Texas Instruments INA2180A2IDGKT

Overview

INA2180A2IDGKT from Texas Instruments is a dual-channel, high-precision 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, and 210 kHz small-signal bandwidth. It operates from 2.7 V to 5.5 V supply and draws ≤500 µA quiescent current, enabling accurate bidirectional current monitoring in motor control and battery management systems.

For engineers reviewing the INA2180A2IDGKT datasheet, INA2180A2IDGKT pinout, INA2180A2IDGKT application, or INA2180A2IDGKT equivalent, this page delivers verified specifications, dual-channel pin mapping for VSSOP-8, real-world use cases in high-side/low-side sensing, and two validated alternative parts with documented functional and packaging differences.

Technical Context

The INA2180A2IDGKT integrates matched thin-film resistor networks to achieve ±1% max gain error and 1 µV/°C max offset drift across –40°C to +125°C. Its rail-to-rail output stage delivers 2 V/µs slew rate and supports capacitive loads up to 1 nF without oscillation.

Designed for cost-optimized current sensing, it accepts differential inputs up to ±26 V while powered from a low 2.7–5.5 V supply - decoupling measurement accuracy from bus voltage level. Channel separation exceeds 100 dB at 10 kHz, ensuring minimal crosstalk in dual-sensor applications like phase-current monitoring.

Key Specifications

Pinout & Package

INA2180A2IDGKT is packaged in an 8-pin VSSOP (DGK) with 3.00 mm × 3.00 mm body size, exposed thermal pad (optional GND connection), and standard JEDEC-compliant footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with INA2180A1IDGKT and INA240A2IDR, the INA2180A2IDGKT balances mid-range gain, moderate bandwidth, and cost-efficiency - making it optimal for general-purpose 24-V system monitoring where 50-V/V scaling and 210-kHz fidelity meet design requirements without over-engineering.

Availability

INA2180A2IDGKT 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 for industrial OEM programs.

Supply support for INA2180A2IDGKT 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 cost-optimized current-sense amplifier product line, designed specifically for high-accuracy, low-power current monitoring in industrial, automotive, and renewable energy systems where reliability and wide common-mode range are essential.

FAQ

What is the maximum common-mode voltage supported by the INA2180A2IDGKT?

The INA2180A2IDGKT supports a common-mode input voltage range of –0.2 V to +26 V. This allows it to accurately sense current on high-side configurations with bus voltages up to 26 V - such as 24-V industrial control rails - while operating from a separate 2.7–5.5 V supply. The specification is guaranteed across the full –40°C to +125°C temperature range and applies independently to each channel of the INA2180A2IDGKT.

Does the INA2180A2IDGKT require external gain-setting resistors?

No, the INA2180A2IDGKT does not require external gain-setting resistors. It integrates a precision-matched internal resistor network configured for 50 V/V fixed gain. This eliminates external component count, reduces PCB area, and improves temperature stability - as gain error remains within ±1% across –40°C to +125°C. All gain variants (A1–A4) in the INA2180 family are internally set, including the INA2180A2IDGKT.

What package type is used for the INA2180A2IDGKT, and is thermal pad connection required?

The INA2180A2IDGKT uses the 8-pin VSSOP (DGK) package with 3.00 mm × 3.00 mm body size and an exposed thermal pad. The thermal pad may be left floating or connected to GND - TI documentation states either option is acceptable. When connected to GND, it improves thermal performance (RθJA = 177.9°C/W); when floating, it simplifies layout but slightly increases junction temperature. Both configurations are validated for the INA2180A2IDGKT.

How does the INA2180A2IDGKT handle input overvoltage conditions?

The INA2180A2IDGKT specifies absolute maximum ratings of –26 V to +26 V differential input and GND – 0.3 V to +26 V common-mode voltage. Within these limits, the device operates safely without latch-up or permanent damage. Input bias current remains stable up to 30 V common-mode (per Figure 7-20), and internal ESD protection (±3000 V HBM) guards against transient overstress. These characteristics ensure robust operation in real-world 24-V systems with switching noise and bus transients - a key design feature of the INA2180A2IDGKT.

Can the two channels of the INA2180A2IDGKT be used independently in different sensing configurations?

Yes, the two channels of the INA2180A2IDGKT operate fully independently - each with its own IN+, IN–, and OUT pins - allowing mixed high-side and low-side configurations. For example, Channel 1 can monitor high-side battery current while Channel 2 measures low-side motor phase current. Channel separation exceeds 100 dB at 10 kHz (Figure 7-38), and supply current scales linearly (≤500 µA total), confirming true dual-channel autonomy in the INA2180A2IDGKT.