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Maxim MAX1402 manual

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Table of contents for the manual

  • Page 1

    General Description 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 converter (ADC). Windows ® 98/2000/XP-compatible so[...]

  • Page 2

    Evaluate: MAX1400/MAX1402 MAX1402 Evaluation Kit/Evaluation System 2 _______________________________________________________________________________________ Quick Start Recommended Equipment (USB Port/PC Connection Option) Before beginning, the following equipment is needed: • MAX1402 EV system: MAX1402 EV kit 68HC16MODULE-DIP USBTO232 (USB cable[...]

  • Page 3

    switch, along the top-edge of the µC module. Observe the polarity marked on the board. 5 ) Connect the USBTO232 board to the 68HC16MODULE- DIP module if you have not done so already. 6) The MAX1402 EV kit software should have already been downloaded and installed in the USBTO232 Quick Start. 7) Start the MAX1402 program by opening its icon in the [...]

  • Page 4

    Evaluate: MAX1400/MAX1402 1 0 ) 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. 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 say[...]

  • Page 5

    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). Vie[...]

  • Page 6

    Evaluate: MAX1400/MAX1402 MAX1402 Evaluation Kit/Evaluation System 6 _______________________________________________________________________________________ For simplicity, the EV kit software assumes that all three transfer functions are configured alike. Detailed Description ________________________of Hardwar e U1, the MAX1402, is a multichannel,[...]

  • Page 7

    Evaluate: MAX1400/MAX1402 MAX1402 Evaluation Kit/Evaluation System _______________________________________________________________________________________ 7 Table 3. Default Jumper Settings * Default trace on top layer of PCB. JUMPER STATE FUNCTION JU1 Closed* Use CalGain inputs for gain calibration (CALGAIN+ = REFIN+) JU2 Closed* Use CalGain input[...]

  • Page 8

    Evaluate: MAX1400/MAX1402 MAX1402 Evaluation Kit/Evaluation System 8 _______________________________________________________________________________________ Table 4. Guide to Register Bit Functions REGISTER BIT NAME DESCRIPTION COMMS 0/DRDY Start bit is zero; DIN pin must be 1 when idle RS2–RS0 Register select for subsequent operation R/ W Select[...]

  • Page 9

    Evaluate: MAX1400/MAX1402 MAX1402 Evaluation Kit/Evaluation System _______________________________________________________________________________________ 9 MAX1402 U1 MAX6025 U2 MCLKIN MCLKOUT J1-34 J1-33 DS1 JU6 JU7 DS0 OUT2 OUT1 GND AIN1 AIN2 AIN3 AIN4 AVDD SMA J2 2 3 1 Y1 2.4576MHz 28 SCLK J1-37 J1-7 J1-1 J1-2 J1-3 J1-4 C15 2.2 μ F J1-6 3 1 2 [...]

  • Page 10

    Evaluate: MAX1400/MAX1402 MAX1402 Evaluation Kit/Evaluation System 10 ______________________________________________________________________________________ Figure 2. MAX1402 EV Kit Component Placement Guide—Component Side[...]

  • Page 11

    Evaluate: MAX1400/MAX1402 MAX1402 Evaluation Kit/Evaluation System ______________________________________________________________________________________ 11 Figure 3. MAX1402 EV Kit PCB Layout—Component Side[...]

  • Page 12

    Evaluate: MAX1400/MAX1402 MAX1402 Evaluation Kit/Evaluation System 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[...]