© Semiconductor Components Industries, LLC, 2016
April, 2016 − Rev. 4
1 Publication Order Number:
AX5042/D
AX5042
Advanced Multi-channel
Single Chip UHF Transceiver
OVERVIEW
The AX5042 is a true single chip low−power CMOS transceiver
primarily for use in SRD bands. The on−chip transceiver consists of a
fully integrated RF front−end with modulator and demodulator. Base
band data processing is implemented in an advanced and flexible
communication controller that enables user friendly communication
via the SPI interface or in direct wire mode.
Features
• Advanced Multi−channel Single Chip UHF Transceiver
• Configurable for Usage in 400−470 (510) MHz and
800−940 (1020) MHz ISM Bands
• Wide Variety of Shaped Modulations Supported in RX and TX
(ASK, PSK, OQPSK, MSK, FSK, GFSK)
• Data Rates from 1 to 250 kbps (FSK, MSK, GFSK, GMSK,
OQPSK) and 2 to 600 kbps (ASK, PSK) with Fully Scaling
Narrow−band Channel Filtering
• 4.8 kHz to 600 kHz Programmable Channel Filter
• Ultra Fast Settling RF Frequency Synthesizer for Low−power
Consumption
• 802.15.4 Compatible
• RS−232 (UART) Compatible
• RF Carrier Frequency and FSK Deviation
Programmable in 1 Hz Steps
• Fully Integrated Frequency Synthesizer with VCO
Auto−ranging and Band−width Boost Modes for Fast
Locking
• Few External Components
• On−chip Communication Controller and Flexible
Digital Modem
• Channel Hopping up to 2000 hops/s
• Sensitivity down to −123 dBm @ 1.2 kbps FSK
• Sensitivity down to −115 dBm @ 10 kbps FSK
• Up to +10 dBm (+13 dBm 433 MHz) Programmable
Transmitter Power Amplifier for Long Range
Operation
• Crystal Oscillator with Programmable
Transconductance for Low Cost Crystals (a TCXO is
recommended for Channel Filter BW < 40 kHz)
• Automatic Frequency Control (AFC)
• SPI Micro−controller Interface
• Digital RSSI with 0.625 dB Resolution
• Fully Integrated Current/Voltage References
• Wire and Frame Mode
• QFN28 Package
• Low Power 17 − 23 mA at 2.5 V Supply during
Receive and 13 − 37 mA during Transmit
• 24 Bit RX/TX FIFO
• 2.3 V to 2.8 V Supply Range
• Programmable Cyclic Redundancy Check
(CRC−CCITT, CRC−16, CRC−32)
• Optional Spectral Shaping Using a Self Synchronized
Shift Register
• RoHS Compliant
Applications
400−470 MHz and 800−940 MHz data transmission and
reception in the Short Range Device (SRD) band. The
frequency range up to 510 MHz and 1020 MHz is accessible
with higher VDD limit.
• Automatic Meter Reading
• FCC Part 90.210 6.25 kHz, 12.5 kHz and 25 kHz
Applications
• EN 300 220 V 2.1.1
• European Paging Applications
• Long Range Sensor Read−out
• Long Range Remote Controls
www.onsemi.com
ORDERING INFORMATION
Device Type Qty
AX5042−1−TA05 Tape & Reel
500
AX5042−1−TW30 Tape & Reel 3,000
QFN28 5x5, 0.5P
CASE 485EF
28
1
