explain

The INA180, INA2180, and INA4180 (INAx180) current detection amplifiers are designed specifically for cost optimized applications. This type of device is part of a series of current detection amplifiers (also known as current splitter monitors) that can detect voltage drops on current detection resistors in a common mode voltage range of -0.2V to+26V independent of the power supply voltage. The INAx180 integrates a matching resistor gain network and supports four fixed gain device options: 20V/V, 50V/V, 100V/V, or 200V/V. The matched gain resistor network can greatly reduce gain error and reduce temperature drift.

All such devices are powered by a single power supply ranging from 2.7V to 5.5V. The maximum power current consumed by a single channel INA180 is 260 µ A; The maximum power current consumed by the dual channel INA2180 is 500 µ A, and the maximum power current consumed by the four channels is 900 µ A.

The INA180 adopts a 5-pin SOT-23 package with two different pin configurations. The INA2180 is packaged in 8-pin VSSOP and WSON. INA4180 is packaged in a 14 pin TSSOP. All device options have an extended rated operating temperature range of -40 ° C to+125 ° C.

characteristic

Common mode range (VCM): -0.2V to+26V

High bandwidth: 350kHz (A1 device)

• Offset voltage:

± 150 µ V at VCM=0V (maximum)

± 500 µ V at VCM=12V (maximum)

Output voltage swing rate: 2V/µ s

• Accuracy:

- ± 1% gain error (maximum)

-1 µ V/° C temperature drift (maximum)

Gain options:

– 20V/V (A1 device)

– 50V/V (A2 devices)

-100V/V (A3 device)

-200V/V (A4 device)

Static current: 260 µ A (maximum) (INA180)

application

• Motor control

• Battery monitoring

• Power management

• Lighting control

• Overcurrent detection