Nuvoton NAU8220 User manual

NAU8220
NAU8220 April 2016
NAU8220
U
Us se er r M Ma an nu ua al l

NAU8220
NAU8220 April 2016
HARDWARE CONNECTIONS:
•Install jumpers to shorten pin1/pin2 of JP1 and JP2, respectively.
•Apply 3.0-3.6V (typical 3.3V) supply to J7, whose pin1 and pin2 are for VCC and GND, respectively.
DESCRIPTION:
The NAU8220 demo board is a high quality 2Vrms line driver. It provides a constant gain of 2. The picture below
illustrates all the I/O and power pins.
CONTENTS OF THE KIT:
−The NAU8220 EVB
−User’s guide

NAU8220
NAU8220 April 2016
OPERATIONS:
General Operations:
-1.5V~+1.5V for common mode). Then the output signals can be not only got at RCA jack J5 (right) or
-INR
LEFT OUTPUT
+INL
JP1
1
2
3
+C2
2.2uF
CN
TP2 TEST POINT
1
JP2 1
2
3
R4
15k
12
R1110k
1 2
TP3
TEST POINT
1
RIGHT OUTPUT
VCC
VCC
C6
2.2nF
1 2
R12
10k
1 2
TP5
TEST POINT
1
J3
JUMPER1_PAR
1 2
+C1
2.2uF
+C3
2.2uF
R9
33.2
1 2
TP4
TEST POINT
1
U1
NAU8220
1
2
3
4
5
6
7 8
9
10
11
12
13
14
+INR
-INR
OUTR
GND
MUTE#
VEE
CN CP
VDD
GND
UVP
OUTL
-INL
+INL
J1
JUMPER1_PAR
1 2
MUTE LINE
DRIVER
J2
JUMPER1_PAR
1 2
+C11
10uF
J5 RCA JACK
1
2
SWITCH TACT 6MM MOM 100GF
R2
15k
12
R8
30k
12
J7
CON2
1
2
VEE
+C4
2.2uF
VCC
UVP
R7
30k
12
TP1
TEST POINT
1
TP6
TEST POINT
1
+INR
R14
10K
12
C7
1uF
1 2
R5
30k
12 R6
30k
12
SW1
SW PUSHBUTTON
3 1
4 2
R10
33.2
12
J4
JUMPER1_PAR
1 2
J6
RCA JACK
1
2
C9 100pF
1 2
R15
100k
1 2
-INL
R3
15k
12
R13
68k
12
R1
15k
12
C5
2.2nF 1 2
C10 1uF
1 2
C8
1uF
12
J6 (left), but also measured at TP1 (right) or TP2 (left). (Remark: TP3~TP6 are GND)
2. Mute: Press switch SW1, the output would be zero.
1. Amplify: Apply analog input signals across J1/J2 for right channel or J4/J3 for left channel (restriction:
would remain the same at the beginning, but abruptly go to zero when VCC is slightly less than 2.5V.
Now increase VCC gradually, the output would not vibrate until VCC is about 3.0V. (Note: Do Not
apply more than 3.6V at VCC)
For other technical details on NAU8220, please refer to the datasheet at: http://www.nuvoton.com
3. UVP (Under Voltage Protection): (Cont. 1) Decrease VCC gradually (say, 0.1V per step), the output
SCHEMATIC:

NAU8220
NAU8220 April 2016
BILL OF MATERIALS
Item
Qty
Reference
Part Value
Part Descripton
Part Number
Footprint
Vendor
1
4
C1,C2,C3,C4
2.2uF
CAP ALUM 2.2UF 50V 20%
RADIAL
604-1124-ND
CAP_P_5X2
Digikey
2
2
C6,C5
2.2nF
CAP CER 2200PF 50V 5%
X7R
478-6205-1-ND
603
Digikey
3
3
C7,C8 C10
1uF
CAP CER 1UF 16V 10% X7R
587-1241-1-ND
603
Digikey
4
1
C9
100pF
CAP CER 100PF 50V 5% NP0
490-1427-1-ND
603
Digikey
6
1
C11
10uF
CAP TANT 10UF 25V 10%
2312
399-3734-1-ND
6032P
Digikey
7
2
JP2,JP1
CON3
CONN HEADER 2POS .100
VERT TIN
A32701-40-ND
SIP-3P
Digikey
8
4
J1,J2,J3,J4
JUMPER1_PAR
TEST POINT PC LOW PRO
W/OUT BASE
5021K-ND
HEADER2X100
9
2
J5,J6
RCA JACK
CONN RCA JACK R/A BLACK
PCB
CP-1418-ND
Mfg. P/N
RCJ-041
RCJ-04X
Digikey
10
1
J7
CON2
WM4111-ND
CON2_1X2
Digikey
11
4
R1,R2,R3,R4
15k
RES 15.0K OHM .25W 1%
541-15.0KSCT-ND
603
Digikey
12
4
R5,R6,R7,R8
30k
RES 30.0K OHM 1/10W 1%
541-30.0KHCT-ND
603
Digikey
13
2
R10,R9
33.2
RES 33.2 OHM .25W 1%
541-33.2SCT-ND
603
Digikey
14
3
R12,R11.R14
10k
RES 10.0K OHM 1/10W 1%
P10.0KHCT-ND
603
Digikey
15
1
R13
68k
RES 68.0K OHM 1/10W 1%
541-68.0KHCT-ND
603
Digikey
17
1
R15
100k
RES 100K OHM .25W 1%
541-100KSCT-ND
603
Digikey
18
1
SW1
SW
PUSHBUTTON
SWITCH TACTILE SPST-NO
0.05A 24V
SW400-ND Mfg.
p/n B3F-1000
SW400-ND-SWITCH-PUSHBOTTON
Digikey
19
4
TP1,TP2,TP3,TP4
TEST POINT
TEST POINT PC MULTI
PURPOSE WHT
5012K-ND
TP_90R63 ( 0.063" (1.60mm)
Hole Diameter )
Digikey
20
2
TP5,TP6
TEST POINT
TEST POINT PC MINI
.040"D WHITE
5002K-ND
TP_62R42_MINI ( 0.040"
(1.02mm) Hole Diameter )
Digikey
21
1
U1
NAU8220
Nuvoton part
TSSOP14
Nuvoton