DC2248A - Schematic

5
4
3
2
1
REVISION HISTORY
ECO
REV
__
2
DESCRIPTION
PRODUCTION
APPROVED
DATE
CHRIS P.
09-30-15
V+OUT
J1
R55
0
CS
OUT4+
SCLK
SDI
32
J11
C12
1uF
C13
0.01uF
SMA
E12
C18
1uF
C19
0.01uF
U2
CCHD-575-25-100
1
2
EN-XO
3
VTUNE
VCC
EN
OUT-
GND
OUT+
6
5
4
R1
63.4
0805
0603
C23
OPT
13
15
17
16
14
OUT4-
OUT4+
V+OUT
5
C6
0.1uF
4
3
R17
0
2
1
C10
0.1uF
C11
0.1uF
C14
0.1uF
J5
R7
OPT
OUT0+
E11
R10
OPT
SMA
GND
J6
OUT0-
C15
0.1uF
C17
0.1uF
J7
R11
OPT
OUT1+
E9
R14
OPT
SMA
GND
J8
OUT1SMA
J9
R16
OPT
OUT2+
E4
R18
OPT
SMA
GND
J10
OUT2-
3.3V
R19
0
SW1
EG1218
SYNCON
R23
OPT
1
C37
1uF
R51
4.99K
3.3V
SYNCON
1
2
R53
OPT
3
4
2
CUSTOMER NOTICE
1B
1Y
2Y
2B
GND
2A
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
3
8
7
6
L8
FBMH1608HL331-T
C71
0.1uF
U1
LTC6951
LTC6951 - 1
TECHNOLOGY
2
SUFFIX
-1
Fout =
2.5GHz
2.7GHz
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
TITLE: SCHEMATIC
ULTRALOW JITTER MULTI-OUTPUT CLOCK
SYNTHESIZER WITH INTEGRATED VCO
N/A
SCALE = NONE
3.3V
5
ASSY
A
B
KIM T.
CHRIS P.
SIZE
1. ALL RESISTORS ARE IN OHMS, 0402
2. ALL CAPACITORS ARE IN MICROFARADS, 0402.
VCC
APPROVALS
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES.
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
APP ENG.
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
NOTE: UNLESS OTHERWISE SPECIFIED
1A
*
R12
280
D5
YELLOW
SYNC
U9
SN74LVC2G00DCU
1
R54
OPT
C35
1uF
B
SMA
R52
4.99k
OFF
C
SMA
V+BIAS
3
4
OUT3-
V+BIAS
E2
5
J4
V+BIAS
STATUS
D1
RED
R26
49.9
SMA
E3
GND
SMA
V+BIAS
E1
J13
SYNC
6
C21
1uF
R24
OPT
R6
OPT
SMA
V+BIAS
R22
OPT
SMA
A
7
R15
330
C36
OPT
REF+
8
STATUS
C2
820pF
0603
3.3V
C20
OPT
R20
OPT
C4
0.1uF
R13
1k
C16
0.1uF
R25
200
J12
V+OUT
OUT3+
E10
V+BIAS
V+XO
B
C22
10uF
1206
OUT2-
GND
9
2
L2
FBMH1608HL331-T
CS
V+VCO
CI2
OPT 0805
3.3V_REF
V+D
OUT2+
L1
0 ohm
CP
1.2nF
0603
19
BVCO
R9
10
RZ
63.4 CI1
0603 68nF 0603
REF-
REF+
C9
0.01uF
V+OUT
33
5V
C8
1uF
GND
J3
R5
OPT
V+BIAS
GND
31
L9
R8
FBMH1608HL331-T 0
C
REF-
30
OUT1-
V+CP
5V
1uF
OUT1+
CMA
GND
C7
CMB
11
10
41
29
V+OUT
40
28
CMC
SYNC
27
OUT0-
STAT
26
0603
V+OUT
GND
39
25
C5
1uF
38
C30
1uF
OUT3-
C72
0.1uF
12
1
C31
1uF
2
C32
1uF
OUT3+
OUT0+
REF+
C33
1uF
D
V+BIAS
TB
REF-
C34
1uF
OUT4SMA
*
TUNE
37
24
BB
36
23
V+REF
22
TUNE
V+OUT
U1
LTC6951
V+RF
35
21
C3
470nF
18
C1
0.01uF
C29
C28
C27
C26
C25
C24
0.01uF 0.01uF 0.01uF 0.01uF 0.01uF 0.01uF
0201 0201 0201 0201 0201 0201
SCLK
20
FBMH1608HL331-T
SDI
D
J2
R3
0
R4
0
SDO
L3
SDO
CP
V+OUT
3.3V
3.3V
34
R21
0
0603
SMA
R2
OPT
DATE:
IC NO.
REV.
LTC6951IUHF
DEMO CIRCUIT 2248A
Wednesday, September 30, 2015
2
SHEET
1
1
OF
3
A
5
4
3
2
1
D
D
U3
DC590 SPI INTERFACE
3.3V
NC7WZ17P6X
R27
200K
J14
HD2X7-079-MOLEX
V+DIG
1
V+ 2
5V
6
CS 4
SCK/SCL 7
MOSI/SDA 5
MISO
10
EEVCC 9
EESDA 11
EESCL 12
EEGND 14
AUX
SCLK
SDI
R28
100
3
4
R29
100
2
5
GND VCC
3.3V
C38
CS
SCLK
0.1uF
SDO
U4
NC7WZ17P6X
1
R31
200K
U6
WP
4
2
5
1
C42
0.1uF
R37
100
R36
0
0603
EEGND
3
GND VCC
3.3V
U5
C40
0.1uF
4
ARRAY
SCL
SDA
WP
A2
A1
A0
EEPROM
24LC025-I /ST
6
5
7
3
2
1
R32
200K
R30
100
6
SDI
C
C39
0.1uF
8
R35
4.99K
VCC
R34
4.99K
GND
R33
4.99K
13
8 GND
3 GND
GND
C
CS
6
1
2
3.3V
VCC(A) VCC(B)
GND
DIR
3
6
C41
0.1uF
5
4
SDO
R38
200K
B
B
74LVC1T45GW
NOTE: EEPROM FOR BOARD IDENTIFICATION
CUSTOMER NOTICE
APPROVALS
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES.
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
APP ENG.
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
A
TECHNOLOGY
KIM T.
CHRIS P.
TITLE: SCHEMATIC
ULTRALOW JITTER MULTI-OUTPUT CLOCK
SYNTHESIZER WITH INTEGRATED VCO
SIZE
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
4
3
N/A
SCALE = NONE
2
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
DATE:
IC NO.
REV.
LTC6951IUHF
DEMO CIRCUIT 2248A
Wednesday, September 30, 2015
2
SHEET
1
2
OF
3
A
5
4
2
3.3V_REF
U7
L4
FBMH1608HL331-T
C43
10uF
1206
3
8
IN
7
C44
0.1uF
OUT
NC
6
5
ADJ
NC
BYP
SHDN
GND
1
2
R40
17.8K
3
4
C45
0.01uF
R41
10K
D
C46
1uF
0603
+
C47
330uF
10V
7343
1
3.3V_REF
1
2
3
3.3V_REF
NC
JP1
HD1X3-079
D
LT1962EMS8
5V
5V
NC
3.3V
5V
1
2
3
C48
330uF
10V
7343
+
JP2
HD1X3-079
R39
280
C49
10uF
1206
3.3V_REF
R44
31.6K
R42
280
R45
10K
5V
R43
619
10
18
13
12
11
6
5
C
GND
GND
GND
GND
GND
GND
PWRGD2
BYP2
ADJ2
15
9
29
R47
0
0603
V+BIAS
C54
OPT
GND
GND
GND
GND
GND
GND
ADJ1
14
8
OUT2 7
OUT2
2
C55
OPT
L6
FBMH1608HL331-T
E6
C56
OPT
1206
E7
19
24
25
26
3
4
27
E8
C62
0.1uF
PWRGD1
C61
10uF
1206
EP
23
J16
GND
16
17 IN2
IN2
20
21 IN1
IN1
L7
FBMH1608HL331-T
22
JACK BANANA
C58
0.1uF
BYP1
C57
10uF
1206
D4
5V
GREEN
LT3030EUFD
28
JACK BANANA
C53
0.1uF
SHDN2
C52
10uF
1206
6V - 9V
J15
2
1
U8
C51
0.01uF
SHDN1
2
1 OUT1
OUT1
E5
D3
1
3.3V_REF
GREEN
R46
1M
L5
FBMH1608HL331-T
2
3.3V
GREEN
C65
OPT
C
D2
1
C50
0.01uF
R48
1M
B
POWER SUPPLIES
R49
17.4K
3.3V
+
C69
330uF
10V
7343
C64
OPT
C66
OPT
C67
OPT
C70
10uF
1206
CUSTOMER NOTICE
APPROVALS
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES.
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
APP ENG.
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
A
C63
OPT
TECHNOLOGY
KIM T.
CHRIS P.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
ULTRALOW JITTER MULTI-OUTPUT CLOCK
SYNTHESIZER WITH INTEGRATED VCO
4
3
N/A
SCALE = NONE
2
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
TITLE: SCHEMATIC
SIZE
5
B
3.3V
3
2
1
JP3
HD1X3-079
C60
OPT
GND
R50
10K
C68
OPT
3.3V
NC
C59
OPT
V+REBIAS
DATE:
IC NO.
REV.
LTC6951IUHF
DEMO CIRCUIT 2248A
Wednesday, September 30, 2015
2
SHEET
1
3
OF
3
A
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