The MICRF506 is a single chip, frequency shift keying (FSK) transceiver intended for use in half-duplex, bidirectional RF links. This multichanneled FSK transceiver from Micrel is intended for UHF radio equipment in compliance with the FCC part 15.247 and 249, as well as ETSI specification, EN300 220.
The transmitter consists of a PLL frequency synthesiser and a power amplifier. The frequency synthesiser consists of a VCO, a crystal oscillator, dual modulus prescaler, programmable frequency dividers, and a phase-detector. The loop-filter is external for flexibility and can be a simple passive circuit. 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 synthesiser generates the local oscillator (LO) signal.
The receiver is a zero 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 mixer 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 RC filter can be programmed to four different frequencies: 100, 150, 230 and 340 kHz. The I and Q channel outputs are demodulated and produce a digital data output.
If the phase of the I channel signal lags behind the Q channel, the FSK tone frequency is above the LO frequency (data '1' is output). If it leads the Q channel, the FSK tone is below the LO frequency (data '0' is output). A receive signal strength indicator indicates the received signal level.
Industrial Ethernet time sensitive networking switch RS South Africa
Telecoms, Datacoms, Wireless, IoT
The ADIN3310 and ADIN6310 are 3-port and 6-port Gigabit Ethernet time sensitive networking (TSN) switches with integrated security primarily designed for industrial Ethernet applications.
Read more...Automotive-grade digital isolators
Telecoms, Datacoms, Wireless, IoT
The NSI83xx series of capacitive-based isolators from NOVOSENSE Microelectronics offer superior EOS resilience and minimal power noise susceptibility.
Read more...Why bis means business for LTE Cat 1 IoT connections NuVision Electronics
Editor's Choice Telecoms, Datacoms, Wireless, IoT
Tomaž Petaros, product manager IoT EMEA at Quectel Wireless Solutions explains why the market for Cat 1bis IoT connections is getting busy.
Read more...Wi-Fi in 2025: When is Wi-Fi 7 the answer? iCorp Technologies
Telecoms, Datacoms, Wireless, IoT
Wi-Fi 7 introduces multi-link operation and lower latency, a game-changing feature that allows devices to transmit and receive data across multiple frequency bands simultaneously to significantly reduce network congestion.
Read more...Bluetooth Lite SoCs purpose built for IoT NuVision Electronics
Telecoms, Datacoms, Wireless, IoT
Whether it is enabling predictive maintenance on industrial equipment, tracking assets in dense environments, or running for years on a coin cell battery in ultra-low power sensors, developers need solutions that are lean, reliable, and ready to scale with emerging use cases.
Read more...LTE Cat 1bis module Otto Wireless Solutions
Telecoms, Datacoms, Wireless, IoT
The A7673X LTE Cat 1bis module from SimCom is engineered to meet the growing demands of the IoT industry, offering exceptional performance and seamless integration.
Read more...Track with precision Electrocomp
Telecoms, Datacoms, Wireless, IoT
KYOCERA AVX provides innovative antennas for cellular, LTE-M, NB-IoT, LoRa, GNSS, BLE, UWB, Wi-Fi, and future Satellite IoT.
Read more...Wi-Fi 7 front-end module RF Design
Telecoms, Datacoms, Wireless, IoT
The Qorvo QPF4609 is an integrated front end module designed for 802.11be systems that has integrated matching, which minimises layout area.
Read more...Multi-channel downconverter Vepac Electronics
Telecoms, Datacoms, Wireless, IoT
The Downconverter from Crane Aerospace is a converter that operates from 2 to 18 GHz and delivers a noise figure of 11 dB with an attenuation range of 25 dB.
printer friendly version