Datasheet

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General Description

The DS1086LPMB1 peripheral module provides the

necessary hardware to interface the DS1086L 3.3V

spread-spectrum EconOscillatorK to any system that

utilizes PmodK-compatible expansion ports configurable

for I

C communication. The DS1086L is a program-

mable clock generator that produces a spread-spectrum

(dithered) square-wave output of frequencies from

130kHz to 66.6MHz. The selectable dithered output

reduces radiated-emission peaks by dithering the

frequency 0.5%, 1%, 2%, 4%, or 8% below the

programmed frequency. The DS1086L has a power-down

mode and an output-enable control for power-sensitive

applications.

Refer to the DS1086L IC data sheet for detailed informa-

tion regarding operation of the IC.

Features

S User-Programmable 130kHz to 66.6MHz Square

Wave

S No External Timing Components Required

S 6-Pin Pmod-Compatible Connector (I

S Example Software Written in C for Portability

S Secondary Header Allows Daisy-Chaining of

Additional Modules on the I

C Bus

S Output Header Provides Access to Control Signals

for External Circuitry

S RoHS Compliant

S Proven PCB Layout

S Fully Assembled and Tested

DS1086LPMB1 Peripheral Module

For pricing, delivery, and ordering information, please contact Maxim Direct at

1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.

19-6318; Rev 0; 5/12

Ordering Information appears at end of data sheet.

DS1086LPMB1 Peripheral Module

EconOscillator is a trademark of Maxim Integrated Products,

Inc.

Pmod is a trademark of Digilent Inc.

Summary of content (8 pages)

PAGE 1
DS1086LPMB1 Peripheral Module General Description Features The DS1086LPMB1 peripheral module provides the necessary hardware to interface the DS1086L 3.3V spread-spectrum EconOscillatorK to any system that utilizes PmodK-compatible expansion ports configurable for I2C communication. The DS1086L is a programmable clock generator that produces a spread-spectrum (dithered) square-wave output of frequencies from 130kHz to 66.6MHz.
PAGE 2
DS1086LPMB1 Peripheral Module Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY J3 1 5-pin straight male header DESCRIPTION R1, R2, R8, R9, R10 5 4.7kI Q5% resistors (0603) R3, R4, R5 3 1kI Q5% resistors (0603) R6, R7 2 150kI Q5% resistors (0603) C1 1 0.01FF Q10%, 16V X7R ceramic capacitor (0603) Murata GRM188R71C103KA01D C2 1 0.1FF Q10%, 16V X7R ceramic capacitor (0603) Murata GRM188R71C104KA01D J1 1 12-pin (2 x 6) right-angle male header U1 1 3.
PAGE 3
DS1086LPMB1 Peripheral Module External Control Signals The IC implements pins to control output enable (OE), power-down (PDN), and dither enable (SPRD). These pins can be controlled either by the host (through the Pmod connector) or by external circuitry through the 5-pin output connector. In cases where one or more of these signals is driven from an external source, 1kI resistors R3, R4, and R5 limit the current to/from the host.
PAGE 4
DS1086LPMB1 Peripheral Module VCC VCC R1 4.7k R2 4.7k PDN SPRD R3 R5 R6 R7 1k 1k 150 150 J1 SCL SDA GND VCC 1 2 3 4 5 6 R4 7 8 9 10 11 12 1k OE J2 SCL SDA GND VCC 1 2 3 4 C1 R9 4.7k R10 4.7k C2 3 VCC U1 7 8 5 6 SCL OUT 1 OUT OE PDN SPRD J3 GND 4 2 SDA 0.1uF DS1086L VCC R8 4.7k VCC GND GND VCC 0.01uF VCC VCC 5 6 7 8 GND SPRD 1 2 3 4 5 PDN OE Figure 1.
PAGE 5
DS1086LPMB1 Peripheral Module Figure 2. DS1086LPMB11 Peripheral Module Component Placement Guide—Component Side Figure 3. DS1086LPMB11 Peripheral Module PCB Layout—Component Side Figure 4.
PAGE 6
DS1086LPMB1 Peripheral Module Figure 5. DS1086LPMB11 Peripheral Module PCB Layout—Inner Layer 2 (Power) Figure 6. DS1086LPMB11 Peripheral Module PCB Layout—Solder Side Figure 7.
PAGE 7
DS1086LPMB1 Peripheral Module Ordering Information PART TYPE DS1086LPMB1# Module #Denotes RoHS compliant.
PAGE 8
DS1086LPMB1 Peripheral Module Revision History REVISION NUMBER REVISION DATE 0 5/12 DESCRIPTION Initial release PAGES CHANGED — Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time.