Ina190a1qdckrq1 current sense amplifier Ti original stock

Characteristics of ina190-q1

Comply with aec-q100 standard for automotive applications:

Temperature class 1: - 40 ° C to + 125 ° C, Ta

Provide functional safety

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Low input bias current: 500 PA (typical) (micro ampere level current measurement is supported)

Low power consumption:

Low power supply voltage vs: 1.7V to 5.5V

Low off current: 100 Na (maximum)

Low quiescent current: 50 µ a at 25 ° C (typical)

Accuracy:

Common mode rejection ratio: 132 dB (min.)

Gain error: ± 0.2% (A1 device)

Gain drift: 7 ppm / ° C (maximum)

Offset voltage Vos: ± 15 µ V (maximum)

Offset drift: 80 NV / ° C (maximum)

Wide common mode voltage: - 0.2V to + 40V, can withstand up to 42V

Bidirectional current sensing function

Gain options:

INA190A1-Q1：25 V/V

INA190A2-Q1：50V/V

INA190A3-Q1：100V/V

INA190A4-Q1：200V/V

INA190A5-Q1：500V/V

Description of ina190-q1

Ina190-q1 is an automotive type, Low-Power Voltage Output Current Shunt Monitor (also known as current sense amplifier). This device is commonly used to monitor systems directly connected to 12V batteries of automobiles. Ina190-q1 can sense the voltage drop across the shunt at a common mode voltage of – 0.2V to + 40V independent of the power supply voltage. In addition, the input pin also has an absolute maximum voltage of 42V.

The low input bias current of the device allows the use of larger current sensing resistors, which can provide accurate current measurement on the micro ampere level. The low offset voltage of the zero drift architecture extends the dynamic range of current measurement. This feature enables smaller inductive resistors to provide accurate current measurement with lower power losses.

Ina190-q1 is powered by 1.7V to 5.5V single power supply. The maximum power supply current consumed when enabled is 65 µ a, while it is only 0.1 µ a when disabled. Five fixed gain options are available: 25V / V, 50V / V, 100V / V, 200V / V or 500V / v. The device has a rated operating temperature range of – 40 ° C to + 125 ° C and is packaged in SC70 and SOT-23.