TP181(3PEAK)

The TP181 series of zero-drift, bi-directional current sense amplifiers can sense voltage drops across shunts at commonmode voltages from –0.3 V to 36 V, independent of the supply voltage. Three fixed gains are available: 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.

TP181 devices operate from a single +2.7-V to 30-V power supply, with drawing a typical of 120 uA of supply current. All versions are specified from –40°C +125°C, and offered in the SC70-6 package.

Features

◼ Voltage Offset: ±100 uV (MAX)

◼ Wide Common-Mode Voltage: -0.3 V to +36 V

◼ Supply 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)

◆ 10ppm/°C Gain Drift (Max)

◼ Three Gain Options for Voltage Output

◆ TP181A1: 50 V/V

◆ TP181A2: 100 V/V

◆ TP181A3: 200 V/V

◼ Low Supply Current: 120 uA (TYP)

◼ Rail-to-Rail Output

◼ Package: SC70-6

◼ Industrial –40°C to 125°C Operation Range

◼ ESD Rating: Robust 2 KV – HBM, 2 KV – CDM

◼ Higher Performance Drop-In Compatible with

INA213, INA214, INA199, NCS199 Products

Applications

◼ Current Sensing (High−Side/Low−Side)

◼ Battery Chargers

◼ Power Management

◼ Cell Phone Charger

◼ Electrical Cigarette

◼ Wireless Charger

◼ Telecom Equipment