19-6321; Rev 0; 5/12 MAX5216PMB1 Peripheral Module General Description The MAX5216PMB1 peripheral module provides the necessary hardware to interface the MAX5216 16-bit DAC to any system that utilizes PmodK-compatible expansion ports configurable for SPI communication. The IC is a single-channel, low-power, buffered voltage-output DAC. The reference voltage for the DAC is provided by a 2.5V output version of the MAX6029 voltage reference (0.15% initial accuracy, 30ppm/°C). Digital noise is minimized by having SPI input buffers powered down after completion of each serial input frame. Refer to the MAX5216 IC data sheet for detailed information regarding operation of the IC. Ordering Information appears at end of data sheet. Features S High-Accuracy 16-Bit DAC with On-Board Precision Voltage Reference S Low Gain and Offset Errors S Buffered Voltage Output Directly Drives 10kI Loads S Optional External Voltage Reference (Jumper Selectable) S 6-Pin Pmod-Compatible Connector (SPI) S Example Software Written in C for Portability S RoHS Compliant S Proven PCB Layout S Fully Assembled and Tested MAX5216PMB1 Peripheral Module Pmod is a trademark of Digilent Inc. __________________________________________________________________ Maxim Integrated Products 1 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. MAX5216PMB1 Peripheral Module Component List DESIGNATION C1 C2 C3, C4, C5 F1 J1 QTY 1 1 3 1 1 DESCRIPTION DESIGNATION QTY J2 1 4-pin straight male header 10FF Q10%, 10V X5R ceramic capacitor (0603) TDK C2012X5R1A106K/1.25 DESCRIPTION JP1 1 3-pin straight male header R1, R2, R3 3 150I Q5% resistors (0603) 1FF Q10%, 10V X7R ceramic capacitor (0603) TDK C1608X7R1A105K R4 1 4.7kI Q5% resistor (0603) U1 1 0.1FF Q10%, 16V X7R ceramic capacitors (0603) Murata GRM188R71C104KA01D 16-bit buffered single DAC (8 FMAXM) Maxim MAX5216GUA+ U2 1 Ultra-precision series voltage reference (5 SOT23) Maxim MAX6029EUK25+ — 1 Shorting jumper — 1 PCB: EPCB5216PM1 4.7FF EMI filter (3-terminal capacitor) Murata NFM21PC475B1A3D 6-pin right-angle male header Component Suppliers SUPPLIER PHONE WEBSITE Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com TDK Corp. 847-803-6100 www.component.tdk.com Note: Indicate that you are using the MAX5216PMB1 when contacting these component suppliers. Detailed Description SPI Interface Table 1. Connector J1 (2-Wire Communication) The MAX5216PMB1 peripheral module can plug directly into a Pmod-compatible port (configured for SPI) through connector J1. For information on the SPI protocol, refer to the MAX5214/MAX5216 IC data sheet. PIN SIGNAL 1 SS 2 MOSI MAX5216 serial-data input J1 provides connection of the module to the Pmod host. See Table 1. 3 N.C. Not connected 4 SCK MAX5216 serial-clock input Connector J2 provides connection to the IC pins. 5 GND Ground Jumper JP1 allows the user to select between reference voltages for the DAC IC (see Table 3). 6 VCC Power supply Reference Voltage The MAX5216PMB1 peripheral module contains a MAX6029 precision voltage reference for the REF input of the IC. The MAX6029 outputs a 2.5V reference. Software and FPGA code Example software and drivers are available that execute directly without modification on several FPGA development boards that support an integrated or synthesized microprocessor. These boards include the Digilent DESCRIPTION Chip enable. Assert low to enable the SPI interface. Table 2. Connector J2 PIN SIGNAL 1 DACOUT 2 CLR 3 VREFIN 4 GND DESCRIPTION Buffered DAC output Active-low asynchronous digital-clear input. Drive low to clear contents of the DAC registers and set the DAC output to zero. DAC reference voltage input Ground µMAX is a registered trademark of Maxim Integrated Products, Inc. __________________________________________________________________ Maxim Integrated Products 2 MAX5216PMB1 Peripheral Module Nexys 3, Avnet LX9, and Avnet ZEDBoard, although other platforms can be added over time. Maxim provides complete Xilinx ISE projects containing HDL, Platform Studio, and SDK projects. In addition, a synthesized bit stream, ready for FPGA download, is provided for the demonstration application. The software project (for the SDK) contains several source files intended to accelerate customer evaluation and design. These include a base application (maximModules.c) that demonstrates module functionality and uses an API interface (maximDeviceSpecificUtilities.c) to set and access Maxim device functions within a specific module. Table 3. Jumper JP1 (Reference Voltage Selection) The source code is written in standard ANSI C format, and all API documentation including theory/operation, register description, and function prototypes are documented in the API interface file (maximDeviceSpecificUtilities.h & .c). PINS SELECTION 2-1 REF provided by on-board MAX6029EUK25 voltage reference 2-3 REF provided by user through pin 3 of connector J2 J1 R1 R2 150 150 SS MOSI R3 150 SCK GND 1 F1 EMIFILT 3 VCC C1 10uF 2 1 2 3 4 5 6 The complete software kit is available for download www.maxim-ic.com. Quick start instructions are also available as a separate document. VCC GND GND R4 4.7k C2 1uF C3 0.1uF VCC U1 1 VCC U2 IN C4 0.1uF GND 5 OUT 2 3 4 MOSI 4 SCK 3 SS 2 GND 5 DIN GND OUT 6 DACOUT J2 SCLK CLR VREFIN CS CLR REF 1 GND 1 2 3 4 N.C. N.C. VCC MAX6029EUK25+ GND 7 8 VDD GND C5 0.1uF GND MAX5216GUA+ JP1 1 2 3 Select VREF source Figure 1. MAX5216PMB1 Peripheral Module Schematic __________________________________________________________________ Maxim Integrated Products 3 MAX5216PMB1 Peripheral Module Figure 2. MAX5216PMB1 Peripheral Module Component Placement Guide—Component Side Figure 3. MAX5216PMB1 Peripheral Module PCB Layout—Component Side Figure 4. MAX5216PMB1 Peripheral Module PCB Layout—Inner Layer 1 (Ground) __________________________________________________________________ Maxim Integrated Products 4 MAX5216PMB1 Peripheral Module Figure 5. MAX5216PMB1 Peripheral Module PCB Layout—Inner Layer 2 (Power) Figure 6. MAX5216PMB1 Peripheral Module PCB Layout—Solder Side Figure 7. MAX5216PMB1 Peripheral Module Component Placement Guide—Solder Side __________________________________________________________________ Maxim Integrated Products 5 MAX5216PMB1 Peripheral Module Ordering Information PART TYPE MAX5216PMB1# Peripheral Module #Denotes RoHS compliant. __________________________________________________________________ Maxim Integrated Products 6 MAX5216PMB1 Peripheral Module Revision History REVISION NUMBER REVISION DATE 0 5/12 DESCRIPTION Initial release PAGES CHANGED — 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 © 2012 Maxim Integrated Products 7 Maxim is a registered trademark of Maxim Integrated Products, Inc.