The TPA183 series of zero-drift, unidirectional currentsense amplifiers can sense voltage drops acrossshunts at common-mode voltages from 2.7 V to 30 V.

The TPA183 series supports a voltage output with options of four fixed gains: 25 V/V, 50 V/V, 100 V/V,and 200 V/V. The low offset of the zero-drift architecture enables current sensing with maximum drops across the shunt as low as 10 mV full-scale.

The TPA183 does not have a separate VCC supply voltage pin. The operating supply voltage is internally connected to IN+ pin, drawing a maximum of 220 μA
quiescent current. All versions are specified from –40°C +125°C and offered in the SOT23-5 package.

　　Features

 Offset Voltage: ±250 μV (MAX)

 Wide Common-Mode Voltage: 2.7 V to 30 V

 Accuracy and Zero-Drift Performance

 ±1% Gain Error (Max over temperature)

 0.5μV/°C Offset Drift (Max)

 10 ppm/°C Gain Drift (Max)

 Four Gain Options:

− TPA183A1: 25 V/V

− TPA183A2: 50 V/V

− TPA183A3: 100 V/V

− TPA183A4: 200 V/V

 Quiescent Current (IN+): 220 μA (Maximum)

 Rail-to-Rail Output

 Package: SOT23-5

 Industrial −40°C to 125°C Operation Range

 ESD Rating: Robust 2 kV – HBM, 2 kV – CDM