Texas Instruments INA180B2IDBVT

Overview

INA180B2IDBVT from Texas Instruments is a single-channel, high-precision current-sense amplifier optimized for low- and high-side sensing across –0.2 V to +26 V common-mode voltage range, with 50 V/V fixed gain, ±500 µV max offset at 12 V VCM, 2 V/µs slew rate, and 210 kHz bandwidth. It enables accurate real-time current monitoring in motor control inverters and battery protection circuits.

For engineers reviewing the INA180B2IDBVT datasheet, INA180B2IDBVT pinout, INA180B2IDBVT application, or INA180B2IDBVT equivalent, this page delivers verified specifications, validated SOT-23 Pinout B configuration, confirmed 50 V/V gain behavior, and two rigorously cross-checked alternative parts for cost- or performance-sensitive designs.

Technical Context

The INA180B2IDBVT implements a precision current-shunt monitor architecture with integrated matched resistor gain network, enabling stable 50 V/V gain independent of supply voltage. Its input stage operates over –0.2 V to +26 V common-mode range while powered from 2.7 V to 5.5 V, supporting both low-side ground-referenced and high-side bus-referenced sensing topologies without level-shifting circuitry.

It features rail-to-rail output swing (within 5 mV of GND and 30 mV of VS), 1 µV/°C max offset drift, and ±1% max gain error over –40°C to +125°C - all critical for closed-loop current regulation in industrial motor drives and solar inverter DC-link monitoring.

Key Specifications

Pinout & Package

The INA180B2IDBVT is housed in a 5-pin SOT-23 package (2.90 mm × 1.60 mm) using Pinout B configuration per TI SBOS741H Rev H.

Key Features

Applications

Equivalent & Alternatives

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

Compared with INA180B2IDBVT, INA180A2IDBVT offers identical performance but demands pinout-aware layout changes, while MAX40056ASA+T trades lower offset at 0 V for higher supply current and lacks guaranteed ±500 µV spec at 12 V - making INA180B2IDBVT optimal for 24-V industrial current monitoring where VCM stability and thermal drift are dominant concerns.

Availability

INA180B2IDBVT is available at Aetrix Electronics and suitable for motor control, battery monitoring, and solar inverter applications requiring stable component supply, long-term manufacturability, and AEC-Q200-aligned reliability.

Supply support for INA180B2IDBVT 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 over 50 years of innovation in precision signal conditioning and power management ICs.

The INA180 family was designed specifically for cost-optimized, high-accuracy current sensing in industrial, automotive, and renewable energy systems - prioritizing wide common-mode range, low drift, and robust SOT-23 integration.

FAQ

What is the exact pin configuration for INA180B2IDBVT?

The INA180B2IDBVT uses Pinout B in its 5-pin SOT-23 package: Pin 1 = IN+, Pin 2 = GND, Pin 3 = IN−, Pin 4 = OUT, Pin 5 = VS. This differs from Pinout A (used by INA180A2IDBVT), where OUT and IN+ positions are swapped. Always verify against TI SBOS741H Figure 6-2 before layout.

Does INA180B2IDBVT support high-side sensing at 24 V bus voltage?

Yes, the INA180B2IDBVT supports high-side sensing up to +26 V common-mode voltage. With its –0.2 V to +26 V input range and 2.7 V to 5.5 V supply, it can directly monitor 24-V bus currents without external level-shifting - connecting IN+ to the bus side and IN− to the shunt's load side.

What is the maximum guaranteed offset voltage for INA180B2IDBVT at 12 V common-mode?

The INA180B2IDBVT guarantees ±500 µV maximum offset voltage at VCM = 12 V, per TI SBOS741H Section 7.5 Electrical Characteristics. This specification is tested across –40°C to +125°C and ensures predictable error in applications like 48-V battery pack monitoring where VCM remains near 12–15 V.

Can INA180B2IDBVT drive a 10-kΩ load to rail?

Yes, the INA180B2IDBVT delivers rail-to-rail output swing: within 5 mV of GND and 30 mV of VS under 10-kΩ load, per Section 7.5. This enables direct interface with most 12-bit and 16-bit SAR ADCs without buffer amplifiers - preserving signal integrity and reducing BOM count.

How does the bandwidth of INA180B2IDBVT compare to other gain variants in the family?

The INA180B2IDBVT (50 V/V) has a 210 kHz small-signal bandwidth, which is lower than the 350 kHz of the 20 V/V A1 variant but higher than the 150 kHz of the 100 V/V A3 and 105 kHz of the 200 V/V A4 variants. Bandwidth scales inversely with gain due to fixed gain-bandwidth product architecture.