Texas Instruments INA180B4IDBVR

Overview

INA180B4IDBVR from Texas Instruments is a single-channel, high-side/low-side 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, 105 kHz bandwidth, and 2 V/µs slew rate-used for precision overcurrent detection in motor control and battery monitoring systems.

For engineers reviewing the INA180B4IDBVR datasheet, INA180B4IDBVR pinout, INA180B4IDBVR application, or INA180B4IDBVR equivalent, this page delivers verified electrical specs, SOT-23 pin mapping, real-world use cases, and validated alternative parts for cost-optimized current sensing in industrial and automotive power systems.

Technical Context

The INA180B4IDBVR implements a precision current-shunt monitor architecture with an integrated matched resistor network optimized for 200 V/V gain, minimizing gain error (±1% max) and temperature drift (1 µV/°C max). Its rail-to-rail output stage operates from 2.7 V to 5.5 V supply while rejecting common-mode transients up to 26 V independent of VS.

It supports both high-side and low-side sensing configurations via dedicated IN+ and IN– inputs, with input bias current under 0.1 µA and CMRR of 84 dB min across –40°C to +125°C. The device uses Pinout B (SOT-23), distinguishing it from A1–A4 variants with Pinout A.

Key Specifications

Pinout & Package

The INA180B4IDBVR is housed in a 5-pin SOT-23 package (DBV), 2.90 mm × 1.60 mm body size, 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 INA180A4IDBVR, the INA180B4IDBVR offers identical accuracy and bandwidth but mandates Pinout B layout; versus INA240A1EDRGT, it trades bus voltage headroom and speed for lower quiescent current and simpler gain interface in 24-V systems.

Availability

INA180B4IDBVR is available at Aetrix Electronics and suitable for motor control, battery monitoring, and solar inverter applications requiring stable component supply, long-lifecycle assurance, and consistent parametric performance across production batches.

Supply support for INA180B4IDBVR 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 INA180 family targets cost-optimized, high-reliability current sensing in industrial, automotive, and renewable energy systems-designed to replace discrete op-amp + resistor solutions with integrated, temperature-stable gain and extended common-mode operation.

FAQ

What is the pin configuration of the INA180B4IDBVR?

The INA180B4IDBVR uses Pinout B in its 5-pin SOT-23 (DBV) package: Pin 1 = IN+, Pin 2 = GND, Pin 3 = IN–, Pin 4 = OUT, Pin 5 = VS. This differs from the A-series variants (e.g., INA180A4IDBVR), which place OUT on Pin 1 and IN+ on Pin 3. Always verify layout against TI SBOS741H Figure 6-2 before PCB release. The INA180B4IDBVR pinout is fixed and non-configurable.

Does the INA180B4IDBVR support high-side current sensing?

Yes, the INA180B4IDBVR supports both high-side and low-side current sensing. Its –0.2 V to +26 V common-mode input range allows direct connection across a shunt resistor on a 24-V bus-even when powered from a lower 3.3-V or 5-V supply. For high-side use, connect IN+ to the bus side and IN– to the load side of the shunt. The INA180B4IDBVR's internal architecture rejects common-mode voltage independently of supply rail.

What is the maximum bandwidth of the INA180B4IDBVR?

The INA180B4IDBVR has a small-signal bandwidth of 105 kHz, specified for A4 devices (200 V/V gain) with 10-pF capacitive load. This bandwidth enables accurate capture of current transients in PWM-driven loads such as motor phases or switched-mode power supplies. Bandwidth decreases with higher gain options (e.g., 350 kHz for A1/20 V/V), but the INA180B4IDBVR's 105 kHz remains sufficient for most 20-kHz-class motor control and power converter applications.

How does the offset voltage specification impact accuracy in the INA180B4IDBVR?

The INA180B4IDBVR specifies ±500 µV maximum offset voltage at VCM = 12 V, which translates to ±0.5 mV output error after 200× gain. When used with a 10-mΩ shunt at 5-A load (50-mV sense voltage), this contributes ≤1% full-scale error. At lower currents or higher shunts, offset dominates accuracy-so for sub-1-A measurements, consider trimming or selecting a lower-offset variant like the INA180B1. The INA180B4IDBVR's 1 µV/°C drift further constrains long-term drift in thermally varying environments.

Is the INA180B4IDBVR RoHS-compliant and qualified for automotive use?

The INA180B4IDBVR is RoHS-compliant and specified over the extended temperature range of –40°C to +125°C, meeting AEC-Q100 stress-test requirements for Grade 1 automotive applications. It carries TI's standard industrial qualification, and while not explicitly branded "automotive grade" in part numbering, its datasheet parameters, packaging (SOT-23 DBV), and thermal specs align with under-hood and battery-management use cases. Always confirm final compliance status via TI's official product folder for INA180B4IDBVR before automotive deployment.