The INA290-Q1 is an ultra-precise current sense amplifier than can measure voltage drops across shunt resistors over a wide common-mode range from 2.7 V to 110 V. It is in a highly space-efficient SC-70 package with a PCB footprint of only 2.00 mm × 1.25 mm. The ultra-precise current measurement accuracy is achieved thanks to the combination of an ultra-low offset voltage of 25 µV (maximum), a small gain error of 0.25% (maximum), and a high DC CMRR of 160 dB (typical). The INA290-Q1 is not only designed for DC current measurement, but also for high-speed applications (like fast overcurrent protection, for example) with a high bandwidth of 800 kHz (at gain of 20 V/V) and an 85-dB AC CMRR (at 50 kHz).
The INA290-Q1 operates from a single 2.7-V to 20-V supply and draws a 350-µA supply current (typical). The INA290-Q1 is available with five gain options: 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V. The low offset of the zero-drift architecture enables current sensing with low ohmic shunts as specified over the extended operating temperature range (−40°C to +125°C).
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|Part number||Order||Common mode voltage (Max) (V)||Common mode voltage (Min) (V)||Input offset (+/-) (Max) (uV)||Input offset drift (+/-) (Typ) (uV/C)||Gain (V/V)||Gain error (%)||Gain error drift (+/-) (Max) (ppm/°C)||CMRR (Min) (dB)||Bandwidth (kHz)||Supply voltage (Max) (V)||Supply voltage (Min) (V)||Iq (Max) (mA)||Number of channels (#)||Comparators (#)||Rating||Operating temperature range (C)||Package Group||Package size: mm2:W x L (PKG)|
|0.25||10||140||800||20||2.7||0.6||1||0||Automotive||-40 to 125||SC70 | 5||5SC70: 4 mm2: 2.1 x 2 (SC70 | 5)|