Premo has introduced a new series of
Hall Effect sensors designed for a single supply voltage of +5V. The
DSR5 family is a close loop technology component in a small package for
THT mounting. Primary winding is already integrated to enable
measurement of DC, AC and pulse currents on printed circuit boards.
Key characteristic of the DSR5 series is that the sensor
includes an external pin that allows access to the internal reference
(2.5 V). The pin can be used as an output or input signal to be used by
microcontrollers providing better offset control at zero current.
The series has been designed for nominal currents of 6, 15, 25 and 50
Amps. The multi-pin configuration allows different range of nominal
currents by connecting 1, 2 or 3 pins in the primary winding.
The output signal is centered at 2.5 V with an output voltage of ±0.625 V
at nominal input currents, but the design allows detecting currents up
to three times nominal current.
The sensor also provides a linearity <0.1% with a ±0.7% accuracy
levels. Bandwidth is up to 150 kHz with a response time below 0.5 us.
Offset drift versus temperature is as low as 0.3% mV/ºC and consumption
of the circuit is only 20 mA at no current condition.
The current sensor is specially designed to meet the highest safety
requirements. It is fully isolated with plastic housing, meeting
isolation values higher than 3000 Vac.
The device is fully compliant to the following industrial standards:
Isolated plastic case recognized according to UL94-V0
David Patterson, known for his pioneering research that led to RAID, clusters and more, is part of a team at UC Berkeley that recently made its RISC-V processor architecture an open source hardware offering. We talk with Patterson and one of his colleagues behind the effort about the opportunities they see, what new kinds of designs they hope to enable and what it means for today’s commercial processor giants such as Intel, ARM and Imagination Technologies.