The INA170 is a high-side, bidirectional current shunt monitor featuring a wide input common-mode voltage range, low quiescent current, and a tiny MSOP-8 package.
Bidirectional current measurement is accomplished by output offsetting. The offset voltage level is set with an external resistor and voltage reference. This permits measurement of a bidirectional shunt current while using a single supply for the INA170.
Input common-mode and power-supply voltages are independent. Input voltage can range from +2.7V to +60V on any supply voltage from +2.7V to +40V. Low 10µA input bias current adds minimal error to the shunt current.
The INA170 converts a differential input voltage to a current output. This current develops a voltage across an external load resistor, setting any gain from 1 to over 100.
The INA170 is available in an MSOP-8 package, and is specified over the extended industrial temperature range, –40°C to +85°C with operation from –55°C to +125°C.
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| Product type | Analog output |
| Common-mode voltage (max) (V) | 60 |
| Common-mode voltage (min) (V) | 2.7 |
| Input offset (±) (max) (µV) | 1000 |
| Input offset drift (±) (typ) (µV/°C) | 1 |
| Voltage gain (V/V) | adjustable |
| CMRR (min) (dB) | 100 |
| Bandwidth (kHz) | 200 |
| Supply voltage (max) (V) | 60 |
| Supply voltage (min) (V) | 2.7 |
| Iq (max) (mA) | 0.125 |
| Number of channels | 1 |
| Comparators (#) | 0 |
| Gain error (%) | 2 |
| Gain error drift (±) (max) (ppm/°C) | 100 |
| Features | Bidirectional, Current Output |
| Rating | Catalog |
| Operating temperature range (°C) | -40 to 85 |
| VSSOP (DGK) | 8 | 14.7 mm² 3 x 4.9 |
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