Texas Instruments INA2180A4IDGKR

Overview

INA2180A4IDGKR from Texas Instruments is a dual-channel, high-precision current-sense amplifier with 200 V/V fixed gain, –0.2 V to +26 V common-mode input range, ±500 µV max offset at 12 V VCM, and 105 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 INA2180A4IDGKR datasheet, INA2180A4IDGKR pinout, INA2180A4IDGKR application, or INA2180A4IDGKR equivalent, this device supports low-side and high-side sensing across industrial power rails up to 26 V while maintaining <1% gain error and 1 µV/°C offset drift - critical for precision overtemperature operation in embedded power systems.

Technical Context

The INA2180A4IDGKR integrates matched thin-film resistor networks to achieve 200 V/V gain with ±1% max gain error and minimal temperature drift (1.5 ppm/°C). Its input stage operates independently of supply voltage, allowing sensing at common-mode voltages up to 26 V - exceeding VS by >20 V in high-side configurations.

Each channel features rail-to-rail output swing (within 5 mV of GND and 30 mV of VS), 2 V/µs slew rate, and 40 nV/√Hz input-referred noise. Channel separation exceeds 100 dB at 100 kHz, ensuring minimal crosstalk in dual-channel current monitoring applications such as dual-motor drives or redundant battery sensing.

Key Specifications

Pinout & Package

INA2180A4IDGKR is packaged in an 8-pin VSSOP (DGK) with 3.00 mm × 3.00 mm body size, thermal performance optimized for PCB copper pour (R_θJA = 177.9°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with INA2180A4IDSGR, the VSSOP-packaged INA2180A4IDGKR offers easier manufacturability and lower assembly cost, while INA240A4D provides higher voltage headroom at the expense of increased power consumption and reduced offset accuracy - making INA2180A4IDGKR optimal for cost-sensitive 24-V industrial and battery applications requiring tight thermal and accuracy budgets.

Availability

INA2180A4IDGKR is available at Aetrix Electronics and suitable for motor control, battery monitoring, and solar inverter applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for industrial OEM programs.

Supply support for INA2180A4IDGKR 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 product line, engineered for cost-optimized, high-accuracy bidirectional current measurement in industrial, automotive, and energy systems - emphasizing low drift, wide common-mode range, and robust thermal performance.

FAQ

What is the maximum common-mode voltage supported by the INA2180A4IDGKR?

The INA2180A4IDGKR supports a common-mode input voltage range of –0.2 V to +26 V, enabling high-side current sensing on 24-V industrial buses and low-side sensing with negative transients. This range is independent of the 2.7–5.5 V supply voltage, and the device maintains specified performance across the full –40°C to +125°C operating temperature range. The absolute maximum rating for common-mode voltage is 26 V, beyond which permanent damage may occur.

Does the INA2180A4IDGKR require external gain-setting resistors?

No, the INA2180A4IDGKR does not require external gain-setting resistors. It integrates a precision-matched thin-film resistor network configured for fixed 200 V/V gain. This eliminates resistor matching errors, temperature drift, and board space associated with discrete gain networks - directly delivering a scaled output voltage proportional to sensed current across its full common-mode and temperature range.

What is the typical bandwidth and slew rate of the INA2180A4IDGKR?

The INA2180A4IDGKR has a small-signal bandwidth of 105 kHz and a large-signal slew rate of 2 V/µs. These specifications enable accurate capture of fast current transients in PWM-driven motor phases and switching power supplies. Bandwidth is gain-dependent: A1 (20 V/V) devices achieve 350 kHz, while A4 (200 V/V) variants trade bandwidth for higher gain stability and noise immunity.

How does the INA2180A4IDGKR handle offset voltage over temperature?

The INA2180A4IDGKR specifies a maximum offset drift of 1 µV/°C over –40°C to +125°C, with ±500 µV maximum offset at 12 V common-mode voltage. This low drift ensures stable zero-current baseline in battery fuel gauging and motor idle-current detection, minimizing integration error in coulomb counting and enabling reliable overcurrent thresholds across automotive and industrial thermal profiles.

Can the INA2180A4IDGKR be used in both high-side and low-side current sensing configurations?

Yes, the INA2180A4IDGKR supports both high-side and low-side current sensing. For high-side use, connect IN+ to the bus-voltage side and IN− to the load side of the shunt; for low-side, connect IN+ to the load side and IN− to ground. Its –0.2 V to +26 V common-mode range and rail-to-rail output swing ensure accurate operation in either topology without external level-shifting components.