ACS770LCB-100B-PFF-T Description

Current sensor ICs of the AllegroTM ACS770 family offer affordable and accurate solutions for AC or DC current detection. Motor control, load management, power supply and DC-to-DC converter control, inverter control, and overcurrent fault detection are examples of typical uses. A copper conduction route near the die is part of a precision, low-offset linear Hall circuit that makes up the gadget. A low magnetic hysteresis core concentrates the magnetic field created by the applied current flowing through this copper conduction path, and the Hall IC subsequently converts the magnetic field into a proportional voltage. The magnetic signal's near proximity to the Hall transducer improves device precision.

ACS770LCB-100B-PFF-T Features

Industry-leading total output accuracy achieved with new piecewise linear digital temperature compensation of offset and sensitivity

Industry-leading noise performance through proprietary amplifier and filter design techniques

120 kHz typical bandwidth

4.1 µs output rise time in response to step input current

Integrated shield greatly reduces capacitive coupling from current conductor to die due to high dV/dt signals, and prevents offset drift in high-side, high-voltage applications

Greatly improved total output error through digitally programmed and compensated gain and offset over the full operating temperature range

Small package size, with easy mounting capability

Monolithic Hall IC for high reliability

Ultralow power loss:100 µΩ internal conductor resistance

Galvanic isolation allows use in economical, high-side current sensing in high-voltage systems

4.5 to 5.5 V, single supply operation

Output voltage proportional to AC or DC currents

Factory-trimmed for accuracy

Extremely stable output offset voltage

ACS770LCB-100B-PFF-T Applications

Temperature Measurement

Pressure Measurement

Flow Meters

Factory Automation and Process Control