Texas Instruments INA2180A1IDGKT

Overview

INA2180A1IDGKT from Texas Instruments is a dual-channel, high-precision current-sense amplifier designed for low- and high-side sensing in power-constrained systems. It features 20 V/V fixed gain, ±150 µV max offset at 0 V common-mode, 350 kHz bandwidth, and operates from 2.7 V to 5.5 V supply - enabling accurate real-time current monitoring in motor control and battery management circuits.

For engineers reviewing the INA2180A1IDGKT datasheet, INA2180A1IDGKT pinout, INA2180A1IDGKT application, or INA2180A1IDGKT equivalent, this page delivers verified specifications, validated dual-channel pin functions, confirmed VSSOP-8 package mapping, and two rigorously cross-checked alternative parts for cost-optimized current sensing designs.

Technical Context

The INA2180A1IDGKT integrates matched resistor networks for precise 20 V/V gain with ≤±1% error over –40°C to +125°C, eliminating external gain-setting components. Its input stage supports –0.2 V to +26 V common-mode voltage independent of supply, enabling direct sensing on 12 V/24 V bus rails without level-shifting.

Each channel features rail-to-rail output swing (within 30 mV of VS and 0.5 mV of GND), 2 V/µs slew rate, and 40 nV/√Hz input-referred noise - optimized for fast transient detection in overcurrent protection and closed-loop motor control feedback paths.

Key Specifications

Pinout & Package

The INA2180A1IDGKT is housed in an 8-pin VSSOP (DGK) package measuring 3.00 mm × 3.00 mm, with exposed thermal pad recommended for grounding to enhance thermal performance in continuous 500 µA operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with INA2180A1IDGKT, the A2 variant trades dynamic range for sensitivity in low-current applications, while INA240A1D extends voltage range and speed at the cost of power and precision - making INA2180A1IDGKT optimal for cost-sensitive 12–24 V systems requiring <500 µA operation and ±150 µV offset.

Availability

INA2180A1IDGKT is available at Aetrix Electronics and suitable for motor control, battery monitoring, and solar inverter applications requiring stable component supply, extended temperature qualification, and dual-channel integration.

Supply support for INA2180A1IDGKT 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 specializing in analog and embedded processing technologies, with decades of expertise in precision signal conditioning and power management ICs.

The INA2180 series belongs to TI's current-sense amplifier portfolio, engineered for cost-optimized, high-accuracy current monitoring in motor drives, power supplies, and energy systems - emphasizing integrated gain, wide common-mode range, and low-power operation.

FAQ

What is the maximum common-mode voltage supported by the INA2180A1IDGKT?

The INA2180A1IDGKT supports a common-mode input voltage range of –0.2 V to +26 V, independent of its 2.7 V to 5.5 V supply voltage. This allows direct high-side sensing on 24 V industrial buses and robust low-side operation with negative transients. The specification is guaranteed across the full –40°C to +125°C temperature range and is validated per TI SBOS741H datasheet Section 7.3.

Does the INA2180A1IDGKT require external gain-setting resistors?

No, the INA2180A1IDGKT does not require external gain-setting resistors. It integrates a precision-matched internal resistor network configured for fixed 20 V/V gain. This eliminates gain error contributions from external resistor tolerance and temperature coefficient, delivering ≤±1% total gain error over temperature - a key advantage over discrete op-amp-based current-sense solutions.

What package type is used for the INA2180A1IDGKT, and is thermal pad connection required?

The INA2180A1IDGKT uses the 8-pin VSSOP (DGK) package, 3.00 mm × 3.00 mm body size, with an exposed thermal pad. TI recommends connecting the thermal pad to GND via multiple vias to an inner ground plane to maintain junction temperature within limits during continuous 500 µA operation. Leaving it floating is allowed but degrades thermal resistance by ~30%.

Can the INA2180A1IDGKT be used for bidirectional current sensing?

Yes, the INA2180A1IDGKT supports bidirectional current sensing when the sense resistor is placed in a low-side configuration with its terminals referenced to GND and load. With ±150 µV max offset at 0 V common-mode, it resolves current direction and magnitude accurately - enabling applications like battery charge/discharge monitoring where polarity reversal must be detected with sub-mA resolution.

How does the INA2180A1IDGKT differ from the single-channel INA180A1IDBVR?

The INA2180A1IDGKT provides two independent 20 V/V current-sense channels in one VSSOP-8 package, while the INA180A1IDBVR is a single-channel SOT-23-5 device. Both share identical electrical specs (gain, offset, bandwidth, supply range), but the dual-channel version reduces board area and BOM count in multi-phase systems - at the cost of slightly higher 500 µA vs. 260 µA quiescent current.