MICRF600 datasheet, PDF - EEWORLD Datasheet

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MICRF600: DescriptionIC RF MOD 868-870MHZ 11.5X14.1MM; Categoryunclassified; File Size439KB，21 Pages; ManufacturerMicrochip; Websitehttps://www.microchip.com

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MICRF600 Overview

IC RF MOD 868-870MHZ 11.5X14.1MM

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MICRF600

902-928MHz ISM Band Transceiver

Module

General Description

The MICRF600 is a self-contained frequency shift keying (FSK)

transceiver module, intended for use in half-duplex, bidirectional

RF links. The multi-channeled FSK transceiver module is intended

for UHF radio equipment in compliance with the North American

Federal Communications Commission (FCC) part 15.247 and

249.

The transmitter consists of a fully programmable PLL frequency

synthesizer and power amplifier. The frequency synthesizer

consists of a voltage-controlled oscillator (VCO), a crystal

oscillator, dual modulus prescaler, programmable frequency

dividers, and a phase-detector. The output power of the power

amplifier can be programmed to seven levels. A lock-detect circuit

detects when the PLL is in lock.

In receive mode, the PLL synthesizer generates the local oscillator

(LO) signal. The N, M, and A values that give the LO frequency

are stored in the N0, M0, and A0 registers.

The receiver is a zero intermediate frequency (IF) type that makes

channel filtering possible with low-power, integrated low-pass

filters. The receiver consists of a low noise amplifier (LNA) that

drives a quadrature mix pair. The mixer outputs feed two identical

signal channels in phase quadrature. Each channel includes a

pre-amplifier, a third order Sallen-Key RC low-pass filter that

protects the following switched-capacitor filter from strong adjacent

channel signals, and a limiter. The main channel filter is a

switched-capacitor implementation of a six-pole elliptic low pass

filter. The cut-off frequency of the Sallen-Key RC filter can be

programmed to four different frequencies: 100kHz, 150kHz,

230kHz, and 350kHz. The I and Q channel outputs are

demodulated and produce a digital data output. The demodulator

detects the relative phase of the I and the Q channel signal. If the I

channel signal lags behind the Q channel, the FSK tone

frequency is above the LO frequency (data “1”). If the I channel

leads the Q channel, then the FSK tone is below the LO

frequency (data “0”). The output of the receiver is available on the

DataIXO pin. A receive signal strength indicator (RSSI) circuit

indicates the received signal level. All support documentation can

be found on Micrel’s web site at: www.micrel.com.

RadioWire

Module

Features

•

“Drop in” RF solution

Small size: 11.5x14.1mm

RF tested

FCC Compliant

Low Power

Surface Mountable

Tape & Reel

Digital Bit Synchronizer

Received Signal Strength Indicator (RSSI)

RX and TX power management

Power down function

Applications

•

Telemetry

Remote metering

Wireless controller

Remote data repeater

Remote control systems

Wireless modem

Wireless security system

RadioWire® is a trademark of Micrel, Inc

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (

408

) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

July 2006

M9999-082505

Micrel, Inc.

MICRF600/MICRF600Z

Contents

General Description ................................................................................................................................................................ 1

Features .................................................................................................................................................................................. 1

Applications ............................................................................................................................................................................. 1

Contents .................................................................................................................................................................................. 2

RadioWire

RF Module Selection Guide................................................................................................................................. 3

Ordering Information ............................................................................................................................................................... 3

Block Diagram ......................................................................................................................................................................... 3

Pin Configuration..................................................................................................................................................................... 4

Pin Description ........................................................................................................................................................................ 4

Absolute Maximum Ratings

(1)

................................................................................................................................................. 5

Operating Ratings

(2)

................................................................................................................................................................ 5

Electrical Characteristics......................................................................................................................................................... 5

Programming........................................................................................................................................................................... 7

General ............................................................................................................................................................................... 7

Writing to the Control Registers in MICRF600 ................................................................................................................... 8

Writing to a Single Register ................................................................................................................................................ 8

Writing to All Registers ....................................................................................................................................................... 8

Writing to n Registers Having Incremental Addresses ....................................................................................................... 9

Reading from the Control Registers in MICRF600 ............................................................................................................. 9

Reading n Registers from MICRF600................................................................................................................................. 9

Programming Interface Timing.............................................................................................................................................. 10

Power on Reset ................................................................................................................................................................ 11

Programming Summary.................................................................................................................................................... 11

Frequency Synthesizer ......................................................................................................................................................... 12

Crystal Oscillator (XCO) ................................................................................................................................................... 12

VCO .................................................................................................................................................................................. 12

Lock Detect ....................................................................................................................................................................... 13

Modes of Operation............................................................................................................................................................... 13

Transceiver Sync/Non-Synchronous Mode ...................................................................................................................... 14

Data Interface ................................................................................................................................................................... 14

Receiver ................................................................................................................................................................................ 14

Front End .......................................................................................................................................................................... 15

Sallen-Key Filters.............................................................................................................................................................. 15

Switched Capacitor Filter.................................................................................................................................................. 15

RSSI.................................................................................................................................................................................. 15

FEE ................................................................................................................................................................................... 16

Bit Synchronizer................................................................................................................................................................ 16

Transmitter ............................................................................................................................................................................ 18

Power Amplifier................................................................................................................................................................. 18

Frequency Modulation ...................................................................................................................................................... 18

Using the XCO-tune Bits ....................................................................................................................................................... 18

Application Circuit Illustration ................................................................................................................................................ 19

Assembling the MICRF600 ................................................................................................................................................... 19

Recommended Reflow Temperature Profile .................................................................................................................... 19

Shock/Vibration during Reflow.......................................................................................................................................... 19

Handassembling the MICRF600....................................................................................................................................... 19

Layout.................................................................................................................................................................................... 20

Recommended Land Pattern............................................................................................................................................ 20

Layout Considerations ...................................................................................................................................................... 20

Package Dimensions ............................................................................................................................................................ 21

Tape Dimensions .................................................................................................................................................................. 21

July 2006

M9999-082505

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