5
dc1765af
DEMO MANUAL DC1765A
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
schematic Diagram
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
NOTE: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTORS AND CAPACITORS ARE 0603.
GND
ASSY
LTC6957HMS-1
U1
-A
LTC6957HMS-2
-B
H
L
H
L
H
L
H
L
R1-R4
130 OHM
OPT
Z1-Z4
0.01uF
0 OHM
3.15V - 3.45V
*
V+
*
R20-R21
OPT
100 OHM
LVPECL
LVDS
OUT1+
OUT1-
OUT2-
OUT2+
V+
V+
V+
V+
V+
V+
V+
REVISION HISTORY
DESCRIPTION
DATE
APPROVED
ECO
REV
MICHEL A.
PRODUCTION
3
08-16-12
__
REVISION HISTORY
DESCRIPTION
DATE
APPROVED
ECO
REV
MICHEL A.
PRODUCTION
3
08-16-12
__
REVISION HISTORY
DESCRIPTION
DATE
APPROVED
ECO
REV
MICHEL A.
PRODUCTION
3
08-16-12
__
SIZE
DATE:
IC NO.
REV.
SHEET
OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY
Fax: (408)434-0507
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 RESPONSIBILITY TO 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
3
08/16/2012, 06:45 PM
11
LOW PHASE NOISE, DUAL LVPECL OR LVDS OUTPUT
KIM T.
MICHEL A.
N/A
LTC6957HMS-1 / -2 DEMO CIRCUIT 1765A
BUFFER / DRIVER / LOGIC CONVERTER
SIZE
DATE:
IC NO.
REV.
SHEET
OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY
Fax: (408)434-0507
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 RESPONSIBILITY TO 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
3
08/16/2012, 06:45 PM
11
LOW PHASE NOISE, DUAL LVPECL OR LVDS OUTPUT
KIM T.
MICHEL A.
N/A
LTC6957HMS-1 / -2 DEMO CIRCUIT 1765A
BUFFER / DRIVER / LOGIC CONVERTER
SIZE
DATE:
IC NO.
REV.
SHEET
OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY
Fax: (408)434-0507
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 RESPONSIBILITY TO 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
3
08/16/2012, 06:45 PM
11
LOW PHASE NOISE, DUAL LVPECL OR LVDS OUTPUT
KIM T.
MICHEL A.
N/A
LTC6957HMS-1 / -2 DEMO CIRCUIT 1765A
BUFFER / DRIVER / LOGIC CONVERTER
J4
SMA-R
OUT1-
J4
SMA-R
OUT1-
JP3
SD1
JP3
SD1
1
3 2
J1
SMA-R
IN+
J1
SMA-R
IN+
R1
*
R1
*
U1U1
GND
5
IN-
4
IN+
3
V+
2
FILTA
1
OUT1-
10
OUT2-
9
OUT2+
8
SD2
7
FILTB
6
OUT1+
11
SD1
12
R4
*
R4
*
JP1
FILTA
JP1
FILTA
1
3 2
R2
*
R2
*
R20
*
R20
*
Z1
*
Z1
*
R6 OPT
R6 OPT
C13 0.1uF
C13 0.1uF
C14 1uF
C14 1uF
C8
0.01uF
C8
0.01uF
+
C16 22uF
3528
10V
+
C16 22uF
3528
10V
R15 49.9
R15 49.9
R14 OPT
R14 OPT
E2E2
R3
*
R3
*
J3
SMA-R
OUT1+
J3
SMA-R
OUT1+
R11 OPT
R11 OPT
R19 330k
R19 330k
R7 49.9
R7 49.9
C6
0.01uF
C6
0.01uF
JP2
FILTB
JP2
FILTB
1
3 2
R18 330k
R18 330k
R17 330k
R17 330k
E1E1
R21
*
R21
*
Z2
*
Z2
*
J2
SMA-R
IN-
J2
SMA-R
IN-
Z3
*
Z3
*
J6
SMA-R
OUT2+
J6
SMA-R
OUT2+
JP4
SD2
JP4
SD2
1
3 2
J5
SMA-R
OUT2-
J5
SMA-R
OUT2-
R16 330k
R16 330k
Z4
*
Z4
*
