Description：

The TPA183 is a series of zero-drift, unidirectional currentsense amplifiers that can sense voltage drops acrossshunts at common-mode voltages from 2.7 V to 30 V. TheTPA183 series supports a voltage output with options offour fixed gains: 25 V/V, 50 V/V, 100 V/V, and 200 V/V.The low offset of the zero-drift architecture enables thefull-scale current sensing with maximum drops across theshunts to be as low as 10 mV.The TPA183 series does not have a separate VCC supplyvoltage pin. The operating supply voltage is internallyconnected to the IN+ pin, drawing a maximum quiescentcurrent of 220 μA.The TPA183 series is specified from −40°C to +125°C, andoffered 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)

– 0.5-μV/°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 (Max)

• Rail-to-Rail Output

• Package: SOT23-5

• Industrial Operation Range: −40°C to 125°C

• ESD Rating: Robust 2-kV HBM, 2-kV CDMApplications

• Current Sense (High-Side/Low-Side)

• Power Management

• Battery Chargers