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LX1790 E

VALUATION 

B

OARD

 

U

SER 

G

UIDE

 

 

Copyright © 2002

 

Microsemi

 

Page 8

 

Rev 0.2, 3/4/2002

 

Integrated Products – Power Management

 

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

 

 

B

ILL 

O

M

ATERIALS

 

 

    

M I S C E L L A N E O U S   C O M P O N

M I S C E L L A N E O U S   C O M P O N

M I S C E L L A N E O U S   C O M P O N

M I S C E L L A N E O U S   C O M P O N E N T S

E N T S

E N T S

E N T S     

Line 
Item 

Part Description 

Manufacturer & Part # 

Case 

Reference       

Designators 

Qty 

1 Class-D 

Amplifier 

IC 

M

ICROSEMI

 LX1790CN* 

 U1 

2 Banana 

Jack, 

Black 

M

OUSER

 164-6218 

TH J4 

Banana Jack, Red 

M

OUSER

 164-6219 

TH J3 

4 BNC 

Connector 

M

OUSER

 523-31-5486-1010 

 J1, 

J5, 

J6 

DPDT Slide Switch 

M

OUSER

 

612-EG2201

 

 SW1 

DP3T Slide Switch 

M

OUSER

 612-EG2301 

 SW2, 

SW3, 

SW4 

RCA Jack, Red 

M

OUSER

 161-0096 

 J2 

8 Transformer 

M

OUSER

 42TL016 

 T1 

14 Pin Cerdip Socket 

M

OUSER

 571-26403574 

 U1 

10 

¼” Stereo Jack 

M

OUSER

 

161-0030

 

 J7 

    

    

C A P A C I T O R S

C A P A C I T O R S

C A P A C I T O R S

C A P A C I T O R S     

Line 
Item 

Part Description 

Part Description 

Case 

Reference       

Designators 

Qty 

1 Capacitor, 

10µF, 

Electrolytic 

 

 

C1 

2 Capacitor, 

1nF 

 

 

C6 

Capacitor, 100nF Ceramic 

 

 

C2, C5 

 

    

    

R E S I S T O R S

R E S I S T O R S

R E S I S T O R S

R E S I S T O R S     

Line 
Item 

Part Description 

Part Description 

Case 

Reference       

Designators 

Qty 

  

Resistor, 5.1k

  

  

R1 

* Evaluation Board contains 1 LX1790CN part, order additional samples separately.  

  

Summary of Contents for LX1790EVAL CLASS-D

Page 1: ...Copyright 2002 Rev 0 2 3 4 2002 LX1790EVAL CLASS D AUDIO AMPLIFIER EVALUATION BOARD USER GUIDE I N T E G R A T E D P R O D U C T S...

Page 2: ...Management 11861 Western Avenue Garden Grove CA 92841 714 898 8121 Fax 714 893 2570 TABLE OF CONTENTS LX1790 Evaluation Board Features and Circuit Description 3 Input Select Gain Select Impedance Sele...

Page 3: ...for measurement and analysis Because the FETs have an extremely low on resistance and an extremely high off resistance the majority 95 typical of the power is delivered to the load making it a highly...

Page 4: ...t order RC low pass filter with a cutoff frequency of 20kHz This filter removes the 200kHz switching frequency from the signal BREADBOARD The LX1790 gives the user the option of connecting the amplifi...

Page 5: ...ut Select The Headphone setting will directly connect the differential output of the amplifier to the headphone jack The Single Ended setting will connect the differential amplifier output to a transf...

Page 6: ...ove CA 92841 714 898 8121 Fax 714 893 2570 12 Audio Source Verify that a low level audio source is being used and set it to the minimum level Start or play audio source and adjust volume to desired le...

Page 7: ...3 4 5 6 7 8 9 10 11 12 13 14 C5 C1 C2 J3 J4 Breadboard R1 C6 1 2 3 4 5 6 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 1 2 2 1 2 3 4 8 7 6 5 1 2 3 4 5 6 1 2 1 2 1 2 3 BNC RCA RCA IN BNC IN Input Select Banana Ban...

Page 8: ...TH J3 1 4 BNC Connector MOUSER 523 31 5486 1010 J1 J5 J6 3 5 DPDT Slide Switch MOUSER 612 EG2201 SW1 1 6 DP3T Slide Switch MOUSER 612 EG2301 SW2 SW3 SW4 3 7 RCA Jack Red MOUSER 161 0096 J2 1 8 Transfo...

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