MCP4725EV Microchip Technology, MCP4725EV Datasheet

BOARD EVAL FOR MCP4725

MCP4725EV

Manufacturer Part Number
MCP4725EV
Description
BOARD EVAL FOR MCP4725
Manufacturer
Microchip Technology
Datasheets

Specifications of MCP4725EV

Number Of Dac's
1
Number Of Bits
12
Outputs And Type
1, Single Ended
Sampling Rate (per Second)
100k ~ 3.4M
Data Interface
I²C
Settling Time
6µs
Dac Type
Voltage
Voltage Supply Source
Single
Operating Temperature
-40°C ~ 125°C
Utilized Ic / Part
MCP4725
Processor To Be Evaluated
MCP4725
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
MCP4725
SOT-23-6
Evaluation Board
User’s Guide
© 2007 Microchip Technology Inc.
DS51669A

Related parts for MCP4725EV

MCP4725EV Summary of contents

Page 1

... Microchip Technology Inc. MCP4725 SOT-23-6 Evaluation Board User’s Guide DS51669A ...

Page 2

... Mate, PowerTool, REAL ICE, rfLAB, Select Mode, Smart Serial, SmartTel, Total Endurance, UNI/O, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. ...

Page 3

... A.1 Introduction .................................................................................................. 21 A.2 Board - Schematic ....................................................................................... 22 A.3 Board - Top Layer ........................................................................................ 23 A.4 Board - Top Silk Layer ................................................................................. 24 A.5 Board - Bottom Layer ................................................................................... 25 Appendix B. Bill Of Materials (BOM) .......................................................................... 27 Worldwide Sales and Service .................................................................................... 28 © 2007 Microchip Technology Inc. MCP4725 SOT-23-6 EVALUATION BOARD USER’S GUIDE Table of Contents DS51669A-page iii ...

Page 4

... MCP4725 SOT-23-6 Evaluation Board User’s Guide NOTES: DS51669A-page iv © 2007 Microchip Technology Inc. ...

Page 5

... Appendix A. “Schematics and Board Layouts” – shows the schematic and lay- out diagrams for the MCP4725 SOT-23-6 Evaluation Board. • Appendix B. “Bill Of Materials (BOM)” – lists the parts used to build the MCP4725 SOT-23-6 Evaluation Board. © 2007 Microchip Technology Inc. MCP4725 SOT-23-6 EVALUATION BOARD USER’S GUIDE Preface NOTICE TO CUSTOMERS ® ...

Page 6

... Optional arguments mcc18 [options] file [options] Choice of mutually exclusive errorlevel {0|1} arguments selection Replaces repeated text var_name [, var_name...] Represents code supplied by void main (void) user { ... } © 2007 Microchip Technology Inc. Examples ® IDE User’s Guide ...

Page 7

... Customers should contact their distributor, representative or field application engineer for support. Local sales offices are also available to help customers. A listing of sales offices and locations is included in the back of this document. Technical support is available through the web site at: http://support.microchip.com © 2007 Microchip Technology Inc. Preface DS51669A-page 3 ...

Page 8

... MCP4725 SOT-23-6 Evaluation Board User’s Guide DOCUMENT REVISION HISTORY Revision A (October 2007) • Initial Release of this Document. DS51669A-page 4 © 2007 Microchip Technology Inc. ...

Page 9

... The MCP4725 SOT-23-6 Evaluation Board also has footprints for additional pull-up resistors (in parallel with the R with their own components. © 2007 Microchip Technology Inc. MCP4725 SOT-23-6 EVALUATION BOARD USER’S GUIDE 2 C loading resistors ...

Page 10

... JP1: A0 selection jumper: Picture shown here is connected to the GND ( Ground Terminal Analog Output Terminal (V ) OUT V DD FIGURE 1-1: MCP4725 SOT-23-6 Evaluation Board. DS51669A-page 6 MCP4725 in SOT-23-6 package J1 Connector Terminal R1 (Pull-up Resistor for SDA) R3 (Pull-up Resistor for SCL) © 2007 Microchip Technology Inc. ...

Page 11

... SOT-23-6 Evaluation Board. PICkit Serial Analyzer USB Cable: Connected between the PicKit Serial analyzer and Personal Computer. FIGURE 1-2: MCP4725 SOT-23-6 Evaluation Board Test Set Up. © 2007 Microchip Technology Inc. Quick Start Instructions and GND terminals on the MCP4725 OUT Figure 1-2 shows the connection example ...

Page 12

... Run the PICkit Serial PC Software: It will open up the following graphic user inter- face (GUI). Click Next > and follow the instructions: 4. Select the I2C Master option radio button for the Communication Mode type and click the Next > button. DS51669A-page 8 © 2007 Microchip Technology Inc. ...

Page 13

... MHz, but the current version of the PICkit Serial Analyzer only supports the I 6. Select No on Device Pullups and click the Next > button. Note: The MCP4725 SOT-23-6 Evaluation Board has its own pull-up resistors © 2007 Microchip Technology Inc. Quick Start Instructions 2 C bus data rate up to 400 kHz. ...

Page 14

... In this case, you have to remove the JP2 jumper on the board and provide the V DS51669A-page 10 Voltage Source option for the MCP4725 SOT-23-6 Evaluation the Next > button. from the PICkit Serial Analyzer voltage through the the V terminal terminal on the DD © 2007 Microchip Technology Inc. ...

Page 15

... Click the OK button. You have done all PICkit Serial Analyzer Configuration Set-up. You are now ready to program the MCP4725 device using the PICkit Serial Analyzer. © 2007 Microchip Technology Inc. Quick Start Instructions DS51669A-page 11 ...

Page 16

... MCP4725 SOT-23-6 Evaluation Board User’s Guide 1.3.2 Creating Script File to program the DAC Register and EEPROM Data 1. From the Communications tab, select the Script option and go to the Script Builder. DS51669A-page 12 © 2007 Microchip Technology Inc. ...

Page 17

... You can choose any data you want for the 2nd and 3rd write bytes. If you use the above write data, the MPC4725 device will output: V OUT © 2007 Microchip Technology Inc. Quick Start Instructions -----------> This means there are three bytes to send -----------> 1st Write Byte: Address byte = 1100-0000 -----------> ...

Page 18

... MCP4725 SOT-23-6 Evaluation Board User’s Guide 3. Programming DAC Register (Fast Mode) a) Change 2nd and 3rd data bytes you want in the Script Detail. b) Click Execute Script Menu item. c) The device gives an analog output voltage (V the board. DS51669A-page the VOUT terminal on OUT © 2007 Microchip Technology Inc. ...

Page 19

... I2CSTART I2CWRTBYT I2CSTOP © 2007 Microchip Technology Inc. Quick Start Instructions -----------> This means Master will send four bytes -----------> 1st Write Byte: Address byte = 1100-0000 -----------> 2nd Write Byte: 0110-0000 -----------> 3rd Write Byte: 1000-0000 -----------> 4th Write Byte: 0000-0000 1st Write Byte 2nd Write Byte ...

Page 20

... EEPROM. The data in the EEPROM is non-volatile. To check this non-volatile data, you can remove the V back up the V DD terminal. DS51669A-page 16 from the MCP4725 SOT-23-6 Evaluation Board once, and bring DD again. You will see the same analog voltage output at the V OUT © 2007 Microchip Technology Inc. ...

Page 21

... Reading the DAC Register Data using the PICkit Serial Analyzer This experiment can be done in two steps: (a) Write the DAC Register with Fast Mode Command. (b) Send Read Command and see the results on the PICkit Serial Transactions page. © 2007 Microchip Technology Inc. Quick Start Instructions Requesting 3 Bytes Written Data ...

Page 22

... Write the DAC Register and EEPROM data using a write command. (b) Send Read Command (Request 5 bytes) and see the results on the PICkit Serial Transactions page. DS51669A-page 18 Requesting 5 Bytes DAC EEPROM Data Register Data Written Data using a Write Command Reading Data using a Read Command © 2007 Microchip Technology Inc. ...

Page 23

... FIGURE 1-3: MCP4725 Device Address Byte. DAC Output Start 0xC0 ACK 0 0 PD1 PD0 D11 D10 D9 D8 Address Byte: 0x08 when FIGURE 1-4: Fast Mode (Write Command) for V © 2007 Microchip Technology Inc. Quick Start Instructions Address Byte * pin is Grounded = pin is tied ...

Page 24

... Start 0xC0 ACK When FIGURE 1-5: Write Command Example for EEPROM and DAC Register for 5V. REF DS51669A-page 20 × × REF N = ------------------------- - = -------------------- - 4096 4096 X PD1 PD0 X ACK D11 D10 D9 0x60 0x00 = 2. ACK 11 0x08 = ACK STOP = 2.5V when OUT © 2007 Microchip Technology Inc. ...

Page 25

... This appendix contains the following schematics and layouts for the MCP4725 SOT-23-6 Evaluation Board: • Board – Schematic • Board – Top Layer • Board – Top Silk Layer • Board – Bottom Metal Layer © 2007 Microchip Technology Inc. MCP4725 SOT-23-6 EVALUATION BOARD USER’S GUIDE DS51669A-page 21 ...

Page 26

... MCP4725 SOT-23-6 Evaluation Board User’s Guide A.2 BOARD - SCHEMATIC DS51669A-page 22 © 2007 Microchip Technology Inc. ...

Page 27

... A.3 BOARD - TOP LAYER © 2007 Microchip Technology Inc. Schematics and Board Layouts DS51669A-page 23 ...

Page 28

... MCP4725 SOT-23-6 Evaluation Board User’s Guide A.4 BOARD - TOP SILK LAYER DS51669A-page 24 © 2007 Microchip Technology Inc. ...

Page 29

... A.5 BOARD - BOTTOM LAYER © 2007 Microchip Technology Inc. Schematics and Board Layouts DS51669A-page 25 ...

Page 30

... MCP4725 SOT-23-6 Evaluation Board User’s Guide NOTES: DS51669A-page 26 © 2007 Microchip Technology Inc. ...

Page 31

... Not Populated 1 U1 MCP4725_SOT-23-6 Note 1: The components listed in this Bill of Materials are representative of the PCB assembly. The released BOM used in manufacturing uses all RoHS-compliant components. © 2007 Microchip Technology Inc. MCP4725 SOT-23-6 EVALUATION BOARD USER’S GUIDE Description Manufacturer — Keystone Electronics ...

Page 32

... Fax: 886-3-572-6459 Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 © 2007 Microchip Technology Inc. EUROPE Austria - Wels Tel: 43-7242-2244-39 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 France - Paris Tel: 33-1-69-53-63-20 ...

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