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PDF NAU8223 Data sheet ( Hoja de datos )
| Número de pieza | NAU8223 | |
| Descripción | 3.1W Stereo Filter-Free Class-D Audio Amplifier | |
| Fabricantes | nuvoton | |
| Logotipo |  |
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NAU8223
3.1W Stereo Filter-Free Class-D Audio Amplifier
1 Description
The NAU8223 is a stereo 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. It has five selectable gain settings (i.e. 0dB, 6dB, 12dB, 18dB and 24dB), which can be controlled by a single
gain pin.
The NAU8223 is ideal for the portable applications of battery drive, as it has advanced features like 87dB PSRR, 91%
efficiency, ultra low quiescent current (i.e. 2.1mA at 3.7V for 2 channels) and superior EMI performance. It has the
ability to configure the inputs in either single-ended or differential mode.
NAU8223 is available in Miniature QFN-20 package and TSSOP-20 package.
Key Features
Low Quiescent Current:
• 2.1mA at 3.7V for 2 channels
• 3.2mA at 5V for 2 channels
5 Selectable Gain Settings:
• 0dB / 6dB / 12dB / 18dB / 24dB
Powerful Stereo Class-D Amplifier:
• 2ch x 3.1W (4Ω @ 5V, 10% THD+N)
• 2ch x 1.26W (4Ω @ 3.7V, 1% THD+N)
• 2ch x 1.76W (8Ω @ 5V, 10% THD+N)
• 2ch x 0.76W (8Ω @ 3.7V, 1% THD+N)
Low Output Noise: 20 µVRMS @0dB gain
87dB PSRR @217Hz
Low Current Shutdown Mode
Click-and Pop Suppression
Applications
Notebooks / Tablet PCs
Personal Media Players / Portable TVs
MP3 Players
Portable Game Players
Digital Camcorders
NAU8223 Datasheet Rev 1.3
Figure 1: NAU8223Block Diagram
Page 1 of 23
July, 2012
1 page  
4 Electrical Characteristics
Conditions: EN = VDD = 5V, VSS = 0V, Av = 12dB ZL = ∞, Bandwidth = 20Hz to 22kHz, TA = 25 oC
Parameter
Symbol Comments/Conditions
Min Typ
Max
Power Delivered
Output Power
(per channel)
ZL = 4Ω + 33µH
THD + N = 10%
ZL = 4Ω + 33µH
THD + N = 1%
Pout ZL = 8Ω + 68µH
THD + N = 10%
ZL = 8Ω + 68µH
THD + N = 1%
VDD = 5.0V
VDD = 3.7V
VDD = 5.0V
VDD = 3.7V
VDD = 5.0V
VDD = 3.7V
VDD = 5.0V
VDD = 3.7V
3.1
1.57
2.46
1.26
1.76
0.95
1.41
0.76
Units
W
Parameter
Symbol
Chip Enable (EN)
Voltage Enable High
Voltage Enable Low
Input Leakage Current
Thermal and Current Protection
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
Short circuit Threshold
Gain Setting
VEN_H
VEN_L
ILIMIT
Voltage Gain
AV
Differential Input Resistance
RIN
Comments/Conditions Min
VDD = 2.5V to 5.5V
VDD = 2.5V to 5.5V
1.4
-1
Tie GS to VSS
GS Connect VSS through
100k ± 5%
Tie GS pin to VDD
GS Connect VDD
through 100k ± 5%
Floating Node
AV = 24dB
AV = 18dB
AV = 12dB
AV = 6dB
AV = 0dB
Typ
130
15
2.1
24
18
12
6
0
35
70
140
280
558
Max
0.4
+1
Units
V
V
µA
oC
oC
A
dB
kΩ
NAU8223Datasheet Rev 1.4
Page 5 of 23
August, 2013
5 Page 
THD+N vs Frequency
(VDD = 5V, ZL= 8Ω + 68uH)
1
Pout 0.2W
0.1 Pout 1.2W
0.01
0.001
20
200 2000 20000
Frequency(Hz)
THD+N vs Pout
(VDD = 3.7V, ZL = 8Ω + 68uH)
100
f 100Hz
10 f 1kHz
f 6kHz
1
0.1
0.01
0.001
0
0.5 1
Pout (W)
1.5
THD+N vs Pout
(VDD = 4.2V, ZL= 8Ω + 68uH)
100
10
1
f 100Hz
0.1 f 1kHz
f 6kHz
0.01
0.001
0
0.5 1 1.5
Pout (W)
2
THD+N vs Pout
(VDD = 5V, ZL=8Ω + 68uH)
100
10
1
0.1 f 100Hz
f 1kHz
f 6kHz
0.01
0.001
0
12
Pout (W)
3
NAU8223Datasheet Rev 1.4
Page 11 of 23
August, 2013
11 Page | ||
| Páginas | Total 23 Páginas | |
| PDF Descargar | [ Datasheet NAU8223.PDF ] | |
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