Precision current sensing over 0-26V with 10mV burden and automotive qualification

Known as the ZXCT21xQ household, there are six acquire choices:

• 50V/V  ZXCT213Q
• 75V/V  ZXCT215Q
• 100V/V  ZXCT214Q
• 200V/V  ZXCT210Q
• 500V/V  ZXCT211Q
• 1kV/V  ZXCT212Q

Inside is a ‘zero-drift’ topology for precision. Every sort has A, B and C variants that provide a alternative of enter offset and acquire linearity. C-types are essentially the most exact as all have 0.5% acquire linearity, and 200, 500 and 1,000V/V components exhibit ±35μV enter most offset (±550nV typical). 10ppm/°C most acquire error drift is laid out in all components.

Operation is throughout 2.7V to 26V provides (100μA max quiescent) and -40 to +125°C, and shunt drops all the way down to 10mV full-scale are supported.

It is a sluggish gadget, with bandwidth measured in kHz and a 0.4V/µs slew price. The place high-bandwidth differential enter sign are anticipated, an RRC enter filter might be applied with a sequence resistor (as much as 10Ω to retain accuracy) in every enter lead and a capacitor throughout the inputs. “Ideally, choose the capacitor to precisely match the time fixed of the shunt resistor and its inductance,” mentioned Diodes.

Packaging is 2 x 2.1mm 6pad SOT363.

All components are AEC-Q100 Grade 1 certified for automotive use, manufactured in IATF 16949 licensed services, and assist PPAP documentation.

Automotive purposes embody present sensing in brush-less dc motor controllers, dc-dc converters, on-board chargers, battery administration programs, automated driving unit energy provides and wi-fi cellphone chargers.