NAU82028 Datasheet, PDF (1/19 Pages) List of Unclassifed Manufacturers – 3.1W Mono Filter-Free Class-D Audio Amplifier with 2 wire interface gain control

NAU82028
3.1W Mono Filter-Free Class-D Audio Amplifier
with 2 wire interface gain control
1 Description
The NAU82028 is a mono high efficiency filter-free Class-D audio amplifier, which is capable of driving a 4Ω load with
up to 3.1W output power. This device provides chip enable pin with extremely low standby current and fast start-up time
of 3.4ms. The NAU82028 features a highly flexible 2 wire interface with many useful gain settings. The gain can be
selected from 12dB to –20.5dB (plus mute) by using 2 wire interface.
The NAU82028 is ideal for the portable applications of battery drive, as it has advanced features like 93% efficiency,
ultra low quiescent current (i.e. 2.0 mA at 3.6V) and superior EMI performance. It has the ability to configure the inputs
in either single-ended or differential mode.
NAU82028 is available in Miniature WCSP-9 (1.56mm x 1.52mm in 0.5mm pitch) package.
Key Features
 Low Quiescent Current:
 2.0mA at 3.6V
 3.1mA at 5V
 Gain Setting with 2 wire interface
 12dB to -19.3dB (plus mute)
 Powerful Mono Class-D Amplifier:
 3.1W (4Ω @ 5V, 10% THD+N)
 2.46W (4Ω @ 5V, 1% THD+N)
 1.77W (8Ω @ 5V, 10% THD+N)
 1.41W (8Ω @ 5V, 1% THD+N)
 1.54 W (4Ω @ 3.6V, 10% THD+N)
 1.26 W (4Ω @ 3.6V, 1% THD+N)
 0.9 W (8Ω @ 3.6V, 10% THD+N)
 0.76 W (8Ω @ 3.6V, 1% THD+N)
 Low Output Noise: 26 µV_RMS (A –Weighted @3.6V)
 Low Current Shutdown Mode
 Click-and Pop Suppression
 1.56mm x 1.52mm in WCSP (0.5mm Pitch)
Applications
 Smartphones
 Tablet PCs
 Personal Navigation Devices
VIN
VIP
Gain
Control
Class D
Modulator
Output
Driver
SCL
SDA
2 Wire
Control
NAU82028
Click / Pop
Suppression
EN
NAU82028 Datasheet Rev 0.2
Page 1 of 19
Current / Thermal
Protection
VSS
VDD
Mar, 2013