Nuvoton NAU8220 Manual de usuario

NAU8220

NAU8220 April 2016

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

+C2

2.2uF

TP2 TEST POINT

JP2 1

15k

R1110k

1 2

TP3

TEST POINT

RIGHT OUTPUT

VCC

2.2nF

1 2

R12

10k

1 2

TP5

TEST POINT

JUMPER1_PAR

+C1

2.2uF

+C3

2.2uF

33.2

1 2

TP4

TEST POINT

NAU8220

7 8

+INR

-INR

OUTR

GND

MUTE#

VEE

CN CP

VDD

GND

UVP

OUTL

-INL

+INL

JUMPER1_PAR

MUTE LINE

DRIVER

JUMPER1_PAR

+C11

10uF

J5 RCA JACK

SWITCH TACT 6MM MOM 100GF

15k

30k

CON2

VEE

+C4

2.2uF

VCC

UVP

30k

TP1

TEST POINT

TP6

TEST POINT

+INR

R14

10K

1uF

1 2

30k

12 R6

30k

SW1

SW PUSHBUTTON

3 1

4 2

R10

33.2

JUMPER1_PAR

RCA JACK

C9 100pF

1 2

R15

100k

1 2

-INL

15k

R13

68k

15k

2.2nF

1 2

C10 1uF

1 2

1uF

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

C1,C2,C3,C4

2.2uF

CAP ALUM 2.2UF 50V 20%

RADIAL

604-1124-ND

CAP_P_5X2

Digikey

C6,C5

2.2nF

CAP CER 2200PF 50V 5%

X7R

478-6205-1-ND

603

Digikey

C7,C8 C10

1uF

CAP CER 1UF 16V 10% X7R

587-1241-1-ND

603

Digikey

100pF

CAP CER 100PF 50V 5% NP0

490-1427-1-ND

603

Digikey

C11

10uF

CAP TANT 10UF 25V 10%

2312

399-3734-1-ND

6032P

Digikey

JP2,JP1

CON3

CONN HEADER 2POS .100

VERT TIN

A32701-40-ND

SIP-3P

Digikey

J1,J2,J3,J4

JUMPER1_PAR

TEST POINT PC LOW PRO

W/OUT BASE

5021K-ND

HEADER2X100

J5,J6

RCA JACK

CONN RCA JACK R/A BLACK

PCB

CP-1418-ND

Mfg. P/N

RCJ-041

RCJ-04X

Digikey

CON2

WM4111-ND

CON2_1X2

Digikey

R1,R2,R3,R4

15k

RES 15.0K OHM .25W 1%

541-15.0KSCT-ND

603

Digikey

R5,R6,R7,R8

30k

RES 30.0K OHM 1/10W 1%

541-30.0KHCT-ND

603

Digikey

R10,R9

33.2

RES 33.2 OHM .25W 1%

541-33.2SCT-ND

603

Digikey

R12,R11.R14

10k

RES 10.0K OHM 1/10W 1%

P10.0KHCT-ND

603

Digikey

R13

68k

RES 68.0K OHM 1/10W 1%

541-68.0KHCT-ND

603

Digikey

R15

100k

RES 100K OHM .25W 1%

541-100KSCT-ND

603

Digikey

SW1

PUSHBUTTON

SWITCH TACTILE SPST-NO

0.05A 24V

SW400-ND Mfg.

p/n B3F-1000

SW400-ND-SWITCH-PUSHBOTTON

Digikey

TP1,TP2,TP3,TP4

TEST POINT

TEST POINT PC MULTI

PURPOSE WHT

5012K-ND

TP_90R63 ( 0.063" (1.60mm)

Hole Diameter )

Digikey

TP5,TP6

TEST POINT

TEST POINT PC MINI

.040"D WHITE

5002K-ND

TP_62R42_MINI ( 0.040"

(1.02mm) Hole Diameter )

Digikey

NAU8220

Nuvoton part

TSSOP14

Nuvoton

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