Maxim Power Supply MAX1402 User Manual

19-1440; Rev 2; 5/07  
MAX1402 Evaluation Kit/Evaluation System  
General Description  
Features  
The MAX1402 evaluation system (EV system) is a com-  
plete, multichannel data-acquisition system consisting of  
a MAX1402 evaluation kit (EV kit), Maxim 68HC16 micro-  
controller (µC) module, and USBT0232. The MAX1402 is  
a low-power, multichannel, serial-output analog to digital  
Easy to Configure  
Collects Up to 8192 Samples at Full Speed  
Complete Evaluation System  
Proven PCB Layout  
®
converter (ADC). Windows 98/2000/XP-compatible soft-  
Fully Assembled and Tested  
ware provides a handy user interface to exercise the  
MAX1402’s features. Source code in C++ and 68HC11  
assembly language is provided for the low-level portion of  
the software.  
EV Kit Software Supports Windows 98/2000/XP  
with RS-232/COM Port  
EV Kit Software Supports Windows 2000/XP with  
Order the EV system for comprehensive evaluation of  
the MAX1402 using a personal computer. Order only  
the EV kit if the 68HC16 µC module has already been  
purchased with a previous Maxim EV system, or for  
custom use in other µC-based systems.  
USB Port  
Ordering Information  
PART  
TYPE RANGE  
0°C to +70°C  
0°C to +70°C  
INTERFACE TYPE  
User supplied  
The MAX1402 EV kit and EV system can also be used  
to evaluate the MAX1400. Simply order a free sample of  
the MAX1400CAI along with the MAX1402 EV kit.  
MAX1402EVKIT  
MAX1402EVC16  
Windows software  
Note: The MAX1402 software can only be used with the com-  
plete evaluation system (MAX1402EVC16), which includes the  
68HC16MODULE-DIP, USBTO232, and the MAX1402EVKIT.  
MAX1402 Stand-Alone EV Kit  
The MAX1402 EV kit provides a proven printed-circuit  
board (PCB) layout to facilitate evaluation of the  
MAX1402 with user-supplied software and hardware. It  
must be interfaced to appropriate timing signals for  
proper operation. Refer to the MAX1402 IC data sheet  
for timing requirements. See Table 2, Jumper Functions.  
MAX1402 EV Kit  
PART  
QTY  
DESCRIPTION  
100pF ceramic capacitors (1206)  
TDK C3216C0G2J101K  
C3–C8  
6
MAX1402 EV System  
The MAX1402 EV system operates from a user-supplied  
+8V to +12VDC power supply.  
0.1µF ceramic capacitors (1206)  
Murata GRM319R71H104K  
TDK C3216X7R1H104K  
C9, C10, C11  
3
Component Lists  
MAX1402 EV System  
C12, C13  
C15  
2
1
Not installed, capacitors  
2.2µF, 25V X7R ceramic capacitor  
TDK C3216X7R1E225K  
PART  
QTY  
DESCRIPTION  
MAX1402 EV kit  
J1  
J2  
1
1
0
6
2
2
1
2 x 20 right-angle socket  
Female SMA connector  
Not installed  
MAX1402EVKIT  
68HC16MODULE-DIP  
1
1
68HC16 µC module  
JU1–JU8  
R1–R6  
R7, R8  
R9, R10  
U1  
USB-to-COM port adapter  
board  
100Ω 5% resistors (1206)  
10Ω 5% resistors (1206)  
Not installed, resistors  
MAX1402CAI (28-pin SSOP)  
USBTO232+  
1
+Denotes lead-free and RoHS-compliant.  
MAX6025AEUR (SOT23)  
2.500V voltage reference  
(200ppm/°C max)  
U2  
1
2.4576MHz ceramic resonator  
Murata CSTCC2M45G53-R0  
Y1  
1
1
Windows is a registered trademark of Microsoft Corp.  
PCB: MAX1402 Evaluation Kit+  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,  
 
MAX1402 Evaluation Kit/Evaluation System  
switch, along the top-edge of the µC module.  
Observe the polarity marked on the board.  
underlined refers to items from the Windows  
98/2000/XP operating system.  
5) Connect the USBTO232 board to the 68HC16MODULE-  
DIP module if you have not done so already.  
Connections and Setup  
software) to download the latest version of the EV  
kit software. Save the EV kit software to a temporary  
folder and uncompress the file (if it is a .zip file).  
6) The MAX1402 EV kit software should have already  
been downloaded and installed in the USBTO232  
Quick Start.  
2) Install the MAX1402 EV kit software on your com-  
puter by running the INSTALL.EXE program. The  
program files are copied and icons are created for  
them in the Windows Start | Programs menu.  
FILE  
DESCRIPTION  
INSTALL.EXE  
UNINST.INI  
Installs the EV kit files on your computer.  
Database for uninstall program.  
3) Make sure your 68HC16MODULE-DIP module has  
the Rev. 2.0 ROM. The software will not function with  
the Rev. 1.0 ROM.  
Removes the EV kit files from your  
computer. This file is automatically copied  
to C:\WINDOWS during installation.  
UNMAXIM.EXE  
4) Carefully connect the boards by aligning the 40-pin  
header of the MAX1402 EV kit with the 40-pin con-  
nector of the 68HC16MODULE-DIP module. Gently  
press them together. The two boards should be  
flush against one another.  
7) Start the MAX1402 program by opening its icon in  
the Start | Programs menu.  
8) Turn on power supply and slide SW1 to the ON  
position on the 68HC16MODULE-DIP module.  
Press the OK button to automatically connect and  
download the KIT1402.C16 file to the module.  
5) Connect the DC power source to the µC module at  
terminal block J2, located next to the ON/OFF  
switch, along the top-edge of the µC module.  
Observe the polarity marked on the board.  
9) When the software successfully establishes com-  
munication with the EV kit board, you will see a con-  
figuration tool and some other windows. Verify that  
the CLKIN and reference voltage settings are cor-  
rect. Close or minimize this dialog box.  
6) Connect a cable from the computer’s serial port to  
the µC module. If using a 9-pin serial port, use a  
straight-through, 9-pin female-to-male cable. If the  
only available serial port uses a 25-pin connector, a  
standard 25-pin-to-9-pin adapter will be required.  
The EV kit software checks the modem status lines  
(CTS, DSR, and DCD) to confirm that the correct  
port has been selected.  
10) Apply input signals to the inputs labeled  
AIN1–AIN5, at the bottom-edge of the MAX1402 EV  
kit board. AIN6 is analog common. Observe the  
readout on the screen.  
Recommended Equipment (RS-232-to-COM  
Port/PC Connection Option)  
FILE  
DESCRIPTION  
INSTALL.EXE  
UNINST.INI  
Installs the EV kit files on your computer.  
Database for uninstall program.  
Before beginning, the following equipment is needed:  
MAX1402 EV system:  
MAX1402 EV kit  
Removes the EV kit files from your  
computer. This file is automatically copied  
to C:\WINDOWS during installation.  
UNMAXIM.EXE  
68HC16MODULE-DIP  
A DC power supply that generates +8VDC to  
7) Start the MAX1402 program by opening its icon in  
+12VDC at 30–50mA  
the Start | Programs menu.  
A user-supplied Windows 98/2000/XP computer with  
an available serial communications port, preferably a  
9-pin plug  
8) Turn the power on and slide SW1 to the ON posi-  
tion. Select the correct serial port and press the OK  
button. The program will automatically download  
KIT1402.C16 to the module.  
A serial cable to connect the computer’s serial port to  
the 68HC16MODULE-DIP  
9) When the software successfully establishes com-  
munication with the EV kit board, you will see a con-  
figuration tool and some other windows. Verify that  
the CLKIN and reference voltage settings are cor-  
rect. Close or minimize this dialog box.  
Note: In the following sections, software-related items  
are identified by bolding. Text in bold refers to items  
directly from the EV kit software. Text in bold and  
_______________________________________________________________________________________  
3
 
MAX1402 Evaluation Kit/Evaluation System  
10) Apply input signals to the inputs labeled  
AIN1–AIN5, at the bottom-edge of the MAX1402 EV  
kit board. AIN6 is analog common. Observe the  
readout on the screen.  
The MAX1400/MAX1402 automatically triggers its mea-  
surements, unless the FSYNC control bit is set. The  
evaluation kit software communicates with the  
MAX1400/MAX1402 at intervals determined by the  
Update Every combo box. To halt this automatic update,  
uncheck the Update Every checkbox or change the  
Update Every to a value between 100ms and 60000ms.  
Upgrading the 68HC16 Module  
The MAX1402 EV kit requires Rev. 2.0 of the Maxim  
68HC16 Module ROM. Check the label on device U3  
on the module; if its label says Rev. 1.0, contact the  
factory for a replacement.  
Normally, the microcontroller collects new data as soon  
as it becomes available, by using the INT pin to trigger  
an interrupt service routine. If the INT pin is not used as  
an interrupt, then the MAX1400 must not be operated in  
free-running mode. Check or uncheck the Use INT  
Interrupt checkbox to configure the evaluation kit soft-  
ware.  
To install the new ROM, use the following procedure.  
Use antistatic handling precautions. To reduce the risk  
of ESD damage, gather all required materials and per-  
form the installation at one sitting:  
1) Slide the ON/OFF switch to the OFF position.  
Configuration Tool  
The Configuration Tool controls parameters that apply  
to the entire EV kit. Like the other windows, the  
Configuration Tool can be activated from the Show  
menu of the main menu bar. The CLK control should  
match the external ceramic resonator or crystal that  
sets the master clock frequency. The VREF Reference  
Voltage control tells the software what the reference  
voltage is. This is used to convert the raw A/D output  
codes into the corresponding input voltage to speed  
user evaluation. The Data Rate control determines how  
often the MAX1402 performs a measurement. Some  
data rates provide 16-bit, noise-free resolution when  
used with the SINC3 filter (discussed below). The Filter  
Sync control can be used to inhibit the MAX1402 from  
performing its self-timed measurements. The Buffer  
Inputs checkbox enables the internal input buffers. The  
Burnout Test Currents checkbox enables two small  
(0.1µA) current sources to provide an input stimulus.  
When used with a transducer, these current sources  
can be used to verify that the transducer has not failed  
open or short circuit.  
2) Using a flat-blade screwdriver, gently pry U3, the  
REV 1.0 ROM, out of its socket.  
3) Remove the REV 2.0 ROM from its antistatic pack-  
aging.  
4) Align the REV 2.0 ROM in the U3 socket pins.  
Observe correct polarity (the notch at the top of the  
ROM). Verify that the pins are lined up with the  
socket, and gently press the ROM into place.  
Proceed to the regular Quick Start instructions.  
Detailed Description  
_________________________of Software  
The MAX1402 digitizes up to seven inputs. The various  
program functions are grouped into windows, which are  
accessible from the Show menu on the main menu bar.  
Main Display  
The main display shows the calculated input voltage  
and raw A/D output code for each active channel.  
Although there are nine input channels, only certain  
configurations are allowed.  
At the bottom of the window, there are input voltage  
range selection buttons. These buttons configure all  
input channels for the same input voltage range.  
Although the MAX1400/MAX1402 can be operated with  
three different input ranges at the same time, the evalu-  
ation kit software only supports a single range for all  
channels.  
Select any single channel or one of the scanning  
sequences from the Inputs menu. AIN 1-6 designates  
an analog input between the AIN1 pin and the AIN6 pin.  
CALOFF designates the signal between the CALOFF+  
and CALOFF- pins. CALGAIN designates the signal  
between the CALGAIN+ and CALGAIN- pins.  
The EV kit software assumes that CALOFF+ and  
CALOFF- are grounded so that CALOFF measures zero  
volts. Similarly, the software assumes that CALGAIN+ is  
connected to REFIN+ and CALGAIN- is connected to  
REFIN- so that CALGAIN measures the reference volt-  
age. These two points calibrate the code-to-voltage  
translation function performed in the software.  
The digital filter on the MAX1402 can be configured for  
SINC3 or SINC1 operation, which affects the filter cutoff  
frequency. (SINC' means SIN(X) ÷ X, and SINC3 means  
(SIN(X) ÷ X)3.) The SINC3 filter is required for 16-bit accu-  
racy. The SINC1 filter provides faster settling time with less  
accuracy. Alternatively, the raw modulator output can be  
driven out the DOUT pin; however, the EV kit software  
cannot read data from the MAX1402 in this mode.  
4
_______________________________________________________________________________________  
 
MAX1402 Evaluation Kit/Evaluation System  
or unchecking its box. (The START bit and the zero bits  
in the special function register (SFR) cannot be modi-  
fied). The Read All Registers button causes the soft-  
ware to read all of the MAX1400/MAX1402’s registers.  
(Not functional when the MDOUT or FULLPD bit is set.)  
Refer to Table 4, Guide to Register Bit Functions.  
Calibration Tool  
The MAX1402 EV kit software can average the mea-  
surements from the calibration channels and use the  
measured values to correct the voltage displays. The  
calibration algorithm assumes that the CALOFF inputs  
are externally connected together, and that the  
CALGAIN inputs are externally connected to the refer-  
ence voltage (VREF). View the calibration tool by  
selecting it from the Show menu.  
Communications Register (COMMS)  
Setting the FSYNC control bit inhibits the MAX1400/  
MAX1402 from performing its self-timed measurements.  
If FSYNC = 1 when it is time to perform a measurement,  
the MAX1400/MAX1402 simply skips that measure-  
ment. Thus, power line frequency rejection is not affect-  
ed by the FSYNC bit.  
The software automatically disables calibration if either  
of the calibration channels reports a code of 0 or  
262143. This is to prevent erroneous calibration when  
using a transfer function that does not include both 0V  
and VREF.  
Setting the STDBY bit places the part in low-power  
standby mode. The serial interface and the CLK oscilla-  
tor continue to operate. The part can be restored to  
normal operation by clearing the STDBY bit.  
When Use CALOFF and CALGAIN for Calibration is  
checked, the software averages the raw A/D codes for  
the CALOFF and CALGAIN channels. The average is  
calculated as a weighted sum of the new data and the  
old average value. The Slower/Faster slide bar controls  
the weight of the new data vs. the weight of the old  
average.  
Special Function Register (SFR)  
Setting the MDOUT bit causes the raw modulator output  
to be driven out the DOUT pin; however, the EV kit soft-  
ware cannot read data from the MAX1402 in this mode.  
The EV kit software assumes that all three transfer func-  
tion registers are set to the same value.  
Setting the FULLPD bit in the SFR register places the  
part in full power-down mode. The master oscillator  
does not run. To restore normal operation, click on the  
Reset menu item in the main display. This causes the  
68HC16 software to pulse the MAX1402 RESET pin.  
This calibration affects only the displayed voltage, not  
the raw code numbers. The average CALOFF and  
CALGAIN code values are used as the endpoints of a  
linear interpolation, with CALOFF measuring zero volts  
and CALGAIN measuring VREF.  
Transfer Function Registers (TF1, TF2, TF3)  
The three Transfer Function registers (TF1, TF2, TF3)  
control how input voltage is mapped to code values. The  
transfer function registers control a programmable-gain  
amplifier (PGA) and an offset correction DAC.  
The linear interpolation formula is as follows:  
VREF (CodeCALOFFcode)  
Voltage =  
(CALGAINcodeCALOFFcode) PGAgain  
If U/B = 1, the transfer function maps unipolar voltages  
between 0V and VREF. If U/B = 0, then the transfer  
function maps bipolar voltages between -VREF and  
+VREF. Next, the PGA increases the code-per-volt pro-  
cessing gain, reducing the full-scale voltage range by a  
factor of 1, 2, 4, 8, 16, 32, 64, or 128. Finally, the offset  
correction DAC offsets the voltage range by up to 7/6  
of the full-scale voltage range.  
Sampling Tool  
To sample data at full speed, select Sample from the  
main display menu, make your selections, and click on  
the Begin Sampling button. Sampling rate is controlled  
by the Configuration tool. Sample size is restricted to a  
power of two. Sample Size controls the number of sam-  
ples collected on each selected channel. After the  
samples have been collected, the data is automatically  
uploaded to the host and is graphed. Once displayed,  
the data may be saved to a file.  
Input pins AIN1 and AIN2 are controlled by TF1. Input  
pins AIN3 and AIN4 are controlled by TF2. Input pin  
AIN5 is controlled by TF3. Input pin AIN6 is the analog  
common.  
While the Sampling tool is open, the other windows are  
locked out. Close the Sampling tool by clicking the  
Close icon in the upper corner.  
When SCAN = 1, the CALOFF and CALGAIN channels  
are controlled by TF3. When SCAN = 0, the CALOFF  
and CALGAIN channels are controlled by one of the  
transfer function registers, as selected by the A1 and  
A0 bits.  
Register Display Tool  
This tool displays all of the internal registers of the  
MAX1400/MAX1402. Modify any bit value by checking  
_______________________________________________________________________________________  
5
 
MAX1402 Evaluation Kit/Evaluation System  
For simplicity, the EV kit software assumes that all three  
transfer functions are configured alike.  
MAX1402, except that the function of pins 5, 6, 7, and 8  
is changed. Instead of the OUT1/OUT2 outputs and  
DS0/DS1 inputs, these pins are used to provide access  
to the analog signal between the multiplexer and the  
A/D converter. Tables 2 and 3 list the jumper functions  
and default settings. Refer to the MAX1400 data sheet  
for detailed information.  
Detailed Description  
________________________of Hardware  
U1, the MAX1402, is a multichannel, high-resolution  
A/D converter (refer to the MAX1402 data sheet). U2,  
the MAX6025, is a 2.5V reference (refer to the  
MAX6025 data sheet). Y1 contains a ceramic resonator  
and its load capacitors. R1–R6 together with C3–C8  
form anti-aliasing input filters. R8 and C11 filter the digi-  
tal power supply. The analog supply comes through fil-  
ter R7/C10.  
Measuring Supply Current  
Supply current can be estimated by measuring the volt-  
age across a series resistor. On the EV kit board, the  
MAX1402 draws all of its analog and digital power  
through R8, which is 10Ω. In addition, all analog supply  
current flows through R7, which is also 10Ω.  
Input Filtering  
The EV kit has an RC filter on each input with a time  
constant of approximately 0.01µs = 10ns (R = 100Ω,  
C = 100pF). When scanning between channels, the RC  
filter’s settling time may increase the acquisition time  
required for full accuracy.  
Troubleshooting  
Problem: unacceptable amounts of noise in the signal.  
Collect a sample of 1024 measurements at a 60Hz data  
rate. Observe whether the problem is caused by 60Hz  
noise.  
Any AC-powered equipment connected to the analog  
signal ground can inject noise. Try replacing AC-pow-  
ered DVMs with battery-powered DVMs.  
Evaluating the MAX1400  
The MAX1400 can be evaluated by shorting across  
jumpers JU6 and JU7. The MAX1400 is exactly like the  
6
_______________________________________________________________________________________  
 
MAX1402 Evaluation Kit/Evaluation System  
Table 2. Jumper Functions  
JUMPER  
JU1  
STATE  
Closed*  
Open  
FUNCTION  
Use CalGain inputs for gain calibration (CALGAIN+ = REFIN+)  
Use CalGain inputs as general purpose signal inputs  
Use CalGain inputs for gain calibration (CALGAIN- = REFIN-)  
Use CalGain inputs as general purpose signal inputs  
Use CalOff inputs for offset calibration (CALOFF+ = GND)  
Use CalOff inputs as general purpose signal inputs  
Use CalOff inputs for offset calibration (CALOFF- = GND)  
Use CalOff inputs as general purpose signal inputs  
Use on-board reference U2 (REFIN- = GND)  
JU1  
JU2  
Closed*  
Open  
JU2  
JU3  
Closed*  
Open  
JU3  
JU4  
Closed*  
Open  
JU4  
JU5  
Closed*  
Open  
JU5  
REFIN+ and REFIN- must be driven by an external reference  
Connects pin 5 to pin 7  
JU6  
JU6  
JU7  
JU7  
Closed  
Open  
MAX1402: pin 5 = digital input DS1, pin 7 = current source  
MAX1400: normal operation  
Disconnects pin 5 from pin 7  
MAX1402: pin 5 = digital input DS1, pin 7 = current source  
MAX1400: insert filter between mux and A/D  
Connects pin 6 to pin 8  
MAX1402: pin 6 = digital input DS0, pin 8 = current source  
MAX1400: normal operation  
Closed  
Open  
Disconnects pin 6 from pin 8  
MAX1402: pin 6 = digital input DS0, pin 8 = current source  
MAX1400: insert filter between mux and A/D  
JU8  
JU8  
Closed*  
Open  
Use on-board reference U2 (REFIN+ = 2.5V)  
REFIN+ and REFIN- must be driven by an external reference  
*Default trace on top layer of PCB.  
Table 3. Default Jumper Settings  
JUMPER  
JU1  
STATE  
Closed*  
Closed*  
Closed*  
Closed*  
Closed*  
FUNCTION  
Use CalGain inputs for gain calibration (CALGAIN+ = REFIN+)  
Use CalGain inputs for gain calibration (CALGAIN- = REFIN-)  
Use CalOff inputs for offset calibration (CALOFF+ = GND)  
Use CalOff inputs for offset calibration (CALOFF- = GND)  
Use on-board reference U2 (REFIN- = GND)  
JU2  
JU3  
JU4  
JU5  
Disconnects pin 5 from pin 7  
JU6  
Open  
MAX1402: pin 5 = digital input DS1, pin 7 = current source  
MAX1400: insert filter between mux and A/D  
Disconnects pin 6 from pin 8  
JU7  
JU8  
Open  
MAX1402: pin 6 = digital input DS0, pin 8 = current source  
MAX1400: insert filter between mux and A/D  
Closed*  
Use on-board reference U2 (REFIN+ = 2.5V)  
*Default trace on top layer of PCB.  
_______________________________________________________________________________________  
7
 
MAX1402 Evaluation Kit/Evaluation System  
Table 4. Guide to Register Bit Functions  
REGISTER  
BIT NAME  
0/DRDY  
RS2–RS0  
R/W  
DESCRIPTION  
Start bit is zero; DIN pin must be 1 when idle  
COMMS  
Register select for subsequent operation  
Selects subsequent read or write operation  
Causes software reset when set to 1  
Activates standby power-down mode when set to 1  
Inhibits the A/D converter when set to 1  
Selects the active channel  
RESET  
STDBY  
FSYNC  
A1  
GS1  
A0  
Selects the active channel  
MF1  
Selects the data output rate  
MF0  
Selects the data output rate  
CLK  
Selects the CLKIN frequency  
FS1  
Select the data output rate  
FS0  
Select the data output rate  
1
3
FAST  
SCAN  
M1  
Selects SINC filter instead of SINC  
GS2  
Enables the scanning sequences  
Enables the CalGain channel  
Enables the CalOff channel  
Enables the input buffers  
M0  
BUFF  
DIFF  
Selects differential input pairs  
BOUT  
IOUT  
X2CLK  
MDOUT  
FULLPD  
Enables the transducer burn-out test currents  
Enables the OUT1 and OUT2 current sources (MAX1402 only)  
Selects the CLKIN frequency  
SFR  
TF1, 2, 3  
DATA  
Changes the DOUT and INT pins to provide raw modulator output  
Activates full power-down mode. Use hardware reset to restore normal operation.  
All other bits in SFR must be zero  
G2–G0  
U/B  
Select the PGA Gain  
Selects unipolar or bipolar coding  
D3–D0  
D17–D0  
DS1  
Select the offset correction DAC code; D3 = sign, D2–D0 = magnitude  
Raw code value  
Value of the DS1 input pin (MAX1402 only)  
Value of the DS0 input pin (MAX1402 only)  
Channel identification tag  
DS0  
CID2–CID0  
8
_______________________________________________________________________________________  
 
MAX1402 Evaluation Kit/Evaluation System  
Figure 1. MAX1402 EV Kit Schematic  
_______________________________________________________________________________________  
9
 
MAX1402 Evaluation Kit/Evaluation System  
Figure 2. MAX1402 EV Kit Component Placement Guide—Component Side  
10 ______________________________________________________________________________________  
 
MAX1402 Evaluation Kit/Evaluation System  
Figure 3. MAX1402 EV Kit PCB Layout—Component Side  
______________________________________________________________________________________ 11  
 
MAX1402 Evaluation Kit/Evaluation System  
Figure 4. MAX1402 EV Kit PCB Layout—Solder Side  
Revision History  
Pages changed at Rev 2: Title change—all pages, 1,  
2, 3, 4, 10, 11  
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are  
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.  
12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600  
© 2007 Maxim Integrated Products  
is a registered trademark of Maxim Integrated Products, Inc.  
 

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