Linear Technology 2429A Quick setup guide

1
dc2429af
DEMO MANUAL DC2429A
Description
LT3042
PLL/VCO Supply and
Reference Board
Demonstration Circuit 2429A is a PLL/VCO Supply and
Reference Board that features the LT
®
3042, an ultralow
noise and ultrahigh PSRR RF linear regulator. When
powered from any lab or wall wart supply, the DC2429A
produces four ultralow noise supplies and an ultralow
noise 100MHz reference that ensures PLL/VCO evaluation
meets data sheet performance.
Functionally, this circuit produces four separate ultralow
noise supplies from a single 6V to 20V supply input.
These supplies provide a fixed 3.3V/800mA supply, a fixed
5V/200mA supply, a variable voltage/200mA supply and a
fixed3.3V/200mA supply that powers an onboard 100MHz
reference.Thevariablesupplyisidealforpoweringexternal L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
VCOs, by providing a jumper option that selects between
seven common VCO power supply voltages.
The onboard 100MHz reference is capable of providing a
signal which is clean enough to produce data sheet per-
formance from a PLL/VCO. The default reference output
mates directly with the LTC
®
6945, LTC6946, LTC6947 and
LTC6948 demo board reference inputs. For evaluation of
PLL/VCOs with other references, the DC2429A can be
modified to accommodate different onboard reference
frequencies, signal types and package footprints.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2429A
Figure 1. DC2429A Connections
OUTPUT SUPPLY
3.3V, 800mA
BANANA JACK OR TURRET
SUPPLY OPTIONS
ON/OFF CONTROL VIA JP1, JP2, JP3, JP4
REFERENCE OPTIONS
SUPPORTS A VARIETY OF FOOTPRINTS (U7),
FREQUENCIES AND SE/DIFF OUTPUT TYPES
INPUT SUPPLY
6V TO 29V, MAX 1.4A
WALL WART, BANANA JACK OR TURRET
FOR BEST PERFORMANCE, USE SHIELDED CABLES
OUTPUT SUPPLY
VARIABLE V, 200mA
BANANA JACK OR TURRET
DEFAULT VOLTAGE: 5V
JUMPER SELECTABLE (JP5)
OUTPUT SUPPLY
5V, 200mA
BANANA JACK OR TURRET
REF+ OUTPUT
100MHz, CMOS
MALE SMA
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dc2429af
DEMO MANUAL DC2429A
Quick start proceDure
SETUP
Follow the steps provided in Figure 2 below. When using
a switching supply in Step 1, it is best to use a shielded
BNC power supply cable with BNC to banana plug adap-
tors in Steps 1, 2, 3 and 6 to avoid coupling between the
input supply and output supplies.
Figure 2. DC2429A Setup
LEDs D1 to D4 should illuminate when power is applied in
Step 1. If the LEDs do not illuminate, verify jumpers JP1 to
JP4 are set to the ON position. If D4 does not illuminate,
verify Step 1’s input voltage is at least 350mV greater
than the desired voltage on the Variable, 200mA supply.
1. CONNECT 6V TO 20V
SUPPLY. (SHOULD BE
350mV GREATER THAN
THE HIGHER OF 6V OR
THE VARIABLE, 200mA
SUPPLY SETTING IN STEP 5)
2. CONNECT 3.3V, 800mA
SUPPLY TO PLL/VCO
DEMO BOARD 3.3V SUPPLY
3. CONNECT 5V, 200mA
SUPPLY TO PLL/VCO
DEMO BOARD 5V SUPPLY
4. CONNECT REF+ (J7) TO
PLL/VCO DEMO BOARD
3.3V SUPPLY
6. (FOR EXTERNAL VCOs)
CONNECT VARIABLE,
200mA SUPPLY TO
PLL/VCO DEMO BOARD
VCO SUPPLY
5. (FOR EXTERNAL VCOs)
SELECT CORRECT VCO
VOLTAGE
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dc2429af
DEMO MANUAL DC2429A
typical Dc2429a reQuirements anD characteristics
Table 1. DC2429A Assembly Options
PARAMETER INPUT OR OUTPUT PHYSICAL LOCATION DETAILS
6V to 20V Power Supply Input J1 Wall Wart Connector or
J2 and J3 BNC Banana Jacks
6V to 20V input power supply voltage must be 350mV greater than
the higher of 6V or the desired variable, 200mA output voltage.
Up to 1.4A current consumption.
LEDs D1-D4 illuminate when power supplied.
To avoid coupling between input and output supplies it is best to
use shielded power supply cables.
3.3V, 800mA Output J4 and J5 BNC Banana Jacks Load shares 4 LT3042 to achieve 800mA output current capability.
See schematic.
5V, 200mA Output J8 and J9 BNC Banana Jacks
Variable, 200mA Output J10 and J11 BNC Banana
Jacks
JP5 selects output voltage
6V to 20V input power supply voltage must be 350mV greater than
the higher of 6V or the desired variable, 200mA output voltage.
Variable, 200mA
Output Voltage Selection
Input JP5 Selects variable, 200mA supply output voltage
(Options: 2.5V, 3.3V, 5V, 8V, 10V, 12V, 15V).
REF+ Output J7 Male SMA connector
.
100MHz, 3.3V CMOS thru 100Ω series, AC coupled.
REF– Output J6 (not installed) Default: not installed. Install if differential reference is desired.
3.3V Jumper Input JP1 Default: set to ON.
Connected to LT3042 EN/UV pin (U1, U4, U5 and U6).
3.3V_REF Jumper Input JP2 Default: set to ON.
Connected to LT3042 EN/UV pin (U2).
5V Jumper Input JP3 Default: set to ON.
Connected to LT3042 EN/UV pin (U3).
Variable Jumper Input JP4 Default: set to ON.
Connected to LT3042 EN/UV pin (U8).
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dc2429af
DEMO MANUAL DC2429A
parts list
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
Required Circuit Components
1 16 C1, C3-C7, C9-C11, C19-C21,
C23-C25, C35
CAP., X7R, 4.7µF, 50V, 10%, 1206 MURATA, GRM31CR71H475KA12L
2 0 C2, C8, C18, C22 CAP., ALUM. ELECT., 10µF, 50V, 10%, CE-BSS SUN ELECT., 50CE10BSS
3 0 C12 CAP., 0603 OPT
4 4 C13, C14, C16, C17 CAP., X7R, 1µF, 16V, 10%, 0603 MURATA, GRM188R71C105KA12D
5 1 C15 CAP., X7R, 0.01µF, 16V, 10%, 0603 MURATA, GRM188R71C103KA01D
6 7 C26-C28, C32-C34, C37 CAP., X7R, 0.1µF, 16V, 10%, 0603 MURATA, GRM188R71C104KA01D
7 3 C29, C30, C31 CAP., X7R, 0.47µF, 50V, 10%, 0805 MURATA, GRM21BR71H474KA88L
8 1 C36 CAP., ALUM. ELECT., 22µF, 50V, 10%, CE-BSS SUN ELECT., 50CE22BSS
9 4 D1, D2, D3, D4 LED, GREEN, LED-ROHM-SML-01 ROHM, SML-012P8TT86
10 9 E1-E9 TURRET, 0.064" MILL-MAX, 2308-2-00-80-00-00-07-0
11 4 JP1-JP4 CONN., HEADER, 1x3, 2mm WURTH ELEKTRONIK, 62000311121
12 1 JP5 CONN., HEADER, 2X7, 2mm SULLINS, NRPN072PAEN-RC
13 1 J1 CONN., PWR JACK, CON-CUI-PJ002AH CUI INC., PJ-002AH
14 8 J2-J5, J8-J11 JACK, BANANA KEYSTONE, 575-4
15 0 J6 CONN., SMA 50-OHM EDGE-LAUNCH OPT
16 1 J7 CONN., SMA 50-OHM EDGE-LAUNCH, MALE EF JOHNSON, 142-0801-801
17 1 L1 IND, FERRITE BEAD, L-0603LS-1608 TAIYO YUDEN, FBMH1608HL121-T
18 3 L2-L4 IND, FERRITE BEAD, L-0603LS-1608 TAIYO YUDEN, FBMH1608HL331-T
19 2 R1, R11 RES., CHIP, 280, 1/10W 1%, 0603 VISHAY, CRCW0603280RFKEA
20 4 R2, R3, R8, R9 RES., CHIP, 0.05, 1/4W 5%, 0805 PANASONIC, ERJ-L06KJ50MV
21 2 R4, R10 RES., CHIP, 453k, 1/8W 1%, 0805 VISHAY, CRCW0805453KFKEA
22 4 R6, R13, R25, R26 RES., CHIP, 49.9k, 1/8W 1%, 0805 VISHAY, CRCW080549K9FKEA
23 1 R7 RES., CHIP, 8.25k, 1/8W 1%, 0805 VISHAY, CRCW08058K25FKEA
24 1 R14 RES., CHIP, 33.2k, 1/8W 1%, 0805 VISHAY, CRCW080533K2FKEA
25 0 R15-R18, R20, R21 RES., 0603 OPT
26 1 R19 RES., CHIP, 100, 1/10W 1%, 0603 VISHAY, CRCW0603100RFKEA
27 1 R22 RES., CHIP, 698k, 1/8W 1%, 0805 VISHAY, CRCW0805698KFKEA
28 1 R23 RES., CHIP, 619, 1/10W 1%, 0603 VISHAY, CRCW0603619RFKEA
29 1 R27 RES., CHIP, 1.21k, 1/10W 1%, 0603 VISHAY, CRCW06031K21FKEA
30 1 R28 RES., CHIP, 24.9k, 1/4W 1%, 1206 VISHAY, CRCW120624K9FKEA
31 1 R29 RES., CHIP, 33.2k, 1/4W 1%, 1206 VISHAY, CRCW120633K2FKEA
32 1 R30 RES., CHIP, 49.9k, 1/4W 1%, 1206 VISHAY, CRCW120649K9FKEA
33 1 R31 RES., CHIP, 80.6k, 1/4W 1%, 1206 VISHAY, CRCW120680K6FKEA
34 1 R32 RES., CHIP, 100k, 1/4W 1%, 1206 VISHAY, CRCW1206100KFKEA
35 1 R33 RES., CHIP, 121k, 1/4W 1%, 1206 VISHAY, CRCW1206121KFKEA
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dc2429af
DEMO MANUAL DC2429A
parts list
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
36 1 R34 RES., CHIP, 150k, 1/4W 1%, 1206 VISHAY, CRCW1206150KFKEA
37 7 U1-U6, U8 I.C., DFN10DD-3X3 LINEAR TECH., LT3042EDD
38 1 U7 I.C., 100MHz OSCILLATOR, OSC-VCXO/CVS575S CRYSTEK, CCHD-575-25-100.000
39 5 SHUNT ON JP1-JP5 AS SHOWN ON
ASSY DWG
SHUNT, 2mm WURTH ELEKTRONIK, 60800213421
40 4 MH1-MH4 STANDOFF, NYLON, 0.5, 1/2" WURTH ELEKTRONIK, 702935000
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dc2429af
DEMO MANUAL DC2429A
schematic Diagram
5 5
4 4
3 3
2 2
1 1
D
D
C
C
B
B
A
A
3.3V, 800mA SUPPLY
3.3V, 100MHz REF OUT
5V, 200mA SUPPLY
1. ALL RESISTORS AND CAPACITORS ARE 0603. NOTES: UNLESS OTHERWISE SPECIFIED
IF LT3042 VIN - VOUT > 12V, THEN MAXIMUM CURRENT LISTED FOR GIVEN SUPPLY DECREASES - REFER TO LT3042 DATASHEET
VIN
VIN
U1_EN
U1_EN
U1_SET
U1_SET
U1_EN
VIN
VIN
U1_EN
3.3V
U1_SET U1_SET
INPUT
REVISION HISTORY DESCRIPTION DATEAPPROVEDECO REV
CHRIS P.PRODUCTION
__ 1 10-08-15
REVISION HISTORY DESCRIPTION DATEAPPROVEDECO REV
CHRIS P.PRODUCTION
__ 1 10-08-15
REVISION HISTORY DESCRIPTION DATEAPPROVEDECO REV
CHRIS P.PRODUCTION
__ 1 10-08-15
SIZE DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: [phone]
Milpitas, CA 95035 Phone: [phone] 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
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1
DEMO CIRCUIT 2429A
Thursday, October 08, 2015
12
PLL/VCO SUPPLY AND REFERENCE BOARD
N/A
KIM T.
CHRIS P.
SIZE DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: [phone]
Milpitas, CA 95035 Phone: [phone] 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
1
DEMO CIRCUIT 2429A
Thursday, October 08, 2015
12
PLL/VCO SUPPLY AND REFERENCE BOARD
N/A
KIM T.
CHRIS P.
SIZE DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: [phone]
Milpitas, CA 95035 Phone: [phone] 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
1
DEMO CIRCUIT 2429A
Thursday, October 08, 2015
12
PLL/VCO SUPPLY AND REFERENCE BOARD
N/A
KIM T.
CHRIS P.
R10 453k 0805
C21 4.7uF 1206 25V
R17 OPT
R11 280
J4
3.3V, 800mA
KEY-575-4
C29 0.47uF 0805 50V
E1
VIN
JP1 3.3V
ON
OFF
HD1X3-079
1 3 2
R22 698k 0805
R7 8.25k 0805
C32 0.1uF C33 0.1uF
R16 OPT
C17 1uF
C11 4.7uF 1206 25V
C35 4.7uF 1206 50V
D3 GREEN 5V
2 1
C34 0.1uF
JP2
3.3V REF
ON
OFF
HD1X3-079
1 3 2
+
C8 10uF 50V OPT
L1
FBMH1608HL121-T
J3
GND
KEY-575-4
C14 1uF
R3
0.05 0805
J2
VIN
6V - 20V
KEY-575-4
C4 4.7uF 1206 25V
J9
GND
KEY-575-4
V+XO1
C20 4.7uF 1206 25V C10 4.7uF 1206 25V
C31 0.47uF 0805 50V
C12 OPT
R4 453k 0805
R21 OPT
C19 4.7uF 1206 50V
C1 4.7uF 1206 25V
E6
GND
R14
33.2k
0805
C30 0.47uF 0805 50V
R25 49.9k 0805
EN-XO1
C5 4.7uF 1206 25V
R8 0.05 0805
+
C2 10uF 50V OPT
R23 619
C15 0.01uF
J7 SMA, MALE
REF+
D1
GREEN
3.3V
21
+
C36 22uF 50V
R13 49.9k 0805
C9 4.7uF 1206 50V
J5
GND
KEY-575-4
C26 0.1uF
U2
LT3042EDD
GND 8
PGFB 6
SET 7
OUTS 9
OUT 10
EP
11
EN/UV
3
ILIM
5
PG
4
IN
2
IN
1
C6 4.7uF 1206 25V
J8 5V, 200mA
KEY-575-4
C7 4.7uF 1206 25V
C13 1uF
U7
CCHD-575-25-100
VTUNE
1
EN
2
GND
3OUT+ 4
OUT- 5
VCC 6
R9 0.05 0805
C16 1uF
R15 OPT
R6 49.9k 0805
J6
SMA
REF-
OPT
U6
LT3042EDD
GND
8
PGFB
6
SET
7
OUTS
9
OUT
10
EP
11
EN/UV 3
ILIM 5
PG 4
IN 2 IN 1
C3 4.7uF 1206 50V
C27 0.1uF
J1
PJ-002AH
6V - 20V
2 3 1
R19 100
U4
LT3042EDD
GND
8
PGFB
6
SET
7
OUTS
9
OUT
10
EP
11
EN/UV 3
ILIM 5
PG 4
IN 2 IN 1
U5
LT3042EDD
GND
8
PGFB
6
SET
7
OUTS
9
OUT
10
EP
11
EN/UV 3
ILIM 5
PG 4
IN 2 IN 1
R1 280
R18
OPT
E3
3.3V, 800mA
D2 GREEN
REF
2 1
L3
FBMH1608HL331-T
L2
FBMH1608HL331-T
JP3
5V
ON OFF
HD1X3-079
1 3 2
U3
LT3042EDD
GND 8
PGFB 6
SET 7
OUTS 9
OUT 10
EP
11
EN/UV
3
ILIM
5
PG
4
IN
2
IN
1
R26
49.9k
0805
R20 OPT
+
C18 10uF 50V OPT
R2 0.05 0805
C28 0.1uF
U1
LT3042EDD
GND 8
PGFB 6
SET 7
OUTS 9
OUT 10
EP
11
EN/UV
3
ILIM
5
PG
4
IN
2
IN
1
E4
GND
E5
5V, 200mA
E2
GND
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dc2429af
DEMO MANUAL DC2429A
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
VARIABLE, 200mA SUPPLY
2.5V
3.3V
5V
8V
10V
12V
15V
IF LT3042 VIN - VOUT > 12V, THEN MAXIMUM CURRENT LISTED FOR GIVEN SUPPLY DECREASES - REFER TO LT3042 DATASHEET
INPUT
SIZE DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: [phone]
Milpitas, CA 95035 Phone: [phone] 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
1
DEMO CIRCUIT 2429A
Thursday, October 08, 2015
22
PLL/VCO SUPPLY AND REFERENCE BOARD
N/A
KIM T.
CHRIS P.
SIZE DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: [phone]
Milpitas, CA 95035 Phone: [phone] 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
1
DEMO CIRCUIT 2429A
Thursday, October 08, 2015
22
PLL/VCO SUPPLY AND REFERENCE BOARD
N/A
KIM T.
CHRIS P.
SIZE DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: [phone]
Milpitas, CA 95035 Phone: [phone] 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
1
DEMO CIRCUIT 2429A
Thursday, October 08, 2015
22
PLL/VCO SUPPLY AND REFERENCE BOARD
N/A
KIM T.
CHRIS P.
R30 49.9k 1206
R34 150k 1206
J11
GND
KEY-575-4
R27 1.21k
C23 4.7uF 1206 50V
C37 0.1uF
JP4
VARIABLE
HD1X3-079
ON OFF
1 3 2
E9
VEXT
R28 24.9k 1206
R33 121k 1206
E8
GND
U8
LT3042EDD
GND 8
PGFB 6
SET 7
OUTS 9
OUT 10
EP
11
EN/UV
3
ILIM
5
PG
4
IN
2
IN
1
R29 33.2k 1206
C24 4.7uF 1206 25V E7
VARIABLE, 200mA
R32 100k 1206
J10
KEY-575-4
VARIABLE, 200mA
C25 4.7uF 1206 25V
R31 80.6k 1206
D4
GREEN VARIABLE
2 1
+
C22 10uF 50V OPT
JP5 HD2X7-079
7
12
21
3
5
11
9
6
4
10
8
13 14
L4
FBMH1608HL331-T
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dc2429af
DEMO MANUAL DC2429A
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ●FAX: [phone] ●www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2016
LT 0216 • PRINTED IN USA
DEMONSTRATION BOARD IMPORTANT NOTICE
Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions:
This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT
OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use. As such, the DEMO BOARD herein may not be complete
in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety
measures typically found in finished commercial goods. As a prototype, this product does not fall within the scope of the European Union
directive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive, or other regulations.
If this evaluation kit does not meet the specifications recited in the DEMO BOARD manual the kit may be returned within 30 days from the date
of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY THE SELLER TO BUYER AND IS IN LIEU
OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS
FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THIS INDEMNITY, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR
ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.
The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user releases LTC from all claims
arising from the handling or use of the goods. Due to the open construction of the product, it is the user’s responsibility to take any and all
appropriate precautions with regard to electrostatic discharge. Also be aware that the products herein may not be regulatory compliant or
agency certified (FCC, UL, CE, etc.).
No License is granted under any patent right or other intellectual property whatsoever. LTC assumes no liability for applications assistance,
customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind.
LTC currently services a variety of customers for products around the world, and therefore this transaction is not exclusive.
Please read the DEMO BOARD manual prior to handling the product. Persons handling this product must have electronics training and
observe good laboratory practice standards. Common sense is encouraged.
This notice contains important safety information about temperatures and voltages. For further safety concerns, please contact a LTC application
engineer.
Mailing Address:
Linear Technology
1630 McCarthy Blvd.
Milpitas, CA 95035
Copyright © 2004, Linear Technology Corporation
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