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PDF NAU8220 Data sheet ( Hoja de datos )
| Número de pieza | NAU8220 | |
| Descripción | 2Vrms Audio Line Driver | |
| Fabricantes | Nuvoton Technology | |
| Logotipo |  |
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NAU8220
2Vrms Audio Line Driver
1 General Description
The NAU8220 is a high quality 2Vrms analog input and output line driver. This device
includes an integrated charge pump enabling true ground referenced inputs and outputs and
full 5.6Vpp output levels, while operating from only a single 3.3V positive supply voltage.
Additionally, the NAU8220 includes pop/click elimination features and high immunity to
power supply and other system noise. This enables fast and efficient system integration
while minimizing external component costs.
The NAU8220 is specified for operation from -40°C to +85°C, It is packaged in a cost-
effective and space-saving 14-lead SOP and TSSOP packages.
2 Features
Operating voltage: 3.0-3.6V
Full 2Vrms output using only 3.3Vdc supply
True Ground Referenced analog outputs
Low cost, small footprint package
Automatic pop/click elimination and output muting for power-on
108dB SNR A-weighted performance
>90dB THD+N
114dB Mute Attenuation
< 1mV Output Offset
110dB channel separation at 1kHz
Low external parts count
High system noise immunity
Packages: Pb free 14-pin SOP and TSSOP
Operating temperature range: -40 to +85°C
±8 kV HBM protection on line outputs
Datasheet Revision 2.0
Page 1 of 19
1 page  
NAU8220
7 Absolute Maximum Ratings
DESCRIPTION
VDD supply voltage
Digital Input Voltage
range
Analog Input Voltage
Operating
Temperature
Storage Temperature
SYMBOL
VDD
DVIN
AVIN
TA
Tst
CONDITION
VDD−GND
DVIN− GND
AVIN− VEE
MINIMUM
-0.3
GND – 0.3
VEE – 0.3
-40
-65
MAXIMUM
+4.0
VDD + 0.30
VDD + 0.30
+85
+150
UNIT
V
V
V
°C
°C
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such
Conditions may adversely influence product reliability and result in failures not covered by warranty. Follow IC
handling procedures to avoid ESD damage.
8 Recommended Operating Conditions
DESCRIPTION
Supply voltage
Ground
SYMBOL
VDD
GND
MINIMUM
3.0
TYPICAL
3.3
0
MAXIMUM
3.6
UNIT
V
V
Datasheet Revision 2.0
Page 5 of 19
5 Page 
NAU8220
Step2:
Using the equation
ଶగ
ொ
ൌ
ሺ ଵ ሻሺ ଵ ଵ ଵ ሻ
ଶ ோଵ ோଶ ோଷ
, Calculate R3 by assuming C2 = 1000pF
R3 = 3.3kOhms
Step3: Using the equationሺ2ߨ݂ܿሻଶ ൌ ଵ , the C1 = 150pF
ଵଶோଷோଶ
Example2: Design a second order differential mode MFB Low pass filter with following specifications. Cut
off Frequency = 50 kHz, Quality factor, Q= 0.707 and Gain, K = -2.
The differential mode configuration can be achieved by duplicating the above example 1 values except
the C2. The C2 value in this configuration is half of the value of the single ended configuration.
Differential 2nd order Low pass filter
Datasheet Revision 2.0
Page 11 of 19
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet NAU8220.PDF ] | |
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