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PDF NAU8214 Data sheet ( Hoja de datos )
| Número de pieza | NAU8214 | |
| Descripción | 2.9W Mono Filter-Free Class-D Audio Amplifier | |
| Fabricantes | nuvoton | |
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NAU8214 2.9W Mono Filter-Free Class-D Audio Amplifier
Table of Contents
1.1 Description .................................................................................................................................................. 2
1.2 Pin Descriptions .......................................................................................................................................... 3
1.3 Operating Characteristics ............................................................................................................................ 5
1.4 Absolute Maximum Ratings......................................................................................................................... 6
1.5 Recommended Operating Conditions ......................................................................................................... 6
1.6 Special Feature Description ........................................................................................................................ 7
1.7 Device Protection .......................................................................................................................................16
1.7.1 Thermal Overload Protection ..............................................................................................................16
1.7.2 Short Circuit Protection .......................................................................................................................16
1.7.3 Supply under Voltage Protection .........................................................................................................16
1.8 Max Power Limiting feature ........................................................................................................................16
1.8.1 Power limiting VDD independent configuration ...................................................................................17
1.8.2 Power limiting VDD dependent configuration ......................................................................................17
1.8.3 ATTACK TIME, HOLD TIME, AND RELEASE TIME...........................................................................17
1.8.4 Attach time Plot ...................................................................................................................................18
1.8.5 Hold & Release plots...........................................................................................................................18
1.9 Power up and Power down Control ............................................................................................................18
1.10 Application diagram....................................................................................................................................19
1.10.1 Single ended input configuration .........................................................................................................19
1.10.2 Differential input configuration .............................................................................................................19
1.11 Component selection..................................................................................................................................19
1.11.1 Coupling Capacitors ............................................................................................................................19
1.11.2 Bypass Capacitors ..............................................................................................................................20
1.12 Layout considerations ................................................................................................................................20
1.13 Class D without filter...................................................................................................................................20
1.14 Class D with filter........................................................................................................................................20
1.14.1 Ferrite Bead filter.................................................................................................................................21
1.14.2 LC filter................................................................................................................................................21
1.15 NAU8214 EMI performance .......................................................................................................................22
Package Dimensions...............................................................................................................................................23
1.16 20 Pin QFN Package..................................................................................................................................23
1.17 8 pin SOP package ...................................................................................................................................24
Ordering Information ...............................................................................................................................................25
1.18 Nuvoton Part Number Description..............................................................................................................25
NAU8214 Data Sheet Rev1.6
Page 1 of 25
April 22, 2015
1 page  
NAU8214 2.9W Mono Filter-Free Class-D Audio Amplifier
1.3 Operating Characteristics
Conditions: EN = VDD = 5V, VSS = 0V, Av = 18dB, ZL = ∞, Bandwidth = 20Hz to 22kHz, TA = 25 °C
Parameter
Symbol Comments/Conditions
Min Typ
Max
Power Delivered
Output Power
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 = 3.6V
VDD = 5.0V
VDD = 3.6V
VDD = 5.0V
VDD = 3.6V
VDD = 5.0V
VDD = 3.6V
2.9
1.48
2.3
1.2
1.7
0.87
1.38
0.71
Units
W
Parameter
Chip Enable (EN)
Voltage Enable High
Voltage Enable Low
Input Leakage Current
Thermal and Current Protection
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
Limiting Current
Single Ended Input Resistance
Resistance (EN pin to GND)
Symbol
VEN_H
VEN_L
ILIMIT
RIN
REN
Comments/Conditions
VDD = 2.5V to 5.5V
VDD = 2.5V to 5.5V
AV = 18dB
Min
1.3
Typ
0.1
150
20
2.0
10
300
Max Units
V
0.35 V
2.0 µA
°C
°C
A
kΩ
kΩ
Parameter
Normal Operation
Quiescent Current Consumption
Shut Down Current
Oscillator Frequency
Efficiency
Start Up Time
Output Offset Voltage
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Symbol
IQUI
IOFF
fOSC
η
Tstart
VOS
CMRR
PSRR
Comments/Conditions
VDD = 3.6V
VDD = 5V
EN = 0
SOP-8 (ZL=8Ω)
fIN = 1KHz
DC PSRR
AC PSRR
VRIPPLE = 0.2Vpp
@217Hz
VRIPPLE = 0.2Vpp@1kHz
VRIPPLE =
0.2Vpp@10kHz
Min
Noise Performance
VDD = 3.6V (A-weighted)
Typ Max
1.4
2.7
0.5
300
91
4
±1
60
92
82
80
60
56
Units
mA
mA
µA
kHz
%
ms
mV
dB
dB
dB
dB
dB
µVRMS
NAU8214 Data Sheet Rev1.6
Page 5 of 25
April 22, 2015
5 Page 
NAU8214 2.9W Mono Filter-Free Class-D Audio Amplifier
Supply Current vs. Supply Voltage
4
3.5
3
2.5
NO LOAD
2 RL = 4ohm+33uH
1.5 RL = 8ohm+66uH
1
0.5
0 SUPPLY VOLTAGE( V )
2.5 3 3.5 4 4.5 5 5.5
Maximum Output Power vs Supply
Voltage , RL=8Ω+33uH, Gain = 18dB
2
1.8
1.6
1.4
1.2
1 1%
0.8 10%
0.6
0.4
0.2 SUPPLY VOLTAGE (V)
0
2.5 3 3.5 4 4.5 5
NAU8214 Data Sheet Rev1.6
Page 11 of 25
April 22, 2015
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet NAU8214.PDF ] | |
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