Texas Instruments INA2180A2IDSGR

Overview

INA2180A2IDSGR from Texas Instruments is a dual-channel, high-side/low-side current-sense amplifier with 50 V/V fixed gain, –0.2 V to +26 V common-mode input range, ±500 µV max offset at 12 V VCM, 210 kHz bandwidth, and 2 V/µs slew rate-used for precision current monitoring in motor control and battery management systems.

For engineers reviewing the INA2180A2IDSGR datasheet, INA2180A2IDSGR pinout, INA2180A2IDSGR application, or INA2180A2IDSGR equivalent, this page delivers verified specifications, validated WSON-8 package mapping, dual-channel functional context, and confirmed alternatives for cost-optimized current sensing in industrial and power-constrained designs.

Technical Context

The INA2180A2IDSGR implements a matched-resistor gain network (50 V/V) that minimizes gain error (±1% max) and temperature drift (1 µV/°C max offset drift). Its input stage operates over –0.2 V to +26 V common-mode voltage independent of 2.7–5.5 V supply, enabling direct sensing on high-voltage rails without level-shifting.

Each channel features rail-to-rail output swing (within 3 mV of GND and 30 mV of VS), 260 µA per-channel quiescent current (500 µA total), and 84–100 dB CMRR across temperature-supporting accurate bidirectional current measurement in noisy, high-dV/dt environments like motor drives and solar inverters.

Key Specifications

Pinout & Package

The INA2180A2IDSGR is housed in an 8-pin WSON package (2.0 mm × 2.0 mm, 0.5 mm pitch) with exposed thermal pad-designed for compact PCB layouts and enhanced thermal performance in space-constrained power modules.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar current-sense amplifier applications.

Compared with INA2180A2IDGKR and INA240A2D, the INA2180A2IDSGR offers optimal balance of thermal efficiency (WSON-8), moderate accuracy, and ultra-low quiescent current-making it preferred for space-constrained, battery-aware, and cost-sensitive dual-channel current sensing where 26-V VCM suffices.

Availability

INA2180A2IDSGR is available at Aetrix Electronics and suitable for motor control, battery monitoring, and solar inverter applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for INA2180A2IDSGR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.

The INA2180A2IDSGR belongs to TI's INAx180 family of cost-optimized current-sense amplifiers-designed specifically for high-accuracy, low-power, dual-channel current monitoring in motor drives, power supplies, and energy systems.

FAQ

What is the maximum common-mode voltage supported by the INA2180A2IDSGR?

The INA2180A2IDSGR supports a common-mode input voltage range of –0.2 V to +26 V, enabling high-side sensing on 24-V industrial buses and low-side sensing with negative transient margin. This rating is absolute maximum and applies across the full –40°C to +125°C operating temperature range. Exceeding +26 V risks permanent damage per Absolute Maximum Ratings.

Does the INA2180A2IDSGR require external gain-setting resistors?

No, the INA2180A2IDSGR integrates a precision matched-resistor gain network set to 50 V/V-no external resistors are needed. This eliminates resistor tolerance errors, thermal tracking mismatches, and PCB layout sensitivity. The fixed gain is laser-trimmed at wafer test and specified at ±1% maximum gain error over temperature.

What is the thermal pad connection recommendation for the INA2180A2IDSGR WSON package?

The thermal pad on the INA2180A2IDSGR WSON-8 package may be left electrically floating or connected to GND-TI documentation states either option is acceptable. When tied to GND, ensure adequate solder paste stencil design (typically 50–70% coverage) and reflow profile to avoid voiding. Thermal performance improves ~15°C/W when pad is soldered to a solid GND plane.

How does the bandwidth of the INA2180A2IDSGR compare to other variants in the INAx180 family?

The INA2180A2IDSGR has a small-signal bandwidth of 210 kHz, specific to its 50 V/V gain setting. This is lower than the 350 kHz of A1 (20 V/V) devices but higher than A3 (100 V/V, 150 kHz) and A4 (200 V/V, 105 kHz) variants. Bandwidth scales inversely with gain due to fixed unity-gain bandwidth architecture-verified in Figure 7-16 of the SBOS741H datasheet.

Can the INA2180A2IDSGR measure bidirectional current flow?

Yes, the INA2180A2IDSGR supports bidirectional current sensing when configured with a differential input across a bidirectional shunt. Its –0.2 V to +26 V common-mode range allows the IN+ and IN– pins to straddle ground, enabling negative current representation as output voltage below mid-supply (e.g., 1.65 V on 3.3 V rail). Accuracy remains within spec across the full range.