0
ACTIVE
Product type |
Analog output |
Common-mode voltage (max) (V) |
26 |
Common-mode voltage (min) (V) |
-0.2 |
Input offset (±) (max) (µV) |
150 |
Input offset drift (±) (typ) (µV/°C) |
0.2 |
Features |
Bidirectional, Low-side Capable |
Rating |
Catalog |
Voltage gain (V/V) |
20, 50, 100, 200 |
CMRR (min) (dB) |
84 |
Bandwidth (kHz) |
105, 150, 210, 350 |
Supply voltage (max) (V) |
5.5 |
Supply voltage (min) (V) |
2.7 |
Iq (max) (mA) |
0.3 |
Number of channels |
1 |
Comparators (#) |
0 |
Gain error (%) |
0.8 |
Gain error drift (±) (max) (ppm/°C) |
20 |
Slew rate (V/µs) |
2 |
Operating temperature range (°C) |
-40 to 125 |
SOT-23 (DBV)-6-8.12 mm² 2.9 x 2.8
The INA181, INA2181, and INA4181 (INAx181) current sense amplifiers are designed for cost-optimized applications. These devices are part of a family of bidirectional, current-sense amplifiers (also called current-shunt monitors) that sense voltage drops across current-sense resistors at common-mode voltages from –0.2 V to +26 V, independent of the supply voltage. The INAx181 family integrates a matched resistor gain network in four, fixed-gain device options: 20 V/V, 50 V/V, 100 V/V, or 200 V/V. This matched gain resistor network minimizes gain error and reduces the temperature drift.
These devices operate from a single 2.7-V to 5.5-V power supply. The single-channel INA181 draws a maximum supply current of 260 µA; whereas, the dual-channel INA2181 draws a maximum supply current of 500 µA, and the quad-channel INA4181 draws a maximum supply current of 900 µA.
The INA181 is available in both the 6-pin, SOT-23 and SC70 packages. The INA2181 is available in 10-pin, VSSOP and WSON packages. The INA4181 is available in a 20-pin, TSSOP package. All device options are specified over the extended operating temperature range of –40°C to +125°C.
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