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INA253-Q1

INA253-Q1 Series

AEC-Q100, 80V, bi-directional, precision current sense amp w/pwm rejection & int. shunt resistor

Manufacturer: Texas Instruments

Catalog

AEC-Q100, 80V, bi-directional, precision current sense amp w/pwm rejection & int. shunt resistor

Key Features

AEC-Q100 qualified for automotive applications:Temperature grade 1: –40 °C to +125 °C, TAFunctional Safety-CapableDocumentation available to aid functional safety system designPrecision integrated shunt resistorShunt resistor: 2 mΩShunt inductance: 3 nHShunt resistor tolerance: 0.1% (maximum)±15 A continuous from –40 °C to +85 °C0 °C to 125 °C temperature coefficient: 10 ppm/°CHigh bandwidth: 350 kHzEnhanced PWM rejectionExcellent CMRR> 120-dB DC CMRR90-dB AC CMRR at 50 kHzAccuracy:Gain:Gain error: 0.4% (maximum)Gain drift: 45 ppm/°C (maximum)Offset:Offset current: ±15 mA (maximum)Offset drift: 125 µA/°C (maximum)Wide common-mode range: –4 V to +80 VAvailable gains: 100 mV/A, 200 mV/A, and 400 mV/AQuiescent current: 2.4 mA (maximum)AEC-Q100 qualified for automotive applications:Temperature grade 1: –40 °C to +125 °C, TAFunctional Safety-CapableDocumentation available to aid functional safety system designPrecision integrated shunt resistorShunt resistor: 2 mΩShunt inductance: 3 nHShunt resistor tolerance: 0.1% (maximum)±15 A continuous from –40 °C to +85 °C0 °C to 125 °C temperature coefficient: 10 ppm/°CHigh bandwidth: 350 kHzEnhanced PWM rejectionExcellent CMRR> 120-dB DC CMRR90-dB AC CMRR at 50 kHzAccuracy:Gain:Gain error: 0.4% (maximum)Gain drift: 45 ppm/°C (maximum)Offset:Offset current: ±15 mA (maximum)Offset drift: 125 µA/°C (maximum)Wide common-mode range: –4 V to +80 VAvailable gains: 100 mV/A, 200 mV/A, and 400 mV/AQuiescent current: 2.4 mA (maximum)

Description

AI
The INA253-Q1 is an automotive, voltage-output, current sense amplifier with an integrated shunt resistor of 2 mΩ. The INA253-Q1 monitors bidirectional currents over a wide common-mode range from –4 V to +80 V, independent of the supply voltage. Three fixed gains are available: 100 mV/A, 200 mV/A, and 400 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 15 ppm/ °C, and an optimized Kelvin layout for the sensing resistor. The INA253-Q1 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 3 mA of supply current. All gain versions are specified over the operating temperature range of –40 °C to +125 °C, and are available in a 20-pin TSSOP package. The INA253-Q1 is an automotive, voltage-output, current sense amplifier with an integrated shunt resistor of 2 mΩ. The INA253-Q1 monitors bidirectional currents over a wide common-mode range from –4 V to +80 V, independent of the supply voltage. Three fixed gains are available: 100 mV/A, 200 mV/A, and 400 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 15 ppm/ °C, and an optimized Kelvin layout for the sensing resistor. The INA253-Q1 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 3 mA of supply current. All gain versions are specified over the operating temperature range of –40 °C to +125 °C, and are available in a 20-pin TSSOP package.