View MAX1068_254290.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

19-2994; Rev 0; 9/03
MAX1168 Evaluation Kit/Evaluation System
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 (C) 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 C-based systems. o Proven PC Board Layout o Windows(R) 95/98/2000/XP-Compatible Evaluation Software o Convenient On-Board Test Points o Fully Assembled and Tested
Features
Evaluates: MAX1068/MAX1168
MAX1168EVC16 System Component List
PART MAX1168EVKIT 68HC16MODULE-DIP QTY 1 1 DESCRIPTION MAX1168 EV Kit 68HC16 C Module
Ordering Information
PART MAX1168EVKIT MAX1168EVC16 IC PACKAGE 24 QSOP 24 QSOP INTERFACE TYPE User-supplied Windows software
Component Suppliers
SUPPLIER Fairchild Semiconductor TDK PHONE 888-522-5372 847-803-6100 WEBSITE www.fairchildsemi.com www.component.tdk.com
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 C module and the EV kit. If the Windows software is not required, the EV kit board can be purchased by itself, without the C module. Note: To evaluate the MAX1068, request a free sample of the MAX1068_CEG when ordering the MAX1168 EV kit.
Note: Please indicate you are using the MAX1168 when contacting these component suppliers.
MAX1168EVKIT Component List
DESIGNATION C1-C18, C21, C22 QTY 20 DESCRIPTION 0.1F 10%, 16V X7R ceramic capacitors (0603) TDK C1608X7R1C104KT 10F 20%, 16V X5R ceramic capacitors (1210) TDK C3225X5R1C106M 1F 20%, 10V X5R ceramic capacitor (0805) TDK C2012X5R1A105M 100pF ceramic capacitors (0603) TDK C1608C0G1H101J 0.22F 10%, 10V X7R ceramic capacitors (0603) TDK C1608X7R1A224K Surface-mount ferrite beads (0603) TDK MMZ1608B601C 100 5% resistors (0603) DESIGNATION R9-R16 R17-R24 U1 C19, C20 2 U2 U3-U10 J1 C24-C31 8 TB0 JU1 JU2 None None None QTY 8 8 1 1 8 1 1 1 1 2 1 1 DESCRIPTION 4.7k 5% resistors (0603) 10 5% resistors (0603) 16-bit ADC (24-pin QSOP) Maxim MAX1168CCEG Logic buffer (5-SOT23) Fairchild Semiconductor NC7SZ125 Op amps (SOT23-5) Maxim MAX4430EUK 2 x 20 right-angle female connector Samtec SSW-120-02-S-D-RA 2-circuit terminal block 2-pin header 3-pin header Shunts PC board, MAX1168 EV kit MAX1168 EV kit software, CD-ROM
C23
1
C32-C39
8
FB1, FB2 R1-R8
2 8
Windows 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 Maxim's website at www.maxim-ic.com.
MAX1168 Evaluation Kit/Evaluation System Evaluates: MAX1068/MAX1168
MAX1168EV Kit Files
FILE NAME INSTALL.EXE MAX1168.EXE HELPFILE.HTM UNINST.INI KIT1168.C16 FUNCTION Installs the EV kit files on your computer Application program MAX1168 EV kit help file Uninstalls the EV kit software Software loaded into the 68HC16 C
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 C 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 C 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.
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 C module's SW1 switch is in the OFF position. 5) Connect the +8V to +20V power supply to the C module's terminal block (J2), located next to the ON/OFF switch (SW1) along the top edge of the C module. Observe the polarity marked on the board.
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 SPITM 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 Evaluates: MAX1068/MAX1168
Table 1. Software Control Descriptions
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
MAX1168 Evaluation Kit/Evaluation System Evaluates: MAX1068/MAX1168
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 C 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.
Table 2. DSP Frame Sync Receive Input (DSPR)
JUMPER SHUNT POSITION ON* JU1 OFF DESCRIPTION DSP mode disable DSP mode enable (the supplied Windows software does not support this mode)
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 C module for use with an existing C. 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 C 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.
*Default configuration.
Table 3. Data Bit Transfer Select Input (DSEL)
JUMPER SHUNT POSITION 1-2 2-3* DESCRIPTION 16-bit-wide data-transfer mode (the supplied Windows software does not support this mode) 8-bit-wide data-transfer mode
JU2
*Default configuration.
Caution: Do not connect an external controller to the DSEL pad while a shunt is on jumper JU2.
4
_______________________________________________________________________________________
MAX1168 Evaluation Kit/Evaluation System Evaluates: MAX1068/MAX1168
Figure 1. MAX1168 Evaluation Software's Main Window
_______________________________________________________________________________________
5
Evaluates: MAX1068/MAX1168
2 x 20 RIGHT ANGLE FEMALE CONNECTOR
Figure 2. MAX1168 EV Kit Schematic
AVDD J1-1 AVDD C1 0.1F J1-3 J1-4 4 5 U3 1 7 J1-6 JU1 DSPR 8 AIN1 J1-9 J1-26 J1-25 J1-24 J1-23 J1-22 J1-21 J1-20 J1-19 J1-18 J1-10 J1-11 J1-12 J1-13 J1-14 J1-15 J1-16 J1-17 SCLK DIN J1-36 DOUT UCVDD 2 A U2 NC7SZ125 J1-38 1 DE TB0-1 C23 1F 16 C21 0.1F TB0-2 TERMINAL BLOCK TB0 3 GND 4 Y VCC 5 C22 0.1F 4 SCLK J1-37 J1-35 DIN R5 100 11 AIN4 DOUT CS 3 5 DSEL 3 EOC DSPX 2 JU2 1 2 DESL J1-8 J1-27 TB1 TP1-1 TP1-2 TP1-3 TP1-4 TP1-5 TP1-6 CS SCLK DIN DOUT DVDD 1 J1-7 J1-28 DSPR J1-29 UCVDD J1-30 J1-31 AVDD C3 0.1F R2 100 C24 100pF AVDD J1-5 J1-32 3 MAX4430 C2 0.1F 4 5 U4 1 C25 100pF R3 100 9 AIN2 EOC DSPX U1 10 AIN3 23 6 3 AVDD C5 0.1F VEE MAX4430 C4 0.1F 19 AIN0 AVDD 22 DVDD R1 100 J1-33 J1-34 C19 10F C17 0.1F FB1 J1-2 J1-39 C18 0.1F C20 10F J1-40 DVDD J1 4 5 U5 1 AVDD C7 0.1F R4 100 C26 100pF 3 MAX4430 C6 0.1F 4 5 U6 1 3
MAX1168 Evaluation Kit/Evaluation System
6
MAX1168
AVDD C9 0.1F VEE MAX4430 C8 0.1F C27 100pF 4 5 U7 1 AVDD C11 0.1F CS R6 100 12 AIN5 REF 15 20 4 5 U8 1 C29 100pF REFCAP R7 100 13 AIN6 VEE VEE R8 100 14 AIN7 AGND AGND 18 17 FB2 DGND 21 N.C. 24 GND 3 AVDD C13 0.1F 4 5 U9 1 AVDD C15 0.1F 4 5 U10 1 C31 100pF 3 VEE MAX4430 C16 0.1F C30 100pF 3 MAX4430 C14 0.1F VEE MAX4430 C12 0.1F C28 100pF 3 MAX4430 C10 0.1F
AIN0
R17 10
C32 0.22F
R9 4.7k
VEE
AIN1
R18 10
C33 0.22F
R10 4.7k
AIN2
R19 10
C34 0.22F
R11 4.7k
VEE
AIN3
R20 10
C35 0.22F
R12 4.7k
AIN4
R21 10
C36 0.22F
R13 4.7k
VEE
AIN5
R22 10
C37 0.22F
R14 4.7k
AIN6
R23 10
C38 0.22F
R15 4.7k
VEE
AIN7
R24 10
_______________________________________________________________________________________
C39 0.22F
R16 4.7k
MAX1168 Evaluation Kit/Evaluation System Evaluates: MAX1068/MAX1168
Figure 3. MAX1168 EV Kit Component Placement Guide--Component Side
_______________________________________________________________________________________
7
MAX1168 Evaluation Kit/Evaluation System Evaluates: MAX1068/MAX1168
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
MAX1168 Evaluation Kit/Evaluation System Evaluates: MAX1068/MAX1168
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 (c) 2003 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

▲Up To Search▲

Price & Availability of MAX1068

	To Download MAX1068 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .