19-2994; Rev 0; 9/03 MAX1168 Evaluation Kit/Evaluation System Ordering Information IC PACKAGE INTERFACE TYPE MAX1168EVKIT PART 24 QSOP User-supplied MAX1168EVC16 24 QSOP Windows software Note: The MAX1168 software is included with the MAX1168 EV kit but is designed for use with the complete EV system. The EV system includes a µC module and the EV kit. If the Windows software is not required, the EV kit board can be purchased by itself, without the µC module. Note: To evaluate the MAX1068, request a free sample of the MAX1068_CEG when ordering the MAX1168 EV kit. Features ♦ Proven PC Board Layout ♦ Windows® 95/98/2000/XP-Compatible Evaluation Software ♦ Convenient On-Board Test Points ♦ Fully Assembled and Tested MAX1168EVC16 System Component List PART MAX1168EVKIT 68HC16MODULE-DIP QTY 1 1 DESCRIPTION MAX1168 EV Kit 68HC16 µC Module Component Suppliers SUPPLIER PHONE WEBSITE Fairchild Semiconductor 888-522-5372 www.fairchildsemi.com TDK 847-803-6100 www.component.tdk.com Note: Please indicate you are using the MAX1168 when contacting these component suppliers. MAX1168EVKIT Component List DESIGNATION C1–C18, C21, C22 QTY 20 DESCRIPTION 0.1µF ±10%, 16V X7R ceramic capacitors (0603) TDK C1608X7R1C104KT C19, C20 2 10µF ±20%, 16V X5R ceramic capacitors (1210) TDK C3225X5R1C106M C23 1 1µF ±20%, 10V X5R ceramic capacitor (0805) TDK C2012X5R1A105M C24–C31 8 100pF ceramic capacitors (0603) TDK C1608C0G1H101J 8 0.22µF ±10%, 10V X7R ceramic capacitors (0603) TDK C1608X7R1A224K FB1, FB2 2 Surface-mount ferrite beads (0603) TDK MMZ1608B601C R1–R8 8 100Ω ±5% resistors (0603) C32–C39 DESIGNATION QTY R9–R16 8 DESCRIPTION R17–R24 8 10Ω ±5% resistors (0603) U1 1 16-bit ADC (24-pin QSOP) Maxim MAX1168CCEG U2 1 Logic buffer (5-SOT23) Fairchild Semiconductor NC7SZ125 U3–U10 8 Op amps (SOT23-5) Maxim MAX4430EUK J1 1 2 x 20 right-angle female connector Samtec SSW-120-02-S-D-RA 4.7kΩ ±5% resistors (0603) TB0 1 2-circuit terminal block JU1 1 2-pin header JU2 1 3-pin header None 2 Shunts None 1 PC board, MAX1168 EV kit None 1 MAX1168 EV kit software, CD-ROM Windows is a registered trademark of Microsoft Corp. ________________________________________________________________ Maxim Integrated Products 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. 1 Evaluates: MAX1068/MAX1168 General Description The MAX1168 evaluation system (EV system) is a complete 8-channel, 16-bit data-acquisition system that is comprised of a MAX1168 evaluation kit (EV kit) and a Maxim 68HC16MODULE-DIP microcontroller (µC) module. Order the complete EV system (MAX1168EVC16) for a comprehensive evaluation of the MAX1168 using a personal computer (PC). Order the EV kit (MAX1168EVKIT) separately if the 68HC16MODULE-DIP module has been purchased with a previous Maxim EV system, or for custom use in other µC-based systems. Evaluates: MAX1068/MAX1168 MAX1168 Evaluation Kit/Evaluation System MAX1168EV Kit Files FILE NAME FUNCTION INSTALL.EXE Installs the EV kit files on your computer MAX1168.EXE Application program HELPFILE.HTM MAX1168 EV kit help file UNINST.INI KIT1168.C16 Uninstalls the EV kit software Software loaded into the 68HC16 µC Quick Start Recommended Equipment • MAX1168EVC16 (MAX1168EVKIT board and 68HC16MODULE-DIP) • Three DC power supplies: +8V to +20V at 0.25A +5V at 0.2A -5V at 0.2A • Analog signal source: 0 to 4.096V • Windows 95/98/2000/XP-compatible computer with an available serial (COM) port • 9-pin I/O extension cable (straight-through femaleto-male) Procedure Do not turn on the power until all connections are complete: 1) Verify jumper JU1 is ON, disabling DSP mode. 2) Verify jumper JU2 is connected to pins 2–3, enabling an 8-bit-wide data-transfer mode. 3) Carefully connect the boards by aligning the 40-pin connector of the MAX1168 EV kit with the 40-pin header of the 68HC16MODULE-DIP module. Gently press them together. The two boards should be flush against one another. 4) Ensure that the µC module’s SW1 switch is in the OFF position. 5) Connect the +8V to +20V power supply to the µC module’s terminal block (J2), located next to the ON/OFF switch (SW1) along the top edge of the µC module. Observe the polarity marked on the board. 6) Connect the +5V power supply to the VDD pad (with respect to the GND pad) on the MAX1168 EV kit board. 7) Connect the -5V power supply to the VEE pad (with respect to the GND pad) on the MAX1168 EV kit board. 8) Connect the 9-pin serial cable from the computer’s serial port to the µC module’s DB9 connector (J3). 9) Install the MAX1168 EV kit software on your computer by running the INSTALL.EXE program on the CD-ROM. The program files are copied and icons are created in the Programs section within the Windows Start menu. 10) Turn on the +5V power supply. Next, turn on the -5V power supply. Finally, turn on the +8V to +20V power supply and turn on the µC module’s slide switch SW1 to the ON position. 11) Start the MAX1168 EV kit program by clicking on its icon in the Programs section within the Windows Start menu. 12) The Windows program will prompt you to click OK for Automatic serial port selection. When you click OK, the Windows program automatically downloads the file KIT1168.C16 to the module. Please wait approximately 25 seconds for the download to complete. 13) Apply an input signal (0 to +4.096V) between AIN0 and GND. Observe the AIN0 label on the running Windows program. Detailed Description of Software The evaluation software’s main window shown in Figure 1 displays the voltage and code of the analog-input signals AIN0–AIN7. The software supports manual read or automatic read operations. Separate comboboxes allow quick modifications to the MAX1168’s control byte. The SPI™ serial clock frequency is adjustable from 4.19MHz to 33kHz, and the software’s reference value can be changed to match the applied external reference. The provided Windows-compatible software supports SPI mode (not DSP mode) and also only supports the MAX1168 EV kit when configured in 8-bitwide data-transfer mode. Table 1 describes all the controls on the evaluation software’s main window. SPI is a trademark of Motorola, Inc 2 _______________________________________________________________________________________ MAX1168 Evaluation Kit/Evaluation System CONTROL DESCRIPTION The View menu makes the COM port debug form visible The BlockSample menu is an EV kit software feature that allows a single channel to be sampled and stored. The data block length is selectable and the data can be saved to a file. Block sampling is limited to single-channel read modes only. SCAN[1:0] = 01 or 11 modes are not supported. For multiple-channel reads, use the Read ADC button or the AutoRead checkbox. The Device menu allows the user to evaluate either the MAX1168 or MAX1068 The Help menu allows the user to view the help file or the software’s about box The Control Byte label shows the current control byte setting in hexadecimal The CS[2:0] combobox selects the channel below: 000 CS2 CS1 CS0 = Channel 0 001 CS2 CS1 CS0 = Channel 1 010 CS2 CS1 CS0 = Channel 2 011 CS2 CS1 CS0 = Channel 3 100 CS2 CS1 CS0 = Channel 4 101 CS2 CS1 CS0 = Channel 5 110 CS2 CS1 CS0 = Channel 6 111 CS2 CS1 CS0 = Channel 7 The SCAN[1:0] combobox selects the scan mode below: 00 SCAN1 SCAN0 = Single channel, no scan 01 SCAN1 SCAN0 = Sequentially scans channel 0 to CS[2:0] 10 SCAN1 SCAN0 = Sequentially scans channel 4 to CS[2:0]; CS[2:0] ≥ 4 11 SCAN1 SCAN0 = Scan channel CS[2:0] eight times The SEL[1:0] combobox selects the reference mode below: 00 SEL1 SEL0 = Internal reference mode 01 SEL1 SEL0 = EV kit software does not support this mode 10 SEL1 SEL0 = EV kit software does not support this mode 11 SEL1 SEL0 = External reference mode The CLK combobox selects the clock mode below: 0 EXT CLK 1 INT CLK The SPI SCLK Frequency combobox selections are: 02: 4.19MHz 04: 2.10MHz . . . FF: 33kHz _______________________________________________________________________________________ 3 Evaluates: MAX1068/MAX1168 Table 1. Software Control Descriptions Evaluates: MAX1068/MAX1168 MAX1168 Evaluation Kit/Evaluation System Table 1. Software Control Descriptions (continued) CONTROL DESCRIPTION The Set Vref button allows the user to specify the actual reference voltage. The evaluation software assumes a +4.096V reference voltage, unless otherwise specified. To override the default +4.096V software reference value, measure the actual reference voltage at the terminal block (TB0) on the MAX1168 EV kit board and enter the new reference voltage, without the volt unit. Finally, press the Set Vref button. The EV kit software uses the value typed in the Vref field to translate the digital code to a voltage. Pressing the Read ADC button performs the conversion(s) specified by the control byte and reads back the result(s). Checking the AutoRead checkbox performs the conversion(s) specified by the control byte and reads back the result(s) every 500ms. A blinking asterisk indicates AutoRead is active. The Exit button closes the program Detailed Description of Hardware MAX1168 EV System The MAX1168 EV system is a complete 8-channel, 16bit data-acquisition system consisting of a MAX1168 EV kit and a Maxim 68HC16MODULE-DIP µC module. The MAX1168 EV system is used to evaluate the MAX1168 8-channel, 16-bit serial ADC. See the Quick Start section for setup and operating instructions. See Table 1 for more information on the provided Windows software. MAX1168 EV Kit The MAX1168 EV kit board provides a proven layout for evaluating the MAX1168 8-channel, 16-bit ADC and can be obtained separately without the µC module for use with an existing µC. The MAX1168 EV kit contains two different types of buffers. U2 is a logic buffer to limit the load capacitance that is seen by the DOUT line of the MAX1168. U3–U10 are 16-bit accurate analog buffers connected in the unity-gain configuration. U1 is powered from VDD and U3–U10 are powered from VDD and VEE. U3 is powered from the µC module (J1-7, J1-8). A terminal block (TB0) has also been provided on the MAX1168 EV kit board for evaluating external reference mode. Refer to the MAX1167/MAX1168 or MAX1067/ MAX1068 data sheets to ensure all interface timing specifications are met. The MAX1168 and MAX1168 EV kit board support DSP and 16-bit-wide data-transfer mode. Jumpers JU1 and JU2 can be configured for these modes; however, the supplied EV kit Windows-compatible software does not support these two modes. Please refer to the MAX1167/MAX1168 or MAX1067/MAX1068 data sheets for more information. 4 Table 2. DSP Frame Sync Receive Input (DSPR) JUMPER JU1 SHUNT POSITION DESCRIPTION ON* DSP mode disable OFF DSP mode enable (the supplied Windows software does not support this mode) *Default configuration. Table 3. Data Bit Transfer Select Input (DSEL) JUMPER JU2 SHUNT POSITION DESCRIPTION 1–2 16-bit-wide data-transfer mode (the supplied Windows software does not support this mode) 2–3* 8-bit-wide data-transfer mode *Default configuration. Caution: Do not connect an external controller to the DSEL pad while a shunt is on jumper JU2. _______________________________________________________________________________________ MAX1168 Evaluation Kit/Evaluation System Evaluates: MAX1068/MAX1168 Figure 1. MAX1168 Evaluation Software’s Main Window _______________________________________________________________________________________ 5 6 AIN7 AIN6 AIN5 AIN4 AIN3 AIN2 AIN1 AIN0 C39 0.22µF R24 10Ω C38 0.22µF R23 10Ω C37 0.22µF R22 10Ω C36 0.22µF R21 10Ω C35 0.22µF R20 10Ω C34 0.22µF R19 10Ω C33 0.22µF R18 10Ω C32 0.22µF R17 10Ω R16 4.7kΩ R15 4.7kΩ R14 4.7kΩ R13 4.7kΩ R12 4.7kΩ R11 4.7kΩ R10 4.7kΩ R9 4.7kΩ VEE VEE VEE VEE AVDD AVDD 3 1 C9 0.1µF MAX4430 C14 0.1µF 1 AVDD C13 0.1µF MAX4430 C10 0.1µF 4 5 U9 3 1 C5 0.1µF MAX4430 C6 0.1µF 4 5 U7 3 1 C1 0.1µF MAX4430 C2 0.1µF 4 5 U5 3 4 5 U3 AVDD VEE VEE VEE VEE AVDD 3 MAX4430 C16 0.1µF 1 AVDD C15 0.1µF MAX4430 C12 0.1µF 1 AVDD C11 0.1µF 4 5 U10 3 1 C7 0.1µF MAX4430 C8 0.1µF 4 5 U8 3 1 C3 0.1µF MAX4430 C4 0.1µF 4 5 U6 3 4 5 U4 AVDD C31 100pF R8 100Ω C30 100pF R7 100Ω C29 100pF R6 100Ω C28 100pF R5 100Ω C27 100pF R4 100Ω C26 100pF R3 100Ω C25 100pF R2 100Ω C24 100pF R1 100Ω C19 10µF AIN1 19 AIN0 AVDD 14 13 12 11 22 DVDD DVDD FB2 MAX1168 U1 FB1 AGND AGND 18 17 AIN7 AIN6 AIN5 AIN4 10 AIN3 9 AIN2 8 7 C17 0.1µF AVDD DGND 21 DIN SCLK DSPX EOC DSEL DSPR N.C. REFCAP REF CS DOUT C18 0.1µF 24 16 15 20 3 5 4 23 6 2 1 C21 0.1µF C23 1µF 3 1 2 JU1 AVDD JU2 C20 10µF CS GND VEE DOUT DIN SCLK DSPX EOC DESL DSPR 2 x 20 RIGHT ANGLE FEMALE CONNECTOR VEE TERMINAL BLOCK TB0–2 TB0–1 UCVDD J1 J1–34 J1–33 J1–32 J1–31 J1–3 J1–4 J1–5 J1–6 J1–18 J1–17 TB0 J1–38 J1–36 J1–35 J1–37 J1–19 J1–20 J1–15 J1–16 J1–21 J1–14 J1–22 J1–23 J1–13 J1–24 J1–12 J1–25 J1–26 J1–27 J1–28 J1–29 J1–11 J1–10 J1–9 J1–8 J1–7 J1–39 J1–2 J1–30 J1–40 J1–1 3 1 2 GND DE A U2 NC7SZ125 5 Y 4 DOUT C22 0.1µF UCVDD DIN SCLK CS TP1–6 VCC DVDD TP1–5 TP1–4 TP1–3 TP1–2 TP1–1 TB1 Evaluates: MAX1068/MAX1168 MAX1168 Evaluation Kit/Evaluation System Figure 2. MAX1168 EV Kit Schematic _______________________________________________________________________________________ MAX1168 Evaluation Kit/Evaluation System Evaluates: MAX1068/MAX1168 Figure 3. MAX1168 EV Kit Component Placement Guide—Component Side _______________________________________________________________________________________ 7 Evaluates: MAX1068/MAX1168 MAX1168 Evaluation Kit/Evaluation System Figure 4. MAX1168 EV Kit PC Board Layout—Component Side 8 _______________________________________________________________________________________ MAX1168 Evaluation Kit/Evaluation System Evaluates: MAX1068/MAX1168 Figure 5. MAX1168 EV Kit PC Board Layout—Inner Layer 2 (GND) _______________________________________________________________________________________ 9 Evaluates: MAX1068/MAX1168 MAX1168 Evaluation Kit/Evaluation System Figure 6. MAX1168 EV Kit PC Board Layout—Inner Layer 3 (VDD) 10 ______________________________________________________________________________________ MAX1168 Evaluation Kit/Evaluation System Evaluates: MAX1068/MAX1168 Figure 7. MAX1168 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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 11 © 2003 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.