MRF39RA datasheet(3/72 Pages) MICROCHIP

3 / 72 page

 2015 Microchip Technology Inc.

DS40001778B-page 3

MRF39RA

1.0

OVERVIEW

The MRF39RA is a single-chip integrated circuit

ideally suited for today’s high-performance ISM band

RF applications. The MRF39RA’s advanced features

set, including state-of-the-art packet engine, greatly

simplifies system design while the high level of

integration reduces the external bill of materials (BOM)

to a handful of passive decoupling and matching

components.

intended

for

use

high-performance, low-cost FSK and OOK RF receiver

for robust frequency agile RF links, and where stable

and constant RF performance is required over the full

operating range of the device down to 1.8V.

The MRF39RA is intended for applications over a wide

frequency range, including the 433 MHz and 868 MHz

European and 902-928 MHz North American ISM

bands. Coupled with a very aggressive sensitivity, the

advanced system features of the MRF39RA include a

66-byte RX FIFO, configurable automatic packet

handler, Listen mode, temperature sensor and

configurable DIOs, which greatly enhance system

flexibility

while

significantly

reducing

MCU

requirements at the same time.

The MRF39RA complies with both ETSI and FCC

regulatory requirements and is available in a 5 x 5 mm

24-lead QFN package.

FIGURE 1-1:

SIMPLIFIED BLOCK DIAGRAM

LNA

Single to

Differential

Mixers



Modulators

RSSI

AFC

Division by

2, 4 or 6

Frac-N PLL

Synthesizer

32 MHz

XTAL

Tank

Inductor

Loop

Filter

RFIN

RESET

Power Distribution System

VBAT1&2

VR_ANA

VR_DIG

Oscillator

Frequency Synthesis

Receiver Blocks

Control Blocks

Primarily Analog

Primarily Digital

GND

SPI

DIO0

GND

DIO1

DIO2

DIO3

DIO4

DIO5

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