± 20A Integrated Current Sensor
application INFO available
UCC1926 UCC2926 UCC3926
FEATURES • Integral Non-inductive ...
± 20A Integrated Current Sensor
application INFO available
UCC1926 UCC2926 UCC3926
FEATURES Integral Non-inductive Current Sense
Element with Internal Kelvin Connections
20A Current Rating
Bi-directional, High Side or Low Side Sensing
Internal Temperature Nulling Circuitry for Current Sense Element and Amplifier
Logic Compatible Current Direction Status Output
Low Offset, Chopper Stabilized Current Sense Amplifier
Uncommitted Amplifier with User Programmable Gain
Overcurrent Indication with User Programmable Threshold
DESCRIPTION
The UCC3926 Current Sensor IC contains a wideband, transimpedance amplifier for converting the current through an internal, non-inductive 1.3mΩ shunt resistor into a proportional
voltage. The sense element operates in both high-side (VDD referenced) and low-side (GND referenced) applications.
The UCC3926 can measure currents up to ±20A. This transimpedance amplifier gain is precisely trimmed to 33.3mΩ to convert a 15A input into a 500mV output signal. It has a very low input offset
voltage from chopper-stabilization. A cross-switching block rectifies the input signal by forcing the differential output, AOP positive with respect to the other differential output, AON. SIGN indicates the polarity of the current.
The UCC3926 programmable amplifier provides three functions. It converts the differential transimpedance output signal into a single-ended signal. It has a user-controlled gain stage that sets the maximum current level to the...