Datasheet

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General Description

The MAX5825PMB1 peripheral module provides the nec-

essary hardware to interface the MAX5825 8-channel DAC

to any system that utilizes PmodK-compatible expansion

ports configurable for I

C communication. The IC features

eight independent 12-bit accurate internally buffered

voltage-output DAC channels. The IC also features an

internal reference that is selectable between 2.048V,

2.500V, and 4.096V (4.096V reference operation is not

supported with a standard 3.3V Pmod-port power supply).

Features

S Eight High-Accuracy DAC Channels

S 12-Bit Accuracy without Adjustment

S Precision Voltage Reference Internal to the IC

S Provision for Optional External Reference Input

S Jumper-Selectable I

C Address Setting

S 6-Pin Pmod-Compatible Connector (I

S Secondary Header Allows Daisy-Chaining of

Additional Modules on the I

C Bus

S Example Software Written in C for Portability

S RoHS Compliant

S Proven PCB Layout

S Fully Assembled and Tested

MAX5825PMB1 Peripheral Module

_________________________________________________________________ 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.

MAX5825PMB1 Peripheral Module

19-6313; Rev 0; 5/12

Ordering Information appears at end of data sheet.

Pmod is a trademark of Digilent Inc.

Summary of content (8 pages)

PAGE 1
9-6313; Rev 0; 5/12 MAX5825PMB1 Peripheral Module General Description The MAX5825PMB1 peripheral module provides the necessary hardware to interface the MAX5825 8-channel DAC to any system that utilizes PmodK-compatible expansion ports configurable for I2C communication. The IC features eight independent 12-bit accurate internally buffered voltage-output DAC channels. The IC also features an internal reference that is selectable between 2.048V, 2.500V, and 4.096V (4.
PAGE 2
MAX5825PMB1 Peripheral Module Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION 1 8-pin (2 x 4) straight male header C1 1 10FF Q10%, 10V X5R ceramic capacitor (0603) TDK C2012X5R1A106K/1.25 J2 J3 1 14-pin (2 x 7) straight male header 2 3-pin straight male headers 1 2.2FF Q10%, 10V X5R ceramic capacitor (0603) TDK C1608X5R1A225K/0.80 JP1, JP2 C2 R1–R4 4 150I Q5% resistors (0603) R5–R9 5 4.7kI Q5% resistors (0603) 2 0.
PAGE 3
MAX5825PMB1 Peripheral Module I2C Addressing Options The I2C slave address for the IC can be one of nine different values, depending on the settings on jumpers JP1 and JP2. Table 3 lists the settings of those jumpers and the corresponding values of the slave address A[3:0]. Refer to the MAX5823/MAX5824/MAX5825 IC data sheet for more information.
PAGE 4
MAX5825PMB1 Peripheral Module R1 R2 R3 R4 1 2 3 4 5 6 I2C Expansion Connector 150 LDAC 150 IRQ 150 SCL 150 SDA GND R5 4.7k J2 1 2 3 4 5 6 7 8 F1 EMIFILT 1 R6 4.7k 3 GND C2 U1 VDD R7 4.7k R9 4.7k R8 4.7k LK1 LINKB VDD Do Not Install R10 100k GND R11 10 11 VDD Select LDAC Source 0 GND 19 LDAC 18 SDA 15 SCL 14 CLR 17 IRQ 16 20 13 VDD GND 1 2 3 MAX5825 GND C3 0.1uF VDD VDDIO GND DAC0 DAC1 DAC2 12 JP1 2.2uF VDD C4 0.
PAGE 5
MAX5825PMB1 Peripheral Module Figure 2. MAX5825PMB11 Peripheral Module Component Placement Guide—Component Side Figure 3. MAX5825PMB11 Peripheral Module PCB Layout—Component Side Figure 4.
PAGE 6
MAX5825PMB1 Peripheral Module Figure 5. MAX5825PMB11 Peripheral Module PCB Layout—Inner Layer 2 (Power) Figure 6. MAX5825PMB11 Peripheral Module PCB Layout—Solder Side Figure 7.
PAGE 7
MAX5825PMB1 Peripheral Module Ordering Information PART TYPE MAX5825PMB1# Peripheral Module #Denotes RoHS compliant.
PAGE 8
MAX5825PMB1 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.