300 to 450 MHz transmitter claimed to be world's smallest
2 July 2003Telecoms, Datacoms, Wireless, IoT
Products & Solutions
Claimed to be the world's smallest VHF/UHF PLL-based ASK transmitter, the MAX1472 is housed in a tiny 3 x 3 mm 8-pin SOT23 package. The transmitter is targeted at low-cost, high-volume applications where space is critical such as key fobs, security products, garage-door openers, and remote sensors operating in the 300 to 450 MHz band. Maxim's MAX1472 is designed to run directly from a lithium cell as it operates down to 2,1 V, consuming only 100 nA of current in standby mode. During transmission, it can output from -10 to +10 dBm of power into a 50 Ω load. For a +10 dBm power level, the MAX1472 consumes 5,5 mA of current at 315 MHz when using a 50% duty-cycle encoding scheme, such as Manchester. Current consumption drops to 3 mA at 0 dBm output. It can accept data rates up to 100 Kbps.
Since the part is targeted at small, portable applications, the MAX1472 is designed to accept crystal frequencies between 9 to 15 MHz which are widely available in inexpensive, surface-mount packages. Once the device's enable pin is activated, it takes only 250 µs for the device's PLL and crystal to settle, so the device is available to transmit.
Using a crystal-based PLL also means that most of the problems of an LC- or SAW-based transmitter are eliminated. The inherent accuracy of the crystal frequency allows for a narrower IF bandwidth in the receiver to improve system sensitivity. With a receiver like Maxim's MAX1470 or MAX1473, 9 dB improvement in sensitivity is possible by narrowing the IF bandwidth from 600 to 50 kHz. Improved sensitivity translates directly to greater range or more reliable transmissions for the product.
Powering business resilience and field operations
Infrastructure Products & Solutions
[Sponsored] The Anker 757 Portable Power Station emerges as a strategic asset for businesses looking to overcome power instability and the demand for operational efficiency in remote and field-based environments.
Read more...Full sensor to cloud solution CST Electronics
Telecoms, Datacoms, Wireless, IoT
NeoCortec has demonstrated the seamless and rapid development of full sensor-to-cloud solutions using NeoMesh Click boards from MikroE and the IoTConnect cloud solution from Avnet.
Read more...Long-range Wi-Fi HaLow module TRX Electronics
Telecoms, Datacoms, Wireless, IoT
One of Mouser’s newest products is the Morse Micro MM6108-MF08651-US Wi-Fi HaLow Module, which adheres to the IEEE 802.11ah standard.
Read more...Quectel launches 3GPP NTN comms module Quectel Wireless Solutions
Telecoms, Datacoms, Wireless, IoT
Quectel Wireless Solutions has announced the Quectel BG95-S5 3GPP non-terrestrial network (NTN) satellite communication module.
Read more...SIMCom’s A7673x series Otto Wireless Solutions
Telecoms, Datacoms, Wireless, IoT
SIMCom recently released the A7673X series, a Cat.1 bis module based on the ASR1606 chipset, that supports wireless communication modes of LTE-FDD, with a maximum downlink rate of 10 Mbps and a maximum uplink rate of 5 Mbps.
Read more...Banana Pi with NPU CST Electronics
AI & ML
The latest Banana Pi SBC, the BPI-M7, is powered by Rockchip’s latest flagship RK3588 octa-core 64-bit processor, with a maximum frequency of 2,4 GHz.
Read more...Long-range connectivity module Avnet Silica
Telecoms, Datacoms, Wireless, IoT
Digi XBee XR 868 RF Modules support the deployment of long-range connectivity applications, and support point-to-point and mesh networking protocols.
Read more...4G LTE-M/NB-IoT connectivity reference design iCorp Technologies
Telecoms, Datacoms, Wireless, IoT
Developed around the industry-leading Nordic nRF9160 module, the platform comes complete with a newly-developed LTE antenna, ATRIA, which is pre-certified to operate over the full LTE-M and NB-IoT bands.
Read more...Antennas to meet all connectivity requirements Electrocomp
Telecoms, Datacoms, Wireless, IoT
Kyocera AVX RF antennas meet today’s connectivity demands in the LTE, Wi-Fi, Bluetooth, GNSS, and ISM wireless bands, available in surface mount, patch or external configurations.
printer friendly version