INA254 Series

80-V, bidirectional ±75-A zero-drift current-sense amplifier with PWM rejection and shunt resistor

Catalog

80-V, bidirectional ±75-A zero-drift current-sense amplifier with PWM rejection and shunt resistor

Part	-3db Bandwidth	Voltage - Supply Span (Max) [Max]	Mounting Type	Number of Circuits	Package / Case	Package / Case	Amplifier Type	Operating Temperature [Min]	Operating Temperature [Max]	Slew Rate	Current - Input Bias	Output Type	Current - Supply	Supplier Device Package	Voltage - Supply Span (Min) [Min]
Texas Instruments INA254A1IPWAR	350 kHz	5.5 V	Surface Mount	1	24-SOP Exposed Pad	0.173 in 4.4 mm	Current Sense	-40 °C	125 °C	2.4 V/µs	90 µA	Single-Ended	1.8 mA	24-HTSSOP	2.7 V
Texas Instruments INA254A2IPWAR	350 kHz	5.5 V	Surface Mount	1	24-SOP Exposed Pad	0.173 in 4.4 mm	Current Sense	-40 °C	125 °C	2.4 V/µs	90 µA	Single-Ended	1.8 mA	24-HTSSOP	2.7 V

Catalog

80-V, bidirectional ±75-A zero-drift current-sense amplifier with PWM rejection and shunt resistor

Key Features

• Precision integrated 400-µΩ shunt resistorContinuous ±75 A at 25°CContinuous ±50 A from –40°C to +85°CShunt resistor tolerance: 0.5% (maximum)Low drift: 10 ppm/°C (0°C to 125°C)Low inductance: 2 nHHigh accuracySystem gain error: 0.5% (maximum)System gain drift: 45 ppm/°C (maximum)Input offset current: ±62.5 mA (maximum)Input offset drift: 625 µA/°C (maximum)DC CMRR > 120-dB90-dB AC CMRR at 50 kHzEnhanced PWM rejectionWide common-mode range: –4 V to +80 VAvailable gains: 20 mV/A, 40 mV/A, and 75 mV/APrecision integrated 400-µΩ shunt resistorContinuous ±75 A at 25°CContinuous ±50 A from –40°C to +85°CShunt resistor tolerance: 0.5% (maximum)Low drift: 10 ppm/°C (0°C to 125°C)Low inductance: 2 nHHigh accuracySystem gain error: 0.5% (maximum)System gain drift: 45 ppm/°C (maximum)Input offset current: ±62.5 mA (maximum)Input offset drift: 625 µA/°C (maximum)DC CMRR > 120-dB90-dB AC CMRR at 50 kHzEnhanced PWM rejectionWide common-mode range: –4 V to +80 VAvailable gains: 20 mV/A, 40 mV/A, and 75 mV/A

Description

The INA254 is a voltage-output, current sense amplifier with a 400-µΩ integrated shunt resistor. The INA254 is designed to monitor bidirectional currents over a wide common-mode range from –4 V to +80 V, independent of the supply voltage. Three fixed gains are available: 20 mV/A, 40 mV/A, and 75 mV/A. The integration of the precision resistor with a zero-drift chopped amplifier provides calibration equivalent measurement accuracy, ultra-low temperature drift performance of ±45 ppm/°C (maximum), and an optimized Kelvin layout for the sensing resistor. The INA254 is designed with enhanced PWM rejection circuitry to suppress large (dv/dt) signals that enable real-time continuous current measurements. The measurements are critical for in-line current measurements in a motor-drive application, and for solenoid valve control applications. This device operates from a single 2.7-V to 5.5-V power supply, drawing a maximum of 2.4 mA of supply current. All gain versions are specified over the extended operating temperature range (–40°C to +125°C), and are available in a 24-pin HTSSOP package. The INA254 is a voltage-output, current sense amplifier with a 400-µΩ integrated shunt resistor. The INA254 is designed to monitor bidirectional currents over a wide common-mode range from –4 V to +80 V, independent of the supply voltage. Three fixed gains are available: 20 mV/A, 40 mV/A, and 75 mV/A. The integration of the precision resistor with a zero-drift chopped amplifier provides calibration equivalent measurement accuracy, ultra-low temperature drift performance of ±45 ppm/°C (maximum), and an optimized Kelvin layout for the sensing resistor. The INA254 is designed with enhanced PWM rejection circuitry to suppress large (dv/dt) signals that enable real-time continuous current measurements. The measurements are critical for in-line current measurements in a motor-drive application, and for solenoid valve control applications. This device operates from a single 2.7-V to 5.5-V power supply, drawing a maximum of 2.4 mA of supply current. All gain versions are specified over the extended operating temperature range (–40°C to +125°C), and are available in a 24-pin HTSSOP package.