Allegro MicroSystems Europe has introduced a new version of its A3212 micropower Hall-effect switch in the ultra-miniature MLP surface-mount package. It measures 2 x 2 mm with a nominal height of 0,5 mm.
Rated for operation over -40 to 85°C, the A3212 devices are ultra-sensitive, pole-independent, Hall-effect switches with latched digital output, and are especially suited to operation in battery-operated, handheld equipment such as cellular and cordless telephones, pagers, and palmtop computers.
Each single-chip device integrates a Hall-voltage generator, a small-signal amplifier, chopper stabilisation circuitry, a latch and a MOSFET output. A 2,5 to 3,5 V operating voltage and a unique clocking scheme are used to reduce the average operating power requirements to less than 15 μW with a 2,75 V supply.
Unlike other Hall-effect switches, the A3212 Series is pole-independent: either a north or south pole or sufficient strength will turn the output 'on'. In the absence of a magnetic field, the output is 'off'. The polarity independence with minimal power requirement allows these devices to replace reed switches for superior reliability and ease of manufacturing, while eliminating the need for signal conditioning.
The switches come in four package styles: leadless miniature low-profile surface-mount package types EH and EL; leaded low-profile SMD type LH; and UA, a three-lead SIP. Each is available in a lead (Pb) free version.
For more information contact Simon Churches, Arrow Altech Distribution, +27 (0)11 923 9600, schurches@arrow.altech.co.za
Reference board for cardio monitoring Altron Arrow
Telecoms, Datacoms, Wireless, IoT
The STDES-ESP01 reference board from STMicroelectronics demonstrates the capability of the ST1VAFE6AX and ST1VAFE3BX biosensors to detect ECG and SCG signals.
Read more...ST MCUs extend ultra-low power innovation Altron Arrow
DSP, Micros & Memory
STMicroelectronics has introduced new STM32U3 microcontrollers with cutting-edge power-saving innovations that ease deployment of smart connected tech, especially in remote locations.
Read more...Multicell battery monitoring Altron Arrow
Power Electronics / Power Management
The LTC6811 from Analog Devices is a multicell battery stack monitor that measures up to 12 series connected battery cells with a total measurement error of less than 1,2 mV.
Read more...Innovative satellite navigation receiver Altron Arrow
Telecoms, Datacoms, Wireless, IoT
STMicroelectronics has released an innovative satellite navigation receiver to democratise precise positioning for automotive and industrial applications.
Read more...LED driver for industrial power supply indication Altron Arrow
Editor's Choice Circuit & System Protection
A simple and small solution for driving an LED to provide visual feedback in the presence/absence of a system’s power using a chip not originally designed for this purpose.
Read more...High-voltage step-down DC-DC converter Altron Arrow
Power Electronics / Power Management
The MAX17793 is a high-efficiency, high-voltage, synchronous step-down DC-DC converter with integrated MOSFETs operating over an input voltage range of 3 to 80 V.
Read more...High-speed SAR ADC simplifies design Altron Arrow
Analogue, Mixed Signal, LSI
The ADI AD4080 simplifies data converter integration by integrating a low drift reference buffer, low dropout regulators and a 16K result data FIFO buffer.
Read more...Ultra-low power Bluetooth connectivity Altron Arrow
Telecoms, Datacoms, Wireless, IoT
Silicon Labs’ delivers robust security and processing for common Bluetooth devices, while BG24L supports advanced AI/ML acceleration and Channel Sounding.
Read more...xG24 is now Bluetooth 6 certified Altron Arrow
Telecoms, Datacoms, Wireless, IoT
Silicon Labs has been closely following the development of Bluetooth Channel Sounding, and is proud to announce that their xG24 SoCs and xGM240 modules are now Bluetooth 6.0 certified.
printer friendly version