DC1846A - Demo Manual

DEMO MANUAL DC1846A
LTC6947
Ultralow Noise and Spurious
Fractional-N Synthesizer
DESCRIPTION
Demonstration circuit 1846A features the LTC®6947, an
Ultralow Noise and Spurious Fractional-N Synthesizer.
DC1846A provides 50Ω SMA connectors for the reference
frequency (REF+) and the two single-ended RF outputs
(RF+ and RF–).
A DC590 USB serial controller board is used for SPI communication with the LTC6947, controlled by the supplied
FracNWizard™ software.
Design files for this circuit board are available at
http://www.linear.com/demo
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
FracNWizard is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
Frequency reference input, SMA Active loop filter op‐
amp DC supply, turret U3 (VCO) DC supply, turret Enable (pin 2) of U4 (VCO or VCXO), turret Ribbon cable connection to DC590 U4 (VCO or VCXO) DC supply, turret External VCO input, SMA 3.3 V DC supply, banana jacks Differential output of VCO buffer, SMA 5 V DC supply, banana jacks
Figure 1. DC1846A Connections
dc1846af
1
DEMO MANUAL DC1846A
QUICK START PROCEDURE
The DC1846A is easy to set up to evaluate the performance
of the LTC6947. Follow the procedure below.
Connect the DC590 to one of your computer’s USB ports
with the included USB cable.
The DC590 and FracNWizard application are required to
control the DC1846A through a personal computer (PC).
FracNWizard Installation
DC590 Configuration
Place the DC590 jumpers in the following positions (refer
to Figure 2):
JP4: EE – Must be in the EN position.
JP5: ISO – ON must be selected.
The FracNWizard software is used to communicate with
the LTC6947 synthesizer. It uses the DC590 to translate
between USB and SPI-compatible serial communications formats. It also includes advanced PLL design and
simulation capabilities. The following are the FracNWizard
system requirements:
• Windows Operating System: Windows XP, Windows
2003 Server, Windows Vista, Windows 7
JP5: SW – ON must be selected.
JP6: VCCIO – 3.3V must be selected. This sets the SPI
port to 3.3V operation.
• Microsoft .NET 3.5 SP1 or later
• Windows Installer 3.1 or later
• Linear Technology’s DC590 hardware
J4, ribbon cable connection to the DC1846 J3, USB connection to PC JP4 jumper JP6 jumpers JP5 jumpers Figure 2. DC590 Jumper and Connector Locations
dc1846af
2
DEMO MANUAL DC1846A
QUICK START PROCEDURE
Download the FracNWizard setup file at:
2.Choose the MUTE jumper setting:
www.linear.com/FracNWizard
JP1: GND/3.3V - MUTE position. Select GND to mute
the RF output, 3.3V to unmute.
Run the FracNWizard setup file and follow the instructions
given on the screen. The setup file will verify and/or install
Microsoft .NET and install the FracNWizard. Refer to the
Help menu for software operation.
DC1846A Configuration
1.Connect a 100MHz reference frequency source (at J2)
and signal analyzers to RF+ and/or RF– (at J6 and/or
J7) using the SMA connectors (see Figure 1 and the
Typical DC1846A Requirements and Characteristics
table).
Be sure to terminate any unused RF output with 50Ω, or
poor spurious performance may result.
3.Connect the GND, 3.3V, 5V banana jacks and the
V+VCO turret to a power supply and apply power (see
Figure 1 and the Typical DC1846A Requirements and
Characteristics table).
4.Connect the DC590 to the DC1846A with the provided
ribbon cable.
5.Run the FracNWizard application.
6.In FracNWizard, click File -> Load Settings and point
to the “LTC6947_100MHz.fracnset” file.
The red LED on the DC1846A should turn on indicating
that the loop is locked at 2415MHz.
Figure 3. FracNWizard Screenshot
dc1846af
3
DEMO MANUAL DC1846A
QUICK START PROCEDURE
Troubleshooting
If the red LED does not illuminate, follow the instructions
below:
2.Verify that the 3.3V, 5V and V+VCO have the correct
voltages on them and that the reference frequency is
applied to the REF+ SMA input.
1.Verify that you are able to communicate with the
DC1846A. The bottom status line in FracNWizard
should read “LTC6947” and “Comm Enabled”. Refer
to FracNWizard’s Troubleshoot and Help if not.
If the red LED is on but you cannot detect an RF output,
make sure the DC1846A jumper JP1 is at the 3.3V position.
Run Help -> Troubleshoot in FracNWizard if the problem
is not resolved.
DC1846A RECONFIGURATION
The DC1846A is flexible and allows the use of a variety of
VCOs and the choice to employ either an active or passive loop filter. The following covers the hardware reconfiguration of the DC1846A. Refer to FracNWizard’s Help
and the LTC6947 data sheet to better understand how to
change programmed parameters on the DC1846A.
Installing Different Tunable Devices
The DC1846A permits the use of different tunable oscillators, such as VCOs and VCXOs. There are two different
oscillator footprints on the board: U3, which accommodates
the popular 0.5 × 0.5 in. package, and U4, which accommodates another common 14mm × 9 mm package with
four or six pins. An external connectorized VCO can also
drive the LTC6947 through J5. Table 1 gives options to
customize the DC1846’s VCOs. When using an active loop
filter, an additional pole is required in the loop filter to limit
the op amp’s noise contribution to the VCO phase noise.
Selecting Loop Filter Type
The DC1846A can use either an active or a passive loop
filter, depending upon the application. Some VCO tuning
voltage ranges are greater than the LTC6947 charge pump
voltage range (refer to the LTC6947 data sheet). In such
cases, an active loop filter using an op amp can deliver
the required tuning voltage. Table 2 summarizes these
options. FracNWizard helps determine the component
values listed in this table.
Table 1. Oscillator Options
TUNABLE
DEVICE
SELECTION
COMPONENTS
RESISTOR FOR
ADDITIONAL POLE
CAPACITOR FOR
ADDITIONAL POLE
POWER
ENABLE PIN OR
REMARKS
Determined by U3
device power supply
specification, up to 24V
Pick C3_F2 such that
1/(2π × R2_F2 × C3_F2) ≅ applied to V+VCO turret
15 × the loop bandwidth in
Hz for active loop filter
U3*
C26 ≅ 100pF, depopulate R2_F2 = 0Ω for passive
loop filter*
R2_F3, C25 and C28*
R2_F2 = 75Ω for active
loop filter
C3_F2 = Open for passive
loop filter*
U4
C28 ≅ 100pF, depopulate R2_F3 = 0Ω for passive
loop filter
R2_F2, C25 and C26
R2_F3 ≅ 75Ω for active
loop filter
Determined by U4
Use EN turret to control
device power supply
pin 2 of U4 if needed
specification, up to 24V
Pick C3_F3 such that
1/(2π × R2_F3 × C3_F3) ≅ applied to V+VCXO turret
15 × the loop bandwidth in
Hz for active loop filter
External
C25 ≅ 100pF, R15 = 0Ω
Ohms, depopulate R13,
C26 and C28
-
C3_F3 = Open for passive
loop filter
-
-
Selection components
are for an active loop
filter. Connect the
external VCO output to
J5. Use CPGAIN to tune
the external device.
*These are the default installation options. For the DC1846A-A, U3 is populated with CVCO55CC-2328-2536 from Crystek
dc1846af
4
DEMO MANUAL DC1846A
DC1846A RECONFIGURATION
Table 2. Loop Filter Options
LOOP FILTER
TYPE
SELECTION
RESISTORS
RZ FROM
FRACNWIZARD
CI FROM
FRACNWIZARD
CP FROM
FRACNWIZARD
POWER
CPINV BOX,
SYSTEM TAB IN
FRACNWIZARD
Passive
R14 and R16 = 0Ω, RZ_P
depopulate R13 and
R15
CI1_P in parallel
with CI2_P
CP_P
None
Unchecked
Active
R13 (except when
RZ_A
using an external
VCO) and R15 = 0Ω,
depopulate R14 and
R16
CI1_A in parallel
with CI2_A
CP_A
Determined by the
maximum allowed
tune voltage of the
populated VCO (U3
or U4), up to 24V
applied to V+OA
turret
Checked
TYPICAL DC1846A REQUIREMENTS AND CHARACTERISTICS
PARAMETER
INPUT OR OUTPUT
PHYSICAL LOCATION
DETAILS
3.3V Power Supply
Input
J9 and J10 banana jacks
Low noise and spur-free 3.3V,
103mA**
5V Charge Pump Power Supply
Input
J11 and J12 banana jacks
Low noise and spur-free 5V,
22mA**
5V VCO Power Supply
Input
V+VCO turret
Low noise and spur-free 5V,
30mA**
REF+, Reference Frequency
Input
J2 SMA connector
Low noise 100MHz**, 6 to 10dBm
into 50Ω, see Note
RF+ and RF–
Two Outputs
J6 and J7 SMA connectors***
2328 to 2536MHz** in 190.7Hz**
steps, 0dBm
Loop Bandwidth
–
Set by loop filter component values
30.7kHz**
**These values are for the “DC1846A_100MHz.fracnset” file and included VCO.
***Any unused RF output must be terminated with 50Ω, or poor spurious performance may result.
Note: A low noise 100MHz reference frequency, such as the Wenzel 501-04516D OCXO, is recommended. If using a
different frequency, make sure to update the Fref and R_DIV boxes under the System tab in FracNWizard so that Fpfd
is still 50MHz. For example, if a 250MHz clock is used, Fref should be changed to 250MHz and R_DIV to 5. Ref BST
and FILT under the System tab in FracNWizard might need to be changed if the reference frequency and/or power is
different than what is recommended in the table above. More information can be found in the LTC6947 data sheet.
dc1846af
5
DEMO MANUAL DC1846A
PARTS LIST
ITEM
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
QTY
0
6
0
1
3
3
2
9
1
2
4
1
0
4
1
10
1
4
0
4
1
0
2
1
0
2
5
1
1
4
4
3
0
0
5
1
1
1
0
2
1
1
1
REFERENCE
CI1_A, C3_F2, C3_F3, CP_A, C14
CI1_P, C5, C12, C13, C18, C31
CI2_P, CI2_A
CP_P
C1, C19, C33
C2, C21, C35
C3, C16
C4, C6, C11, C30, C36, C39, C41, C43, C44
C7
C8, C15
C17, C23, C34, C45
C2_F1
C25, C28
C26, C29, C37, C38
D1
E3, E6, E11-E18
JP1
J2, J5, J6, J7
J3, J4
J9, J10, J11, J12
J13
L1
L2, L3
L1_F1
L1_F2, L1_F3
R1_F1, RZ_P
R1, R2, R11, R20, R26
R4
R5
R7, R8, R18, R19
R9, R14, R16, R2_F2
R12, R21, R22
R13, R15, R2_F3, RZ_A, R31
R23, R24
R25, R27, R28, R29, R30
U1
U2
U3
U4
U5, U10
U8
U11
SHUNT ON JP1 (2&3)
PART DESCRIPTION
CAP, 0603
CAP, 0603 1.0µF 10% 10V X7R
CAP, 1206
CAP, 0603 47nF 10% 50V X7R
CAP, 7361 47µF 10% 35V, 7361
CAP, 0805 0.1µF 10% 50V X7R
CAP, 7343 330µF 10% 10V TANT
CAP, 0402 0.1µF 10% 10V X7R
CAP, 7343 47µF 10% 20V TANT
CAP, 0402 1µF 10% 16V X5R
CAP, 0402 0.01µF 10% 16V X7R
CAP, 0603 33nF 10% 50V X7R
CAP, 0402
CAP, 0402 100pF 10% 16V NPO
LED, RED
TURRET
HEADER, 3-PIN 2mm
CONN, SMA 50Ω EDGE-LAUNCH
CONN, SMA 50Ω Straight
JACK, BANANA
HEADER, 7 DUAL PIN, 2mm
IND, 0402
IND, 0402 68nH 5%
RES, 0805, 0Ω JUMPER
IND, 0805
RES, 0603 21Ω 1% 1/10W
RES, 0402 4.99kΩ 1% 1/16W
RES, 0402 330Ω 1% 1/16W
RES, 0402 51.1Ω 1% 1/10W
RES, 0402 200kΩ 1% 1/16W
RES, 0603 0Ω JUMPER
RES, 0402 100Ω 5% 1/16W
RES, 0603
RES, 0402
RES, 0402 0Ω JUMPER
IC, QFN28IUFD-4X5
IC, LOW NOISE AMP, SO8
IC, VCO
IC, CRYSTAL OSCILLATOR
IC, DUAL BUFFER, SC70
I.C., Serial EEPROM, TSSOP8
IC, DUAL TRANSCEIVER, SOT363
SHUNT, 2mm CTRS
MANUFACTURER/PART NUMBER
OPT
TAIYO YUDEN, LMK107B7105KA-T
OPT
AVX 06035C473KAT2A
AVX TAJV476K035RNJ
AVX 08055C104KAT2A
AVX TPME337K010R0035
TAIYO YUDEN, LMK105B7104KV-F
AVX TAJD476K020RNJ
TDK C1005X5R1C105K
AVX 0402YC103KAT2A
AVX 06035C333KAT2A
OPT
AVX 0402YA101KAT2A
PANASONIC LN1251CTR
MILL-MAX 2501-2-00-80-00-00-07-0
SAMTEC TMM-103-02-L-S
E.F. JOHNSON, 142-0701-851
OPT
KEYSTONE 575-4
MOLEX 87831-1420
OPT
COILCRAFT 0402HPH-68NXJLW
VISHAY CRCW08050000Z0EA
OPT
VISHAY CRCW060321R0FKED
VISHAY CRCW04024K99FKED
NIC NRC04F3300TRF
VISHAY CRCW040251R1FKED
VISHAY CRCW0402200KFKED
VISHAY CRCW06030000Z0EA
VISHAY CRCW0402101RJKED
OPT
OPT
VISHAY CRCW04020000Z0EA
LINEAR TECH. LTC6947IUFD
LINEAR TECH. LT1678IS8#PBF
CRYSTEK, CVCO55CC-2328-2536
OPT
FAIRCHILD SEMI NC7WZ17P6X
MICROCHIP, 24LC025-I /ST
NXP 74LVC1T45GW
SAMTEC 2SN-BK-G
dc1846af
6
D
C
B
A
JP1
U3
MUTE
C14
OPT
0603
1
RED
1
2
1. ALL RESISTORS ARE IN OHMS, 0402
2. ALL CAPACITORS ARE IN MICROFARADS, 0402.
8
7
6
5
4
3
2
1
3.3V
2328 - 2536 MHz
VCO
C30
0.1uF
3.3V R29
0
2
C8
1uF
R5
51.1
D1
LN1251CTR
C5
1uF
0603
C11
0.1uF
3.3V
R4
330
C3
330uF
10V
7343
CVCO55CC-2328-2536
GND
3.3V
+
3.3V
NOTE: UNLESS OTHERWISE SPECIFIED
-A
*
E6
J2
J10
J9
J3
E3
CS
SCLK
SDI
SDO
ASSY
STATUS
REF+
GND
3.3V
CP
OPT
CP
C15
1uF
C4
0.1uF
29
R28
0
RF-
R31
OPT
0603
C17
0.01uF
0805
L1_F1
0
QFN28UFD-4X5
C37
100pF
J7
3
3.3V
0603
C2_F1
33nF
L2
68nH
0402HPH-68NXJL
V+D
LDO
SDO
SDI
SCLK
CS
STAT
REF+
GND
2
MUTE
9
GNDA
10
RF3
11
28
REF-
27
V+REF
26
CP
25
V+CP
23
V+VCO
24
RF+
12
22
15
16
17
18
19
20
21
J6
RF+
L3
3.3V
68nH
0402HPH-68NXJL
C38
100pF
5V
C23
0.01uF
0603
4
C45
0.01uF
C28
OPT
C26
100pF
9
10
11
U3
V+VCO
GND
RFOUT
GND
GND
V+
GND
GND
VTUNE
GND
R14
5
6
7
8
5
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
35V
0805
C2
0.1uF
C3_F2
OPT
0603
3
2
1
OPT
GND
EN
VTUNE
U4
2
REV
7
+
C35
0.1uF
+
RFOUT
4
C16
330uF
10V
7343
+
E14
E13
J5
E18
E17
E16
C33 E15
47uF
35V
7361
C19
47uF
35V
7361
J4
E12
J12
J11
E11
MICHEL A.
DATE
01-28-14
EXT VCO IN
EN
GND
GND
V+VCXO
GND
V+VCO
CPGAIN
OPT
CPGAIN
GND
5V
V+OA
APPROVED
8
6
SCALE = NONE
DATE:
N/A
SIZE
LTC6947IUFD
7
8
SHEET 1
DEMO CIRCUIT 1846A
01/28/2014, 12:25 PM
IC NO.
2
OF 2
REV.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
R24
OPT
35V 0805
6
R23
VCC
OPT
5
NC
C13
1uF
0603
V+VCXO
5V
V+VCO
DESCRIPTION
PRODUCTION
REVISION HISTORY
TECHNOLOGY
KIM T.
MICHEL A. TITLE: SCHEMATIC
ULTRALOW NOISE AND SPURIOUS FRACTIONAL-N SYNTHESIZER
C3_F3
OPT
0603
R2_F3
OPT
0603
R2_F2
0
0603
C1
47uF
35V
7361
L1_F3
OPT
0805
0603
+
ECO
__
L1_F2
OPT
0805
0
R13 OPT
V+OA
6
APPROVALS
4
3
2
1
0603
+INB
-INB
OUTB
*
CI2_A
OPT 1206
RZ_P
21
0603
35V 0805
B
CI1_A
OPT 0603
C21 0.1uF
12
A
CUSTOMER NOTICE
L1
OPT
C25
OPT
0603
CI2_P
OPT 1206
V-
+INA
-INA
OUTA
U2
LT1678IS8
CP_A
OPT 0603
4
3
2
1
C12
1uF
0603
RZ_A OPT
R1
4.99K
5
CI1_P
1uF 0603
5V
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
APP ENG.
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
C34
0.01uF
R30
0
C29
100pF 3.3V
47uF
C7
20V 7343
0.1uF
C6
R2
4.99K
CP_P
47nF
0603
U1
LTC6947IUFD
1uF
0603
C31
VCO-
VCO+
GNDB
GNDC
GNDD
GNDE
GNDF
GNDG
R15
OPT
0603
R16 0
3.3V
R27
0
C18
1uF
0603
R25
0
0603
R1_F1
21
4
14
GNDH
V+RF
13
BB
14
13
GND
GND
8
GND
15
VCC
GND
7
GND
16
GND
GND
6
+
5
1
D
C
B
A
DEMO MANUAL DC1846A
SCHEMATIC DIAGRAM
dc1846af
7
1
2
3
A
1
V+ 2
5V
6
CS 4
SCK/SCL 7
MOSI/SDA 5
MISO
10
EEVCC 9
EESDA 11
EESCL 12
EEGND 14
AUX
J13
HD2X7-079-MOLEX
GND
GND
GND
13
8
3
4
WP
R20
4.99K
6
5
7
3
2
1
R26
4.99K
SCL
SDA
WP
A2
A1
A0
U8
24LC025-I /ST
R9
0
0603
C43
0.1uF
3.3V
B
C
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
3
2
1
VCC
GND
DIR
VCC(B)
4
5
6
3.3V
E
SDO
SDI
SCLK
CS
DATE:
N/A
SIZE
LTC6947IUFD
D
SHEET 2
E
DEMO CIRCUIT 1846A
01/28/2014, 12:25 PM
IC NO.
OF 2
2
REV.
ULTRALOW NOISE AND SPURIOUS FRACTIONAL-N SYNTHESIZER
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
R18
200K
C39
0.1uF
C44
0.1uF
R12
100
0.1uF
R22 100
R21
100
C41
3.3V
3.3V
TECHNOLOGY
VCC(A)
U11
74LVC1T45GW
GND
5
4
3
2
6
1
U10
NC7WZ17P6X
5
2
VCC
4
3
GND
6
1
U5
NC7WZ17P6X
D
TITLE: SCHEMATIC
R8
200K
MICHEL A.
KIM T.
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
APP ENG.
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
CUSTOMER NOTICE
C36
0.1uF
R7
200K
R19
200K
DC590B SPI INTERFACE
C
NOTE: EEPROM FOR BOARD IDENTIFICATION
EEGND
R11
4.99K
V+DIG CS SCLK SDI SDO
ARRAY
B
EEPROM
8
VCC
GND
8
4
A
1
2
3
4
DEMO MANUAL DC1846A
SCHEMATIC DIAGRAM
Note: The buffers shown on sheet 2 of 2 of the schematic are used to protect the LTC6947 when connected to the DC590 before the LTC6947 is powered
up. There is no need for such circuitry if the SPI bus is not powered before powering up the LTC6947. The EEPROM is for identification and is not needed
to program the LTC6947.
dc1846af
DEMO MANUAL DC1846A
LAYOUT TOP LAYER
dc1846af
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 representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
9
DEMO MANUAL DC1846A
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
dc1846af
10 Linear Technology Corporation
LT 0514 • PRINTED IN USA
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507 ● www.linear.com
 LINEAR TECHNOLOGY CORPORATION 2014
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