LTC6431-15

13

643115f

5

5

4

4

3

3

2

2

1

1

D

D

C

C

B

B

A

A

1. ALL RESISTORS ARE IN OHMS, 0402.

ALL CAPACITORS ARE 0402.

NOTE: UNLESS OTHERWISE SPECIFIED

CAL IN

CAL OUT

GND

+5V

OPTIONAL CIRCUIT

100-1200 MHz

FREQ.

ASSY

U1

T3, T4

*

R13,R14,R17,R18

R3, R4

J8

OPT

OPT

OPT

1008

+IN

+OUT

J10

-C

LTC6431IUF-15

OPT

0 OHM

OPT

STUFF

OPT

JOHN C.

PRODUCTION

2

08-18-11

__

REVISION HISTORY

DESCRIPTION

DATE

APPROVED

ECO REV

1

Monday, June 25, 2012

11

IF AMP/ADC DRIVER

KIM T.

JOHN C.

N/A

LTC643XIUF FAMILY

DEMO CIRCUIT 1774A

SIZE

DATE:

IC NO.

REV.

SHEET

OF

TITLE:

APPROVALS

PCB DES.

APPENG.

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

CUSTOMER NOTICE

LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITYTO

VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL

APPLICATION. COMPONENT SUBSTITUTION AND PRINTED

CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT

PERFORMANCE OR RELIABILITY. CONTACT LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SCHEMATIC

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

SCALE = NONE

www.linear.com

VCC

VCC

VCC

VCC

J7

SMA-R

R5

348

C11

1000pF

L1

560nH

C13

1000pF

C18

1000pF

JP2

HD2X4-100

L11

OPT

JP3

HD2X4-100

C21

1000pF

J11

+5V

C19

1000pF

R2

348

E6

C16

1000pF

J5

SMA-R

T1

SEE BOM

6

4

1

5

3

C8

62pF

C22

0.1uF

C17

1000pF

J6

SMA-R

C10

62pF

C12

62pF

E3

JP1

HD2X6-100

12

34

56

78

9 10

11 12

T2

SEE BOM

6

4

1

5

3

U1

*

2

14

1

4

6

17

18

16

5

15

13

3

DNC

GND

DNC

DNC

DNC

GND

+OUT

T_DIODE

DNC

DNC

DNC

DNC

C1

1000pF

J18

GND

R6

348

J10

SMA-R

*

C7

1000pF

C20

1000pF

C3

1000pF

applicaTions inForMaTion

Figure 2. DC1774A-C Demo Board Schematic

Figure 3. Demo Board

643115 F03