Linear Technology LTC5510 Quick setup guide

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dc1984af
DEMO MANUAL DC1984A
Description
LTC5510
1MHz to 6GHz Wideband
High Linearity Active Mixer
Demonstration circuit 1984A showcases the LT C
®
5510.
wideband high linearity active mixer for VHF/UHF upmixer
applications, where a 70MHz input signal is upconverted
to the 100MHz to 1GHz output range. Its input port is
optimized for 30MHz to 2.6GHz, and its output port is
optimized for 10MHz to 1.3GHz. The LO input can be
either high side or low side.
Another demonstration circuit, the DC1983A, utilizing a
multilayer chip hybrid balun, is designed for evaluating
the LTC5510 for wideband up/downmixer applications
with 30MHz to 3GHz input and 1.2GHz to 2.1GHz output.
DEMO BOARD INPUT RANGE LO RANGE OUTPUT RANGE
DC1983A 30MHz to 3GHz 5MHz to 6GHz 1.2GHz to 2.1GHz
DC1984A 30MHz to 2.6GHz 5MHz to 6GHz 10MHz to 1.3GHz 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.
performance summary
The LTC5510 is a high linearity active mixer optimized
for applications requiring very wide input bandwidth,
low distortion and low LO leakage. The IC includes a
double-balanced active mixer with an input buffer and a
high speed LO amplifier. The mixer can be used for both
up- and down-conversion and requires only 0dBm of LO
power to achieve excellent distortion and noise perfor-
mance. The LTC5510 is optimized for 5V, but can also
be used with a 3.3V supply with reduced performance.
The shutdown function allows the part to be disabled for
further power saving.
Design files for this circuit board are available at
http://www.linear.com/demo/DC1984A
PARAMETER CONDITIONS VALUE UNITS
Input Frequency Range 30 to 2600 MHz
Output Frequency Range 10 to 1300 MHz
LO Input Frequency Range 5 to 6000 MHz
LO Input Power Range –6 to 6 dBm
Supply Voltage Range 5V Supply, R1 = Open (Default Configuration)
3.3V Supply, R1 = 2kΩ
4.5 to 5.3
3.1 to 3.5
V
V
Supply Current 5V Supply, R1 = Open (Default Configuration)
3.3V Supply, R1 = 2kΩ
98
90
mA
mA
Total Supply Current During Shutdown EN = Low 1.3 mA
EN Input High Voltage (On) >1.8 V
EN Input Low Voltage (Off) <0.5 V
EN Input Current –0.3V to VCC + 0.3V –20 to 200 µA
Turn-On Time EN: Low to High 0.6 µs
Turn-Off Time EN: High to Low 0.6 µs
Temperature Monitor Pin (TEMP)
DC Voltage at TJ= 25°C
IIN = 10µA
IIN = 80µA
697
755
mV
mV
Temperature Monitor Pin (TEMP)
Voltage Temperature Coefficient
IIN = 10µA
IIN = 80µA
–1.80
–1.61
mV/°C
mV/°C
Specifications are at TC= 25°C, VCC = 5V, EN = High, PLO = 0dBm,
PIN = –10dBm (–10dBm/tone for two-tone tests), unless otherwise noted. (Note 1)

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DEMO MANUAL DC1984A
DetaileD Description
absolute maximum ratings
NOTE. Stresses beyond Absolute Maximum Ratings may
cause permanent damage to the device. Exposure to any
Absolute Maximum Rating condition for extended periods
may affect device reliability and lifetime.
Supply Voltage (VCC)...............................................6.0V
Enable Voltage (EN)........................ –0.3V to VCC + 0.3V
LO Input Power (1MHz to 6GHz)........................ +10dBm
IN Input Power (1MHz to 6GHz)......................... +18dBm
Temp Monitor Input Current (TEMP)......................10mA
Operating Temperature Range (TC)........ –40°C to 105°C
PARAMETER CONDITIONS VALUE UNITS
5V VHF/UHF Upmixer Application: fIN = 70MHz, fOUT = 100MHz to 1000MHz, fLO = fIN + fOUT
Conversion Gain fOUT = 456MHz 1.1 dB
Tw o -Tone Output 3rd Order Intercept (Δf = 2MHz) fOUT = 456MHz 29.0 dBm
SSB Noise Figure fOUT = 456MHz 11.3 dB
SSB Noise Floor at PIN = 5dBm fIN = 44MHz, fLO = 532MHz, fOUT = 462MHz –152 dBm/Hz
LO-IN Leakage fLO = 100MHz to 1500MHz < –62 dBm
LO-OUT Leakage fLO = 100MHz to 1500MHz < –39 dBm
IN-OUT Isolation fIN = 50MHz to 400MHz > 43 dB
IN-LO Isolation fIN = 50MHz to 400MHz > 70 dB
Input 1dB Compression fOUT = 456MHz 11.0 dBm
Note 1: Subject to change without notice. Refer to the latest LTC5510 data sheet for the most up-to-date specifications.
performance summary
Specifications are at TC= 25°C, VCC = 5V, EN = High, PLO = 0dBm,
PIN = –10dBm (–10dBm/tone for two-tone tests), unless otherwise noted. (Note 1)
Supply Voltage Ramping
Fast ramping of the supply voltage can cause a current
glitch in the internal ESD protection circuits. Depending on
the supply inductance, this could result in a supply volt-
age transient that exceeds the maximum rating. A supply
voltage ramp time of greater than 1ms is recommended.
Do not clip powered test leads directly onto the demon-
stration circuit’s VCC and EN turrets. Instead, make all
necessary connections with power supplies turned off,
then increase to operating voltage.
Supply Voltage
The LTC5510 automatically detects the supply voltage and
configures internal components for 5V or 3.3V operation.
The auto-detect circuit switches at approximately 4.1V.
To avoid undesired operation, the mixer should only be
operated in the 4.5V to 5.3V or 3.1V to 3.6V supply range.
For best overall temperature performance, the external
bias adjustment resistor, R1, should be left open for 5V
supply and set to 2kΩ for 3.3V supply. By default, dem-
onstration circuit 1984A is configured for 5V supply, and
R1 is not installed.

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DEMO MANUAL DC1984A
LO Port
Demonstration Circuit 1984A’sLO input port is broadband
matched to 50Ω from 5MHz to 6GHz, with better than 10dB
return loss. The impedance match is maintained whether
the part is enabled or disabled.
Figure 1. IN Port Return Loss
Figure 2. LO Port Return Loss
FREQUENCY (MHz)
0
RETURN LOSS (dB)
–6
–12
–18
4000300020001000
–24
–30
0
dc1984a F01
FREQUENCY (MHz)
0
RETURN LOSS (dB)
–6
–12
–18
4000300020001000 5000
–24
–30
0
dc1984a F02
ON (EN = HI)
OFF (EN = LOW)
Enable Function
The LTC5510 features Enable/Shutdown control. When
the applied Enable (EN) voltage is logic high (>1.8V), the
mixer is enabled. When the Enable (EN) voltage is logic
low (<0.5V), the mixer is shutdown reducing current
consumption to approximately 1.3mA. The Enable voltage
should never fall below –0.3V, or exceed the power supply
voltage by more than 0.3V.
Temperature Monitor (TEMP)
The LTC5510’s junction temperature can be estimated by
forcing a current into the on-chip diode and measuring
the resulting voltage:
10μA forced current:
TJ=
V
D
−742.4
–1.796
80μA forced current:
TJ=
V
D
−795.6
–1.609
Where TJis the junction temperature in °C, and VDis the
TEMP pin voltage in mV.
IN Port
Demonstration Circuit 1984A’s IN port is broadband
matched to 50Ω from 30MHz to 2.6GHz.
DetaileD Description
Figure 3. OUT Port Return Loss
0 1200900600300 1500
FREQUENCY (MHz)
RETURN LOSS (dB)
–6
–12
–18
–24
–30
0
dc1984a F03
OUT Port
DemonstrationCircuit1984Autilizes a wideband transmis-
sion line type transformer at the output port. The output
port is well matched to 50Ω from 10MHz to 1.3GHz.

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DEMO MANUAL DC1984A
measurement equipment anD setup
The LTC5510 is a wideband active mixer IC with very high
linearity. Accuracy of its performance measurement is
highly dependent on equipment setup and measurement
technique. The recommended measurement setups are
presented in Figure 4, Figure 5 and Figure 6. The following
precautions should be observed:
1. Use high performance signal generators with low har-
monic output and low phase noise, such as the Rohde
& Schwarz SME06. Filters at the signal generators’
outputs may also be used to suppress higher order
harmonics.
2. A high quality RF power combiner which provides
broadband 50Ω termination on all ports and has good
port-to-port isolation should be used, such as the Mini-
Circuits ZFSC-2-372-S+.
3. Use high performance amplifiers with high IP3 and
high reverse isolation, such as the Mini-Circuits ZHL-
1042J, on the outputs of the RF signal generators to
improve source isolation to prevent the sources from
modulatingeachother and generating intermodulation
products.
4. Use attenuator pads with good VSWR on the demon-
stration circuit’s input and output ports to improve
source and load match to reduce reflections, which
may degrade measurement accuracy.
5. A high dynamic range spectrum analyzer, such as
the Rohde & Schwarz FSEM30, should be used for
linearity measurement.
NETWORK
ANALYZER
5V DC
POWER
SUPPLY
+
–
50Ω
TERMINATION
50Ω
TERMINATION
Figure 4. Proper Equipment Setup for Return Loss Measurements

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DEMO MANUAL DC1984A
6. Use narrow resolution bandwidth (RBW) and engage
video averaging on the spectrum analyzer to lower
the displayed average noise level (DANL) in order to
improve sensitivity and to increase dynamic range.
However, the trade-off is increased sweep time.
7. Spectrum analyzers can produce significant internal
distortion products if they are overdriven. Generally,
spectrum analyzersaredesigned to operate attheir best
with about –30dBm at their input filter or preselector.
Sufficientspectrum analyzer inputattenuationshould be
used to avoid saturating the instrument, but too much
attenuation reduces sensitivity and dynamic range.
8. Before taking measurements, the system performance
should be evaluated to ensure that:
a. Clean input signals can be produced. The two-tone
signals’ OIP3 should be at least 15dB better than the
DUT’s IIP3.
b. The spectrum analyzer’s internal distortion is mini-
mized.
c. The spectrum analyzer has enough dynamic range
and sensitivity. The measurement system’s IIP3
should be at least 15dB better than the DUT’s OIP3.
d. The system is accurately calibrated for power and
frequency.
measurement equipment anD setup
5V DC
POWER
SUPPLY
+
–
SPECTRUM
ANALYZER
MINI-CIRCUITS
ZFSC-2-372-S+
SIGNAL
GENERATOR
1
SIGNAL
GENERATOR
2
SIGNAL
GENERATOR
3
3dB
3dB
6dB
3dB
MINI-CIRCUITS
ZHL-1042J
MINI-CIRCUITS
ZHL-1042J
Figure 5. Proper Equipment Setup for RF Performance Measurements

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DEMO MANUAL DC1984A
Figure 6. Proper Equipment Setup for Noise Figure Measurement
5V DC
POWER
SUPPLY
+
–
SIGNAL
GENERATOR
NOISE
SOURCE
BPF 3dB
BPF3dB
BPF 6dB
NOISE
FIGURE
METER
measurement equipment anD setup
quick start proceDure
Demonstration circuit 1984A is easy to set up to evaluate
the performance of the LTC5510. Refer to Figure 4, Figure
5 and Figure 6 for proper equipment connections.
NOTE. Care should be taken to never exceed absolute
maximum input ratings. Make all connections with RF
and DC power off.
Return Loss Measurements
1. Configure the Network Analyzer for return loss mea-
surement, set appropriate frequency range, and set the
test signal to 0dBm.
2. Calibrate the Network Analyzer.
3. Connect all test equipment as shown in Figure 4 with
the DC power supply turned off.
4. Increase the DC power supply voltage to 5V, and verify
that the total current consumption is close to the figure
listed in the Performance Summary. The supply voltage
should be confirmed at the demo board VCC and GND
terminals to account for test lead ohmic losses.
5. Terminate unused demo board ports in 50Ω. Measure
return losses of the IN, LO and OUT ports.

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dc1984af
DEMO MANUAL DC1984A
quick start proceDure
RF Performance Measurements
1. Connect all test equipment as shown in Figure 5, with the
signal generators and the DC power supply turned off.
2. Increase the DC power supply voltage to 5V, and verify
that the total current consumption is close to the figure
listed in the Performance Summary. The supply voltage
should be confirmed at the demo board VCC and GND
terminals to account for test lead ohmic losses.
3. Set the LO source (signal generator 1) to provide a
0dBm CW signal at appropriate LO frequency to the
demo board LO input port.
4. Set the RF sources (signal generators 2 and 3) to
provide two –10dBm CW signals, 2MHz apart, at the
appropriate frequencies to the demo board IN port.
5. Measure theresulting output on the Spectrum Analyzer:
6. Calculate output 3rd order intercept:
OIP3 =
∆IM3
2
+P
OUT
Where ΔIM3 = POUT – PIM3. POUT is the lowest fundamental
output signal power. PIM3 is the highest 3rd order inter-
modulation product power.
7. Turn off one of the RF signal generators, and measure
conversion gain, IN-OUT isolation, LO-OUT leakage,
and input 1dB compression point.
Noise Figure Measurement
1. Configure and calibrate the noise figure meter for mixer
measurements.
2. Connect all test equipment as shown in Figure 6, with
the signal generator and the DC power supply turned
off.
3. Increase the DC power supply voltage to 5V, and verify
that the total current consumption is close to the figure
listed in the Performance Summary. The supply voltage
should be confirmed at the demo board VCC and GND
terminals to account for test lead ohmic losses.
4. Measure the single-sideband noise figure.
pcb layout
Layer 1, Top Layer Layer 2, Ground Layer

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DEMO MANUAL DC1984A
parts list
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
Required Circuit Components
1 4 C1, C2, C4, C5 CAP, 0402, X7R, 16V, 0.1µF, 10% MURATA, GRM155R71C104KA88D
2 1 C3 CAP, 0402, C0G, 50V, 0.5pF, ±0.1pF MURATA, GJM1555C1HR50BB01D
3 1 C6 CAP, 0603, X7R, 16V, 1µF, 10% MURATA, GRM188R71C105KA12D
4 4 C7, C8, C9, C10 CAP, 0402, X7R, 16V, 10nF, 10% MURATA, GRM155R71C103KA01D
5 4 E1, E2, E3, E4 TESTPOINT, TURRET, 0.094" MILL-MAX, 2501-2-00-80-00-00-07-0
6 3 J1, J2, J3 CONN, SMA, 50Ω, EDGE-LAUNCH E.F. JOHNSON, 142-0701-851
7 0 J4 CONN, OPTION
8 0 L1, L2 IND, 0603, OPTION
9 1 L3 IND, 0603, WIRE-WOUND, 220nH, 2% COILCRAFT, 0603HP-R22XGLU
10 2 L4, L5 IND, 0402, WIRE-WOUND, 15nH, 2% COILCRAFT, 0402HP-15NXGLU
11 0 R1 RES, 0402, OPTION
12 1 T1 XFMR, 1:1, 4.5-3000MHz MINI-CIRCUITS, TC1-1-13M+
13 1 T2 XFMR, 4:1, 10-1900MHz MINI-CIRCUITS, TC4-19LN+
14 1 U1 IC, LTC5510IUF#PBF, QFN 4mm × 4mm LINEAR TECHNOLOGY, LTC5510IUF#PBF
15 1 FAB, PRINTED CIRCUIT BOARD DEMO CIRCUIT 1984A
pcb layout
Layer 4, Bottom Layer
Layer 3, Power Layer

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dc1984af
DEMO MANUAL DC1984A
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 COMPONENTS ARE 0402 SIZE
3.3V
4.5V - 5.3V 3.1V - 3.6V
OPEN 2.0K
*
*
*
VCC RANGE
VCC RANGE R1
5V (DEFAULT)
REVISION HISTORY DESCRIPTION DATEAPPROVEDECO REV
SUNNY H.PRODUCTION2 7-09-13
__
REVISION HISTORY DESCRIPTION DATEAPPROVEDECO REV
SUNNY H.PRODUCTION2 7-09-13
__
REVISION HISTORY DESCRIPTION DATEAPPROVEDECO REV
SUNNY H.PRODUCTION2 7-09-13
__
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
2
Tuesday, July 09, 2013
11
WIDEBAND ACTIVE MIXER, LOW FREQUENCY OUTPUT
A.K.
SUNNY H.
N/A
LTC5510IUF
DEMO CIRCUIT 1984A
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
2
Tuesday, July 09, 2013
11
WIDEBAND ACTIVE MIXER, LOW FREQUENCY OUTPUT
A.K.
SUNNY H.
N/A
LTC5510IUF
DEMO CIRCUIT 1984A
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
2
Tuesday, July 09, 2013
11
WIDEBAND ACTIVE MIXER, LOW FREQUENCY OUTPUT
A.K.
SUNNY H.
N/A
LTC5510IUF
DEMO CIRCUIT 1984A
T2
4:1 XFMR
MINI-CIRCUITS TC4-19LN+
6
3
4
1 2
C3 0.5pF
C7
10nF
L3 220nH 0603
U1
LTC5510IUF
TEMP
1
IN+
2
IN-
3
LGND
4
EN
5
VCC1
6
VCC2
7
IADJ
8
GND 9
OUT- 10
OUT+ 11
GND 12
GND 13
LO- 14
LO+ 15
TP 16
GND 17
J2
LO
C4
0.1uF
C9 10nF
C8 10nF
L5
15nH
C5
0.1uF
L2
OPT
0603
J4
OUT-
OPT
E4
TEMP
E2 GND
R1
OPT
T1 1:1 XFMR MINI-CIRCUITS TC1-1-13M+
6
3 4 1 2
C2
0.1uF
C6
1uF 0603
J3
OUT+
E3
EN
J1
IN
L1 OPT
0603
C1 0.1uF
L4
15nH
C10 10nF
E1
VCC
4.5V - 5.3V

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dc1984af
DEMO MANUAL DC1984A
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ●FAX: [phone] ●www.linear.com
 LINEAR TECHNOLOGY CORPORATION 2013
LT 0713 • PRINTED IN USA
DEMONSTRATION BOARD IMPORTANT NOTICE
Linear Technology Corporation (LT C ) 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 LT C 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 LT C 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. LT C assumes no liability for applications assistance,
customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind.
LT C 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 LT C applica-
tion engineer.
Mailing Address:
Linear Technology
1630 McCarthy Blvd.
Milpitas, CA 95035
Copyright © 2004, Linear Technology Corporation