Description:

The GD30IN199G series of bidirectional zero-drift current sense amplifier can sense drops across shunts at common-mode voltages from −0.3V to 26V, independent of the supply voltage. Unidirectional operation allows the GD30IN199G series to measure currents through a resistive shunt in one direction, while bidirectional operation allows the device to measure currents through a resistive shunt in two directions. The low offset of the zero- drift architecture enables current sensing with maximum drops across the shunt as low as

10mV full-scale.The GD30IN199G series operates from a single +2.5Vto +18V power supply, drawing a maximum of 100μA ofsupply current. The device is specified from –40°C to+105°C, and offered in SC70-6L and TQFN-10Lpackages.

Features:

• Wide common-mode range: -0.3V to 26V

• Maximum 180μV Offset voltage(GD30IN199G--IL1/-IL2) Enable Shunt Dropsof 10mV Full-scale

• Accuracy

– Maximum ±0.5% Gain Error

– Maximum 0.5μV/°C Offset Drift

– Maximum 10ppm/°C Gain Drift

• Choice of Gains:

– GD30IN199G-IL1: 50V/V

– GD30IN199G-IL2: 100V/V

• Quiescent Current: Maximum 100μA

• Package: SC70-6L, TQFN-10L