Datasheet

Introduction

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1 Introduction

1.1 Overview

The EVM provides several programmable output clock sources. Four SMA outputs (J1, J4, J6 and J17)

are configured as CMOS outputs. Configure the two other output pairs (J2, J3) and (J7, J15) for CMOS,

LVDS, or LVPECL output levels.

An option for installing a commercial-quality voltage-controlled crystal oscillator (VCXO) is available on the

board, providing a known reference point for evaluation of the device performance in dual-PLL mode.

The board features an on-board 10-MHz reference oscillator for internal clock reference and output

reference source.

The on-board EEPROM programs the LMK04806, providing several factory pre-programmed settings. The

board provides 491.52-, 245.76-, 122.88-, and 61.44-MHz outputs after power up (or after pushing the

RESET button) if the four dip switches are in their default 0000 position (all up). A software GUI is also

provided allowing custom configuration of the LMK04806.

The EVM supports any of the four devices offered in the LMK04800 family with the default device being

the LMK04806.

Table 1. Available LMK04800 Family Devices

Device VCO Frequency

LMK04803B 1840 to 2030 MHz

LMK04805B 2148 to 2370 MHz

LMK04806B

(1)

2370 to 2600 MHz

LMK04808B 2750 to 3072 MHz

(1)

Board default installed device

Figure 1 shows a block diagram of the EVM.

Figure 1. TSW4806EVM Block Diagram

TSW4806EVM SLAU454–July 2012

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