Maxim has introduced ICs that set and control bias conditions for dual Mesfet power devices found in point-to-point communication and other microwave base stations. The MAX11014 integrates closed-loop drain-current control for class A Mesfet amplifier operation, while the MAX11015 sets the Mesfet gate voltage for class AB operation. Both devices integrate SRAM look-up tables (LUTs) that can be used to store temperature and drain-current compensation data.
The MAX11014/MAX11015 are said to be unique in their unmatched level of integration. Each device includes dual, high-side, current-sense amplifiers to monitor the Mesfet drain currents through the voltage drop across the sense resistors in the 0 to 625 mV range. External diode-connected transistors monitor the Mesfet temperatures, while an internal temperature sensor measures the local die temperature. An internal DAC sets the voltages across the current-sense resistors by controlling the gate voltages. The internal 12-bit SAR ADC digitises internal and external temperature, internal DAC voltages, current-sense amplifier voltages, and external gate voltages. Two of the 11 ADC channels are available as general-purpose analog inputs for analog system monitoring. An internal reference provides a regulated, low-noise, +2,5 V reference for the ADC, DAC, and temperature sensors while still allowing the flexibility to operate from the ADC's and DAC's individual external references.
The MAX11014's gate-drive amplifier functions as an integrator for the drain-current control loop, while the MAX11015's gate-drive amplifier functions with a gain of -2 for class AB applications. The current-limited gate-drive amplifier can be fast clamped to a programmable analog voltage independent of the digital input from the serial interface. Both the MAX11014 and MAX11015 include self-calibration modes to minimise error over time, temperature, and supply voltage.
These two bias controllers communicate over a 20 MHz SPI 4-wire serial interface or a 3,4 MHz I²C serial interface.
5G mobile hotspot with integrated multimodal AI capabilities CST Electronics
Computer/Embedded Technology
MeiG Smart has launched its first 5G Mobile HotSpot solution, the SRT8710, a breakthrough in mobile connectivity that combines ultra-fast 5G communications with integrated multimodal artificial intelligence functions.
Read more...Smart IMU for high/low-g acceleration Altron Arrow
Analogue, Mixed Signal, LSI
The ISM6HG256X is a 6-axis intelligent inertial measurement unit that enables smart motion sensing, edge computing, and real-time awareness.
Read more...Precision in next-gen asset tracking Electrocomp
Telecoms, Datacoms, Wireless, IoT
KYOCERA AVX’s advanced antenna technologies have been engineered specifically for compact, high-performance tracking devices.
Read more...Miniaturised RFID Tags Electrocomp
Telecoms, Datacoms, Wireless, IoT
In the rapidly evolving landscape of Industry 4.0, where precision, resilience, and compact design are more than buzzwords, Neosid is revolutionising identification through its NeoTAG line of RFID transponders.
Read more...Compact Schottky diodes increase efficiency RS South Africa
Analogue, Mixed Signal, LSI
Gen 3 SiC Schottky diodes from Vishay in the compact SlimSMA HV package increase efficiency while enhancing electrical insulation.
Read more...Silanna launches Plural ADC EVKs
Analogue, Mixed Signal, LSI
Silanna Semiconductor has released its first evaluation kits for the Plural data converter family to offer the fastest, most cost-effective way to evaluate and deploy high-performance ADCs.
Read more...High speed, low noise 2 A driver iCorp Technologies
Analogue, Mixed Signal, LSI
The SGM8423-2A from SGMICRO is a high efficiency, class AB, low distortion power line driver optimised to accept a signal from a Power Line Carrier modem.
Read more...Online sensor technology hub
Analogue, Mixed Signal, LSI
Mouser’s sensor content hub offers an extensive collection of articles, blogs, eBooks, and product information from its technical experts and leading manufacturing partners.
Read more...Ultra-low power MEMS accelerometer Altron Arrow
Analogue, Mixed Signal, LSI
Analog Devices’ ADXL366 is an ultra-low power, 3-axis MEMS accelerometer that consumes only 0,96 µA at a 100 Hz output data rate and 191 nA when in motion-triggered wake-up mode.
Read more...NeoMesh on LoRa CST Electronics
Telecoms, Datacoms, Wireless, IoT
Thomas Steen Halkier, CEO of NeoCortec, recently gave a keynote speech where he spoke about “NeoMesh on LoRa: Bringing true mesh networking to the LoRa PHY”.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version