Texas Instruments INA4180A3IPWR

Overview

INA4180A3IPWR from Texas Instruments is a quad-channel, high-precision current-sense amplifier with 100 V/V fixed gain, –0.2 V to +26 V common-mode input range, ±500 µV max offset at 12 V VCM, and 150 kHz small-signal bandwidth. It operates from 2.7 V to 5.5 V supply and delivers 2 V/µs slew rate for fast transient response in motor control and battery monitoring systems.

For engineers reviewing the INA4180A3IPWR datasheet, INA4180A3IPWR pinout, INA4180A3IPWR application, or INA4180A3IPWR equivalent, this device supports low- and high-side sensing across wide common-mode voltages while maintaining ±1% max gain error and 1 µV/°C max offset drift - critical for accurate current measurement in industrial power management and solar inverter designs.

Technical Context

The INA4180A3IPWR integrates four matched-resistor gain networks (100 V/V) to minimize gain error and temperature drift. Its input stage operates independently of supply voltage, enabling accurate sensing at bus voltages up to 26 V while powered from as low as 2.7 V.

Each channel features rail-to-rail output swing (within 5 mV of GND and 30 mV of VS), 40 nV/√Hz input-referred voltage noise, and 84–100 dB CMRR over –40°C to +125°C - supporting stable performance in noisy, high-voltage industrial environments.

Key Specifications

Pinout & Package

The INA4180A3IPWR is housed in a 14-pin TSSOP package (5.00 mm × 4.40 mm body size) with exposed thermal pad (optional GND connection).

Key Features

Applications

Equivalent & Alternatives

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

Compared with INA4181A3IPWR and MAX40056ATA+T, the INA4180A3IPWR delivers best-in-class cost-efficiency and power efficiency for 24-V industrial current sensing, trading minor PSRR margin and ultra-high-voltage capability for lower quiescent current and broader supply compatibility.

Availability

INA4180A3IPWR 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.

Supply support for INA4180A3IPWR 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 delivering analog and embedded processing solutions for industrial, automotive, and communications markets.

The INA4180 series belongs to TI's precision current-sense amplifier product line, engineered specifically for cost-optimized, high-accuracy bidirectional current measurement in low- and high-side configurations across harsh industrial environments.

FAQ

What is the maximum common-mode voltage supported by the INA4180A3IPWR?

The INA4180A3IPWR 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 above ground, while remaining powered from a low 2.7–5.5-V supply. The specification is guaranteed across the full –40°C to +125°C operating temperature range and applies independently to each of its four channels.

Does the INA4180A3IPWR require external gain-setting resistors?

No, the INA4180A3IPWR does not require external gain-setting resistors. It integrates a precision-matched internal resistor network configured for 100 V/V fixed gain. This eliminates component count, layout sensitivity, and temperature-induced gain drift associated with discrete resistor networks - directly contributing to its ±1% maximum gain error specification.

What is the typical quiescent current consumption of the INA4180A3IPWR?

The INA4180A3IPWR draws a maximum quiescent current of 900 µA across all four channels at TA = –40°C to +125°C and VSENSE = 10 mV. At room temperature (25°C) and nominal conditions, typical IQ is 690 µA. This low power consumption enables continuous current monitoring in battery-powered and energy-sensitive industrial systems without compromising measurement accuracy.

Can the INA4180A3IPWR be used for both high-side and low-side current sensing?

Yes, the INA4180A3IPWR supports both high-side and low-side current sensing configurations. Its –0.2 V to +26 V common-mode input range allows connection to either side of the sense resistor regardless of whether the shunt is placed between load and ground (low-side) or between supply and load (high-side). Each channel's IN+ and IN– pins are fully differential and voltage-independent of the VS supply rail.

What package type and pin count does the INA4180A3IPWR use?

The INA4180A3IPWR is packaged in a 14-pin TSSOP (PW package) with nominal body dimensions of 5.00 mm × 4.40 mm. It includes an exposed thermal pad that may be left floating or connected to GND for improved thermal performance. Pin functions are defined per Table 6-2 of the SBOS741H datasheet, with dedicated IN+, IN–, and OUT pins for each of the four channels plus shared VS and GND terminals.