MRF39RA Datasheet, PDF (3/72 Pages) Microchip Technology – Low-Power, Integrated UHF Receiver

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. It is intended for use as a
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.
FIGURE 1-1:
SIMPLIFIED BLOCK DIAGRAM
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.
RFIN
VBAT1&2
VR_ANA
VR_DIG
Power Distribution System
LNA

Single to
Mixers
Modulators
Differential
RC
Oscillator
Division by
2, 4 or 6
RSSI
AFC
Tank
Inductor
NC
Loop
Frac-N PLL
Filter
Synthesizer
NC
NC
XO
32 MHz
Frequency Synthesis
Receiver Blocks
XTAL
GND
Control Blocks
Primarily Analog
Primarily Digital
RESET
SPI
GND
DIO0
DIO1
DIO2
DIO3
DIO4
DIO5
 2015 Microchip Technology Inc.
DS40001778B-page 3