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19-2582; Rev 0; 9/02
MAX1162 Evaluation System/Evaluation Kit
General Description
The MAX1162 evaluation system (EV system) is a complete 16-bit data-acquisition system consisting of a MAX1162 evaluation kit (EV kit) and a Maxim 68HC16MODULE-DIP microcontroller (C) module. Order the complete EV system (MAX1162EVC16) for comprehensive evaluation of the MAX1162, using a personal computer (PC). Order the EV kit (MAX1162EVKIT) separately if the 68HC16MODULE-DIP module has already been purchased with a previous Maxim EV system or for custom use in other C-based systems. This EV kit can also be used to evaluate the MAX1062 14-bit ADC. o Proven PC Board Layout o Windows(R) 95/98/2000 Evaluation Software o Convenient On-Board Test Points o Fully Assembled and Tested
Features
Evaluate: MAX1162/MAX1062
Ordering Information
PART MAX1162EVKIT MAX1162EVC16 TEMP RANGE 0C to +70C 0C to +70C INTERFACE TYPE User supplied Windows software
MAX1162 EV Kit Files
PROGRAM INSTALL.EXE MAX1162.EXE KIT1162.C16 FUNCTIONS Installs the EV kit files on your computer Application program Software loaded into 68HC16 microcontroller
Note: The MAX1162 software is designed for use with the complete EV system. It includes both a C module and the EV kit. If the Windows software will not be used, the EV kit board can be purchased by itself, without the C module. To evaluate the MAX1062, request a MAX1062AEUB free sample when ordering this EV kit.
MAX1162EVC16 System
PART MAX1162EVKIT 68HC16MODULE-DIP QTY 1 1 DESCRIPTION MAX1162 EV kit 68HC16 C module
Component List
DESIGNATION C1, C4 QTY 2 DESCRIPTION 10F 20%, 16V X5R ceramic capacitors (1210) TDK C3225X5R1C106M 0.1F 10%, 16V X7R ceramic capacitors (0603) TDK C1608X7R1C104KT 4.7F 20%, 16V X5R ceramic capacitor (1206) TDK C3216X5R1C475M 4700pF 10%, 50V X7R ceramic capacitor (0603) TDK C1603X7R1H472KT Surface-mount ferrite beads (0603) TDK MMZ1608B601C 2 x 20 right-angle female connector 200 1% resistor (0603) DESIGNATION TB0 TP1 U1 C2, C3, C5, C7, C8 5 U2 U3 QTY 1 1 1 1 1 DESCRIPTION 2-circuit terminal block 5-pin header 16-bit ADC (10-pin MAX) MAX1162BCUB Logic buffer (5-pin SOT23) Fairchild Semiconductor NC7SZ125 Op amp (5-pin SOT23) MAX4430EUK MAX1162 EV kit data sheet (includes 68HC16MODULE-DIP manual) PC board, MAX1162 evaluation kit 3.5in software disk, MAX1162 evaluation kit MAX1162 data sheet
C6
1
None None None None
1 1 1 1
C9
1
FB1, FB2 J1 R1
2 1 1
Windows is a registered trademark of Microsoft Corp. 1
________________________________________________________________ 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.
MAX1162 Evaluation System/Evaluation Kit Evaluate: MAX1162/MAX1062
Component Suppliers
SUPPLIER Fairchild Semiconductor TDK PHONE 888-522-5372 847-803-6100 WEBSITE www.fairchildsemi.com www.component.tdk.com
Note: Please indicate you are using the MAX1162 when contacting these component suppliers.
Quick Start
Recommended Equipment
Before you begin, you will need the following equipment: * MAX1162EVC16 (MAX1162EVKIT board and 68HC16MODULE-DIP) * * * * * * Three DC power supplies: 8V to 20V, 5V, and -5V External reference: +4.096V Analog signal source: 0 to +4.096V An IBM-compatible PC with Windows 95/98/2000 An available standard serial port, preferably a 9-pin plug A standard serial cable to connect the PC's standard serial port to the 68HC16MODULE-DIP module
7) Connect a standard serial cable from the computer's serial port to the C module. If the PC's standard serial port has a 9-pin connector, use a straight-through, 9-pin female-to-male cable. If the PC's only available standard serial port has a 25-pin connector, a standard 25-pin to 9-pin adapter is required. The EV kit software checks the modem status lines (CTS, DSR, DCD) to confirm that the correct port has been selected. 8) Install the MAX1162EV kit software on your computer by running the INSTALL.EXE program on the floppy disk. The program files are copied and icons are created in the Programs section within the Windows Start menu. 9) Turn on all power supplies and enable the reference voltage. 10) Start the MAX1162 EV kit program by clicking on its icon in the Programs section within the Windows Start menu. 11) The Windows program prompts you to connect the C module and turn its power on. Slide SW1 to the ON position. When you click OK, the Windows program automatically downloads the file KIT1162.C16 to the module. 12) Apply an input signal (0V to VREF) between AIN and GND. Observe the readout on the running Windows program.
Procedure
1) Carefully connect the boards by aligning the 40-pin connector of the MAX1162 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. 2) Ensure that the C module's SW1 switch is in the OFF position. 3) Connect the 8V to 20V power supply to the C module's terminal block (J2) located next to SW1. Observe the polarity marked on the board. 4) Connect the 5V power supply to the VDD pad (with respect to the GND pad) on the MAX1162 EV kit board. 5) Connect the -5V power supply to the VEE pad (with respect to the GND pad) on the MAX1162 EV kit board. 6) Apply a 4.096V reference voltage to the MAX1162 EV kit's terminal block (TB0) located in the upper left corner of the MAX1162 EV kit board. Observe the polarity marked on the board.
Detailed Description
MAX1162 Stand-Alone EV Kit
The MAX1162 EV kit provides a proven PC board layout to evaluate the MAX1162. It must be interfaced to appropriate timing signals for proper operation. Connect 5V to VDD and -5V to VEE with respect to GND. Apply a 4.096V reference voltage to the MAX1162 EV kit's terminal block (TB0) located in the upper left corner of the MAX1162 EV kit board. Refer to the MAX1162 EV Kit Schematic and the MAX1162 data sheet for timing requirements.
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MAX1162 Evaluation System/Evaluation Kit
MAX1162 EV System
The MAX1162EVC16 EV system operates from three user-supplied power supplies: 8V to 20V, 5V, and -5V. Connect the 8V to 20V power supply to the C module's terminal block (J2) located next to SW1. Observe the polarity marked on the board. Connect 5V to VDD and -5V to VEE with respect to GND on the MAX1162 EV kit board. Apply a 4.096V reference voltage to the MAX1162 EV kit's terminal block (TB0) located in the upper left corner of the MAX1162 EV kit board. See the MAX1162 EV Kit Schematic. Windows 95/98/2000 software interfaces to the EV system board through the PC's standard serial port. See the Quick Start section for complete setup and operating instructions. To retrieve a block of consecutively sampled data to the PC, click on the Sample menu located at the top left hand corner of the main window. The data block length is selectable and the data can be saved to a file.
Evaluate: MAX1162/MAX1062
Statistics
The Minimum and Maximum fields in the statistics area show the highest and lowest readings acquired. The Average field displays a running mean. When reading data manually by pressing the Read button, the Average and RMS fields require approximately five samples until they are accurately represented. The Clear Statistics button resets the statistics. To remove offset errors, first apply zero volts to the active input channel, press the Clear Statistics button, acquire some samples, and then check the Null Offset checkbox. Once checked, the label next to the Null Offset checkbox shows the sampled offset error. This value is subtracted from all subsequent measurements until the checkbox is unchecked.
Detailed Description of Software
The EV software's main window is shown in Figure 1. It controls the serial clock speed and sample rate. It also displays the voltage and output code as well as some statistics of the input signal. A separate graph shows the data changing in real time. The update rate is limited to about 10 samples per second, due to COM port bandwidth limitations.
Reference Voltage
The EV software assumes a 4.096V reference voltage, unless otherwise specified. To override the 4.096V reference value, apply the new reference voltage at the terminal block (TB0) on the MAX1162 EV kit board, type in the new reference voltage, without the volt unit, and 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.
Sample Rate
The SPI SCLK Frequency area allows the user to vary the ADC to C sample rate. The PC is not capable of retrieving the data that was stored in the memory of the C as fast as the C can obtain the data from the ADC. This is because the C's SPI interface is much faster than the PC's standard serial port. Hence, the ADC to C sample rate refers to the sample rate at which data is being sampled by the ADC and stored in the C's memory. Use the pulldown menu to select the desired SCLK frequency. The first two digits are the divisor for the C's internal clock. The next floating point number is the corresponding SCLK frequency. The ADC to C sample rate is displayed in the ADC to C sample rate field located on the right side of the main window. The C to PC transfer rate is controlled using the field at the bottom of the main window and can be controlled in two different ways. Pressing the Read button allows the user to manually grab a sample from the C's memory. Clicking the Read Every checkbox allows the user to automatically read samples from the C's memory at a rate selectable in milliseconds.
Detailed Description of Hardware
The MAX1162 is a 16-bit serial ADC. When the MAX1162 EV kit board is connected to the 68HC16MODULE-DIP module, power is provided to U2 by the module. The user must also provide 5V to VDD and -5V to VEE (with respect to the GND pads) on the MAX1162 EV kit board. The MAX1162 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 MAX1162. U1 is powered from VDD. U3 is powered from VDD and VEE. A terminal block (TB0) has also been provided on the MAX1162 EV kit board for the external reference. See the Reference Voltage section and the MAX1162 EV Kit Schematic.
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MAX1162 Evaluation System/Evaluation Kit Evaluate: MAX1162/MAX1062
Note: The MAX1162 evaluation software's main window controls the MAX1162 and displays conversion results. Figure 1. MAX1162 EV Software's Main Window
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MAX1162 Evaluation System/Evaluation Kit Evaluate: MAX1162/MAX1062
AVDD VDD GND C1 10F C2 0.1F FB1 C3 0.1F C4 10F TP1 TP1-1 TP1-2 2 AVDD 10 C9 4700pF 1 AIN U1 MAX1162 REF SCLK 5 CS 8 DVDD J1-38 4 J1-37 U2 NC7SZ125 1 OE VCC 5 C5 0.1F TP1-3 TP1-5 TP1-4 TEST POINT J1 J1-1 2 A J1-2 2 VEE C7 0.1F VCC 5 TBO-2 AGND AGND DGND C8 0.1F 3 9 7 FB2 3 GND Y 4 J1-4 J1-35 J1-3 DVDD
FERRITE
AIN
3 IN+ OUT IN-
1 4
R1 200 1%
UCVDD
DVDD
TBO GND U3 MAX4430 TBO-1
TERMINAL BLOCK
C6 4.7F
DOUT
6
VEE
GND
FERRITE
UCVDD J1-7 J1-8
Figure 2. MAX1162 EV Kit Schematic
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MAX1162 Evaluation System/Evaluation Kit Evaluate: MAX1162/MAX1062
Figure 3. MAX1162 EV Kit Component Placement Guide-- Component Side
Figure 4. MAX1162 EV Kit PC Board Layout--Component Side
Figure 5. MAX1162 EV Kit PC Board Layout--Inner Layer 2 (GND)
Figure 6. MAX1162 EV Kit PC Board Layout--Inner Layer 3 (VDD)
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MAX1162 Evaluation System/Evaluation Kit Evaluate: MAX1162/MAX1062
Figure 7. MAX1162 EV Kit PC Board Layout--Solder Side
Figure 8. MAX1162 EV Kit Component Placement Guide-- 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 _____________________ 7 (c) 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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