The LTA199 series of bidirectional zero-drift current sense amplifier can sense drops across shunts at common-mode voltages from -0.3V to 30V, independent of the supply voltage. Unidirectional operation allows the LTA199 series to measure currents through are sistive 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 LTA199 series operates from a single +2.7V to +30V power supply, drawing a maximum of 100μA of supply current. The device is specified from –40℃ to +105℃, and offered in SC70-6L and TQFN-10L packages.

•  Wide common-mode range: -0.3V to 30V

•  Maximum ±150μV Offset voltage (LTA199G1) at Vcm=0V

•  Accuracy

  – Maximum ±1% Gain Error

  – Maximum 1μV/℃ Offset Drift

  – Maximum 10ppm/℃ Gain Drift

•  Choice of Gains:

  – LTA199G1: 50V/V

  – LTA199G2: 100V/V

  – LTA199G3: 200V/V

•  Quiescent Current: Maximum 250μA

•  Package: SC70-6L, TQFN-10L(Contact with sales if needed)

•  Power Management

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