Evaluate: MAX1286/MAX1288/MAX1086/MAX1088 19-2251 Rev 0 12/01 MAX1286 Evaluation Kit and Evaluation System General Description Features The MAX1286 evaluation system (EV system) is a com- Proven PC Board Layout plete 12-bit, 2-channel data-acquisition system, consist- Windows 95/98 Evaluation Software ing of a MAX1286 evaluation kit (EV kit) and a Maxim 68HC16MODULE-DIP microcontroller (C) module. Convenient On-Board Test Points Order the complete EV system (MAX1286EVC16) for a Fully Assembled and Tested comprehensive evaluation of the MAX1286 using a per- sonal computer (PC). Order the EV kit (MAX1286EVKIT) separately if the 68HC16MODULE-DIP module has already been purchased with a previous Maxim EV sys- tem or for custom use in other C-based systems. The MAX1286 EV kit can also be used to evaluate the Ordering Information MAX1288, MAX1086, and MAX1088. PART TEMP RANGE INTERFACE MAX1286EVKIT 0 C to +70C User Supplied MAX1286EVC16 0C to +70C Windows Note: The MAX1286 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. Component List MAX1286EVC16 System PART QTY DESCRIPTION MAX1286EVKIT 1 MAX1286 EV kit 68HC16MODULE-DIP 1 68HC16 C module MAX1286EVKIT DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION U2 1 MAX6064AEUR-T (SOT23-3) C1, C4 2 0.1F ceramic capacitors (0603) PC board, MAX1286 100pF ceramic capacitors None 1 C2, C3 2 Evaluation Kit (0603) C5 0 Open (0603) 3.5in software disk, MAX1286 None 1 Evaluation Kit 2 20 right-angle female J1 1 connector MAX1286 EV kit data sheet Samtec SSW-120-02-S-D-RA None 1 (includes 68HC16MODULE-DIP manual) TP1 1 5-pin header None 1 MAX1286 data sheet U1 1 MAX1286EKA-T (SOT23-8) Windows 95/98 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 Maxims website at www.maxim-ic.com.MAX1286 Evaluation Kit and Evaluation System Quick Start Detailed Description Recommended Equipment MAX1286 Standalone EV Kit Before you begin, you will need the following equip- The MAX1286EVKIT provides a proven PC board layout ment: to evaluate the MAX1286. It must be interfaced to appropriate timing signals for proper operation. Maxim MAX1286EVC16 (MAX1286EVKIT board and Connect 5V to VDD and connect ground return to GND. 68HC16MODULE-DIP) Refer to Figure 2, MAX1286 EV Kit Schematic, and the A DC power supply (8V - 20V) MAX1286 data sheet for timing requirements. An IBM-compatible PC with Windows 95/98 MAX1286 EV System A free standard serial port, preferably a 9-pin plug The MAX1286EVC16 EV system operates from a user- A standard serial cable to connect the PCs standard supplied 8V to 20V DC power supply. Windows 95/98 serial port to the 68HC16MODULE-DIP module software interfaces to the EV system board through the PCs standard serial port. See the Quick Start section 1) Carefully connect the boards by aligning the 40-pin for setup and operating instructions. connector of the MAX1286 EV kit with the 40-pin header of the 68HC16MODULE-DIP module. Gently Detailed Description press them together. The two boards should be of Software flush against one another. The evaluation softwares main window is shown in 2) Ensure that the C module SW1 switch is in the OFF Figure 1. It controls the serial clock speed and sample position. rate. It also displays the voltage and output code as 3) Connect the 8V to 20V power supply to the C mod- well as some statistics of the input signal. A separate ule terminal block located next to SW1. Observe the graph shows the data changing in real time. The polarity marked on the board. update rate is limited to about 10 samples per second, 4) Connect a standard serial cable from the computers due to COM port bandwidth limitations. serial port to the C module. If the PCs standard ser- Part Selection ial port has a 9-pin connector, use a straight- The part selection area allows the user to evaluate other through, 9-pin female-to-male cable. If the PCs only parts in the MAX1286 family. Use the pulldown menu to available standard serial port has a 25-pin connec- select the MAX1286, MAX1288, MAX1086 or MAX1088. tor, a standard 25-pin to 9-pin adapter will be The default part is the MAX1286. required. The EV kit software checks the modem status lines (CTS, DSR, DCD) to confirm that the cor- Channel Selection rect port has been selected. The channel selection area allows the user to select 5) Install the MAX1286 EV kit software on your comput- AIN1 only, AIN2 only, or AIN1 and AIN2 by simply er by running the INSTALL.EXE program on the flop- checking the corresponding channel checkbox. The py disk. The program files are copied and icons are current voltage and code is also displayed for each created for them in the Windows Start Menu. active channel. 6) Start the MAX1286 program by opening its icon in ADC to C Sample Rate the Start Menu. The SPI SCLK frequency area allows the user to mod- 7) The Windows program will prompt you to connect ify the ADC to C sample rate. Use the pulldown menu the C module and turn its power on. Slide SW1 to to select the desired SCLK frequency. The first two dig- the ON position. When you click OK, the Windows its are the divisor for the Cs internal clock. The next program will automatically download KIT1286.C16 to floating point number is the corresponding SCLK fre- the module. quency. The voltage at the ADCs active channels is digitized and stored in the Cs memory. The approxi- 8) Apply an input signal (0V to V ) between AIN1 REF and GND. Observe the readout on the running mate ADC to C sample rate is displayed on the right side of the main window. Windows program. SPI is a trademark of Motorola, Inc. 2 Evaluate: MAX1286/MAX1288/MAX1086/MAX1088