The INA253 is a voltage-output, current sense amplifier with an integrated shunt resistor of 2 mΩ. The INA253 is designed to monitor bi-directional currents over a wide command 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 is designed with enhanced PWM rejection circuitry to suppress large (dv/dt) signals to 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 extended operating temperature range (–40°C to 125°C) and are available in an 20-pin TSSOP package.
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|Common Mode Voltage (Max) (V)|
|Common Mode Voltage (Min) (V)|
|Input Offset (+/-) (Max) (uV)|
|Input Offset Drift (+/-) (Typ) (uV/C)|
|Gain Error (%)|
|Gain Error Drift (Max) (ppm/°C)|
|CMRR (Min) (dB)|
|Supply Voltage (Max) (V)|
|Supply Voltage (Min) (V)|
|Iq (Max) (mA)|
|Number of Channels (#)|
|Operating Temperature Range (C)|
|Package Size: mm2:W x L (PKG)|
Enhanced PWM Rejection
|-40 to 125||-40 to 125|
|TSSOP | 20||TSSOP | 16|
|20TSSOP: 42 mm2: 6.4 x 6.5 (TSSOP | 20)||16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)|
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