0
ACTIVE
Common-mode voltage (max) (V) |
110 |
Common-mode voltage (min) (V) |
-4 |
Continuous current (max) (A) |
75 |
Input offset (±) (max) (µV) |
100 |
Gain error (%) |
0.3 |
CMRR (min) (dB) |
130 |
Bandwidth (kHz) |
1000 |
Supply voltage (max) (V) |
5.5V |
Supply voltage (min) (V) |
2.7 |
Features |
Analog Gain Set, Bidirectional, Enhanced PWM Rejection |
Rating |
Catalog |
Operating temperature range (°C) |
-40 to 125 |
VSON (DEK)-15-See data sheet
The INA790x is a voltage output, current sense amplifier with an integrated shunt resistor of 400µΩ. The INA790x is designed to monitor bidirectional current over a common-mode range of –4V to 110V, independent of the supply voltage. Adjustable gain option assists in optimizing the system dynamic range. The integration of the Kelvin connected shunt resistor with a zero-drift chopped amplifier provides calibration equivalent measurement accuracy, ultra-low temperature drift performance of ±35ppm/°C, and an optimized layout for the sensing resistor.
The INA790x is designed with enhanced PWM rejection circuitry to suppress disturbance from large (dv/dt) common-mode transients and enable real-time continuous current measurements in switching systems. The continuous measurements are critical for inline current measurements in a motor-drive application, and for solenoid valve control application.
This device operates from a single 2.7V to 5.5V power supply, drawing a maximum of 4.25mA of supply current. All versions are specified over the extended operating temperature range (–40°C to +125°C), and are available in a 15-pin VQFN package.
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