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19-3606; Rev 0; 2/05 MAX1320 Evaluation Kit/Evaluation System General Description The MAX1320 evaluation system (EV system) is a complete 8-channel, 14-bit, data-acquisition system (DAS). The MAX1320 EV system (MAX1320EVB16) consists of a MAX1320 evaluation kit (EV kit) and the Maxim 68HC16MOD-16WIDE microcontroller (C) module. Order the EV kit (MAX1320EVKIT) separately if the user has a parallel bus controller or if the 68HC16MOD-16WIDE C module has already been purchased. The MAX1320 EV kit can be used to evaluate the MAX1320 with an external system clock. In this mode, the 68HC16MOD-16WIDE board cannot be used and the user must supply a parallel interface. The EV kit comes with the MAX1320ECM installed. To evaluate the pin-compatible MAX1316ECM- MAX1319ECM and MAX1321ECM-MAX1327ECM, contact the factory for free samples. Proven PC-Board Layout Windows(R) 98-/2000-/XP-Compatible Evaluation Software Buffers on All Input Channels Headers to Connect EV System to Logic Analyzer Fully Assembled and Tested Features Evaluate: MAX1316-MAX1327 Ordering Information PART MAX1320EVKIT MAX1320EVB16 INTERFACE TYPE User-supplied parallel-bus controller Windows software MAX1320EVB16 Component List PART MAX1320EVKIT 68HC16MOD-16WIDE QTY 1 1 DESCRIPTION MAX1320 EV kit 68HC16 C module Note: The MAX1320 software is included with the MAX1320 EV kit but is designed for use with the complete EV system. The EV system includes both the Maxim C module and the EV kit. If the Windows software will not be used, the EV kit board can be purchased without the Maxim C module. Note: To evaluate the MAX1316ECM-MAX1319ECM or the MAX1321ECM-MAX1327ECM, request a free sample when ordering the MAX1320EVKIT or MAX1320EVB16. MAX1320EVKIT Component List DESIGNATION C1-C6, C19 C7-C18, C20-C27 C28, C29 QTY 7 DESCRIPTION 2.2F 10%, 25V X7R ceramic capacitors (1206) TDK C3216X7R1E225K 0.1F 10%, 25V X7R ceramic capacitors (0603) TDK C1608X7R1E104K 0.01F 10%, 25V X7R ceramic capacitors (0603) Murata GRM188R71E103K 4.7F 10%, 16V X7R ceramic capacitor (1206) TDK C3216X7R1C475K 1000pF 10%, 50V X7R ceramic capacitors (0603) Murata GRM188R71H102K SMA connectors Ferrite bead TDK MMZ1608B601C (0603) 2 x 9-pin header 2 x 14-pin header DESIGNATION J3, J4 JU1-JU12 JU13-JU16 JU17, JU18, JU19 R1-R8 R9-R16 R17-R24 R25-R32 U1 U2-U5 U6 None None None QTY 2 12 4 0 8 8 8 8 1 4 1 16 1 1 DESCRIPTION 2 x 20, 0.1in right-angle receptacles 2-pin headers 3-pin headers Not installed (2-pin headers) 100k 5% resistors (0603) 10 5% resistors (0603) 8.66k 1% resistors (0603) 24 5% resistors (0603) 8-channel, 14-bit ADC MAX1320ECM (48-pin TQFP) Dual-supply op amps MAX4351ESA (8-pin SO) Ultra-high-precision voltage regulator MAX6126AASA25 (8-pin SO) Shunts MAX1320 EV kit PC board MAX1320 EV kit software, CD-ROM 20 2 C30 1 C31-C38 ECLK, CONVST FB1 J1 J2 8 2 1 1 1 Windows is a registered trademark of Microsoft Corp. ________________________________________________________________ Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com. MAX1320 Evaluation Kit/Evaluation System Evaluate: MAX1316-MAX1327 MAX1320 EV Kit Files FILE INSTALL.EXE MAX1320.EXE MAX1320.C16 HELPFILE.HTM UNINST.INI MAX1320.ASM EVKIT2.ASM GPT.ASM QSPI.ASM DESCRIPTION Installs the EV kit files on your computer Application program 68HC16MOD-16WIDE software MAX1320 EV kit help file Uninstalls the EV kit software 68HC16MOD-16WIDE C source file 68HC16MOD-16WIDE C source file 68HC16MOD-16WIDE C source file 68HC16MOD-16WIDE C source file Procedure Do not turn on the power until all connections are made. 1) Set JU1 to 1-2 (selects midscale reference for bipolar operation). 2) Set JU2 to 1-2 (selects on-board external reference). 3) Remove shunt from JU3 (disables autoread feature). 4) Set JU4 to 1-2 (enables the MAX1320 internal clock). 5) Set JU5-JU12 to 1-2 (selects buffered input for channel 0 through channel 7). 6) Set JU13 to 2-3 (selects midscale reference for bipolar operation). 7) Set JU14 to 1-2 (enables the MAX1320 internal clock). 8) Set JU15 to 2-3 (selects VCC from 68HC16MOD16WIDE as DVDD) 9) Set JU16 to 2-3 (selects HVAVCC pad as positive supply for input buffers). 10) Connect the MAX1320 EV kit's two 40-pin female connectors (J3 and J4) to the 68HC16MOD-16WIDE module's two 40-pin male connectors (P1 and P2). 11) Connect the 9-pin serial cable from the computer's serial port to the 68HC16MOD-16WIDE module's DB9 connector (J3). Use a USB-to-serial adapter if your computer does not have a serial port. 12) Install the MAX1320 evaluation software on your computer by running the INSTALL.EXE program. The files can be obtained from the Maxim website or the enclosed CD. The program files are copied and icons are created for them in the Windows Start menu. 13) Connect the +5V power supply between the MAX1320 EV kit's AVDD and AGND pads. 14) Connect the 5.5V power supply to the MAX1320 EV kit (+5.5V to HVAVCC pad, ground to AGND pad, and -5.5V to HVAVEE pad). 15) Connect the 7V (up to 20V supported) power supply to the 68HC16MOD-16WIDE's power connector (J2). 16) Turn on all three power supplies. 17) Turn on the 68HC16MOD-16WIDE by setting SW1 to the ON position. 18) Measure the voltage at REF using the DVM and verify that the voltage is 2.500V 0.025V. 19) Start the MAX1320 EV kit software by double-clicking its icon in the Start menu. Component Suppliers SUPPLIER Murata TDK PHONE 770-436-1300 847-803-6100 WEBSITE www.murata.com www.component.tdk.com Note: Indicate you are using the MAX1320 when contacting these component suppliers. Quick Start Recommended Equipment * Maxim MAX1320EVB16 EV system (MAX1320EVKIT and 68HC16MOD-16WIDE C module) * 3 power supplies: 1) 7V or higher (up to 20V) at 300mA for the 68HC16MOD-16WIDE 2) 5V at 250mA for AVDD 3) 5.5V at 250mA for HVAVCC and HVAVEE (or 10V at 250mA to evaluate the MAX1324ECM- MAX1327ECM) * Waveform generator (optional) * Digital voltmeter (DVM) * User-supplied 9-pin serial extension cable * User-supplied Windows 98/2000/XP PC with an available RS-232 serial port * Logic analyzer (optional) 2 _______________________________________________________________________________________ MAX1320 Evaluation Kit/Evaluation System Detailed Description of Software To start the software, double-click the MAX1320 EV kit icon that is created during installation. The Serial Form, shown in Figure 1, appears and the user must click Ok to upload the firmware to the 68HC16MOD-16WIDE and begin the program. When the firmware has been uploaded and the C on the 68HC16MOD-16WIDE has booted, the MAX1320 evaluation software (shown in Figure 2) appears. The Part pulldown menu allows the user to select any part in the MAX1316ECM-MAX1327ECM family. By default, the MAX1320ECM is selected. The Sampling pulldown menu allows the user to select between three sampling modes: single sample, continuous sample, and block sample. Note that in block-sample mode, the user can select the sampling rate (per channel) and this rate changes depending on how many channels are selected. The check boxes in the Power Saving Modes box allow the user to enable the different power-saving features of the MAX1320. The two check boxes are labeled SHDN pin and ALLON pin and represent the state of the MAX1320's pin with the same designation. Checking and unchecking these boxes sets the corresponding IC pin high and low, respectively. The Channel Select box contains a check box for each input channel of the IC. Checking the box allows the software to sample the channel. The Input Values box displays the raw data and corresponding input voltage of all selected channels after sampling. The References box allows the user to specify the exact references being used. The values for the reference voltage and the midscale voltage should be entered here. These values are used in the transfer function for converting the raw data into a corresponding input voltage. The Sample Options box is used to control sampling in any of the three sampling modes. In single-sample mode, the Sample button is used to sample all selected channels once. In continuous-sample mode, the Start and Stop buttons are used to sample all selected channels and a sampling interval (between 200ms and 10,000ms) can be entered in the Sampling Interval text field. In block-sample mode, the Sample button is used to bring up the Sampling Tool (see Figure 3) and the Sampling Frequency scrollbar is used to select a sampling frequency per channel. Note that the sampling frequency will be adjusted as channels are selected/unselected and will be accurate typically to within 0.5ms. To determine the exact sampling frequency per channel in block-sample mode, observe consecutive falling edges on the CONVST pin (J1-7) when sampling. To capture data for precision FFTs, use the MAX1320 EV kit with an external clock and a logic analyzer (instead of the 68HC16MOD16WIDE) to read the parallel bus. This improves the accuracy of the ADC clocking system. When using the MAX1320 evaluation software, the Serial Form and/or Graph Form can be displayed by clicking on the appropriate command in the Options menu. The Serial Form displays all communication between the MAX1320 evaluation software and the 68HC16MOD-16WIDE. The Graph Form (see Figure 4) displays a graph of sampled results when the software is in continuous-sample mode. Note that when viewing graphical information (using either the Graph Form in continuous-sample mode or done automatically in block-sample mode), the raw codes collected from the MAX1320 are converted from two's complement (or offset binary in unipolar devices) to signed decimal. The raw data can be saved to a text file using the Save... menu item in the graph window. Evaluate: MAX1316-MAX1327 Detailed Description of Hardware MAX1320EVB16 EV System The MAX1320EVB16 is a complete 8-channel, 14-bit, DAS consisting of a MAX1320 EV kit and the Maxim 68HC16MOD-16WIDE C module. 68HC16MOD-16WIDE C Module The 68HC16MOD-16WIDE provides a 16-bit parallel bus to demonstrate various Maxim devices. Maxim reserves the right to change the implementation of this module at any time with no advance notice. MAX1320 EV Kit The MAX1320 EV kit board provides a proven layout for evaluating the MAX1320 8-channel, 14-bit ADC and can be obtained separately without the 68HC16MOD-16WIDE C module. The MAX1320 EV kit includes an on-board 2.5V reference (MAX6126) and buffers (MAX4351) for all eight input channels. The MAX1320ECM (U1) is powered from two sources. The user must supply +5V between AVDD and AGND, and +3V to +5V between DVDD and DGND. DVDD can also be supplied from the 68HC16MOD-16WIDE using JU15. The input buffers require a +5.5V positive supply (HVAVCC) and a -5.5V negative supply (HVAVEE). The positive supply for the input buffers must be applied on the HVAVCC pad or connected to AVDD using JU16. 3 _______________________________________________________________________________________ MAX1320 Evaluation Kit/Evaluation System Evaluate: MAX1316-MAX1327 Figure 1. MAX1320 EV Kit Serial Form Figure 2. MAX1320 Evaluation Software 4 _______________________________________________________________________________________ MAX1320 Evaluation Kit/Evaluation System Evaluate: MAX1316-MAX1327 Figure 3. MAX1320 EV Kit Sampling Tool Figure 4. MAX1320 EV Kit Graph Form _______________________________________________________________________________________ 5 MAX1320 Evaluation Kit/Evaluation System Evaluate: MAX1316-MAX1327 The negative supply must be applied on the HVAVEE pad. Connect the ground for these supplies to the AGND pad. If the IC has less than eight input channels (i.e., four channels or two channels), the unused input pins can be connected to AGND or left floating. Note that if the inputs are buffered and exceed 5V (i.e., when using the MAX1324-MAX1327 that support inputs up to 10V), replace the MAX4351 buffers (U2-U5) with buffers capable of a 10V voltage range. Jumpers on the EV kit allow evaluation of all the parts in the MAX1316-MAX1327 family. When changing between parts in the family, JU1 and JU13 must be set according to whether the IC accepts bipolar or unipolar inputs. The MAX1320 on the EV kit uses the on-board MAX6126 2.5V reference instead of its internal reference when shipped. To use the MAX1320's internal 2.5V reference, remove the shunt from JU2. The user can also use an external reference by first removing the shunt from JU2 and applying the reference voltage to the REF pad. When using a non-default reference value, the user must update the value in the EV kit software's References box. A logic analyzer can be used instead of the 68HC16MOD-16WIDE to evaluate the MAX1320 EV kit. For this configuration, disconnect the EV kit from the 68HC16MOD-16WIDE and connect the logic analyzer to J1 and J2. These headers allow access to the MAX1320 control (J1) and data (J2) pins. When shipped, the MAX1320 EV kit is set to use the MAX1320 internal clock, but an external clock can be supported. To use an external clock, connect the clock signal to the ECLK SMA connector, remove the shunt from JU4, and set the shunt on JU14 to the 2-3 position. In this configuration, the 68HC16MOD-16WIDE can no longer be used and the user must supply a parallel interface (i.e., a logic analyzer). When not using the 68HC16MOD-16WIDE as the parallel interface, the MAX1320 EV kit can be put into autoread mode by placing a jumper on pins 1-2 of JU3. In this mode, the MAX1320 EOC pin is connected to the RD strobe and available samples are immediately outputted on the parallel bus. When performing autoread, the CS pin can be connected low by placing a jumper between J1-9 and J1-10. Note that when the 68HC16MOD-16WIDE is not being used as the parallel interface, JU15 must be set to the 1-2 position and DVDD must be supplied between the DVDD and DGND pads on the EV kit. Jumper Selection Tables The following tables (Tables 1-9) explain the functionality of each jumper on the MAX1320 EV kit. Table 1. Midscale Voltage Select JUMPER SHUNT POSITION Short* JU1 Open Midscale voltage is set for unipolar inputs. DESCRIPTION Midscale voltage is set for bipolar inputs. *Default configuration. Table 2. Reference Select JUMPER SHUNT POSITION Short* DESCRIPTION Select on-board 2.5V reference (MAX6126) as voltage reference. Select internal 2.5V reference or external REF pad as voltage reference. Note that external reference must be between 2V and 3V. JU2 Open *Default configuration. Table 3. Autoread Mode JUMPER SHUNT POSITION Short Open* DESCRIPTION Connects RD and EOC lines for autoread mode. Disables autoread mode. JU3 *Default configuration. Table 4. ADC Clock-Source Select JUMPER SHUNT POSITION Short* JU4 Open Select external ECLK SMA as ADC system clock. DESCRIPTION Select internal clock as ADC system clock. *Default configuration. 6 _______________________________________________________________________________________ MAX1320 Evaluation Kit/Evaluation System Evaluate: MAX1316-MAX1327 Table 5. Buffered Input Select JUMPER SHUNT POSITION DESCRIPTION Channel X (where X is determined by the jumper number minus 5) input must appear on CHX-BUF pads and is buffered using the MAX4351. Channel X (where X is determined by the jumper number minus 5) input must appear on CHX pads and is not buffered. Table 7. ADC System Clock Select JUMPER SHUNT POSITION 1-2* JU14 2-3 Select external ECLK SMA as ADC system clock. DESCRIPTION Select internal clock as ADC system clock. Short* JU5-JU12 *Default configuration. Open Table 8. DVDD Select JUMPER SHUNT POSITION 1-2 JU15 2-3* DESCRIPTION DVDD supplied from DVDD pad. DVDD connected to VCC supply from 68HC16MOD-16WIDE. *Default configuration. Table 6. Midscale Reference Select JUMPER SHUNT POSITION 1-2 JU13 2-3* Midscale reference is set for bipolar inputs. DESCRIPTION Midscale reference is set for unipolar inputs. *Default configuration. Table 9. Positive Supply for Input Buffers (HVAVCC) Select JUMPER SHUNT POSITION 1-2 JU16 2-3* Open DESCRIPTION Positive supply to input buffers connected to AVDD. Positive supply to input buffers connected to HVAVCC pad. No positive supply to input buffers. *Default configuration. General Troubleshooting Problem 1: 68HC16MOD-16WIDE not found (see Figure 5). * Is LED1 on the 68HC16MOD-16WIDE lit? * Is the power supply connected? * Is SW1 turned to ON position? * Is the DB9 serial-communications cable connected? * Could another application be using the COM port (i.e., PDA software)? Problem 2: Cannot read data from MAX1320 EV kit. * Are JU5-JU12 set for buffered or unbuffered inputs? * Are the buffer power supplies (HVAVCC and HVAVEE) connected? * Are the MAX1320 EV kit power supplies (AVDD and DVDD) connected? * Are JU4 and JU14 set for internal or external clock? * Is the part in shutdown mode? *Default configuration. Problem 3: Data being read from the MAX1320 seems incorrect. * Are JU1 and JU13 set for bipolar or unipolar inputs? * Is the reference voltage entered correctly in the MAX1320 evaluation software? * Is the midscale voltage entered correctly in the MAX1320 evaluation software? * Is the correct part selected in the MAX1320 evaluation software? * Is the source impedance less than 100? _______________________________________________________________________________________ 7 MAX1320 Evaluation Kit/Evaluation System Evaluate: MAX1316-MAX1327 Figure 5. 68HC16MOD-16WIDE Not-Found Error Message 8 _______________________________________________________________________________________ MAX1320 Evaluation Kit/Evaluation System Evaluate: MAX1316-MAX1327 CH0-LPF CH1-LPF CH2-LPF CH3-LPF CH4-LPF CH5-LPF CH6-LPF AVDD CH7-LPF DVDD R8 100k J1 ALLON 48 R7 100k SHDN HEADER 2 x 9 J1-1 J1-2 15 17 38 10 11 CH6 CH0 CH1 CH2 CH3 CH4 CH5 AVDD AVDD AVDD MSV JU1 C4 2.2F C23 0.1F 6 MSV DVDD ALLON CH7 SHDN 47 46 DVDD JU4 R6 100k CONVST 45 DVDD ECLK 12 1 4 5 7 8 9 REFMS 18 C28 0.01F 12 JU13 3 19 JU2 2.500V C29 0.01F 20 C25 0.1F C5 2.2F C24 0.1F 22 C26 0.1F J1-3 J1-5 J1-4 J1-6 REFMS U1 CLK MAX1320 REF REF J1-7 R5 CONVST CONVST 100k J1-8 REF+ REF+ 44 CS REF- REF- DVDD CS R4 100k J1-9 J1-10 COM C6 2.2F C27 0.1F AVDD 1 2 3 21 COM WR 43 DVDD WR R3 100k J1-11 J1-12 JU14 13 2 INTCLK/EXTCLK RD 42 AGND 3 AGND 14 AGND 16 AGND 23 AGND DVDD RD R2 100k JU3 EOC J1-13 J1-14 EOLC 41 DVDD EOLC R1 100k J1-15 J1-16 39 DGND EOC D12 D10 D11 D13 D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 40 J1-17 J1-18 EOC 25 26 27 28 29 30 31 32 33 34 35 36 D12 24 D10 D11 J2-1 J2-26 J2-25 D13 J2-28 J2-27 D0 D1 D2 D3 D4 D5 D6 D7 D8 J2-3 J2-5 J2-7 J2-9 J2-12 J2-11 J2-14 J2-13 J2-16 J2-15 J2-18 J2-17 D9 J2-20 J2-19 J2-22 J2-21 J2-10 J2 J2-2 J2-4 J2-6 J2-8 HEADER 2 x 14 Figure 6. MAX1320 EV Kit Schematic (Sheet 1 of 3) _______________________________________________________________________________________ J2-24 J2-23 37 9 Evaluate: MAX1316-MAX1327 Figure 6. MAX1320 EV Kit Schematic (Sheet 2 of 3) HVAVCC CH1 R10 10 JU7 1 OUTA OUTB U3 2 INAR28 24 INB6 7 JU8 VCC 8 CH1-LPF R26 24 R27 24 INB6 C32 1000pF C33 1000pF CH2-LPF C34 1000pF R11 10 R12 10 CH3-LPF CH2 VCC OUTA OUTB U2 2 INA7 JU6 8 HVAVCC CH3 1 R25 24 MAX1320 Evaluation Kit/Evaluation System 10 MAX4351 5 CH1-BUF INA+ R18 8.66k 1% R19 8.66k 1% HVAVEE 4 VEE VEE CH2-BUF 3 INB+ 5 CH0 R9 10 JU5 CH0-LPF C31 1000pF MAX4351 CH0-BUF INA+ HVAVEE 4 3 INB+ CH3-BUF R20 8.66k 1% R17 8.66k 1% CH4 CH5 R14 10 R15 10 JU11 1 CH5-LPF R30 24 R31 24 2 INAINB6 C36 1000pF C37 1000pF CH6-LPF VCC OUTA OUTB U4 2 INA7 JU10 8 HVAVCC CH6 HVAVCC VCC OUTA U5 OUTB 8 7 JU12 R16 10 CH7 R13 10 1 JU9 CH4-LPF R29 24 CH7-LPF R32 24 C38 1000pF C35 1000pF MAX4351 5 CH5-BUF R22 8.66k 1% CH6-BUF R23 8.66k 1% MAX4351 3 INB- 6 CH4-BUF INA+ HVAVEE 4 VEE 3 INB+ INA+ HVAVEE 4 VEE INB+ 5 R24 8.66k 1% CH7-BUF R21 8.66k 1% AVDD HVAVCC JU16 1 C19 2.2F C11 0.1F C12 0.1F C13 0.1F C14 0.1F 2 3 HVAVCC HVAVEE ______________________________________________________________________________________ HVAVEE C2 2.2F C15 0.1F C16 0.1F C17 0.1F C18 0.1F MAX1320 Evaluation Kit/Evaluation System Evaluate: MAX1316-MAX1327 AVDD FB1 AVDD AGND C1 2.2F C7 0.1F C8 0.1F C9 0.1F JU17 AVDD JU18 JU19 2 C10 0.1F 1 C21 0.1F C20 0.1F GND 3 NR OUTS GNDS IN U6 MAX6126 VCC JU15 DVDD 1 2 3 C3 2.2F DGND DVDD I.C. I.C. OUTF 8 5 7 6 4 C30 4.7F C22 0.1F 2.500V J3 HEADER 2 x 20 FEMALE J3-1 J3-3 J3-5 VCC J3-7 J3-9 J3-2 J3-4 J3-6 J3-8 J3-10 VCC D0 D2 D4 D6 D8 D10 D12 J4-1 J4-3 J4-5 J4-7 J4-9 J4 HEADER 2 x 20 FEMALE J4-2 J4-4 J4-6 J4-8 J4-10 D1 D3 D5 D7 D9 D11 D13 J3-11 J3-12 ALLON SHDN J3-13 J3-14 J3-15 J3-16 J3-17 J3-18 CONVST J3-19 J3-20 J3-21 J3-22 J3-23 J3-24 J3-25 J3-26 J3-27 J3-28 J3-29 J3-30 J3-31 J3-32 J3-33 J3-34 CS WR J3-35 J3-36 J3-37 J3-38 J3-39 J3-40 RD EOLC EOC J4-11 J4-12 J4-13 J4-14 J4-15 J4-16 J4-17 J4-18 J4-19 J4-20 J4-21 J4-22 J4-23 J4-24 J4-25 J4-26 J4-27 J4-28 J4-29 J4-30 J4-31 J4-32 J4-33 J4-34 J4-35 J4-36 J4-37 J4-38 J4-39 J4-40 Figure 6. MAX1320 EV Kit Schematic (Sheet 3 of 3) ______________________________________________________________________________________ 11 MAX1320 Evaluation Kit/Evaluation System Evaluate: MAX1316-MAX1327 Figure 7. MAX1320 EV Kit Component Placement Guide--Component Side 12 ______________________________________________________________________________________ MAX1320 Evaluation Kit/Evaluation System Evaluate: MAX1316-MAX1327 Figure 8. MAX1320 EV Kit PC Board Layout--Component Side ______________________________________________________________________________________ 13 MAX1320 Evaluation Kit/Evaluation System Evaluate: MAX1316-MAX1327 Figure 9. MAX1320 EV Kit PC Board Layout--Solder Side 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. 14 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 (c) 2005 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products, Inc. |
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