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PDF NAU82011WG Data sheet ( Hoja de datos )
| Número de pieza | NAU82011WG | |
| Descripción | 2.9 W Mono Filter-Free Class-D Audio Amplifier | |
| Fabricantes | nuvoton | |
| Logotipo |  |
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NAU82011WG
2.9 W Mono Filter-Free Class-D Audio Amplifier
1 Description
The NAU82011WG is a mono high efficiency filter-free Class-D audio amplifier with variable gain, which is capable of
driving a 4Ω load with up to 2.9W output power. This device provides chip enable pin with extremely low standby
current and fast start-up time of 4ms.
The NAU82011WG is ideal for the portable applications of battery drive, as it has advanced features like 91% efficiency,
low quiescent current (i.e. 1.2mA at 3.6V) and superior EMI performance. It has the ability to configure the inputs in
either single-ended or differential mode.
NAU82011WG is available in MSOP-8 package.
Key Features
Low Quiescent Current:
• 1.2mA at 3.6V
• 1.7mA at 5V
Powerful Mono Class-D Amplifier:
• 2.9W (4Ω @ 5V, 10% THD+N)
• 2.3W (4Ω @ 5V, 1% THD+N)
• 1.7W (8Ω @ 5V, 10% THD+N)
• 1.38W (8Ω @ 5V, 1% THD+N)
Low Output Noise: 20 µVRMS
Low Current Shutdown Mode
Integrated Image Reject Filter
Click-and Pop Suppression
Integrated feedback resistor of 300 kΩ
• 1.48 W (4Ω @ 3.6V, 10% THD+N)
• 1.2 W (4Ω @ 3.6V, 1% THD+N)
• 0.88 W (8Ω @ 3.6V, 10% THD+N)
• 0.71 W (8Ω @ 3.6V, 1% THD+N)
Applications
Smartphones
Tablet PCs
Personal Navigation Devices
VIN R1
VIP R1
Class D
Modulator
Click / Pop
Suppression
NAU82011WG
EN
Output
Driver
Current / Thermal
Protection
VSS
NAU82011WG Datasheet Rev1.0
Figure 1: NAU82011WG Block Diagram
Page 1 of 16
VDD
Dec, 2012
1 page  
Recommended Operating Conditions
Parameter
Symbol
Analog supply range
VDD
Ground
Input Resistor (Gain ≤ 26dB )
Common mode Input voltage range
VDD = 2.5V to 5.5V and CMRR ≥ 49dB
VSS
R1
VIC
Min Typical Max Units
2.50 5.00 5.50 V
0V
15 kΩ
0 VDD - 1.0 V
Test Set up
+
Audio Precision
Output
-
0.1uF
0.1uF
VDD
NAU82011
30kHz low pass
ZL RC filter
+
Audio Precision
Input
-
Note: The 30kHz low pass RC filter is implemented by using R= 1k Ohm and C = 4.7nF
NAU82011WG Datasheet Rev1.0
Page 5 of 16
Dec, 2012
5 Page 
7 Application Information
7.1 Application diagram
7.1.1 Single ended input configuration
VIN 0.1µF 150 kΩ
0.1µF 150 kΩ
VIP
Class D
Modulator
Output
Driver
NAU82011WG
VDD
Click / Pop
Suppression
EN
7.1.2 Differential input configuration
Current / Thermal
Protection
VSS
VDD
0.1µF
10µF
VIN 0.1µF 150 kΩ
VIP 0.1µF 150 kΩ
Class D
Modulator
Output
Driver
NAU82011WG
VDD
Click / Pop
Suppression
EN
Current / Thermal
Protection
VSS
VDD
0.1µF
10µF
NAU82011WG Datasheet Rev1.0
Page 11 of 16
Dec, 2012
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet NAU82011WG.PDF ] | |
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