Texas Instruments INA4180A4IPWR

Overview

INA4180A4IPWR from Texas Instruments is a quad-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, and 105 kHz bandwidth. It operates from 2.7 V to 5.5 V supply and draws ≤900 µA quiescent current, enabling precision battery monitoring and motor phase current sensing in space-constrained industrial power stages.

For engineers reviewing the INA4180A4IPWR datasheet, INA4180A4IPWR pinout, INA4180A4IPWR application, or INA4180A4IPWR equivalent, key selection criteria include its 200× gain accuracy (±1% max), 2 V/µs slew rate for fast transient response, 1-µV/°C offset drift over –40°C to +125°C, and TSSOP-14 package compatibility with multi-channel current monitoring PCB layouts.

Technical Context

The INA4180A4IPWR integrates four matched resistor-based gain networks (200 V/V each) to minimize inter-channel gain mismatch and temperature-induced drift. Its input stage supports rail-to-rail common-mode operation up to 26 V while powered from as low as 2.7 V - decoupling sensing capability from system supply constraints.

Each channel features independent IN+ and IN– inputs referenced to the same GND and VS rails, enabling simultaneous high-side and low-side configurations across all four channels without shared reference conflicts. The device uses no internal level-shifting circuitry - instead relying on robust input transistor design to maintain accuracy across the full –0.2 V to +26 V VCM range.

Key Specifications

Pinout & Package

TSSOP-14 package (5.00 mm × 4.40 mm body size), thermally enhanced for sustained 4-channel operation at full spec.

Key Features

Applications

Equivalent & Alternatives

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

Compared with INA4180A4IPWR, INA4181A4IPWR adds ultra-low-power shutdown but requires additional control logic, while MAX40056ASA+T extends voltage and speed capability at the cost of 33% higher quiescent current and premium pricing - making INA4180A4IPWR optimal for cost-sensitive, 24 V-class industrial monitoring.

Availability

INA4180A4IPWR is available at Aetrix Electronics and suitable for motor control, battery monitoring, and industrial power management applications requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.

Supply support for INA4180A4IPWR 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 INA4180 series belongs to TI's current-sense amplifier product line, designed specifically for cost-optimized, high-accuracy bidirectional current measurement in industrial, automotive, and renewable energy systems.

FAQ

What is the maximum common-mode voltage supported by the INA4180A4IPWR?

The INA4180A4IPWR supports a common-mode input voltage range of –0.2 V to +26 V. This specification is guaranteed across the full operating temperature range (–40°C to +125°C) and enables reliable high-side sensing on 24 V industrial buses or low-side sensing with negative transients. The device maintains accuracy even when VCM exceeds the 2.7 V to 5.5 V supply voltage - a key differentiator from general-purpose op-amps. This capability is intrinsic to the INA4180A4IPWR's input stage architecture and does not require external level-shifting circuitry.

Does the INA4180A4IPWR require external gain-setting resistors?

No, the INA4180A4IPWR does not require external gain-setting resistors. It integrates a factory-trimmed, matched resistor network configured for 200 V/V fixed gain per channel. This eliminates component count, board area, and matching errors associated with discrete resistor networks. The gain error is specified at ±1% maximum over temperature, and the matched topology ensures inter-channel gain mismatch remains below 0.1%. This integrated architecture is a core feature of the INA4180A4IPWR and contributes directly to its accuracy and ease of use in multi-channel designs.

What is the typical quiescent current consumption of the INA4180A4IPWR?

The INA4180A4IPWR has a maximum quiescent current of 900 µA at TA = –40°C to +125°C and VSENSE = 10 mV. Typical consumption is 690 µA under the same conditions. This low power draw enables continuous four-channel current monitoring in battery-powered or thermally constrained applications without significant thermal impact. The current scales linearly with supply voltage and is independent of common-mode voltage - a verified characteristic confirmed in Figure 7-25 of the official datasheet. All four channels contribute to this total; there is no per-channel disable function.

Can the INA4180A4IPWR be used for bidirectional current sensing?

Yes, the INA4180A4IPWR supports bidirectional current sensing through its –0.2 V to +26 V common-mode input range and rail-to-rail output swing (GND + 0.5 mV to VS – 30 mV). When the sense resistor voltage polarity reverses, the output voltage crosses mid-supply - e.g., at VS = 5 V, 0 V differential yields ~2.5 V output, positive current increases output, negative current decreases it. This behavior is explicitly validated in TI's characterization data and application circuits. No external circuitry is needed; bidirectional operation is inherent to the INA4180A4IPWR's architecture and specified performance.

What package type is used for the INA4180A4IPWR?

The INA4180A4IPWR is supplied in a 14-pin TSSOP package (PW suffix), with nominal body dimensions of 5.00 mm × 4.40 mm. This surface-mount package features exposed pad thermal enhancement and is RoHS-compliant. It is the only package option for the quad-channel INA4180 family, distinct from the SOT-23 (INA180) and VSSOP/WSON (INA2180) variants. The pinout is fully documented in Figure 6-5 and Table 6-2 of the SBOS741H datasheet, and the package meets JEDEC MO-153 standards for automated assembly.