MAX1402EVKIT+

19-1440; Rev 2; 5/07 MAX1402 Evaluation Kit/Evaluation System The MAX1402 evaluation system (EV system) is a complete, multichannel data-acquisition system consisting of a MAX1402 evaluation kit (EV kit), Maxim 68HC16 microcontroller (µC) module, and USBT0232. The MAX1402 is a low-power, multichannel, serial-output analog to digital converter (ADC). Windows® 98/2000/XP-compatible software provides a handy user interface to exercise the MAX1402’s features. Source code in C++ and 68HC11 assembly language is provided for the low-level portion of the software. Order the EV system for comprehensive evaluation of the MAX1402 using a personal computer. Order only the EV kit if the 68HC16 µC module has already been purchased with a previous Maxim EV system, or for custom use in other µC-based systems. The MAX1402 EV kit and EV system can also be used to evaluate the MAX1400. Simply order a free sample of the MAX1400CAI along with the MAX1402 EV kit. MAX1402 Stand-Alone EV Kit The MAX1402 EV kit provides a proven printed-circuit board (PCB) layout to facilitate evaluation of the MAX1402 with user-supplied software and hardware. It must be interfaced to appropriate timing signals for proper operation. Refer to the MAX1402 IC data sheet for timing requirements. See Table 2, Jumper Functions. Features ♦ Easy to Configure ♦ Collects Up to 8192 Samples at Full Speed ♦ Complete Evaluation System ♦ Proven PCB Layout ♦ Fully Assembled and Tested ♦ EV Kit Software Supports Windows 98/2000/XP with RS-232/COM Port ♦ EV Kit Software Supports Windows 2000/XP with USB Port Ordering Information TYPE RANGE INTERFACE TYPE MAX1402EVKIT PART 0°C to +70°C User supplied MAX1402EVC16 0°C to +70°C Windows software Note: The MAX1402 software can only be used with the complete evaluation system (MAX1402EVC16), which includes the 68HC16MODULE-DIP, USBTO232, and the MAX1402EVKIT. MAX1402 EV Kit PART QTY C3–C8 6 C9, C10, C11 3 0.1µF ceramic capacitors (1206) Murata GRM319R71H104K TDK C3216X7R1H104K Component Lists C12, C13 2 Not installed, capacitors MAX1402 EV System C15 1 2.2µF, 25V X7R ceramic capacitor TDK C3216X7R1E225K J1 1 2 x 20 right-angle socket J2 1 Female SMA connector JU1–JU8 0 Not installed R1–R6 6 100Ω ±5% resistors (1206) R7, R8 2 10Ω ±5% resistors (1206) MAX1402 EV System The MAX1402 EV system operates from a user-supplied +8V to +12VDC power supply. PART DESCRIPTION 100pF ceramic capacitors (1206) TDK C3216C0G2J101K QTY DESCRIPTION MAX1402EVKIT 1 MAX1402 EV kit 68HC16MODULE-DIP 1 68HC16 µC module USBTO232+ 1 USB-to-COM port adapter board +Denotes lead-free and RoHS-compliant. R9, R10 2 Not installed, resistors U1 1 MAX1402CAI (28-pin SSOP) U2 1 MAX6025AEUR (SOT23) 2.500V voltage reference (200ppm/°C max) Y1 1 2.4576MHz ceramic resonator Murata CSTCC2M45G53-R0 — 1 PCB: MAX1402 Evaluation Kit+ Windows is a registered trademark of Microsoft Corp. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 1 Evaluate: MAX1400/MAX1402 General Description Evaluate: MAX1400/MAX1402 MAX1402 Evaluation Kit/Evaluation System Component Suppliers PHONE FAX Murata Mfg. Co., Ltd. SUPPLIER 770-436-1300 770-436-3030 www.murata.com WEBSITE TDK Corp. 847-803-6100 847-390-4405 www.component.tdk.com Note: Indicate that you are using the MAX1402 when contacting these component suppliers. MAX1402 EV Kit Files Quick Start Windows Application Program Files Recommended Equipment (USB Port/PC Connection Option) FILE DESCRIPTION MAX1402.EXE Application program that runs under Windows 98/2000/XP. MAX1402.HLP Help file KIT1402.C16 Software loaded into 68HC16 microcontroller. MAX1402.INI Program settings file Example Source Code Files FILE DESCRIPTION MAX1402.CPP Source code module for driving the MAX1402, provided for reference. Includes definitions of the register names and lowlevel access routines. Compiled with Borland C++ 4.52. Maxim holds the copyright, but allows customers to adapt the program for their own use without charge. MAX1402.H Header file for MAX1402.CPP, provided for reference. 68HC16 Source Code Files FILE 2 DESCRIPTION KIT1402.ASM Main source code for the KIT1402.C16 program, provided for reference. Maxim holds the copyright, but allows customers to adapt the program for their own use without charge. EVKIT.ASM Source code defining the program interface with the Maxim 68HC16 Module ROM (Rev. 2.0). Before beginning, the following equipment is needed: • MAX1402 EV system: MAX1402 EV kit 68HC16MODULE-DIP USBTO232 (USB cable included) • A DC power supply that generates +8VDC to +12VDC at 30–50mA • A user-supplied Windows 2000/XP computer with an available USB port to connect to the USBTO232 board Note: In the following sections, software-related items are identified by bolding. Text in bold refers to items directly from the EV kit software. Text in bold and underlined refers to items from the Windows 2000/XP operating system. Connections and Setup The MAX1402 EV kit is fully assembled and tested. Follow the steps below to verify board operation. Caution: Do not turn on the power supply until all connections are completed. 1) Visit the Maxim website (www.maxim-ic.com) to download the latest version of the USBTO232 User Guide. Follow the steps in the USBTO232 User Guide Quick Start section and return to step 2 of this Quick Start section when finished. 2) Make sure your 68HC16MODULE-DIP module has the Rev. 2.0 ROM. The software will not function with the Rev. 1.0 ROM. 3) Carefully connect the boards by aligning the 40-pin header of the MAX1402 EV kit with the 40-pin connector of the 68HC16MODULE-DIP module. Gently press them together. The two boards should be flush against one another. 4) Connect the DC power source to the µC module at terminal block J2, located next to the ON/OFF _______________________________________________________________________________________ MAX1402 Evaluation Kit/Evaluation System 5) Connect the USBTO232 board to the 68HC16MODULEDIP 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. FILE INSTALL.EXE UNINST.INI UNMAXIM.EXE DESCRIPTION Installs the EV kit files on your computer. Database for uninstall program. Removes the EV kit files from your computer. This file is automatically copied to C:\WINDOWS during installation. 7) Start the MAX1402 program by opening its icon in the Start | Programs menu. 8) Turn on power supply and slide SW1 to the ON position on the 68HC16MODULE-DIP module. Press the OK button to automatically connect and download the KIT1402.C16 file to the module. 9) When the software successfully establishes communication with the EV kit board, you will see a configuration tool and some other windows. Verify that the CLKIN and reference voltage settings are correct. Close or minimize this dialog box. 10) 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. Recommended Equipment (RS-232-to-COM Port/PC Connection Option) Before beginning, the following equipment is needed: • MAX1402 EV system: MAX1402 EV kit 68HC16MODULE-DIP • A DC power supply that generates +8VDC to +12VDC at 30–50mA • A user-supplied Windows 98/2000/XP computer with an available serial communications port, preferably a 9-pin plug • A serial cable to connect the computer’s serial port to the 68HC16MODULE-DIP Note: In the following sections, software-related items are identified by bolding. Text in bold refers to items directly from the EV kit software. Text in bold and underlined refers to items from the Windows 98/2000/XP operating system. Connections and Setup 1) Visit the Maxim website (www.maxim-ic.com/evkitsoftware) to download the latest version of the EV kit software. Save the EV kit software to a temporary folder and uncompress the file (if it is a .zip file). 2) Install the MAX1402 EV kit software on your computer by running the INSTALL.EXE program. The program files are copied and icons are created for them in the Windows Start | Programs menu. 3) Make sure your 68HC16MODULE-DIP module has the Rev. 2.0 ROM. The software will not function with the Rev. 1.0 ROM. 4) Carefully connect the boards by aligning the 40-pin header of the MAX1402 EV kit with the 40-pin connector of the 68HC16MODULE-DIP module. Gently press them together. The two boards should be flush against one another. 5) Connect the DC power source to the µC module at terminal block J2, located next to the ON/OFF switch, along the top-edge of the µC module. Observe the polarity marked on the board. 6) Connect a cable from the computer’s serial port to the µC module. If using a 9-pin serial port, use a straight-through, 9-pin female-to-male cable. If the only available serial port uses a 25-pin connector, a standard 25-pin-to-9-pin adapter will be required. The EV kit software checks the modem status lines (CTS, DSR, and DCD) to confirm that the correct port has been selected. FILE INSTALL.EXE UNINST.INI UNMAXIM.EXE DESCRIPTION Installs the EV kit files on your computer. Database for uninstall program. Removes the EV kit files from your computer. This file is automatically copied to C:\WINDOWS during installation. 7) Start the MAX1402 program by opening its icon in the Start | Programs menu. 8) Turn the power on and slide SW1 to the ON position. Select the correct serial port and press the OK button. The program will automatically download KIT1402.C16 to the module. 9) When the software successfully establishes communication with the EV kit board, you will see a configuration tool and some other windows. Verify that the CLKIN and reference voltage settings are correct. Close or minimize this dialog box. _______________________________________________________________________________________ 3 Evaluate: MAX1400/MAX1402 switch, along the top-edge of the µC module. Observe the polarity marked on the board. Evaluate: MAX1400/MAX1402 MAX1402 Evaluation Kit/Evaluation System 10) 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 says Rev. 1.0, contact the factory for a replacement. To install the new ROM, use the following procedure. Use antistatic handling precautions. To reduce the risk of ESD damage, gather all required materials and perform the installation at one sitting: 1) Slide the ON/OFF switch to the OFF position. 2) Using a flat-blade screwdriver, gently pry U3, the REV 1.0 ROM, out of its socket. 3) Remove the REV 2.0 ROM from its antistatic packaging. 4) Align the REV 2.0 ROM in the U3 socket pins. Observe correct polarity (the notch at the top of the ROM). Verify that the pins are lined up with the socket, and gently press the ROM into place. Proceed to the regular Quick Start instructions. Detailed Description _________________________of Software The MAX1402 digitizes up to seven inputs. The various program functions are grouped into windows, which are accessible from the Show menu on the main menu bar. Main Display The main display shows the calculated input voltage and raw A/D output code for each active channel. Although there are nine input channels, only certain configurations are allowed. Select any single channel or one of the scanning sequences from the Inputs menu. AIN 1-6 designates an analog input between the AIN1 pin and the AIN6 pin. CALOFF designates the signal between the CALOFF+ and CALOFF- pins. CALGAIN designates the signal between the CALGAIN+ and CALGAIN- pins. The EV kit software assumes that CALOFF+ and CALOFF- are grounded so that CALOFF measures zero volts. Similarly, the software assumes that CALGAIN+ is connected to REFIN+ and CALGAIN- is connected to REFIN- so that CALGAIN measures the reference voltage. These two points calibrate the code-to-voltage translation function performed in the software. 4 The MAX1400/MAX1402 automatically triggers its measurements, unless the FSYNC control bit is set. The evaluation kit software communicates with the MAX1400/MAX1402 at intervals determined by the Update Every combo box. To halt this automatic update, uncheck the Update Every checkbox or change the Update Every to a value between 100ms and 60000ms. Normally, the microcontroller collects new data as soon as it becomes available, by using the INT pin to trigger an interrupt service routine. If the INT pin is not used as an interrupt, then the MAX1400 must not be operated in free-running mode. Check or uncheck the Use INT Interrupt checkbox to configure the evaluation kit software. Configuration Tool The Configuration Tool controls parameters that apply to the entire EV kit. Like the other windows, the Configuration Tool can be activated from the Show menu of the main menu bar. The CLK control should match the external ceramic resonator or crystal that sets the master clock frequency. The VREF Reference Voltage control tells the software what the reference voltage is. This is used to convert the raw A/D output codes into the corresponding input voltage to speed user evaluation. The Data Rate control determines how often the MAX1402 performs a measurement. Some data rates provide 16-bit, noise-free resolution when used with the SINC3 filter (discussed below). The Filter Sync control can be used to inhibit the MAX1402 from performing its self-timed measurements. The Buffer Inputs checkbox enables the internal input buffers. The Burnout Test Currents checkbox enables two small (0.1µA) current sources to provide an input stimulus. When used with a transducer, these current sources can be used to verify that the transducer has not failed open or short circuit. At the bottom of the window, there are input voltage range selection buttons. These buttons configure all input channels for the same input voltage range. Although the MAX1400/MAX1402 can be operated with three different input ranges at the same time, the evaluation kit software only supports a single range for all channels. The digital filter on the MAX1402 can be configured for SINC3 or SINC1 operation, which affects the filter cutoff frequency. (SINC' means SIN(X) ÷ X, and SINC3 means (SIN(X) ÷ X)3.) The SINC3 filter is required for 16-bit accuracy. The SINC1 filter provides faster settling time with less accuracy. Alternatively, the raw modulator output can be driven out the DOUT pin; however, the EV kit software cannot read data from the MAX1402 in this mode. _______________________________________________________________________________________ MAX1402 Evaluation Kit/Evaluation System When Use CALOFF and CALGAIN for Calibration is checked, the software averages the raw A/D codes for the CALOFF and CALGAIN channels. The average is calculated as a weighted sum of the new data and the old average value. The Slower/Faster slide bar controls the weight of the new data vs. the weight of the old average. The EV kit software assumes that all three transfer function registers are set to the same value. This calibration affects only the displayed voltage, not the raw code numbers. The average CALOFF and CALGAIN code values are used as the endpoints of a linear interpolation, with CALOFF measuring zero volts and CALGAIN measuring VREF. The linear interpolation formula is as follows: Voltage = VREF ⋅ (Code − CALOFFcode) (CALGAINcode − CALOFFcode) ⋅ PGAgain Sampling Tool To sample data at full speed, select Sample from the main display menu, make your selections, and click on the Begin Sampling button. Sampling rate is controlled by the Configuration tool. Sample size is restricted to a power of two. Sample Size controls the number of samples collected on each selected channel. After the samples have been collected, the data is automatically uploaded to the host and is graphed. Once displayed, the data may be saved to a file. While the Sampling tool is open, the other windows are locked out. Close the Sampling tool by clicking the Close icon in the upper corner. Register Display Tool This tool displays all of the internal registers of the MAX1400/MAX1402. Modify any bit value by checking or unchecking its box. (The START bit and the zero bits in the special function register (SFR) cannot be modified). The Read All Registers button causes the software to read all of the MAX1400/MAX1402’s registers. (Not functional when the MDOUT or FULLPD bit is set.) Refer to Table 4, Guide to Register Bit Functions. Communications Register (COMMS) Setting the FSYNC control bit inhibits the MAX1400/ MAX1402 from performing its self-timed measurements. If FSYNC = 1 when it is time to perform a measurement, the MAX1400/MAX1402 simply skips that measurement. Thus, power line frequency rejection is not affected by the FSYNC bit. Setting the STDBY bit places the part in low-power standby mode. The serial interface and the CLK oscillator continue to operate. The part can be restored to normal operation by clearing the STDBY bit. Special Function Register (SFR) Setting the MDOUT bit causes the raw modulator output to be driven out the DOUT pin; however, the EV kit software cannot read data from the MAX1402 in this mode. Setting the FULLPD bit in the SFR register places the part in full power-down mode. The master oscillator does not run. To restore normal operation, click on the Reset menu item in the main display. This causes the 68HC16 software to pulse the MAX1402 RESET pin. Transfer Function Registers (TF1, TF2, TF3) The three Transfer Function registers (TF1, TF2, TF3) control how input voltage is mapped to code values. The transfer function registers control a programmable-gain amplifier (PGA) and an offset correction DAC. If U/B = 1, the transfer function maps unipolar voltages between 0V and VREF. If U/B = 0, then the transfer function maps bipolar voltages between -VREF and +VREF. Next, the PGA increases the code-per-volt processing gain, reducing the full-scale voltage range by a factor of 1, 2, 4, 8, 16, 32, 64, or 128. Finally, the offset correction DAC offsets the voltage range by up to ±7/6 of the full-scale voltage range. Input pins AIN1 and AIN2 are controlled by TF1. Input pins AIN3 and AIN4 are controlled by TF2. Input pin AIN5 is controlled by TF3. Input pin AIN6 is the analog common. When SCAN = 1, the CALOFF and CALGAIN channels are controlled by TF3. When SCAN = 0, the CALOFF and CALGAIN channels are controlled by one of the transfer function registers, as selected by the A1 and A0 bits. _______________________________________________________________________________________ 5 Evaluate: MAX1400/MAX1402 Calibration Tool The MAX1402 EV kit software can average the measurements 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 reference voltage (VREF). View the calibration tool by selecting it from the Show menu. The software automatically disables calibration if either of the calibration channels reports a code of 0 or 262143. This is to prevent erroneous calibration when using a transfer function that does not include both 0V and VREF. Evaluate: MAX1400/MAX1402 MAX1402 Evaluation Kit/Evaluation System For simplicity, the EV kit software assumes that all three transfer functions are configured alike. Detailed Description ________________________of Hardware U1, the MAX1402, is a multichannel, high-resolution A/D converter (refer to the MAX1402 data sheet). U2, the MAX6025, is a 2.5V reference (refer to the MAX6025 data sheet). Y1 contains a ceramic resonator and its load capacitors. R1–R6 together with C3–C8 form anti-aliasing input filters. R8 and C11 filter the digital power supply. The analog supply comes through filter R7/C10. Input Filtering The EV kit has an RC filter on each input with a time constant of approximately 0.01µs = 10ns (R = 100Ω, C = 100pF). When scanning between channels, the RC filter’s settling time may increase the acquisition time required for full accuracy. Evaluating the MAX1400 The MAX1400 can be evaluated by shorting across jumpers JU6 and JU7. The MAX1400 is exactly like the 6 MAX1402, except that the function of pins 5, 6, 7, and 8 is changed. Instead of the OUT1/OUT2 outputs and DS0/DS1 inputs, these pins are used to provide access to the analog signal between the multiplexer and the A/D converter. Tables 2 and 3 list the jumper functions and default settings. Refer to the MAX1400 data sheet for detailed information. Measuring Supply Current Supply current can be estimated by measuring the voltage across a series resistor. On the EV kit board, the MAX1402 draws all of its analog and digital power through R8, which is 10Ω. In addition, all analog supply current flows through R7, which is also 10Ω. Troubleshooting Problem: unacceptable amounts of noise in the signal. Collect a sample of 1024 measurements at a 60Hz data rate. Observe whether the problem is caused by 60Hz noise. Any AC-powered equipment connected to the analog signal ground can inject noise. Try replacing AC-powered DVMs with battery-powered DVMs. _______________________________________________________________________________________ MAX1402 Evaluation Kit/Evaluation System Evaluate: MAX1400/MAX1402 Table 2. Jumper Functions JUMPER STATE JU1 Closed* JU1 Open JU2 Closed* FUNCTION Use CalGain inputs for gain calibration (CALGAIN+ = REFIN+) Use CalGain inputs as general purpose signal inputs Use CalGain inputs for gain calibration (CALGAIN- = REFIN-) JU2 Open JU3 Closed* JU3 Open JU4 Closed* JU4 Open JU5 Closed* JU5 Open JU6 Closed Connects pin 5 to pin 7 MAX1402: pin 5 = digital input DS1, pin 7 = current source MAX1400: normal operation JU6 Open Disconnects pin 5 from pin 7 MAX1402: pin 5 = digital input DS1, pin 7 = current source MAX1400: insert filter between mux and A/D JU7 Closed Connects pin 6 to pin 8 MAX1402: pin 6 = digital input DS0, pin 8 = current source MAX1400: normal operation JU7 Open Disconnects pin 6 from pin 8 MAX1402: pin 6 = digital input DS0, pin 8 = current source MAX1400: insert filter between mux and A/D JU8 Closed* JU8 Open Use CalGain inputs as general purpose signal inputs Use CalOff inputs for offset calibration (CALOFF+ = GND) Use CalOff inputs as general purpose signal inputs Use CalOff inputs for offset calibration (CALOFF- = GND) Use CalOff inputs as general purpose signal inputs Use on-board reference U2 (REFIN- = GND) REFIN+ and REFIN- must be driven by an external reference Use on-board reference U2 (REFIN+ = 2.5V) REFIN+ and REFIN- must be driven by an external reference *Default trace on top layer of PCB. Table 3. Default Jumper Settings JUMPER STATE JU1 Closed* Use CalGain inputs for gain calibration (CALGAIN+ = REFIN+) FUNCTION JU2 Closed* Use CalGain inputs for gain calibration (CALGAIN- = REFIN-) JU3 Closed* Use CalOff inputs for offset calibration (CALOFF+ = GND) JU4 Closed* Use CalOff inputs for offset calibration (CALOFF- = GND) JU5 Closed* Use on-board reference U2 (REFIN- = GND) JU6 Open Disconnects pin 5 from pin 7 MAX1402: pin 5 = digital input DS1, pin 7 = current source MAX1400: insert filter between mux and A/D JU7 Open Disconnects pin 6 from pin 8 MAX1402: pin 6 = digital input DS0, pin 8 = current source MAX1400: insert filter between mux and A/D JU8 Closed* Use on-board reference U2 (REFIN+ = 2.5V) *Default trace on top layer of PCB. _______________________________________________________________________________________ 7 Evaluate: MAX1400/MAX1402 MAX1402 Evaluation Kit/Evaluation System Table 4. Guide to Register Bit Functions REGISTER COMMS BIT NAME 0/DRDY RS2–RS0 R/W GS1 GS2 SFR DESCRIPTION Start bit is zero; DIN pin must be 1 when idle Register select for subsequent operation Selects subsequent read or write operation RESET Causes software reset when set to 1 STDBY Activates standby power-down mode when set to 1 FSYNC Inhibits the A/D converter when set to 1 A1 Selects the active channel A0 Selects the active channel MF1 Selects the data output rate MF0 Selects the data output rate CLK Selects the CLKIN frequency FS1 Select the data output rate FS0 Select the data output rate FAST Selects SINC1 filter instead of SINC3 SCAN Enables the scanning sequences M1 Enables the CalGain channel M0 Enables the CalOff channel BUFF Enables the input buffers DIFF Selects differential input pairs BOUT Enables the transducer burn-out test currents IOUT Enables the OUT1 and OUT2 current sources (MAX1402 only) X2CLK Selects the CLKIN frequency MDOUT Changes the DOUT and INT pins to provide raw modulator output FULLPD Activates full power-down mode. Use hardware reset to restore normal operation. All other bits in SFR must be zero TF1, 2, 3 G2–G0 U/B DATA Selects unipolar or bipolar coding D3–D0 Select the offset correction DAC code; D3 = sign, D2–D0 = magnitude D17–D0 Raw code value DS1 Value of the DS1 input pin (MAX1402 only) DS0 Value of the DS0 input pin (MAX1402 only) CID2–CID0 8 Select the PGA Gain Channel identification tag _______________________________________________________________________________________ _______________________________________________________________________________________ AIN4 AIN3 AIN2 AIN1 GND OUT1 OUT2 DS0 DS1 J1-33 J1-34 AVDD JU7 C3 100pF R4 100Ω R3 100Ω R2 100Ω C6 100pF C5 100pF C4 100pF 14 13 12 11 10 9 8 7 6 5 4 OUT2 JU6 3 2 1 SMA OUT1 R1 100Ω 2 J2 AIN4 AIN3 AIN2 AIN1 AVDD AGND REFINN REFINP CALOFFN CALOFFP DGND DVDD DRDY DOUT DIN SCLK AIN5 AIN6 CALGAINN CALGAINP MAX1402 U1 IOUT1/ADCINN IOUT2/ADCINP DS0/MUXOUTN DS1/MUXOUTP RESET CS MCLKOUT MCLKIN 15 16 17 18 19 20 21 22 23 24 25 26 C12 OPEN C7 100pF C8 100pF R5 100Ω R6 100Ω R9 SHORT JU4 R10 SHORT R7 10Ω DVDD C9 100nF C13 OPEN INT MISO SCLK MOSI 28 27 J1-37 JU2 JU1 JU3 C10 0.1μF J1-29 J1-35 J1-36 AIN5 AIN6 AVDD DVDD C11 0.1μF GAIN- GAIN+ REF- REF+ OFFSET- OFFSET+ R8 10Ω JU5 JU8 2 1 VOUT VIN R L GND 3 MAX6025 U2 J1-8 J1-7 C15 2.2μF J1-1 J1-6 J1-5 J1-4 J1-3 J1-2 Evaluate: MAX1400/MAX1402 Y1 2.4576MHz 1 3 MAX1402 Evaluation Kit/Evaluation System Figure 1. MAX1402 EV Kit Schematic 9 Evaluate: MAX1400/MAX1402 MAX1402 Evaluation Kit/Evaluation System Figure 2. MAX1402 EV Kit Component Placement Guide—Component Side 10 ______________________________________________________________________________________ MAX1402 Evaluation Kit/Evaluation System Evaluate: MAX1400/MAX1402 Figure 3. MAX1402 EV Kit PCB Layout—Component Side ______________________________________________________________________________________ 11 Evaluate: MAX1400/MAX1402 MAX1402 Evaluation Kit/Evaluation System Figure 4. MAX1402 EV Kit PCB Layout—Solder Side Revision History Pages changed at Rev 2: Title change—all pages, 1, 2, 3, 4, 10, 11 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 Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2007 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc.