers
VoIP Phones
Features
S Integrated Input Coupling Capacitors with
Excellent Linearity

f
C
= 100Hz (6dB)
 f
C
= 200Hz (12dB)
S
Low Quiescent Current

0.95mA at 3.7V
 1.2mA at 5.0V
S Delivers High Output Power at 10% THD+N

3.2W into 4I, V
PVDD
= 5V
 960mW into 8I, V
PVDD
= 3.7V
S
Ultra-Low Noise: 19µV
S Eliminates Output Filtering Requirement

Spread Spectrum and Active Emissions Limiting
S
Click-and-Pop Suppression
S Thermal and Overcurrent Protection
S
Low Current Shutdown Mode
S Small, Space-Saving Package
Simplified Block Diagram
19-6124; Rev 0; 11/11
Ordering Information appears at end of data sheet.
For related parts and recommended products to use with this part, refer to: www.maxim-ic.com/MAX98314.related
E V A L U A T I O N K I T A V A I L A B L E
GAIN CONTROL
CLASS D
MODULATOR
AND H-BRIDGE
C IN
C IN
MAX98314
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.