The TP181 series of zero-drift, bi-directional current senseamplifier can sense voltage drops across shunts at commonmodevoltages from –0.3V to 36V, independent of the supply voltage.Three fixed gains are available: 50V/V, 100V/V and 200V/V. The lowoffset of the zero-drift architecture enables current sensing withmaximum drops across the shunt as low as 10mV full-scale.
TP181 devices operate from a single +2.7V to 30V power supply, withdrawing a typical of 120uA of supply current. All versions arespecified from –40°C +125°C, and offered in SC70- 6 packages.
Features
VOLTAGE OFFSET: ±100uV (MAX)
WIDE COMMON MODE VOLTAGE: -0.3V to +36V
SUPPLY VOLTAGE: 2.7V to +30V
ACCURACY and ZERO-DRIFT PERFORMANCE
±1% Gain Error (Max over temperature)
0.5μV/°C Offset Drift (Max)
10ppm/°C Gain Drift (Max)
THREE GAIN OPTIONS for VOLTAGE OUTPUT
TP181A1: 50V/V
TP181A2: 100V/V
TP181A3: 200V/V
LOW SUPPLY CURRENT: 120uA (TYP)
Rail-to-Rail Output
PACKAGE: SC70-6
Industrial –40°C to 125°C Operation Range
ESD Rating: Robust 2KV – HBM, 2KV – 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 CIGIRATE
WIRELESS CHARGER
TELECOM E
